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Nuvole: A pluggable field-handling system for the Behat Drupal Extension

24 March 2015 - 9:15am
Write more complete Behat test scenarios for both Drupal 7 and Drupal 8.

On of the main goal of BDD (Behaviour Driven Development) is to be able to describe a system's behavior using a single notation, in order to be directly accessible by product owners and developers and testable using automatic conversion tools.

In the PHP world, Behat is the tool of choice. Behat allows to write test scenarios using Gherkin step definitions and it generates the corresponding PHP code to actually run and test the defined scenarios.

Thanks to the excellent Behat Drupal Extension Drupal developers have been able to enjoy the benefits of Behavioral Driven Development for quite some time.

Essentially the project provides an integration between Drupal and Behat allowing the usage of Drupal-specific Gherkin step definitions. For example, writing a scenario that tests node authorship would look like:

Scenario: Create nodes with specific authorship
  Given users:
  | name     | mail            | status |
  | Joe User | joe@example.com | 1      |
  And "article" content:
  | title          | author   | body             |
  | Article by Joe | Joe User | PLACEHOLDER BODY |
  When I am logged in as a user with the "administrator" role
  And I am on the homepage
  And I follow "Article by Joe"
  Then I should see the link "Joe User" Dealing with complex content types

The Gherkin scenario above is pretty straightforward and it gets the job done for simple cases. In a real-life situation, though, it's very common to have content types with a high number of fields, often of different types and, possibly, referencing other entities.

The following scenario might be a much more common situation for a Drupal developer:

Scenario: Reference site pages from within a "Post" node
  Given "page" content:
    | title      |
    | Page one   |
    | Page two   |
    | Page three |
  When I am viewing a "post" content:
    | title                | Post title         |
    | body                 | PLACEHOLDER BODY   |
    | field_post_reference | Page one, Page two |
  Then I should see "Page one"
  And I should see "Page two"

While it is always possible to implement project specific step-definition, as show on this Gist dealing with field collections and entity references, having to do that for every specific content type might be an unnecessary burden.

Introducing field-handling for the Behat Drupal Extension

Nuvole recently contributed a field-handling system that would allow the scenario above to be ran out of the box, without having to implement any custom step definition, working both in Drupal 7 and Drupal 8. The idea behind it is to allow a Drupal developer to work with fields when writing Behat test scenarios, regardless of the entity type or of any field-specific implementation.

The code is currently available on the master branches of both the Behat Drupal Extension and the Drupal Driver projects, if you want to try it out follow the instructions at "Stand-alone installation" and make sure to grab the right code by specifying the right package versions in your composer.json file:

{
  "require": {
    "drupal/drupal-extension": "3.0.*@dev",
    "drupal/drupal-driver": "1.1.*@dev"
}

The field-handling system provides an integration with several highly-used field types, like:

Date fields

Date field values can be included in a test scenario by using the following notation:

  • Single date field value can be expressed as 2015-02-08 17:45:00
  • Start and end date are separated by a dash -, for ex. 2015-02-08 17:45:00 - 2015-02-08 19:45:00.
  • Multiple date field values are separated by a comma ,

For example, the following Gherkin notation will create a node with 3 date fields:

When I am viewing a "post" content:
  | title       | Post title                                |
  | field_date1 | 2015-02-08 17:45:00                       |
  | field_date2 | 2015-02-08 17:45:00, 2015-02-09 17:45:00  |
  | field_date3 | 2015-02-08 17:45:00 - 2015-02-08 19:45:00 | Entity reference fields

Entity reference field values can be expressed by simply specifying the referenced entity's label field (e.g. the node's title or the term's name). Such an approach wants to keep up with BDD's promise: i.e. describing the system behavior by abstracting, as much as possible, any internal implementation.

For example, to reference to a content item with title "Page one" we can simply write:

When I am viewing a "post" content:
  | title           | Post title |
  | field_reference | Page one   |

Or, in case of multiple fields, titles will be separated by a comma:

When I am viewing a "post" content:
  | title           | Post title         |
  | field_reference | Page one, Page two | Link fields

A Link field in Drupal offers quite a wide range of options, such as an optional link title or internal/external URLs. We can use the following notation to work with links in our test scenarios:

When I am viewing a "post" content:
  | title       | Post title                                              |
  | field_link1 | http://nuvole.org                                       |
  | field_link2 | Link 1 - http://nuvole.org                              |
  | field_link3 | Link 1 - http://nuvole.org, Link 2 - http://example.com |

As you can see we use always the same pattern: a dash - to separate parts of the same field value and a comma , to separate multiple field values.

Text fields with "Select" widget

We can also refer to a select list value by simply referring to its label, so to have much more readable test scenarios. For example, given the following allowed values for a select field:

option1|Single room
option2|Twin room
option3|Double room

In our test scenario, we can simply write:

When I am viewing a "post" content:
  | title      | Post title               |
  | field_room | Single room, Double room | Working with other entity types

Field-handling works with other entity types too, such as users and taxonomy terms. We can easily have a scenario that would create a bunch of users with their relative fields by writing:

Given users:
  | name    | mail                | language | field_name | field_surname | field_country  |
  | antonio | antonio@example.com | it       | Antonio    | De Marco      | Belgium        |
  | andrea  | andrea@example.com  | it       | Andrea     | Pescetti      | Italy          |
  | fabian  | fabian@example.com  | de       | Fabian     | Bircher       | Czech Republic | Contributing to the project

At the moment field-handling is still a work in progress and, while it does support both Drupal 7 and Drupal 8, it covers only a limited set of field types, such as:

  • Simple text fields
  • Date fields
  • Entity reference fields
  • Link fields
  • List text fields
  • Taxonomy term reference fields

If you want to contribute to the project by providing additional field type handlers you will need to implement this very simple, core-agnostic, interface:

<?php
namespace Drupal\Driver\Fields;

/**
* Interface FieldHandlerInterface
* @package Drupal\Driver\Fields
*/
interface FieldHandlerInterface {

  /**
   * Expand raw field values in a format compatible with entity_save().
   *
   * @param $values
   *    Raw field values array.
   * @return array
   *    Expanded field values array.
   */
  public function expand($values);
}
?>

If you need some inspiration check the current handlers implementation by inspecting classes namespaced as \Drupal\Driver\Fields\Drupal7 and \Drupal\Driver\Fields\Drupal8.

Tags: Drupal PlanetTest Driven DevelopmentBehat
Categories: Drupal

4Sitestudios.com Drupal Blog: Wordpress, Drupal and SEO.

24 March 2015 - 9:00am

Something that’s seen a resurgence of late is the importance of SEO and site/page ranking (though if your job revolves around content, you’d probably say it never left). It seems like after the initial crush of SEO and SEO specialists in the early-ish days of the web, things like backlink ranking, metadata, alt tags and all those other accessibility tools went the way of the dodo. Gone were the days where people massaged their content to smash in as many keywords as possible, where SEO specialists were getting paid obscene amounts of money to add in <meta> data into your html templates. Design reigned supreme.

But with the sheer amount of information available online, there remains a pressing and consistent need to ensure that your site rises above the fray; you want to be the expert, the forum for discussion, the end-all-be-all. So you’ve put together that lovely little site with the cool hamburger nav, the beautifully optimized content, the frequently updated blog and news sections--what’s next?

One of the key tools that people don’t really use is Google analytics; sure, everyone’s got that tracking code embedded in their templates or footer, and every so often, you’ll go in there and take a look at the cool line graph that tells you...well, nothing really. If you dig deeper into GA, you get an awesome picture of where, when, how, and even why people are visiting your site. You can see which content people like, which content is shared and liked, how often and by whom.

So that’s step one: Use GA to it’s full potential.

They have enough tools to make you cry, but if you make the effort to wade through them, you can tailor it to not only fit your content or website better, you can also make website a better fit for the web itself. Both Drupal and Wordpress make it so easy to add in the GA tracking code that there’s really no excuse to not have it up and running, secreting away all those squirrely little details Google is so fond of.

But more importantly, on the subject of tools, is a wonderful little plugin for Wordpress called Yoast. If you’ve worked with WP, have a WP site, or even browse the internet, you’ve probably heard of this plugin, and for good reason...it’s stunningly easy to setup and use. It tells you what pages are awful, how many keywords you’re missing, when your content is poorly optimized, when your images don’t have tags and text, and a number of other issues that take the best stab at Google’s inscrutable SEO rules/ranking criteria as you can get. This plugin is so ubiquitous as to be almost mandatory if you care at all about getting your website seen--the makers claim that Yoast has been downloaded almost 15 million times. So what’s the option for Drupal?

The short answer is, there isn’t one.

Sure, when it comes down to it, you have the same options as WP sites--being customizable is, after all, kind of Drupal’s thing. You can edit your templates to add in your markup, you can install dozens of modules (XML sitemap, pathauto, Google analytics, redirect, metatag, token, page title, SEO checker, SEO checklist...and the list goes on), and you’ll eventually get the same functionality as one WP plugin that takes literally two minutes to add and install. And that’s including the time it takes to actually FTP in.

And I suppose this all fits in with Drupal’s more...Drupal-y...audience. It’s open source--you’re expected to code, to configure, to muck, to install and extend. It’s just one of those things where you shouldn’t have to install so many different, specialized modules to get the functionality you need to optimize. Sure-- there’s even a module called SEO Tools -- but it has a list of 18 additional “recommended/required modules,” and all that gets you is a screen that looks remarkably like the Google analytics dashboard.

I hesitate to use the word “lazy,” when what I really mean is “efficient,” or the even more adept “optimized,” but really--you just spent weeks/months and thousands of dollars getting a site up and running, UX’d, designed, sprinted and agile-d. The final step, the key step to actually getting your site seen, should not be a massive, dozen-module installing, template editing undertaking.

Obviously, the SEO ideal for a fresh or redesigned Drupal site is a thorough and well-planned strategy phase, and if there’s time, budget, interest (and willpower) to structure your content around key SEO strategies, it’s perfect. But if you’ve ever worked on websites, you know that sometimes you just need something that works well out of the box.

WP has Yoast. Where’s Drupal’s “something?” Consider the gauntlet thrown.

 
Categories: Drupal

Drupal Easy: Book Review: Drush for Developers (Second Edition)

24 March 2015 - 6:48am

Calling this book a "second edition" is more than a little bit curious, since there is no Drush for Developers (First Edition). I can only assume that the publisher considers Juampy's excellent Drush User's Guide (reviewed here) as the "first edition" of Drush for Developers (Second Edition), but that really minimzes ths book, as it is so much more than an updated version of Drush User's Guide. It would be like saying The Godfather, Part 2 is an updated version of The Godfather - which is just crazy talk. Drush Developer's Guide is more of a sequel - and (like The Godfather, Part 2) a darn good one at that.

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read more

Categories: Drupal

Drupalize.Me: Tutorial: Vagrant Drupal 8 Development

24 March 2015 - 6:04am

Vagrant Drupal Development (VDD) is a ready-to-use development environment using a virtual machine. Why use it? It provides a standard hosting setup, contained in a virtual machine, for developing with Drupal. This allows you to get up and running really, really quickly, without knowing anything about server administration.

Categories: Drupal

ERPAL: Setting objectives in projects with these 3 rules

24 March 2015 - 4:07am

Many of you who work on projects every day have enjoyed great success with them, but then again, there are also those projects that don't achieve their financial goals, or slip over the timeline or don't deliver the results they should. In this article, I’ll describe three rules to help you consistently plan for project success. In no case should a project be left to chance, to the customer or to the supplier alone. Here I’ll explain how to control a project from its start to its successful end. You risk driving it into the ground if you don’t stick to the following points:

1) Understand why we have projects

Recently, at the booth of a project manager at an exhibition, I read the following: "Projects are not an end unto themselves." This sentence may seem trivial at first glance, but it incorporates several important truths:

  • After a successfully completed project, something should be different and improved, compared to before
  • Projects start with a fixed – and hopefully clearly defined – goal
  • Afterward, there should be positive changes and the project value should persist

2) Set a clear schedule to control limited resources

Taking the definition of a project into consideration, it can be described as:

  • Unique: we’re not selling a product that’s finished and can be sold and used as is; rather, we’re creating something that doesn’t yet exist in the desired form
  • Fixed scheduled start: unless a project has a clearly defined beginning, the project team will only take it semi-seriously during the course of the work
  • Scheduled end: a clear project end is part of the goal and is defined in terms of both date and content

The fact that there are only limited resources available for a project is self-evident and of utmost importance. This is where a project plan comes into play – as well as a project manager who’ll manage the resources to stick to the plan.

3) Set goals! Make them clear, measurable and known amongst the team

A project follows a vision that consists of one or more goals. These objectives should be formulated in a SMART (Specific Measurable Achievable Realistic Timely) way and be clearly understood by all project participants, as they can only work towards objectives that are known to them. Goals extend to certain areas, e.g. cost, duration, or benefits. Important in the formulation of objectives: the project requirements are not goals but conditions that must be met before the goal can ever be reached. All requirements and project milestones should be periodically checked regarding each objective. This can happen in a weekly retrospective meeting, in a monthly controlling meeting or even in a daily status meeting. The basic conditions and requirements can – and will – change, of course. This is normal. Even the goal, especially of long-running projects, can change if important conditions change. However, this should be done consciously and in a controlled fashion, with the agreement of all involved parties. Under no circumstances should unnoticed and thus uncontrolled changes be accepted. To deal with changing environments and requirements is exactly what agile project management was made for.

So: stick to your overall goal. If, for instance, you want to create an e-commerce system to attract new customer groups and generate more revenue, but you’re spending days trying to find just the right position for banners ads, you’re forgetting your goals. Set priorities and stick to them during development.

If your goal is higher revenues, better quality or more efficiency, you should provide concrete metrics and a fixed date for those measurements. Otherwise, there will be unfulfilled expectations at the end of the project. What if someone thought 1% more sales was reaching the goal, although the sales manager expected an uplift of 10% – but he just assumed this without clearly communicating his expectation? And, in addition, the sales manager guessed the project would take six months, while the rest of the team planned for 12?

The topic of the next installment in this series will be "Agile projects for a fixed price? Yes you can!"

Categories: Drupal

Triquanta Web Solutions: What the fq? A short summary of Solr query fields.

24 March 2015 - 12:24am
#And how to use them in Drupal

A popular search engine for Drupal is Apache Solr. Although installation and configuration of Solr can be done almost completely via the Drupal Admin UI, in some cases it can be very instructive to see and understand what data is sent to and from Solr when a search is done from Drupal.

First place to look when using Solr inside Tomcat is the log file of Tomcat, usually /var/log/tomcat6/catalina.out. If this file is not present in this directory on your system use

locate catalina.out

or a similar command to find it.

If Solr is used in its own Jetty-container and is run as a seperate service (which is the only option for Solr 5.x), log4j is used to implement logging and configuration is done in the log4j.properties-file.

By default the logs are written to 'logs/solr' under the Solr root, this can be set with in log4j.properties with the 'solr.log'-option, for example:

solr.log=/var/solr/logs

For more information about log4j, see Apache Log4j 2.

In the log, each line like the following represents one search query:

INFO: [solrdev] webapp=/solr path=/select params={spellcheck=true& spellcheck.q=diam& hl=true& facet=true& f.bundle.facet.mincount=1& f.im_field_tag.facet.limit=50& f.im_field_tag.facet.mincount=1& fl=id,entity_id, entity_type, bundle, bundle_name, label, ss_language, is_comment_count, ds_created, ds_changed, score, path, url, is_uid, tos_name& f.bundle.facet.limit=50& f.content.hl.alternateField=teaser& hl.mergeContigious=true& facet.field=im_field_tag& facet.field=bundle& fq=(access_node_tfslk0_all:0+OR+access__all:0)& mm=1& facet.mincount=1& qf=content^40& qf=label^5.0& qf=tags_h2_h3^3.0& qf=taxonomy_names^2.0& qf=tos_content_extra^0.1& qf=tos_name^3.0& hl.fl=content& f.content.hl.maxAlternateFieldLength=256& json.nl=map& wt=json& rows=10& pf=content^2.0& hl.snippets=3& start=0& facet.sort=count& q=diam& ps=15} hits=10 status=0 QTime=12

NB: one way to get a clearer look at the log-lines, is by copying one of them into a text editor and replace '&' with '&\n' and ',' with ',\n' to get a more readable text.

Here '[solrdev]' indicates the core the query was submitted to and 'path=/select' the path.

Everything between the {}-brackets is what is added to the query as parameter. If your Solr host is localhost, Solr is running on port 8080 and the name of your core is solrdev then you can make this same query in any browser by starting with:

http://localhost:8080/solr/soldev/select?

followed by all the text between the {}-brackets.

This looks like no simple query and in fact a lot is going on here: not only is the Solr/Lucene index searched for a specific term, we also tell Solr which fields to return, to give us spellcheck suggestions, to higlight the search term in the return snippet, to return facets etcetera.

For better understanding of the Solr query we will break it down and discuss each (well, maybe not all) of the query parameters from the above log line.

Query breakdown q: Search term

The most basic Solr query would only contain a q-field, e.q.

http://localhost:8080/solr/solrdev/select?q=diam

This would return all fields present in Solr for all matching documents. This will either be fields directly defined in the schema.xml (in this examples we use the schema's based on the schema included in the Search API Solr module) like bundle_name:

<field name="bundle_name" type="string" indexed="true" stored="true"/>

or dynamic fields, which are created according to the field definition in the schema.xml, eg:

<dynamicField name="ss_*" type="string" indexed="true" stored="true" multiValued="false"/>

The above query run on my local development environment would return a number of documents like this one:

<doc> <bool name="bs_promote">true</bool> <bool name="bs_status">true</bool> <bool name="bs_sticky">false</bool> <bool name="bs_translate">false</bool> <str name="bundle">point_of_interest</str> <str name="bundle_name">Point of interest</str> <str name="content">Decet Secundum Wisi Cogo commodo elit eros meus nisl turpis.(...) </str> <date name="ds_changed">2015-03-04T08:45:18Z</date> <date name="ds_created">2015-02-19T18:55:44Z</date> <date name="ds_last_comment_or_change">2015-03-04T08:45:18Z</date> <long name="entity_id">10</long> <str name="entity_type">node</str> <str name="hash">tfslk0</str> <str name="id">tfslk0/node/10</str> <long name="is_tnid">0</long> <long name="is_uid">1</long> <str name="label">Decet Secundum Wisi</str> <str name="path">node/10</str> <str name="path_alias">content/decet-secundum-wisi</str> <str name="site">http://louis.atlantik.dev/nl</str> <arr name="sm_field_subtitle"> <str>Subtitle Decet Secundum Wisi</str> </arr> <arr name="spell"> <str>Decet Secundum Wisi</str> <str>Decet Secundum Wisi Cogo commodo elit eros meus nisl turpis. (...) </str> </arr> <str name="ss_language">nl</str> <str name="ss_name">admin</str> <str name="ss_name_formatted">admin</str> <str name="teaser"> Decet Secundum Wisi Cogo commodo elit eros meus nisl turpis. Abluo appellatio exerci exputo feugiat jumentum luptatum paulatim quibus quidem. Decet nutus pecus roto valde. Adipiscing camur erat haero immitto nimis obruo pneum valetudo volutpat. Accumsan brevitas consectetuer fere illum interdico </str> <date name="timestamp">2015-03-05T08:30:11.7Z</date> <str name="tos_name">admin</str> <str name="tos_name_formatted">admin</str> <str name="url"> http://louis.atlantik.dev/nl/content/decet-secundum-wisi </str> </doc>

(In this document I have left out most of the content of the fields content and spell).

Obviously, when searching we are not interested in all fields, for example the afore mentioned field content contains a complete view (with HTML tags stripped) of the node in Drupal, which most of the times is not relevant when showing search results.

fl: Fields

So the first thing we want to do is limit the number of fields Solr is returning by adding the fl parameter, in which we name the fields we want returned from Solr:

http://localhost:8080/solr/solrdev/select?q=diam&fl=id,entity_id,entity_type,bundle,bundle_name,label,ss_language,score,path,url

This would return documents like:

<doc> <float name="score">0.1895202</float> <str name="bundle">point_of_interest</str> <str name="bundle_name">Point of interest</str> <long name="entity_id">10</long> <str name="entity_type">node</str> <str name="label">Decet Secundum Wisi</str> <str name="path">node/10</str> <str name="ss_language">nl</str> <str name="url"> http://localhost/nl/content/decet-secundum-wisi </str> </doc>

Here we not only use fields which are direclty present in the index (like bundle) but also a generated field score which indicates the relevance of the found item. This field can be used to sort the results by relevance.

By the way, from Solr 4.0 on, the fl can be added multiple times to the query with in each parameter one field. However the "old" way of a comma-seperated field list is still supported (also in Solr 5).

So in Solr 4 the query could (or should I say: should?) be written as:

http://localhost:8080/solr/solrdev/select?q=diam&fl=id&fl=entity_id&fl=entity_type&fl=bundle&fl=bundle_name&fl=label&fl=ss_language&fl=score&fl=path&fl=url

NB: in Solr 3 this would give a wrong result, with only the first fl field returned.

Please note that you can not query all dynamic fields at once with a fl-parameter like 'fl=ss_*': you must specify the actual field which are created while indexing: fl=ss_language,ss_name,ss_name_formatted... etc.

fq: Filter queries

One thing we do not want is users finding unpublished content which they are not allowed to see. When using the Drupal scheme, this can be accomplished by filtering on the dynamic fields created from

<dynamicField name="access_*" type="integer" indexed="true" stored="false" multiValued="true"/>

To filter, we add a fq-field like this:

http://localhost:8080/solr/solrdev/select?q=diam&fl=id,entity_id,entity_type,bundle,bundle_name,label,ss_language,score,path,url&fq=(access_node_tfslk0_all:0+OR+access__all:0)

The queries in fq are cached independent from the other Solr queries and so can speed up complex queries. The query can also contain range-queries, e.g. to limit the returned documents by a popularity-field present in the Drupal-node (and of course, indexed) between 50 and 100, one could use

fq=+popularity:[50 TO 100]

For more info see the Solr wiki, CommonQueryParameters

To add filter queries programmatically in Drupal when using the Apache Solr Search-module, implement

hook_apachesolr_query_alter()

and use

$query->addFilter

to add filters to the query.

For example, to filter the query on the current language, use:

function mymodule_apachesolr_query_alter(DrupalSolrQueryInterface $query) { global $language; $query->addFilter("ss_language", $language->language); }

If using the Solr environment with Search API Solr Search, implement

hook_search_api_solr_query_alter(array &$call_args, SearchApiQueryInterface $query)

In this hook you can alter or add items to the

$call_args['params']['fq']

to filter the query.

 

In both cases the name of the field to use can be found via the Solr admin. In this case it is a string fieks created from the dynamic ss_ *-field in 'schema.xml'.

rows and start: The rows returnd

The 'row'-parameter determines how many documents Solr will return, while 'start' detemines how many documents to skip. This basically implements pager-functionality.

wt: Type of the returned data

The 'wt'-parameter determines how the data from Solr is returned. Most used are:

  • xml (default)
  • json

See https://cwiki.apache.org/confluence/display/solr/Response+Writers for a complete list of available formats and their options.

qf: Boosting

The DisMax and EdisMax plugins have the abilty to boost the score of documents. In the default Drupal requestHandler ("pinkpony") the Edismax-parser is set as query plugin:

<requestHandler name="pinkPony" class="solr.SearchHandler" default="true"> <lst name="defaults"> <str name="defType">edismax</str>

Boosting can be done by adding one or more qf-parameters which define the fields ("query field") and their boost value in the following syntax:

[fieldName]^[boostValue]

E.g:

qf=content^40& qf=label^5.0& qf=tags_h2_h3^3.0& qf=taxonomy_names^2.0&

In Drupal this is done by implementing the relevant (Search API or Apache Solr) hook and adding the boost.

For example, let's say you want to boost the result with a boost value of "$boost" if a given taxonomy term with id "$tid" is present int the field "$solr_field"

For Apache Solr module we should use:

function mymodule_apachesolr_query_alter(DrupalSolrQueryInterface $query) { $boost_q = array(); $boost_q[] = $solr_field . ':' . $tid . '^' . $boost; $query->addParam('bq', $boost_q); }

For Search API Apache Solr:

function mymodule_search_api_solr_query_alter(array &$call_args, SearchApiQueryInterface $query) { $call_args['params']['bq'][] = $solr_field . ':' . $tid . '^' . $boost; }

NB: both examples we ignore any boost-values set by other modules for the same field. In real life you should merge the exisitng boost-array with our new one.

Negative boosting

Negative boosting is not possible in Solr. It can however be simulated by boosting all documents who do not have a specific value. In the above example of boosting on a specific taxonomy term, we can use:

$boost = abs($boost); $boost_q[] = '-' . $solr_field . ':' . $tid . '^' . $boost;

or, for Search API

$boost = abs($boost); $call_args['params']['bq'][] = '-' . $solr_field . ':' . $tid . '^' . $boost;

where the '-' for the field name is used to indicated that we want to boost the items that do not have this specific value.

mm: minimum should match

The Edismax parser also supports querying phrases (as opposed to single words). With the 'mm' parameters the minimum amount of words that must be present in the Solr-document is given. For example: if the query is "little red corvet" and 'mm' is set to '2', only documents which contain at least:

  • "little" and "red"
  • "little" and "corvette"
  • "red" and "corvette"

are returned, and documents which contain only of the words are not.

q.alt: for empty queries

If specified, this query will be used when the main query string is not specified or blank. This parameter is also specific for the EdisMax query handler.

And even more

Of course the above mentioned fields are not all fields used in a Solr query. Much more can be done with them and there are a lot of other parameters to influence the output of Solr.

To mention just a few:

Facets

Facets are one of the strong assets of Solr. A complete description of all possibilities and settings for facets would take to far in this scope, but a number of usefull parameters are discussed her.

The Drupal Facet API module and its range of plugins have a plethora of settings and possibilites, like the Facet Pretty Paths-module or, for an example of the numerous possibilities of the Facet API, the Facet API Taxonomy Sort module.

The most important Solr parameters in relation to facets are:

facet

Turn on the facets by using "facet=true" in the query.

facet.field

The field to return facets for, can be added more than once.

facet.mincount

This indicates the minimum amount of results for which to show a facet.

If this is set to '1', all facets items which would return documents are returned, if set to '0' a facet item for each value in the field will be returned, even if clicking on the item would return zero documents.

facet.sort

How to sort the facet items. Possible values are:

facet.sort=count

Sort by number of returned documents

facet.sort=index

Amounts to sorting by alphabet, or, in the Solr-wiki style: return the constraints sorted in their index order (lexicographic by indexed term). For terms in the ascii range, this will be alphabetically sorted.

facet.limit

The maximum amount of facet items returned, defaults to 100.

facet.offset

The number of facet items skipped. Defaults to '0'.

'facet.limit' and 'facet.offset' can be combined to implement paging of facet items.

Highlighting hl

Highlighting is turned on with 'hl=true' and enables highlighting the keywords in the search snippet Solr returns. Like facetting and spellchecking, highlighting is an extensive subject, see http://wiki.apache.org/solr/HighlightingParameters for more info.

hl.formatter

According to the Solr wiki: currently the only legal value is "simple". So just use 'simple'.

hl.simple.pre/hl.simple.post

Set the tags used to surround the highlight, defaults to <em> / </em> To wrap the highlight in for example bold tags, use:

hl.simple.pre=<b>&hl.simple.post=<b> Spellchecking spellcheck

Spellchecking is enabled with 'spellcheck=true'.

Because spellchecking is a complicated and language dependend process, it is not discussed here in full, see http://wiki.apache.org/solr/SpellCheckComponent for more information about the spellcheck component.

If the query for the spellchecker is given in a seperate 'spellcheck.q'-parameter like this:

spellcheck.q=<word>

this word is used for spell checking. If the 'spellcheck.q'-parameter is not set, the default 'q'-parameters is used as input for the spellchecker. Of course the word in the 'spellcheck.q' should bare a strong relation to the word in the 'q'-parameter, otherwise ununderstandable spelling suggestions wpould be given.

One can also make seperate requests to the spellchecker:

http://localhost:8080/solr/solrdev/spell?q=<word>&spellcheck=true&spellcheck.collate=true&spellcheck.build=true

Where <word> in the 'q-parameter is the word to use as input for the spellchecker.

One important subject releated to spellchecking is the way content is analyzed before it is written into the index or read from it. See SpellCheckingAnalysis for the default settings for the spellcheck-field.

In Drupal there is a spellcheck module for Search API Search API Spellcheck which can be used for multiple search backends.

Conclusion

Although most of the parameters mentioned above are more or less hidden by the Drupal admin interface, a basic understanding of them, can help to understand why your Solr search does (or more usually: does not) returns the results you expected.

As said in the introduction: looking at the queries in the Tocmat log can help a lot when debugging Solr.

Categories: Drupal

Drupal.org frontpage posts for the Drupal planet: Announcing The Aaron Winborn Award to honor amazing community members

23 March 2015 - 9:17pm

In honor of long-time Drupal contributor Aaron Winborn (see his recent Community Spotlight), whose battle with Amyotrophic lateral sclerosis (ALS) (also referred to as Lou Gehrig's Disease) is coming to an end later today, the Community Working Group, with the support of the Drupal Association, would like to announce the establishment of the Aaron Winborn Award.

This will be an annual award recognizing an individual who demonstrates personal integrity, kindness, and above-and-beyond commitment to the Drupal community. It will include a scholarship and stipend to attend DrupalCon and recognition in a plenary session at the event. Part of the award will also be donated to the special needs trust to support Aaron's family on an annual basis.

Thanks to Hans Riemenschneider for the suggestion, and the Drupal Association executive board for approving this idea and budget so quickly. We feel this award is a fitting honor to someone who gave so much to Drupal both on a technical and personal level.

Thank you so much to Aaron for sharing your personal journey with all of us. It’s been a long journey, and a difficult one. You and your family are all in our thoughts.

Front page news: Planet Drupal
Categories: Drupal

lakshminp.com: The Drupal 8 plugin system - part 4

23 March 2015 - 6:53pm

We defined what a plugin is, discussed some plugins used in core and wrote our own custom plugin previously. We shall tune it up a bit in this post.

Real world plugins have a lot more properties than the label property mentioned in our breakfast plugin. To make our plugin more "real world", we introduce 2 properties, image and ingredients. It makes more sense now to have a custom annotation for breakfast instead of using the default Plugin annotation.

How different are custom annotations from the usual Plugin annotation?

1) They convey more information about a plugin than what an @Plugin does. Here's a custom annotation for a views display plugin from search_api, taken from here.

/** * Defines a display for viewing a search's facets. * * @ingroup views_display_plugins * * @ViewsDisplay( * id = "search_api_facets_block", * title = @Translation("Facets block"), * help = @Translation("Display the search result's facets as a block."), * theme = "views_view", * register_theme = FALSE, * uses_hook_block = TRUE, * contextual_links_locations = {"block"}, * admin = @Translation("Facets block") * ) */

2) Custom annotations are a provision to document the metadata/properties used for a custom plugin.
Check out this snippet from FieldFormatter annotation code for instance:

/** * A short description of the formatter type. * * @ingroup plugin_translatable * * @var \Drupal\Core\Annotation\Translation */ public $description; /** * The name of the field formatter class. * * This is not provided manually, it will be added by the discovery mechanism. * * @var string */ public $class; /** * An array of field types the formatter supports. * * @var array */ public $field_types = array(); /** * An integer to determine the weight of this formatter relative to other * formatter in the Field UI when selecting a formatter for a given field * instance. * * @var int optional */ public $weight = NULL;

That gave us a lot of information about the plugin and its properties.
Now that you are convinced of the merits of custom annotations, let's create one.

Checkout the module code if you haven't already.

$ git clone git@github.com:badri/breakfast.git

Switch to the custom-annotation-with-properties tag.

$ git checkout -f custom-annotation-with-properties

and enable the module. The directory structure should look like this:

The new Annotation directory is of interest here. Custom annotations are defined here.

/** * A glimspe of how your breakfast looks. * * This is not provided manually, it will be added by the discovery mechanism. * * @var string */ public $image; /** * An array of igredients used to make it. * * @var array */ public $ingredients = array();

Now, the plugin definition is changed accordingly. Here's the new annotation of the idli plugin.

/** * Idly! can't imagine a south Indian breakfast without it. * * * @Breakfast( * id = "idly", * label = @Translation("Idly"), * image = "https://upload.wikimedia.org/wikipedia/commons/1/11/Idli_Sambar.JPG", * ingredients = { * "Rice Batter", * "Black lentils" * } * ) */

The other change is to inform the Plugin Manager of the new annotation we are using.
This is done in BreakfastPluginManager.php.

// The name of the annotation class that contains the plugin definition. $plugin_definition_annotation_name = 'Drupal\breakfast\Annotation\Breakfast'; parent::__construct($subdir, $namespaces, $module_handler, 'Drupal\breakfast\BreakfastInterface', $plugin_definition_annotation_name);

Let's tidy the plugin by wrapping it around an interface. Though this is purely optional, the interface tells the users of the plugin what properties it exposes.
This also allows us to define a custom function called servedWith() whose implementation is plugin specific.

With the plugin class hierarchy looking like this now:

The servedWith() is implemented differently for different plugin instances.

// Idly.php public function servedWith() { return array("Sambar", "Coconut Chutney", "Onion Chutney", "Idli podi"); } // MasalaDosa.php public function servedWith() { return array("Sambar", "Coriander Chutney"); }

We make use of the interface functions we wrote in the formatter while displaying details about the user's favorite breakfast item.

// BreakfastFormatter.php foreach ($items as $delta => $item) { $breakfast_item = \Drupal::service('plugin.manager.breakfast')->createInstance($item->value); $markup = '<h1>'. $breakfast_item->getName() . '</h1>'; $markup .= '<img src="'. $breakfast_item->getImage() .'"/>'; $markup .= '<h2>Goes well with:</h2>'. implode(", ", $breakfast_item->servedWith()); $elements[$delta] = array( '#markup' => $markup, ); }

And the user profile page now looks like this.

Derivative plugins

We have Idly plugin instance mapped to the Idly class and Uppuma instance mapped to the Uppuma class. Had all the plugin instances been mapped to a single class, we would have got derivative plugins. Derivative plugins are plugin instances derived from the same class.
They are employed under these scenarios:
1. If one plugin class per instance is an overkill.
There are times where you don't want to define a class for each plugin instance. You just say that it is an instance of a particular class that is already defined.
2. You need to dynamically define plugin instances.
The Flag module defines a different Flag Type plugin instance for different entities. The entities in a Drupal site are not known beforehand and hence we cannot define one instance each for every entity. This calls for a plugin derivative implementation.

Lets add derivative plugins to our breakfast metaphor.

$ git checkout -f plugin-derivatives

Here's a new user story for the breakfast requirement. We are going to add desserts to our menu now. All desserts are of type Sweet. So, we define a derivative plugin called Sweet which is based on breakfast.

This calls for 3 changes as shown in the new directory structure outlined below:

1) Define the Sweet plugin instance class on which all our desserts are going to be based on.

/** * A dessert or two whould be great! * * * @Breakfast( * id = "sweet", * deriver = "Drupal\breakfast\Plugin\Derivative\Sweets" * ) */ class Sweet extends BreakfastBase { public function servedWith() { return array(); } }

Note the "deriver" property in the annotation.

2) Next, we define the deriver in the Derivative directory.

/** * Sweets are dynamic plugin definitions. */ class Sweets extends DeriverBase { /** * {@inheritdoc} */ public function getDerivativeDefinitions($base_plugin_definition) { $sweets_list = drupal_get_path('module', 'breakfast') . '/sweets.yml'; $sweets = Yaml::decode(file_get_contents($sweets_list)); foreach ($sweets as $key => $sweet) { $this->derivatives[$key] = $base_plugin_definition; $this->derivatives[$key] += array( 'label' => $sweet['label'], 'image' => $sweet['image'], 'ingredients' => $sweet['ingredients'], ); } return $this->derivatives; } }

3) The derivative gets sweets info from the sweets.yml present in the module root directory. This could even be an XML/JSON or any file format which holds metadata. I've used a YAML file for consistency's sake.

mysore_pak: label: 'Mysore Pak' image: 'https://upload.wikimedia.org/wikipedia/commons/f/ff/Mysore_pak.jpg' ingredients: - Ghee - Sugar - Gram Flour jhangri: label: 'Jhangri' image: 'https://upload.wikimedia.org/wikipedia/commons/f/f8/Jaangiri.JPG' ingredients: - Urad Flour - Saffron - Ghee - Sugar

The class hierarchy for derivative plugins looks a little big bigger now.

Clear your cache and you must be able to see the sweets defined in the yaml file in the breakfast choice dropdown of the user profile.

Enjoy your dessert!

That concludes our tour of Drupal 8 plugins. Hope you liked it and learnt something. Stay tuned for the next series about services.

Categories: Drupal

Colan Schwartz: Drupal-specific hosting: Choose a provider from those offering comprehensive platforms

23 March 2015 - 6:12pm
Topics: 

There are many Web hosting companies claiming their ability to host Drupal sites in the enterprise space. However, most of the time, these providers simply provide the hardware or a virtual machine (VM/VPS) with an operating system (OS) capable of hosting Drupal if you build the application stack, configure it and manage it all yourself. They may even claim that they can set all of this up for you, but they'll charge extra for the labour. They don't have a comprehensive platform where instances can be automatically deployed as needed.

What do I mean by a "platform"?

I'm considering a somewhat complex requirement: a solution that includes a fully-managed Drupal application stack with several environments where it is trivial to move code, databases and files between them.

While it seems like it would be difficult to find such a service, there are now several available. While these options may seem expensive relative to generic Web-site hosting, they'll save you immensely on labour costs, as you won't have to pay to do any of the following yourself:

  • Installation of the application stack on each environment (Dev, Staging and Prod, see below.)
  • Managing all OS software updates and security patches.
  • Managing the configuration between environments (a.k.a. Configuration Management)
  • Self-hosting and managing a deployment tool such as Aegir or creating and managing your own deployment scripts.
  • Developing, maintaining and documenting processes for your development workflow.

The environments in question are Dev (or Development, the integration server where code from all developers is combined and tested), Staging (or QA, where quality assurance testing is done with the content and configuration from Production/Live and the code from Dev) and Prod (Production/Live, your user-facing site). Typically, these three (3) server environments are set up for you, and the Drupal hosting provider provides a simple-to-use command-line (CLI) and/or Web interface to deploy code to Dev, to Staging and finally to Prod while allowing you to easily move site data (content and configuration) from Prod to Staging to Dev. Your developers then work in their own sandboxes on their laptops pushing code up through the environments, and pulling site data from them.

This allows you to significantly reduce or eliminate the resources you'll need for system administration and DevOps. You can focus your project resources on application development, which is to get your content management system up and running as quickly as possible, while leaving infrastructure issues to the experts. Even if these items are outsourced, they add additional costs to your project.

However, you may have specific requirements which preclude you from going with such a managed solution. You may have a need to keep the environments behind your corporate firewall (say to communicate securely with other internal back-end systems such as CRMs, authentication servers or other data stores) or your country/jurisdiction has strict privacy legislation preventing you from physically locating user data in regions where electronic communication is not guaranteed to be kept private. For example, in Canada, personal information can only be used for purposes that users have consented to (see PIPEDA). As a good number of the described hosting services rely on data centres in the United States, the PATRIOT Act there (which gives the US government full access to any electronic communication) could make it difficult to enforce such privacy protections.

At the time of this writing, the following Drupal hosting companies are available to provide services as described above. They're listed in no particular order.

I haven't had a chance to try all of these yet as I have clients on only some of them. It would be great if someone who's evaluated all of them were to publish a comparison.

This article, Drupal-specific hosting: Choose a provider from those offering comprehensive platforms, appeared first on the Colan Schwartz Consulting Services blog.

Categories: Drupal

Drupal Association News: Viva DrupalCon Latin America

23 March 2015 - 2:51pm

2015 started out strong with our first DrupalCon of the year, which took place from 10-12 February in Bogota, Columbia. Nothing feels better than to bring the power of DrupalCon to a new region where attendees can revel in their love for Drupal, the community, and enjoy time together. As people listened to the Driesnote, attended sessions and sprints, and celebrated with some Tejo, we heard a lot of “this is a real Con” and “it feels so good to experience this in my own backyard”.

Sharing the gift of DrupalCon with the Latin American community was a joy for Drupal Association staff and community organizers. It wouldn’t have happened without help from Aldibier Morales, Carlos Ospina, Ivan Chaquea, Nick Vidal, and Jairo Pinzon, who helped organize the event. Conversely, it better connected the Drupal Association with this region, helping us better understand the high level of contribution as well as new ways to support this region.

263 people attended DrupalCon Latin America from 23 countries including 12 Latin American countries. 63% of attendees said that this was their first DrupalCon, which underscores why it’s so important to bring DrupalCon to new parts of the world. Attendees were primarily developers from Drupal Shops, but there was more diversity than expected. The event also attracted a higher level of beginners than expected and 14% of attendees were women, which falls between DrupalCon Europe (10% women) and DrupalCon North America (22%). Below are some demographic tables that compare DrupalCon Latin America with DrupalCon Austin.

As you can imagine, the most attended sessions were focused on Drupal 8. DrupalCon Latin America was the first event to offer translated sessions and all sessions were recorded and posted to the DrupalCon YouTube Channel. Thanks to Lingotek, 20 additional session recordings were translated, too, and can be found on Youtube.

One of the big takeaways for Drupal Association staff was finding out how many attendees contribute to Drupal. When Megan Sanicki, COO, asked in her keynote introduction presentation how many people contributed, a large number of hands went up. It explains why DrupalCon Latin America had the largest percentage of attendees attend the sprint compared to any other DrupalCon --  38.4% of attendees showed up to make a difference. Thanks to the sprint leads, YesCT, alimac, DevelCuy, jackbravo and the other 19 sprint mentors, 101 people were able to participate in the sprints.

We’re also happy that financially the event achieved its budget goals. When planning DrupalCon Latin America, we knew that hosting the event in a new region would create budget challenges. We accepted that and were willing to operate this DrupalCon at a loss. We see this as an investment in a region that will grow because DrupalCon was hosted here. Below is the high level budget and further below is a more detailed view into the expenses.

DrupalCon Latin America Budget Budget Actual Income $150,150 $104,513.74 Expenses $250,750 $188,034.40 Net Profit -$99,920 -$83,520.66

Overall, DrupalCon Latin America was a success! Session evaluations came back strong and the event received a high Net Promoter Score of 80. Also, attendees felt that they received more value than expected (see chart below).

While we hoped for larger numbers, it’s important to point out that DrupalCon Amsterdam in 2005 had about 100 attendees. When the event returned in 2014, it hosted 2,300 people. All regions have to start somewhere and DrupalCons have the power to infuse community members with a burst of energy and passion that helps the community grow. We saw this immediately after DrupalCon Latin America with the growth of Global Training Days. Last year, the region hosted 7 trainings total, but right after DrupalCon Latin America, the region hosted 10 - not even ¼ of the way into the year. Additionally, three Latin American community members nominated themselves in the Drupal Association At-Large Board Elections.

We are thrilled that we were able to bring DrupalCon to new regions of the world. Be sure and attend the closing session of DrupalCon Los Angeles to find out where we are bringing DrupalCon next.


DRUPALCON STATISTICS DEMOGRAPHIC COMPARISONS

Business (sales, marketing) Front end (design, themer) C-Level Site Builder Other (PM, Trainer, etc) Site Administrator

Job Function Austin Latin America Developer 40% 48% Business (sales, marketing) 11% 12% Front end (design, themer) 13% 10% C-Level 9% 9% Site Builder 11% 8% Other (PM, Trainer, etc) 9% 12% Site Administrator 7% 3%

 

How I use Drupal Austin Latin America Drupal Shop 47% 61% Site Owner 30% 12% Freelance 5% 9% Evaluating 6% 4% Hobbyist 2% 2%

 

Skill Level Austin Latin America Advanced 37% 40% Intermediate 39% 38% Beginner 23% 22%

 

SESSION STATISTICS DrupalCon Latin America: Highest Attended Sessions Count #d8rules - Web-automation with Rules in Drupal 8 87 An Overview of the Drupal 8 Plugin System 70 Drupal 8 CMI on Managed Workflow 67 Getting Content to a Phone in less than 1000ms 58 AngularJS + Drupal = Un Dúo Superheróico! 52 DevOps, por donde comenzar? 49 The Future of Commerce on Drupal 8 (and beyond) 43 I Want it All and I Want it Now: Configuration Management and CI 38 SEO for Drupal 37

 

DrupalCon Latin America: Youtube views (as of 3/11/2015) # of views DrupalCon Latin America 2015: Keynote by Dries Buytaert 1053 DrupalCon Latin America 2015: Keynote by Larry Garfield 546 DrupalCon Latin America 2015: The Future of Commerce on Drupal 8 (and beyond) 407 DrupalCon Latin America 2015: Drupal 8 CMI on Managed Workflow 241 DrupalCon Latin America 2015: AngularJS + Drupal = Un Dúo Superheróico! 238
DRUPALCON FINANCIALS Expenses

 

  Staff Wages, Benefits, Overhead $106,621.54 Catering $11,784.76 Staff Travel & Accommodations $11,552.25 Event Planning $9,244.45 Registration Materials, Conference Supplies, Tees $8,180.90 Taxes, Fees, VAT $7,009.54 Speaker Fees, Travel Awards, Etc $6,973.16 Translation $6,772.00 IT, Wifi, Electrical $6,705.89 Archiving $5,500.00 Design $4,500.00 Conference Facility $3,013.78 Shipping $176.13 Total Expenses $188,034.4

 

Categories: Drupal

Drupal core announcements: Evolving and documenting Drupal core's structure, responsibilities, and decision-making

23 March 2015 - 9:41am

The Drupal project just turned 14 years old. There are now over 1 million known installations of Drupal, and Drupal.org has over 1 million users. Drupal 8 has over 2,700 contributors (almost three times that of Drupal 7) and over 13,000 commits so far (50% more commits per day on average than Drupal 7). I wanted to take an opportunity to reflect on our current governance structure and try to evolve the Drupal leadership team and decision-making, enable better scaling, and document both the formal and informal processes we have currently in place.

Over in the Drupal core issue queue, I've proposed an evolution to Drupal core's structure and decision-making process which documents how things are currently done, and also proposes some incremental improvements:

  1. Defines roles and responsibilities that are currently carried out by individuals within the core committer team: product managers, framework managers, and release managers. This is done to provide transparency, to help expedite decision-making, and to ensure that these roles are easier to fill in the future, as we can eliminate the requirement for core committers to be “superhuman” contributors capable of doing anything and everything, at all times.
    • This document also adds the concept of “provisional” product, framework, and release managers, without actual commit access, who work alongside the core committers until they gain the necessary experience to play a full committer role.
    • In so doing, the document also appoints two additional core committers—Alex Bronstein (effulgentsia) and Jess (xjm)—who have been playing this "provisional" role for some time now, informally.
  2. Lays out an explicit decision-making framework to make it clear who needs to be involved in what types of changes, and to what degree. This documents the process we already use, but also introduces some changes. The added transparency should make it easier for contributors who are proposing changes to direct their questions to the right people.
  3. Clearly outlines the role of subsystem maintainer (formerly component maintainer) as an active “maintenance” role: performing or organizing regular maintenance tasks: triaging the subsystem's queue(s), reviewing patches in need of review, etc. These responsibilities also come with a more formal opportunity to sign off on proposed changes that significantly affect the subsystem. The advantages to this are additional transparency, delegating and scaling responsibilities, and reducing the workload that currently falls to core committers. Going forward, subsystem maintainers who are not currently active will no longer be listed in MAINTAINERS.txt.

This document builds on ideas that have been blogged about or presented at Drupal events by many people, including Randy Fay (rfay), Larry Garfield (Crell), Cathy Theys (YesCT), Gábor Hojsty, Greg Dunlap (heyrocker), Jess (xjm), Alex Pott (alexpott), Nat Catchpole (catch), Jennifer Hodgdon (jhodgdon) and others. It has been reviewed by numerous people, including the existing core committer team. Special thanks to Angie Byron who has spent weeks helping me co-author this proposal.

Categories: Drupal

Drupalpress, Drupal in the Health Sciences Library at UVA: equipment booking system — content types

23 March 2015 - 8:16am

For our equipment booking system we needed two kinds of content types: reservation and equipment. Patrons would create nodes of the reservation content type. Staff would create nodes of the equipment content type(s). Because our library circulates a lot of different equipment we need a bunch of content types — one for each: Apple TV, Laptop, iPad Air, Digital Video Camera, Projector, etc. The equiment content types all need the same field structure — title, description, image, accessories and equipment category. It’s tedious creating these individually, but once you get one fully fleshed out (and the skeletons of the rest in place) then the Field Sync module will finish the job with the push of a button.

The reservation content type would be canonical for each kind of equipment. In other words, we don’t have to create a Reservation_iPad and a Reservation_Laptop and a Reservation_Projector, etc. There’s just one: Reservation. The way we accomplish this is by using an entity reference field that looks for any nodes of equipment content types.

When a patron creates a node of the reservation content type, he/she will select the equipment to be reserved in the entity reference field. This entity reference structure allows us to offer a pretty helpful feature for patrons navigating from a specific equipment page to the reservation form. An Entity Reference Prepopulate and Display Suite combination gives us a “Reserve This Item” link on equipment pages (say Apple TV – Copy 1) that sends the patron to a node/add reservation page that has that piece of equipment (in this case Apple TV – Copy 1) selected in the equipment field.

There’s good documentation out there for Entity Reference Prepopulate — check out this video. But it might be worth explaining how we built the URL that prepoluates the entity reference field. With Display Suite you can create a custom code field — we hardcode a URL to the node/add reservation form, with a token for the id of the currently viewed entity appended onto it. When the user clicks the link, the Entity Reference Prepopulate module kicks off, sees the id and builds the form with that entity referenced.

Categories: Drupal

Chromatic: Through the Looking-Glass: MidCamp 2015

23 March 2015 - 6:56am


photograph taken for Aaron Winborn (aaron), a long-time member of the Drupal community.

This last weekend I was fortunate to attend and speak at the second MidCamp in Chicago. It was hosted within the University of Illinois at Chicago campus and was a very well organized Drupal Camp. MidCamp drew a very diverse crowd (around 350 attendees, I believe) and had a schedule packed with solid sessions.

MidCamp becomes MADCamp

Prior to the event, plenty of Alice in Wonderland references were thrown around and there was even a “MADCamp” track, but it wasn’t entirely clear why. It was then revealed that MidCamp – tired of being the middle child – was rebranding itself as MADCamp (Midwest Area Drupal Camp). This was a creative move that added an entertaining twist to the atmosphere.

Keynotes

The keynote speakers were Tiffany Farriss, the CEO of Palantir.net and Drupal Association Treasurer, and Jen Lampton, a Founding Forker of Backdrop CMS and a notable member of the Drupal community.

Tiffany’s keynote, The Economics of Drupal Contribution, discussed the changes needed to make core contribution more attractive for organizations and individuals. Depending heavily on a small number individuals and their spare time leads to burnout and is not a sustainable model, she says. She also referenced a number of moves made by the Linux Foundation as ideas for helping solve those problems; including significantly shorter release cycles and a higher percentage of development being funded. Drupal 8 Accelerate is an example of an existing attempt to rethink the economics of core contribution.

Jen Lampton (photo by Marty Vernon)

Jen’s keynote was titled PHP for Everyone and gave a great overview of what PHP is and why it doesn’t deserve the bad rap it’s been given in the past. She outlined the arguments against it and rebutted them with its strengths. As she pointed out, PHP is currently involved with 80% of the web and is used by a number of large organizations like Facebook. These organizations are working hard to improve the language and each version sees significant improvements, continuing to modernize an otherwise older language.

I also enjoyed having a discussion with Jen about their experiences with Backdrop CMS thus far. After receiving some initial friction, it seems that the Drupal community has accepted and is embracing Backdrop. It will be very interesting to see the role that Backdrop plays and the audience it attracts as Drupal 8 is released and adopted.

Sessions

As mentioned, the schedule was packed with great sessions. I’m thankful to have had the opportunity to present a session about organizing Features. As for those I attended, there were two themes that stuck out to me the most: automation tools and headless Drupal.

Automation Tools

Fredric Mitchell, VP of Engineering at Better Weekdays, presented on using Grunt with Drupal. Among the Drupal tasks that can be automated with Grunt, using it with Drush Make provides a very interesting build workflow. Phase2, Fredric’s previous employer, has shared their grunt-drupal-tasks tools, along with a blog post about using them.

Allan Chappell of Promet Source presented another interesting Drupal 7 build workflow using Composer, the dependency manager of choice in the PHP community. He also pointed to a number of related tools Promet has shared, such as Drupal Tangler, and demoed how Composer can be used to manage Drupal 7 core, contributed modules, their dependencies, libraries, and patches.

Jeff Geerling, a Technical Architect of Acquia, introduced everyone to Ansible, a tool we began using recently at CHROMATIC. He demonstrated Ansible using Dramble, his cluster of 6 Raspberry Pi 2 computers; a combination of web servers, a load balancer, a Redis cache server, and a MySQL server. He installed Drupal 8 on the web servers and used LEDs to help demonstrate just how easy it is to manage servers with Ansible. Impressive!

Headless Drupal Steve Persch (photo by Marty Vernon)

Off with Drupal’s Head was a panel discussion led by Steve Persch, a senior engineer at Palantir.net. The consensus of the panel was… well… that there is no consensus. While there is plenty of talk about Headless Drupal, many things remain unclear. Where to cut off the head (what Drupal should and shouldn’t be responsible for) and when to use the headless approach is still up for debate and the right answer may depend on the project. Some consider it only useful for web applications while others recommend it only when fighting Drupal to build beautiful pages or forms isn’t worth the trouble. Regardless, a key takeaway was that a headless project is no less work. While it does avoid wrestling with the Drupal theme system, introducing a JavaScript framework is no simple task.

Steve also later presented Rendering HTML with Drupal: Past, Present and Future. He anticipates that many Drupal 7 projects will undergo redesigns without a corresponding Drupal upgrade, two tasks that often currently happen at the same time. Headless Drupal makes that easier and he sees clear decoupling as the future of rendering HTML with Drupal. He doesn’t, however, anticipate that a particular JavaScript MVC framework will be permanently paired with Drupal because front-end technologies are currently evolving at a much faster rate than back-end technologies and Drupal’s release cycle.

Wrapping Up

After Steve’s session I headed to Saturday night’s social event at the Moxee Restaurant and Brewery. The night was filled with great company, food, drinks, and entertaining bouts of table shuffleboard. Getting away from our code and bright screens never fails to bring the community closer together.

MidCamp/MADCamp was another excellent opportunity to meet and catch up with the myriad of personalities and companies that comprise the Drupal community. It was also a humbling reminder of how fast things move and how much more there is to learn. I recommend attending camps to anyone that has the opportunity. Being smaller than DrupalCon (North America, at least) allows them to become a more personal experience. That being said, I hope to see everyone again at DrupalCon Los Angeles in May!

Categories: Drupal

undpaul: A book about Configuration Management in Drupal 8

23 March 2015 - 5:54am

In December 2013, Packt Publishing asked us to write a book about the upcoming Drupal 8. They had seen the Drupal Association survey that showed the new feature Configuration Management was the most popular topic they wanted to learn about in Drupal 8. Since we are long-time evangelists of tracking configuration changes in code, we were excited about having the opportunity to write this book, which is expected to be published in March 2015 (like this week!). It's even more exciting because Packt actually donates a portion of sales of Drupal-related books to the Drupal Association. For this to work, you need to order or pre-order directly at Packt.

Since we did so much testing with and writing about Drupal 8, we also wanted to build something with it. So we built a microsite for the book and we were surprised about how smooth this worked. It took 9 hours on a Sunday to find an appropriate HTML template, install and configure Drupal and make it look the way it does now. After the book is published, the site will get some more functionality so we can publish questions and answers as well as errata. Since it will be quite a while until Drupal 8 is actually released, we are expecting there will be a few changes and some of our code might become outdated.

You can read a sample chapter in an article on Packt's website.

What will be in the book?

Chapter 1, Understanding Configuration Management, will give you a quick overview of Configuration Management. You will learn what types of configuration exist, why managing configuration is a good idea, and how to get started with it. It will provide a look at the several ways in which configuration was managed in Drupal 7 and then show how Drupal 8 approaches the problem.

Chapter 2, Configuration Management for Administrators, provides an introduction on how to use Configuration Management for users who are not developers, but administrators of a Drupal website who want to make use of the advantages of this new feature. We will show you how to use the Configuration Management interface and how to create a copy of your website, and you will learn how to move a configuration made on one site to another site.

Chapter 3, Drupal 8's Take on Configuration Management, will show you the inner workings of the Configuration Management system in Drupal 8. You will learn about config and schema files, and read about the difference between simple configuration and configuration entities.

Chapter 4, Configuration Management API, will teach you how to get your hands dirty and learn about the Configuration Management API of Drupal 8. Here, you will dive into the Simple Configuration API and learn how configuration can be overridden. Later, you will take a closer look at how to create custom configuration entity types, and we'll also teach you about the configuration's context system.

Chapter 5, The Anatomy of Schema Files, covers schema files and explains how Drupal uses them for Configuration Management. You will learn about the structure of schema files used by Drupal and write your own schema for custom configuration.

Chapter 6, Adding Configuration Management to Your Module, will teach you how to access configuration objects and how schema files are structured in the previous chapters. (You will surely want to know how to get all this fancy stuff into your shiny new module for Drupal 8). You will learn how to include the default configuration in custom modules, how to define and use your own configuration, and how to create configuration forms.

Chapter 7, Upgrading Your Drupal 7 Variables to Drupal 8 Configuration, will show you ways to convert your Drupal 7 variables into Drupal 8 Configuration objects and how to provide an upgrade path in your modules.

Chapter 8, Managing Configuration for Multilingual Websites, allows you to build comprehensive multilingual websites in which you can display a site's content in different languages and translate the user interface. While many features were built into Drupal's core in previous versions, building multilingual sites remained a very painful task. In this chapter, we will take a look at how Drupal 7 deals with different languages on a site and how Drupal 8 is trying to fix weaknesses from previous versions.

Chapter 9, Useful Tools and Getting Help, provides a list of links and tools provided by the Drupal community; these will be useful if you reach a point where you need help when dealing with Configuration Management.

Like what you see?

Go pre-order the book directly on Packt's website, or follow us on Twitter.

drupal planet english

Categories: Drupal

Iztok Smolic: Fastest way to build a landing page on your Drupal site

23 March 2015 - 5:53am

Landing pages are a must-have for any web business. Every marketer will tell you that pointing ads to a home page is a waste of money. Actually, any campaign should have a dedicated landing page to maximise the the conversion. Here is the problem: setting-up landing pages in Drupal is not easy. Modules like Panels and Display Suite sure […]

The post Fastest way to build a landing page on your Drupal site appeared first on Iztok.

Categories: Drupal

Web Omelette: Custom access control for Drupal 7 entities

23 March 2015 - 1:05am

Have you ever used hook_node_access() to control access to various node operations on your site? Have you found this hook unbelievably awesome? Thought to yourself, boy, I'm unstoppable now? Well, I sure did.

The problem is that Drupal 7 entities do not start and end with nodes and you may want to control access to other entities in the same way. However, there is no hook_taxonomy_term_access() or hook_fieldable_panels_pane_access() that you can use to apply this tactic. So what can you do in these cases?

The first thing is to understand that each entity implementation is different. Some have a centralised access callback for all the operations while others simply define permissions or access callbacks to be used directly inside the hook_menu() definition. And I'm sure there are also other ways of handling this but these I think are the most common.

In this article we are going to look at two entity examples: taxonomy terms (from core) and fieldable panels panes (from contrib). We will trace the access pipeline from request to response and see what we can do to intervene in this process and add our own logic. So let's begin.

Taxonomy terms

The first entity type we are going to look at is the regular taxonomy term introduced by core. It's actually pretty easy to understand how this entity type is built and what we can do in order to hook into the access pipeline.

If we take a look at taxonomy_menu(), we can quickly figure out which paths it creates to add and edit terms and what access callback and arguments are defined:

Adding terms to a vocabulary

$items['admin/structure/taxonomy/%taxonomy_vocabulary_machine_name/add'] = array( 'title' => 'Add term', 'page callback' => 'drupal_get_form', 'page arguments' => array('taxonomy_form_term', array(), 3), 'access arguments' => array('administer taxonomy'), 'type' => MENU_LOCAL_ACTION, 'file' => 'taxonomy.admin.inc', );

Editing a particular term

$items['taxonomy/term/%taxonomy_term/edit'] = array( 'title' => 'Edit', 'page callback' => 'drupal_get_form', // Pass a NULL argument to ensure that additional path components are not // passed to taxonomy_form_term() as the vocabulary machine name argument. 'page arguments' => array('taxonomy_form_term', 2, NULL), 'access callback' => 'taxonomy_term_edit_access', 'access arguments' => array(2), 'type' => MENU_LOCAL_TASK, 'weight' => 10, 'file' => 'taxonomy.admin.inc', );

By nature, viewing taxonomy term pages has to do with node access since they show a list of nodes so we will skip this aspect here and stick with just the add/edit operations.

So let's change the access callbacks and potential passed arguments inside a hook_menu_alter() implementation.

/** * Implements hook_menu_alter(). */ function demo_menu_alter(&$items) { $items['admin/structure/taxonomy/%taxonomy_vocabulary_machine_name/add']['access callback'] = 'demo_taxonomy_term_access'; $items['admin/structure/taxonomy/%taxonomy_vocabulary_machine_name/add']['access arguments'] = array(3, 'add'); $items['taxonomy/term/%taxonomy_term/edit']['access callback'] = 'demo_taxonomy_term_access'; $items['taxonomy/term/%taxonomy_term/edit']['access arguments'][] = 'edit'; }

So what happens here? We are simply replacing the access callback definition for these two menu items with our own custom function demo_taxonomy_term_access(). Additionally, we standardise a bit the arguments this function gets: $entity (either term or vocabulary object) and $op (add or edit). This covers both cases.

Now let's write our callback function:

/** * Access callback for taxonomy term add/edit operations * * @param null $entity * @param null $op * @return bool */ function demo_taxonomy_term_access($entity = null, $op = null) { if ($op === 'add') { return user_access('administer taxonomy'); } if ($op === 'edit') { return taxonomy_term_edit_access($entity); } }

Inside the function we run a check on $op and perform the access logic we want. In doing so, we make use of the $entity object that can be either the term being edited or the vocabulary to which a new term is added. In this example we are replicating exactly the intended access checks of the Taxonomy module. To add a term, a user needs to have the administer taxonomy permission while to edit one it needs either the same permission or a vocabulary specific permission (as seen inside taxonomy_term_edit_access()). Now it's up to you to include inside this logic whatever else you need. And you end up with something not so dissimilar to hook_node_access() but for taxonomy terms.

Fieldable Panels Panes (FPP)

FPP is a contributed module that creates an entity type that is primarily used inside a Panels context. Regardless of any of this though, it too exposes CRUD operations on the entities of this type. And consequently, there are access implications. So let's see how we can hook into this pipeline by starting where we did with the Taxonomy module: at fieldable_panels_panes_menu().

By looking inside this hook implementation we can find many defined paths which relate to these CRUD operations. And we also see that many of them have fieldable_panels_panes_access() as the access callback with some specific arguments passed to it.

But what does this function actually do? Nothing but taking the parameters and deferring to the controller class responsible for this entity type and its access() method. And by checking fieldable_panels_panes_entity_info(), the principle function responsible for defining the entity type, we find that this is the PanelsPaneController class. In there, we find all the logic for determining access rights for various operations.

Now that we know all this, what can we do to hook into this pipeline? We could do like before and override the hook_menu() implementation. But since there are so many menu items and the FPP class controller is already doing such a nice job, that may be counter productive. So let's instead override the entity definition and replace the class controller with one of ours that extends PanelsPaneController. In there, we then do what we want.

First, we implement hook_entity_info_alter():

/** * Implements hook_entity_info_alter(). */ function demo_entity_info_alter(&$entity_info) { $entity_info['fieldable_panels_pane']['controller class'] = 'DemoPanelsPaneController'; }

Right after this, we create a file inside our module called DemoPanelsPaneController.inc which contains the following to start with:

<?php /** * Overrides fieldable panels panes controller functionality */ class DemoPanelsPaneController extends PanelsPaneController { }

Finally, we edit the module's .info file and make sure it loads this file:

files[] = DemoPanelsPaneController.inc

Then we clear the cache. If all went well, nothing really has changed on the site in terms of functionality. However, the DemoPanelsPaneController class is being used for controlling the fieldable_panels_pane entity type. And since this one extends PanelsPaneController, all previous functionality remains. It follows to now override the access() method and include our own logic to it:

public function access($op, $entity = NULL, $account = NULL) { // $account not always full (defaults to current user) return parent::access($op, $entity, $account); }

In the example above, nothing is really changed because the logic is deferred back to the parent class. But you could add some logic in addition or instead of that depending on various contextual factors.

However, I strongly recommend/warn you to stick to the minimum amount of deviation from default is needed, and for all rest, defer back to the original logic. This is to prevent the opening of any security holes. For example, if your access() method looks like this:

public function access($op, $entity = NULL, $account = NULL) { if ($op === 'update') { return false; } }

You are indeed denying access to the edit form but now anybody can create and delete entities because there is no more check on those operations. So make sure you understand this and do not leave any loopholes. The fix in this case would be:

public function access($op, $entity = NULL, $account = NULL) { if ($op === 'update') { return false; } return parent::access($op, $entity, $account); }

If the operation is edit, the access is denied for everybody (probably not a good idea but suitable for this demo purpose). However, if the operation is delete, create or view, we defer to the logic of the parent class to handle those cases. In which case the default FPP permissions will be used.

Conclusion

In this article we've seen two ways we can hook into the access checking pipeline of entities in Drupal 7. We've learned that there is more than just one way of going about it depending on how the entity type in question has been defined. The purpose was to illustrate how you can approach the matter and where you need to look in order to find a solution. Hope this helps.

In Drupal var switchTo5x = true;stLight.options({"publisher":"dr-8de6c3c4-3462-9715-caaf-ce2c161a50c"});
Categories: Drupal

Drupal core announcements: Plan to finalize the Migration system

22 March 2015 - 9:56pm

If you move to Drupal 8 from Drupal 6/7, you'll be using the new core migration system.

Migrate team lead benjy has just posted a plan to finalize the migration system, a "meta" issue which outlines what work's already been completed, what's left to be done, what's blocking what, and how to get involved.

Migrations are an extremely high-impact place to throw time and energy, so if fixing Drupal 8 release blockers isn't your thing, but being able to actually move to Drupal 8 when it's ready is, please jump in and lend a hand! :D (Especially if you've worked with Migrate module in D7 contrib.)

Categories: Drupal

Chen Hui Jing: Drupal 101: Creating custom content with Panels

22 March 2015 - 5:00pm

If you ever find yourself needing to create a static page in Drupal, perhaps for a temporary landing page or an under-construction page, while the site is being fleshed out behind the scenes, an option to consider is via Panels. I was in the process of building the DrupalCamp Singapore 2014 website and needed to put up a temporary home page. Using Panels gave me the option of hand-coding the HTML for the page. To do this, you will also need to install the Chaos tools suite (ctools).

  1. Enable the Panels, Chaos tools and Page manager (comes with ctools) modules.

    drush en panels ctools page_manager -y
  2. Once all the required modules are...
Categories: Drupal

groups.drupal.org frontpage posts: Registration is Live for Drupal Dev Day NYC 2015! (#D3nyc15)

22 March 2015 - 12:20pm
Start:  2015-04-19 09:00 - 17:00 America/New_York Drupalcamp or Regional Summit Organizers:  joebachana richbaldwin mdorman amycham forestmars

Registration is now up for D3NYC15, to be held Sunday, April 19th at John Jay College in Midtown Manhattan. To reserve your seat, follow this link: http://goo.gl/22LnX5.

The camp website may be found at http://www.drupalcamp.nyc.

Drupal Dev Day NYC 2015 will be a free, full-day Drupal unconference and Drupal 8 sprint event. All skill levels are welcome at Drupal Dev Day NYC 2015. The content is determined by attendees at the beginning of the day, but you can expect to find sessions and conversations on topics ranging from the most basic to advanced.

Among the exciting details of the camp include:
• Morning coffee, bagels and a schmear (wouldn't be a NYC camp without 'em!)
• Beginning Drupal training presented by Bleen!
• A Drupal Ladder/mentoring room, where you can get your environment set up and learn to code for Drupal
• Drupal 8 codesprints
• Sessions all day, picked by us all and presented by drupalists among us or collaboratively in BoF format.

If you are an organization interested in helping to sponsor this event, please contact Matt Dorman (mdorman) for more details, or you can go to the registration page and select your level of sponsorship commitment. Thank you in advance!

For those people interested in volunteering on the day of the event, please ping Joe Bachana (joe@bachana) or post a comment to this event page.

Watch this Event page and follow @DrupalNYC (https://twitter.com/drupalnyc) on Twitter or our Facebook page (https://www.facebook.com/Drupalcampnyc) for the latest updates!

Categories: Drupal

DrupalOnWindows: Deploying changing module dependencies with Drupal

21 March 2015 - 10:00pm
Language English

Deployments are often one of the most important aspects of the Drupal development cycle. But sometimes, due to time and/or budget constraints (or the maturity of your company) developers clone databases downstream, manually reproduce content on production environments, and rely on other bad practices on a regular basis.

Today we will show you how we manage small (but critical) changes in module dependencies for our custom modules here at www.DrupalOnWindows.com.

More articles...
Categories: Drupal


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