A Programmer's Guide to Drupal by Jennifer Hodgdon

By Jennifer Hodgdon

If you’re an internet programmer new to Drupal, this publication indicates you which of them programming ideas you could use—and that you may still avoid—when development customized net functions with this content material administration framework. Drupal has its personal set of programming rules that require a distinct method, and plenty of programmers make error while counting on talents they’ve used for different tasks. the information during this publication assist you in the course of the transition via demonstrating which programming practices comply with the “Drupal way,” and which don’t.

If you’re accustomed to personal home page, you’ll fast the best way to make the most of the robust Drupal API.
* Get an entire evaluation of Drupal, together with Drupal center and add-on modules and subject matters
* examine Drupal’s simple programming ideas, equivalent to the facility to customise habit and output with hooks
* detect universal Drupal programming mistakes—and why hacking is one among them
* discover particular parts the place you could placed your programming talents to paintings
* examine programming suggestions and instruments that can assist you excellent and debug your purposes

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Extra resources for A Programmer's Guide to Drupal

Sample text

The Drupal usability team has done usability studies and proposed changes that have greatly improved the usability of Drupal—there was a large usability push for Drupal version 7, and this is expected to continue through future versions of Drupal. At times, usability and accessibility can be at odds. For instance, usability studies might show that a drag-and-drop interface for ordering menu items is much faster and more intuitive than an interface where you assign numerical weights to define the order, but blind users and users who have mobility limitations that preclude use of a mouse cannot use drag-and-drop interfaces, so the drag-and-drop interface has accessibility problems.

You’ll save time by taking advantage of previous efforts by others. • You can use code that has been reviewed for security problems and tested on many other sites instead of custom code that is for only your site. • You can take advantage of the internationalization and translation capabilities of built-in Drupal systems. Here are some examples of Drupal site building knowledge you should explore in order to avoid unnecessary and tedious programming: Customizing fielded content display The core Fields administrative interface provides a lot of flexibility in defining how fields are displayed in content, including the order of fields, label placement, data formatting, and which fields are shown.

Function mymodule_update_7001() { db_change_field('mymodule_foo', 'bar', 'bar', array( 'description' => 'Untranslated description of this field', 'type' => 'varchar', 'length' => 150, 'default' => '', )); db_add_field('mymodule_foo', 'bay', array( 'description' => 'Untranslated description of this field', 'type' => 'varchar', 'length' => 50, 'default' => '', )); } 2. Edit your original hook_schema() implementation function, making correspond‐ ing changes to the schema. 3. Make changes in your module code to use the new schema.

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