By John K. VanDyk, Matt Westgate
ISBN-10: 1590597559
ISBN-13: 9781590597552
Drupal is likely one of the preferred content material administration structures in use this day. With it, you could create a number of community-driven websites, together with blogs, boards, wiki-style websites, and lots more and plenty extra. professional Drupal improvement used to be written to arm you with wisdom to customise your Drupal install notwithstanding you spot healthy. The e-book assumes that you just already own the information to put in and produce a typical set up on-line. Then authors John VanDyk and Matt Westgate delve into Drupal internals, displaying you ways to really make the most of its robust architecture.You'll the way to create your personal modules, enhance your individual topics, and bring your individual filters. you will research the internal workings of every key a part of Drupal, together with consumer administration, classes, the node approach, caching, and a number of the APIs on hand to you. in fact, your Drupal-powered website isn't really powerful until eventually you could successfully serve pages on your viewers. As such, the authors have incorporated the knowledge you must optimize your Drupal set up to accomplish good less than high-load events. additionally featured is info on Drupal safety and top practices, in addition to integration of Ajax and the internationalization of your Drupal website. easily positioned, when you are operating with Drupal in any respect, then you definitely desire this book.* This ebook is written by means of Drupal middle developers.* Drupal structure and behaviour are mapped out visually.* universal pitfalls are pointed out and addressed.* Chapters supply standard dialogue and connection with why issues paintings they manner they do, not only how.* front topic encompasses a foreword through Dries Buytaert, Drupal founder.
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Sample text
It is time to take the browser’s request and hand it off to the PHP function that will handle it. The mapping between URLs and functions that handle them is accomplished using a callback registry that takes care of both URL mapping and access control. Modules register their callbacks using the menu hook (for more detail, see Chapter 4). When Drupal has determined that there exists a callback to which the URL of the browser request is mapped and that the user has permission to access that callback, control is handed to the callback function.
Figure 3-3. Enhanced options form using check box, radio button, and text field options Validating User-Submitted Settings If system_settings_form() is taking care of the form for us, how can we check whether the value entered in the Annotations per node field is actually a number? Can we hook into the form submission process somehow? Of course we can. We just need to define a validation function in our form definition and then write the validation function. /** * Define the settings form. '), '#default_value' => variable_get('annotate_limit_per_node', 1), '#size' => 3 ); // Define a validation function.
In Drupal, the theme layer is responsible for creating the HTML that the browser will receive. Drupal can use several popular templating approaches, such as Smarty, Template Attribute Language for PHP (PHPTAL), and PHPTemplate. The important thing to remember is that Drupal encourages separation of content and markup. Drupal allows several ways to customize and override the look and feel of your web site. The simplest way is by using a cascading style sheet (CSS) to override Drupal’s built-in classes and IDs.
Pro Drupal Development by John K. VanDyk, Matt Westgate
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