Drupal 7 Module Development phần 3 potx

... that you understand the basics of Drupal& apos;s user access system, we can explore how modules can extend that system. First, a little history lesson.Until Drupal 7, hook_permission() was known ... search'), ), );}The module declares three separate permissions in a manner typical to Drupal modules. The rst permission is for administrative conguration of the module. These sorts of ... http://api .drupal. org/api/function /drupal_ access_denied /7 However, what does this mean in practice?One advantage of using a menu callback is that if access is denied for the page request, Drupal...

... of the old Drupal les from your site including any old Drupal 6 modules and themes. This will prevent the old les from conicting with Drupal 7. 6. Download and unpack Drupal 7 if you have ... Site Building with Drupal 7 [ 58 ]Selecting a content type to createTo create content in Drupal 7, rst log in to your site and then click on Content from the site toolbar. Drupal will now display ... with Drupal. Let's look at the entire le and then break down each section independently.; $Id: default.info,v 1.8 2009/11/10 17: 27: 54 webchick Exp $name = Drupal description = Create a Drupal...

... wrapper 32 0Images in Drupal 32 6Image API 32 6Image Styles 33 1Creating image effects 33 4Creating image styles from a module 33 9Summary 34 2Chapter 12: Installation Profiles 34 3Introducing installation ... 31 1ajax_command_settings 31 2Summary 31 2Chapter 11: Working with Files and Images 31 3The Twitpic and watermark modules 31 3Files in Drupal 31 4File API 31 6Stream wrappers 31 9Creating a stream wrapper 32 0Images ... profiles 34 3 Drupal distributions 34 4Setting up a distribution 34 4Standard and minimal profiles 34 4Creating a profile directory 34 4Profile modules and themes 34 5Creating profiles 34 5Enabling modules...

... http:/ /drupal. org/project/develCreating Your First Module [ 32 ]The next directive is the core directive: core = 7. x. This simply declares which main-line version of Drupal is required by the module. All Drupal 7 modules will have ... main module code is in MODULENAME/MODULENAME .module, a test should be in MODULENAME/MODULENAME.test. The testing framework will automatically pick it up.Starting outAs with other les in a module, ... in the module& apos;s .info le. All we need to do is add it to the les array:;$Id$name = Firstdescription = A first module. core = 7. xpackage = Drupal 7 Development files[] = first .module files[]...

... chapter. In Drupal 6, drupal_ get_form() returned a fully rendered HTML form. This has been changed in Drupal 7 in order to allow more exibility in theming and easier form manipulation. drupal_ get_form() ... the form elements dened by Drupal as well as the properties each one implements, visit:http://api .drupal. org/api /drupal/ developer topics forms_api_reference.html /7 '#type' => 'textfield',The ... access to Drupal pages, acting as one of the central gatekeepers of Drupal security. Drupal module developers can map paths to Drupal functions by implementing hook_menu(), which adds paths to...

... replacement.In Chapter 7, Creating New Fields, we will begin examining Drupal 7& apos;s new Field API, the core implementation of what was formerly the CCK module. Chapter 6[ 171 ]Submit callbackThe ... of Drupal, tokens were implemented using the contributed module named, not surprisingly, Token. This functionality proved to be so popular and widely used that it was included in core for Drupal ... ->execute();Chapter 6[ 1 53 ]The Schema API allows database-agnostic denition and manipulation of the tables in Drupal& apos;s SQL database.First, let's create a new module called "artwork"....

... access rules.In Drupal 7, any module may declare node access rules. This is a change from the earlier versions, and it provides some of the most powerful tools for Drupal development. In this ... 235 ]Handling AJAX callbacks securely Drupal 7 comes with an enhanced AJAX framework that makes it easy to build interactive display elements for pages and forms. The security problem for Drupal ... name="form_build_id" id="form-049 070 cff46eabd3b069f980066b7ad4" value="form-049 070 cff46eabd3b069f980066b7ad4" /> <input type="hidden" name="form_token"...

... exception handling, in Drupal 7 we can write a simple extension module that will modify the behavior of the parent module. ••Chapter 10[ 30 1 ] Drupal specific JavaScriptWithin Drupal there are ... be an h3 tag instead of an h2 tag? This is where Drupal JavaScript theming comes in.A module should provide a theming function within the Drupal. theme.prototype namespace. Then, the module ... function(text) { return '<h3>' + text + '</h3>'; }})(jQuery); Drupal. theme() will call Drupal. theme.hello() instead of Drupal. theme.prototype.hello(). The...

... 11[ 33 3 ]This is where you can start adding new manipulations (or, in Drupal parlance, 'effects') to your image. As you can see from the drop-down menu shown, all of the standard Drupal ... effect will be available for use in Image Styles, the Drupal 7 implementation of the Imagecache module. Files in Drupal When you installed Drupal for the rst time, you probably got the following ... Files and Images[ 31 6 ]File APIIn Drupal 6, most le handling functionality was provided through a rough core API combined with contributed modules such as Filefield. Drupal 7 provides a more...