Learning Drupal 6 Module Development -- Table of Contents -- Learning Drupal 6 Module Development -- Credits -- About the Author -- About the Reviewers -- Preface -- What This Book Covers -- Who Is This Book For? -- Conventions -- Reader Feedback -- Customer Support -- Downloading the Example Code for the Book -- Errata -- Questions -- 1. Introduction to Drupal Modules -- Drupal's Architecture -- Module Architecture -- Core Modules -- Hooks -- Themes -- Crucial Drupal Concepts -- Nodes -- Comments Are Not Nodes -- Users -- Access and Security -- Blocks and Page Rendering -- Menus -- Forms -- Database and Schema APIs -- Developers' Tools -- Developer Module -- Coder Module -- A Word on Our Demonstration Site -- Summary -- 2. Creating Our First Module -- Starting Out -- A Place for the Module -- Creating a .info File -- A Basic .module File -- Our Goal: A Block Hook -- Starting the .module -- The hook_block() Implementation -- The t() Function -- A view Operation -- Installing a Module -- Step 1: Copying the Module -- Step 2: Enabling the Module -- Step 3: Displaying the Module's Content -- Using Goodreads Data -- Modifying the Block Hook -- Retrieving XML Content over HTTP -- The watchdog() Function -- Processing the HTTP Results -- Formatting the Block's Contents -- Finishing Touches: hook_help() -- Summary -- 3. The Theme System -- The Theme System's Architecture -- Theme Templates -- Theme Engines -- Theme Hooks -- Creating a Custom Theme -- Organization of Themes -- Sub-themes (Derivative Themes) -- How Each Theme Functions -- Creating a Theme -- Creating the Theme Directory -- A .info File -- A CSS Stylesheet -- A PHPTemplate Theme -- Template Structure -- A Page Template for Descartes -- Using PHP to Override Theme Behavior -- Custom Breadcrumbs -- Interacting with Other Theme Functions -- template.php Gotchas -- Creating a Screenshot.

From Here to a Full Theme -- Summary -- 4. Theming Modules -- Our Target Module: What We Want -- Creating a Custom Content Type -- Using the Administration Interface to Create a Content Type -- Content and Nodes -- The Foundations of the Module -- A Simple Database Lookup -- Getting the Node ID -- Getting the Node's Content -- Theming Inside a Module -- Registering a Theme -- Creating a Theme Hook Function -- Adding a Stylesheet -- Overriding the Default Theme from a Theme -- A Quick Clarification -- Overriding the Default Theme's CSS -- Overriding Layout with Templates -- Summary -- 5. Using JavaScript and AJAX/JSON in Modules -- Picking up Where We Left Off -- Introducing jQuery -- Modifying HTML with jQuery -- Checking for JavaScript Support with Drupal -- Namespaces in JavaScript -- Drupal's Namespace -- A Drupal Function: Drupal.jsEnabled() -- Delaying JavaScript Execution with jQuery -- Including JavaScript from the Module's Theme -- Writing a Drupal AJAX/JSON Service -- The JSON Format -- Our Module Roadmap -- Server Side: Defining a New Page -- Creating a JSON Message -- Mapping a Function to a URL -- Passing PHP Settings to JavaScript -- Client Side: AJAX Handlers -- A JavaScript Function to Get JSON Content -- Adding an Event Handler -- Summary -- 6. An Administration Module -- The emailusers Module -- The Beginning of the Module -- Mail Configuration -- Registering an Administration Page -- A Detailed Look at the Path -- Marking the Path as an Administration Page -- Path Registration Parameters -- Defining the Callback Function -- Handling Forms with the Forms API (FAPI) -- Loading a Form with drupal_get_form() -- A Form Constructor -- Handling Form Results -- The Form Submissions Callback -- Sending Mail with the Mail API -- Formatting Mail with hook_mail() -- Altering Messages with hook_mail_alter() -- Altering Hooks.

Adding a Mail Footer -- Incorporating the Module into Administration -- Modifying the User Profile with hook_user() -- Constructing the Content -- Summary -- 7. Building a Content Type -- The biography Module -- The Content Creation Kit -- The Starting Point -- The Module Installation Script -- The Schema API: Defining Database Structures -- A First Look at the Table Definition -- Defining Fields (Columns) -- Defining Keys and Indexes -- Correlating the New Table with Nodes -- The Content Creation Form -- Overriding hook_form() Defaults -- Adding New hook_form() Form Elements -- Access Controls -- Database Hooks -- Database Inserts with hook_insert() -- Updating and Deleting Database Records -- Hooks for Getting Data -- Loading a Node with hook_load() -- Preparing the Node for Display with hook_view() -- Theming Biography Content -- Registering a Theme -- The biography_info.tpl.php Template -- The Results -- Summary -- 8. Filters, Actions, and Hooks -- The sitenews Module -- Getting Started -- Citing Dependencies in the .info File -- The Beginning of the .module File -- A Simple Content Type, Defined in Code -- Creating Filters and an Input Format -- Creating Filters -- The First Filter: News Brief Placeholders -- The Second Filter: Remove All Tags -- Adding an Input Format -- The Beginning of an Action -- Implementing hook_action_info() -- The Action Callback -- Defining a Hook -- Invoking a Custom Hook -- So What Is a Hook? -- Creating a hook_sitenews() Function -- Implementing hook_sitenews() in Other Modules -- In the philquotes Module -- In the biography Module -- Theming Content before Returning It -- Completing the Action: Theming and Mailing -- Theme Functions -- The hook_mail() Implementation -- Adding a Trigger -- Summary -- 9. An Installation Profile -- Introducing Installation Profiles -- Why Use Installation Profiles?.

Setting up a Distribution -- Creating a Profile Directory -- Programming Profiles -- The .profile Script -- The Details Function -- The Modules List -- The Installation Task System -- The Profile Task -- A Basic Profile Task -- A Complex Profile Task -- Creating a Content Type -- Creating a Trigger -- Moving to the Next Task -- The 'profile' Task is Special -- Registering a New Task -- The Theme Selection Form -- Returning to the philosopherbios_pick_theme Task -- The Submission Handler -- Finishing the Installation Profile -- Packaging the Distribution -- Summary -- Index.