Programmer's Guide to Drupal. Principles, Practices, and Pitfalls. 2nd Edition

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• Preface
  • Intended Audience
  • How to Use This Book
  • Drupal Versions
  • Conventions Used in This Book
  • Using Code Examples
  • Safari Books Online
  • How to Contact Us
  • Acknowledgments
• 1. Overview of Drupal
  • What Is Drupal?
    • Drupal Core
    • Drupal Add-Ons: Modules, Themes, Distributions, and Translations
      • Finding Drupal add-ons
  • The Evolution of Drupal
  • How Drupal Handles HTTP Requests
    • HTTP Request Handling in Drupal 7
    • HTTP Request Handling in Drupal 8
  • The Drupal Cache
    • Drupal 7 Cache API
    • Drupal 8 Cache API
  • Automatic Class Loading in Drupal
• 2. Drupal Programming Principles
  • Principle: Drupal Is Alterable
    • Setting Up a Module or Theme
      • Where to put modules and themes
      • Creating a sub-theme
    • The Basics of Module and Theme Hook Programming
    • Making Your Module Output Themeable
    • The Basics of Drupal 8 Plugin Programming
      • Defining a plugin type
      • Creating a plugin manager
      • Implementing a plugin in a module
    • Drupal 8 Services and Dependency Injection
      • Basic concepts: Services, Containers, and Dependency Injection
      • Defining a service
      • Service tags
      • Overriding services
      • Rebuilding the container
    • Interacting with the Drupal 8 Event System
  • Principle: Drupal Separates Content, Configuration, and State Data
    • Information Storage in Drupal 7
    • Information Separation in Drupal 8
    • Configuration API in Drupal 8
      • Configuration file format and schema in Drupal 8
      • Simple configuration API in Drupal 8
      • Configuration entities in Drupal 8
      • Configuration overrides in Drupal 8
    • State API in Drupal 8
  • Principle: Drupal Is International
    • Internationalizing User Interface Text
    • Internationalizing User-Entered Text in Drupal 7
    • Internationalizing User-Entered Text in Drupal 8
  • Principle: Drupal Is Accessible and Usable
  • Principle: Drupal Is Database-Independent
    • Setting Up Database Tables: Schema API and hook_update_N()
    • Querying the Database with the Database API
      • Very simple queries
      • Dynamic queries
  • Principle: Drupal Is Secure; User Input Is Insecure
    • Cleansing and Checking User-Provided Input
    • Checking Drupal Permissions
      • Drupal cores main permission system
      • Permissions and security in forms
      • Permissions in displaying and operating on content
  • Principle: Drupal Code Is Tested and Documented
• 3. Common Drupal Programming Mistakes
  • Mistake: Programming Too Much
    • Avoiding Custom Programming with Fielded Data
    • Defining Theme Regions for Block Placement
  • Mistake: Overexecuting Code
    • Mistake: Executing Code on Every Page Load
    • Mistake: Using an Overly General Hook
  • Mistake: Saving PHP Code in the Database
  • Mistake: Working Alone
    • Participating in Groups and IRC
    • Reporting Issues and Contributing Code to the Drupal Community
    • Contributing to the Drupal Community in Other Ways
• 4. Drupal Programming Examples
  • Registering for URLs and Displaying Content
    • Registering for a URL in Drupal 7
    • Altering a URL Registration in Drupal 7
    • Registering for a URL in Drupal 8
    • Providing Administrative Links
    • Altering Routes and Providing Dynamic Routes in Drupal 8
    • Registering a Block in Drupal 7
    • Registering a Block in Drupal 8
    • Creating Render Arrays for Page and Block Output
    • Render Arrays in Drupal 8
    • Generating Paged Output
  • Using the Drupal Form API
    • Form Arrays, Form State Arrays, and Form State Objects
    • Basic Form Generation and Processing in Drupal 7
    • Basic Form Generation and Processing in Drupal 8
    • Creating Confirmation Forms
    • Adding Autocomplete to Forms
    • Altering Forms
  • Programming with Ajax in Drupal
    • Setting Up a Form for Ajax
    • Wrapper-Based Ajax Callback Functions
    • Command-Based Ajax Callback Functions in Drupal 7
    • Command-Based Ajax Callback Functions in Drupal 8
  • Programming with Entities and Fields
    • Terminology of Entities and Fields
    • Defining an Entity Type in Drupal 7
      • Step 1: Implement hook_entity_info()
      • Step 2: Implement hook_schema()
      • Step 3: Add predefined fields in hook_install()
      • Step 4: Set up display
      • Step 5: Set up editing and management
      • Step 6: Enable your module
    • Defining a Content Entity Type in Drupal 8
      • Step 1: Define the entity interface and class
      • Step 2: Define handlers
      • Step 3: Set up routing and links
      • Step 4: Add Views integration
      • Step 5: Enable your module
    • Defining a Configuration Entity Type in Drupal 8
      • Step 1: Define the configuration schema
      • Step 2: Define the entity interface and class
      • Step 3: Define handlers
      • Step 4: Define routing and route controllers
      • Step 5: Enable your module
    • Querying and Loading Entities in Drupal 8
    • Defining a Field Type
      • Defining a field type in Drupal 7
      • Defining a field type in Drupal 8
    • Programming with Field Widgets
      • Defining a field widget in Drupal 7
      • Defining a field widget in Drupal 8
      • Repurposing an existing field widget
    • Programming with Field Formatters
      • Defining a field formatter in Drupal 7
      • Defining a field formatter in Drupal 8
  • Creating Views Module Add-Ons
    • Views Programming Terminology and Output Construction
    • Setting Up Your Module for Views in Drupal 7
    • Providing a New Views Data Source
    • Adding Handlers to Views
    • Adding Fields and Relationships to an Existing Views Data Source
    • Providing a Style or Row Plugin to Views
    • Providing Default Views
  • Creating Rules Module Add-Ons in Drupal 7
    • Providing Custom Actions to Rules
    • Providing Default Reaction Rules and Components
  • Programming with CTools in Drupal 7
    • Implementing CTools Plugins for Panels
      • Determining plugin background information
      • Notifying CTools about plugin implementations
      • Writing the plugin implementation code
    • Providing Default CTools Exportables
• 5. Programming Tools and Tips
  • Where to Find More Information
    • Drupal Site Building and General Drupal Information
    • Drupal Programming Reference and Background
      • Using api.drupal.org
    • PHP Resources
    • Database Resources
    • Other Web Technology Resources
  • Drupal Development Tools
  • Discovering Drupal API Functions and Classes
  • Other Programming Tips and Suggestions
• Index

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