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• Drupal 9 Module Development
• Third Edition
• Why subscribe?
• Foreword
• Contributors
• About the author
• About the reviewers
• Packt is searching for authors like you
• Preface
• Who this book is for
• What this book covers
• To get the most out of this book
• Download the example code files
• Conventions used
• Get in touch
• Reviews
• Chapter 1: Developing for Drupal 9
• Introducing Drupal (for developers)
• How did we get to Drupal 9?
• Developing for Drupal
• Technologies that drive Drupal
• PHP
• Databases and MySQL
• The web server
• Drupal architecture
• Drupal’s major subsystems
• Tools for developing in Drupal
• Summary
• Chapter 2: Creating Your First Module
• Creating a module
• Your first hook implementation
• Route and controller
• Services
• Using services in Drupal
• Injecting the service into our Controller
• Invoked Controllers
• The Form API
• Altering forms
• Custom submit handlers
• Rendering forms
• Service dependencies
• Blocks
• Our first block plugin
• Block configuration
• Working with links
• The URL
• The link
• Which way to link?
• Event Dispatcher and redirects
• Redirecting from a Controller
• Redirecting from a subscriber
• Dispatching events
• Summary
• Chapter 3: Logging and Mailing
• Logging
• The Drupal logging theory
• Our own logger channel
• Our own logger
• Logging for Hello World
• Logging recap
• Mail API
• The theory behind the Mail API
• Implementing hook_mail()
• Sending emails
• Altering someone else’s emails
• Custom mail plugins
• Mail API recap
• Tokens
• The Token API
• Using tokens
• Defining new tokens
• Tokens recap
• Summary
• Chapter 4: Theming
• Business logic versus presentation logic
• Twig
• Theme hooks
• Theme hook suggestions
• Render arrays
• The structure of a render array
• The render pipeline
• Assets and libraries
• Libraries
• Common theme hooks
• Lists
• Links
• Tables
• Attributes
• Layouts
• Defining layouts
• Rendering a layout
• Theming our Hello World module
• Summary
• Chapter 5: Menus and Menu Links
• The menu system
• Menus
• Menu links
• MenuLink trees
• Rendering menus
• Working with menu links
• Defining menu links
• Manipulating menu links
• Defining local tasks
• Defining local actions
• Defining contextual links
• Summary
• Chapter 6: Data Modeling and Storage
• Different types of data storage
• State API
• TempStore
• Private TempStore
• Shared TempStore
• Tempstore recap
• UserData API
• Configuration API
• Introduction
• Configuration storage
• Configuration recap
• Entities
• Content versus configuration entity types
• Entity type plugins
• Fields
• Entity types recap
• TypedData
• Why TypedData?
• What is TypedData?
• The low-level API
• Content entities
• TypedData recap
• Interacting with the Entity API
• Querying entities
• Loading entities
• Reading entities
• Manipulating entities
• Creating entities
• Rendering content entities
• Pseudo-fields
• Entity validation
• Summary
• Chapter 7: Your Own Custom Entity and Plugin Types
• Our custom content entity type
• Entity updates
• Our custom plugin type
• Our custom configuration entity type
• The Importer plugin
• Content entity bundles
• Our own Drush command
• Summary
• Chapter 8: The Database API
• The Schema API
• Running queries
• Select queries
• Pagers
• Insert queries
• Update queries
• Delete queries
• Transactions
• Query alters
• Update hooks
• Post update hooks
• Summary
• Chapter 9: Custom Fields
• A recap of Field type plugins
• Field type
• Field widget
• Field formatter
• Field settings
• Using our custom field type as a base field
• Summary
• Chapter 10: Access Control
• Introduction to the Drupal access system
• Roles and permissions under the hood
• Defining permissions
• Checking the user credentials
• Route access
• Custom route access
• Programmatically checking access on routes
• Bonus – dynamic route options for access control
• CSRF protection on routes
• Altering routes
• Entity access
• Injecting services into Entity handlers
• Entity access hooks
• Field access
• Entity access in routes
• Node access grants
• Block access
• Summary
• Chapter 11: Caching
• Introduction to caching
• Cacheability metadata
• Cache tags
• Cache contexts
• Max-age
• Using the cache metadata
• Placeholders and lazy building
• Lazy builders
• Using the Cache API
• Creating our own cache bin
• Summary
• Chapter 12: JavaScript and the Ajax API
• JavaScript in Drupal
• Drupal behaviors
• Drupal settings
• The Ajax API
• Ajax links
• Ajax in forms
• The States (Form) system
• Summary
• Chapter 13: Internationalization and Languages
• Introduction to the multilingual ecosystem
• Language
• Content translation
• Configuration translation
• Interface translation
• Internationalization
• Content entities and the Translation API
• Summary
• Chapter 14: Batches, Queues, and Cron
• Batch-powered update hooks
• Batch operations
• Creating the batch
• Batch operations
• Cron
• Queues
• Introduction to the Queue API
• Cron-based queues
• Processing a queue programmatically
• The Lock API
• Summary
• Chapter 15: Views
• Entities in Views
• Exposing custom data to Views
• Views data
• Custom Views field
• Field configuration
• Custom Views filter
• Custom Views argument
• Views theming
• Views hooks
• Summary
• Chapter 16: Working with Files and Images
• The filesystem
• Stream wrappers
• Managed versus unmanaged files
• Using the File and Image fields
• Working with managed files
• Attaching managed files to entities
• Helpful functions for dealing with managed files
• Managed file uploads
• Our own stream wrapper
• Working with unmanaged files
• Private filesystem
• Images
• Image toolkits
• Image styles
• Rendering images
• Summary
• Chapter 17: Automated Testing
• Testing methodologies in Drupal 9
• PHPUnit
• Registering tests
• Unit tests
• Mocked dependencies
• Kernel tests
• TeamCleaner test
• CsvImporter test
• Functional tests
• Configuration for Functional tests
• Hello World page test
• Hello World form test
• Functional JavaScript tests
• Time test
• CsvImporter test
• Summary
• Chapter 18: Drupal Security
• Cross-Site Scripting (XSS)
• Sanitization methods in Drupal 9
• Double escaping
• SQL Injection
• Cross-Site Request Forgery (CSRF)
• Summary
• Other Books You May Enjoy
• Leave a review – let other readers know what you think