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Develop Forms in Drupal

Guide

Theming, Module Development

Drupal 8, 9, 10, and 11

Creating Forms in Drupal

Course

Module Development

Drupal 8, 9, 10, and 11

10 tutorials

Form API Overview Free

Form API Life Cycle

Define a New Form Controller and Route

Add Input Elements to a Form

Inject Services into a Form Controller

Provide Default Values for Form Elements

Form Element Reference Free

Alter an Existing Form with hook_form_alter()

Retrieve and Display Forms

Theming Drupal Forms with Twig

Validating Forms in Drupal

Course

Module Development

Drupal 8, 9, 10, and 11

4 tutorials

Validate Form Input

Validate a Form via the Form Controller

Add a Validation Callback to an Existing Form

Validate a Single Form Element

Processing Forms in Drupal

Course

Module Development

Drupal 8, 9, 10, and 11

3 tutorials

Handle Submitted Form Data

Process Submitted Form Data with a Callback

Process Submitted Form Data via the Form Controller

Ajax in Drupal Forms

Course

Module Development

Drupal 8, 9, 10, and 11

3 tutorials

Use Ajax with Forms

Create a Dependent Dropdown with Ajax

Use Ajax to Submit a Form

Settings Forms in Drupal

Course

Theming, Module Development

Drupal 8, 9, 10, and 11

2 tutorials

Create a Settings Form in a Module

Customize Theme Settings

Views in Drupal

Guide

Site Building, Module Development

Drupal 8, 9, 10, and 11

Views API in Drupal

Course

Module Development

Drupal 8, 9, 10, and 11

16 tutorials

Overview: Views API in Drupal Free

Overview: Build and Render Cycles in Views

Alter a View before It's Rendered

Alter a View after the Render Process

Alter the Query Used for a View

Expose a Custom Database Table to Views

Add Relationships Between 2 Tables in Views

Expose Custom Entities to Views

Overview: Views Plugins Free

Define a Views Field Handler Plugin

Define a Custom Views Pseudo Field Plugin

Define a Custom Views Filter Plugin

Define a Custom Views Sort Plugin

Define a Custom Views Area Handler Plugin

Define a Custom Views Access Plugin

Define a Custom Views Style Plugin

Layout Builder

Guide

Site Building, Theming, Module Development

Drupal 8, 9, 10, and 11

Layout Builder API in Drupal

Course

Site Building, Theming, Module Development

Drupal 8, 9, 10, and 11

3 tutorials

Dynamic Layout Plugins in Drupal's Layout Builder

How to Create a Layout with Configurable Settings in Drupal's Layout Builder

Build Dynamic Custom Layouts with Derivatives

Media and Responsive Images

Guide

Site Building, Theming, Module Development, Site Administration

Drupal 8, 9, 10, and 11

Managing Media in Drupal

Course

Site Building, Theming, Module Development, Site Administration

Drupal 8, 9, 10, and 11

12 tutorials

Overview: Media Management in Drupal Free

Overview: Media Types, Media Entities, and Media Fields in Drupal Free

Add a Media Field to a Content Type in Drupal

Find, Add, Edit, and Delete Media Entities in Drupal

Use Drupal Media Library to Browse Media Entities

How to Add a Media Button to a WYSIWYG Editor in Drupal

How to Add Fields to a Media Type in Drupal

Map Media Source Data to Custom Fields

Overview: Access Control for Media Entities in Drupal

Customize the Drupal Media Library Browser Widget

Track Media Entity Usage in Drupal

Use View Modes with Media Entities in Drupal

Media API in Drupal

Course

Module Development

Drupal 8, 9, 10, and 11

4 tutorials

What Are Media Sources in Drupal?

Create a New Media Type in Drupal

Use Any oEmbed Provider as a Media Source

Create a Custom Media Source Plugin

Drupal Site Administration

Guide

Site Building, Theming, Module Development, Backend and Infrastructure, Site Administration

Drupal 8, 9, 10, and 11

Keep Calm and Clear Cache

Course

Theming, Module Development, Site Administration

Drupal 8, 9, 10, and 11

1 tutorials

Clear Drupal's Cache Free

Migrating to Drupal

Course

Module Development

Drupal 8, 9, 10, and 11

5 tutorials

Introduction to Migrations with Drupal Free

Migrate System: Terms and Concepts Free

Migrate to Drupal: Documentation and Examples

Core Migration Modules

Migration-Related Contributed Modules

Drupal-to-Drupal Migrations (Drupal 7 Upgrade)

Course

Module Development

Drupal 8, 9, 10, and 11

15 tutorials

Prepare for a Drupal-to-Drupal Migration

Upgrade to a New Version of Drupal with a Drupal-to-Drupal Migration

Drupal-to-Drupal Migration Planning: Code Inventory

Use Upgrade Status and Contrib Tracker

Check for Alterations with Hacked

Drupal-to-Drupal Migration Planning: Content Inventory

Common Issues with Migrations

Drupal-to-Drupal Migration with the UI

Drupal-to-Drupal Migration with Drush

Custom Drupal-to-Drupal Migrations

Why Use Migrate Upgrade and Migrate Plus?

Create Migrations from Core Templates

Export Migration Configuration Entities into a Module

Customize an Existing Source Plugin

Use hook_migrate_prepare_row()

Extend the Migrate API

Course

Module Development

Drupal 8, 9, 10, and 11

10 tutorials

Set up Migrate Demo Site and Source Data

Source Plugins

Write a Custom Source Plugin

Process Plugins

Write a Custom Process Plugin

Destination Plugins

Write a Custom Migration

Run Custom Migrations

Use Highwater Marks to Limit What Gets Imported

Track Changes to Source Data During a Migration

Symfony for Drupal Developers

Guide

Module Development, Backend and Infrastructure

Drupal 8, 9, 10, and 11

Utility Functions and Classes

Topic

Module Development

Drupal 8, 9, 10, and 11

More information

In Drupal’s core library there are a number of utility functions and classes that, as a module developer, you will find make your task easier or less tedious.