Drupal at your fingertips

by Selwyn Polit

Modern Drupal developer's quick code reference for versions 9 and 10

Drupal Book

Actions

Use the Drupal core Actions module to control Drupal

Batch and Queue

The Batch API and Queue subsystem let you take on large tasks

Blocks

Generate the code to create blocks, dependency injection, blocks with config forms, block permissions

Caching

Cache tags, disabling caching, caching REST resources, development setup, various caching tips

Composer

Using Composer to manage dependencies and patches

Config

Creating, loading, overriding, drush config commands

Cron

Using hook_cron, sample crontab files, how to stop cron

Dates and Times

Getting and setting date fields, date arithmetic, expiration, node creation and changed dates, Smart date module

Debugging

Debugging with PhpStorm, DDEV and Xdebug

Development

Local setup, creating sites, DDEV, troubleshooting, PHPStorm setup, Xdebug setup, Twig debugging

Drush

The amazing essential command line tool that makes everyone\'s life so much better

Email

Sending emails in Drupal

Entities

More entities - the primary building blocks of Drupal

Forms

Creating and modifying forms using the Form API, AJAX forms, modals

General

Useful things that seemed to not fit well elsewhere

Getting off the Island

Reaching out of Drupal using Guzzle, downloading files

Hooks

Hooking into the Drupal hook system to modify all sorts of things on the fly

Javascript

Using Javascript in Drupal

Learning

Learning and keeping up with the latest on Drupal including podcasts, books and blogs

Links

Links, Aliases and URLs

Logging

Logging and notification

Menus

Grappling with the Drupal menu system

Migration

Automated ways to get data into Drupal

Modal dialogs

Popping up useful messages and forms to improve the user experience

Modules

A collection of useful and essential modules

Nodes and Fields

Loading and saving nodes and different types of fields, multivalue field magic, link fields, entity reference fields, url fields, storing JSON data into text fields, paragraphs, great cheat sheets

Queries

EntityQueries, SQL queries, inserting and deleting content

Redirects

Redirecting to web pages on and off-site, from controllers, forms and more.

Render Arrays

The building blocks of Drupal's rendering system

Routes and Controllers

Navigating around Drupal

Security

Protecting your site from malware and malicious threat actors

Services and Dependency injection

The new modern way to write code, creating services and using D.I. in controllers, drush commands

Mac Setup

Setup your mac for Drupal development

PHP

Tips and tricks using PHP

State

State API, Tempstore and UserData (Interesting flavors of storage)

Taxonomy

Getting around in Drupal's Taxonomy system

Tests

Creating automated tests with PHPUnit and Drupal Test Traits

Twig

Formatting and controlling your output

Update

Upgrading and patching Drupal and contrib modules