Chapter 6: Hooks and Events
CourseChapter 7: Plugins
CourseChapter 8: Forms
CourseChapter 9: Working with Data
CourseChapter 10: Caching
CourseChapter 11: Testing
CourseChapter 14: Final Thoughts
CourseIn Drupal's Appearance UI, all themes get a theme settings form. As a theme developer, you can customize the theme settings form, enabling site administrators to have more control over the appearance of the theme.
In this tutorial, we'll show you how to add admin-configurable settings to your theme. In the process of doing this, we'll use a variety of theme and module development skills and assume you have some familiarity with using Drupal's Form API, Configuration API, and theme system (see Prerequisites).
By the end of this tutorial, you will be able to provide custom theme settings that an administrator can use to modify the appearance of the theme.
Any text that will be displayed to user as part of your application's user interface should be passed through the t()
function, or an equivalent, so that it can be translated into other languages as needed. This tutorial will look at how to use the t()
function.
This tutorial contains information that applies to anyone writing modules or themes. And many of the tutorials you read on this site and on the web in general will expect that you understand how basic string translation works.
In this tutorial we'll look at:
- Passing strings through the
t()
function or equivalent so they are available for translation - Using placeholders for dynamic content in translatable strings
- Tips for making your code's interface strings easier to translate
Before you can create a path or link to another page on your site, you'll need to know the route (unless there is already a variable available for the URL you need). Finding a route can be a tricky task unless you have the right tools. In this tutorial, we'll show how tools like Webprofiler, Drush, and Grep can be used to get route information for a page, so that you can use functions that need a route as a function parameter.
In this tutorial we'll:
- Learn how to determine the route or path of an internal page.
Media source plugins provide the link between media entities in Drupal and the actual media asset itself. They are the code that understand the difference between an image, a video, and a Tweet, and perform the translation that allows the media ecosystem to treat all media entities equally. For example, local image files, and remote YouTube videos, can both be catalogued in a similar way as media entities, but they need very different handling when it comes to displaying them.
Media sources are represented as plugins, there are a handful in Drupal core, and a developer can add new plugins to represent any type of media your application needs to catalogue.
In this tutorial we'll learn:
- How media source plugins relate to Media Types
- The responsibilities of a media source plugin
By the end of this tutorial you should be able to define the role of a media source plugin and understand what's required to define your own.
It's not uncommon to patch, or customize, contributed modules during the lifetime of a site. It's important to know if you've done so when planning for a migration since you'll want to be sure that you don't lose any customizations when you start using an updated version of a module.
In this tutorial we will walk through using the Hacked! module to check for any alterations to your Drupal code base.
The Drupal-to-Drupal migration system is still a work in progress. As such, there are a few things that simply don't work, and a few others that still have kinks to be ironed out. In this tutorial, we'll look at some of the common hang-ups that we've encountered, the status of resolving those issues, and what your options are in the meantime.
In Drupal, there are 3 modules in core related to migration that you'll want to know about. These modules can help you import data into Drupal from disparate sources, or upgrade from a previous version of Drupal.
In this tutorial we'll look at what each of these core migration modules do, and talk about when you'll need to use them.
Drupal core provides support for migrating data from Drupal 6 or 7. The templates provided in core migrate your data in a very specific way. They attempt to copy things verbatim whenever possible. However, you may wish to alter this for your migrations. In this tutorial we are going to explore the various ways that you can alter the existing Drupal-to-Drupal migrations to meet your needs.