Drupal 8 Module Development - Second Edition

Configuration storage

Configuration is essentially stored in two places:

• The active storage (by default in the database)
• The sync storage (by default the YAML files)

Here is an example of a simple configuration YAML file:

my_string: 'Hello!'  my_int: 10  my_boolean: true  my_array:    my_deep_string: 'Yes, hello!'

The name of this file is given by the ID you need to use with the configuration API to read this data.

In addition to the actual data, you can have a dependencies key under which you can list what this configuration item depends on:

dependencies:  module:    - views  theme:    - bootstrap  config:    - system.site

There are three types of dependencies: modules, themes, and other configuration items.

If you remember in Chapter 2, Creating Your First ...