Main topic described: default configuration
In Drupal 7 default configuration for modules such as content types, field configuration, views, etc. required custom PHP code to install and keep updated. In Drupal 8, these are stored with the configuration system in plain text YAML files.
For example the configuration management system takes care of creating and managing content types. You can ship a content type with your module by creating a properly named and structured configuration file.
Create a file named
node.type.example_mytype.yml and place it in your module's directory in a subdirectory called
config/install. For example this file could be at
/modules/example/config/install/node.type.example_mytype.yml if the module is in
Please respect the naming-convention that you prefix your content type with your module name followed by an underscore to prevent conflicts with other configuration files.
Then you can place the following code in this file:
description: 'Use <em>example</em> content to get to Drupal 8 development better.'
See node.type.article.yml for a live example.
You can include default configuration for other things like block placement, views, text formats, editor configuration, user roles, etc. with your module the same way.
You can set default values for form fields like the node author as well.
If you installed the module before adding this content type, you'll need to uninstall and install it again for the configuration to take effect.
You can generate these files by exporting the configuration in Configuration > Development > Configuration Management. You can opt to use the "Single import/export" functionality to export a single piece of configuration, in which case you are presented with a text area containing the code to copy/paste into the configuration file. Or you can do a "Full export" which will let you download a tar.gz file that contains all configuration files in a single folder.
When using exported configuration it is important to remove the UUID from the configuration. Every piece of configuration is uniquely identified by this ID. If you would include this UUID in your module the ID would be the same for all sites that use your module, so it would not be unique any more. If you simply remove this line from the configuration Drupal will generate new UUIDs when your module is enabled, guaranteeing uniqueness.
uuid: 626187e6-2176-4a73-8900-c0912580e4a1< < Remove this! langcode: en status: true