Creating a custom service
Now that we have a module, we are going to use the drush generator to create a skeleton of our service. As before, we simply tell drush we want the custom service template to be used and it will prompt us for the following information:
| Value | Prompt: Description |
|---|---|
| lstrptut_s4rnhy | Module machine name: The machine name of the module to add the service to. |
| lstrptut_s4rnhy.genomeassemblies | Service name: The machine name of the new service. |
| GenomeAssemblies | Class: The name of the class for this service (Drupal standards are to use snake-case for class names). |
Next it asks you “Would you like to inject dependencies?” and we would, so we leave the default “Yes”. We want to add the following dependencies:
- tripal_chado.database
- tripal.logger
Note: You can find the name of all services available in your site using
drush devel:services.
Okay, now that we know all the information we need to provide, let’s run the generator and see what it creates!
docker exec -it LStutorial drush generate service:custom
Welcome to custom-service generator!
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Module machine name [web]:
➤ lstrptut_s4rnhy
Service name [lstrptut_s4rnhy.example]:
➤ lstrptut_s4rnhy.genomeassemblies
Class [Genomeassemblies]:
➤ GenomeAssemblies
Would you like to inject dependencies? [Yes]:
➤ Yes
Type the service name or use arrows up/down. Press enter to continue:
➤ tripal_chado.database
Type the service name or use arrows up/down. Press enter to continue:
➤ tripal.logger
Type the service name or use arrows up/down. Press enter to continue:
➤
The following directories and files have been created or updated:
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• /var/www/drupal9/web/modules/lstrptut_s4rnhy/lstrptut_s4rnhy.services.yml
• /var/www/drupal9/web/modules/lstrptut_s4rnhy/src/GenomeAssemblies.php