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On a paragraph type, I have a field I want to migrate to a new field of type "list_string". To do that in the deployment and like our automatic deployment begin by an update of the database follow by importation of configurations, I want to create the new field programmatically before to do the migration in another hook_update.

I'm using the example of this article https://www.metaltoad.com/blog/programmatically-importing-drupal-8-field-configurations which is perfect except I have a problem because my new field is of type list_string. My configuration for field.storage is:

langcode: fr status: true dependencies: module: - options - paragraphs id: paragraph.field_types_link field_name: field_types_link entity_type: paragraph type: list_string settings: allowed_values: - value: anchor label: Ancre - value: internal label: Interne - value: external label: Externe allowed_values_function: '' module: options locked: false cardinality: 1 translatable: true indexes: { } persist_with_no_fields: false custom_storage: false

When I create my new field based on my configuration file like that:

$field_storage_link = \Drupal::service('config.storage.sync')->read('field.storage.paragraph.field_types_link'); \Drupal::entityTypeManager()->getStorage('field_storage_config') ->create($field_storage_link) ->save();

I have this error.

[error] The configuration property settings.allowed_values.0.label.0 doesn't exist.

If I remove the list of allowed_values, it works and I can add my field to paragraphes bundles but in this case, I'm not able to do my migration properly because the allowed_values of my field are empty and I don't know how to update it programmatically. Someone can explain what's is the problem in my code and how to fix it?

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2 Answers 2

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I finish by find what was the problem. When I read the config file, my allowed value are of format:

[ [ 'value' => 'anchor', 'label' => 'Anchor' ], [ 'value' => 'internal', 'label' => 'Internal' ], [ 'value' => 'external', 'label' => 'External' ] ]

But the FieldStorageConfig wait a format:

[ 'anchor' => 'Anchor', 'internal' => 'Internal', 'external' => 'External' ]

So I add a transformation before to save my new field:

$field_storage_link = \Drupal::service('config.storage.sync')->read('field.storage.paragraph.field_types_link'); $allowed_values_link = []; foreach($field_storage_link['settings']['allowed_values'] as $value) { $allowed_values_link[$value['value']] = $value['label']; } $field_storage_link['settings']['allowed_values'] = $allowed_values_link; \Drupal::entityTypeManager()->getStorage('field_storage_config') ->create($field_storage_link) ->save(); $field_type_link = \Drupal::service('config.storage.sync')->read('field.field.paragraph.link_tdm.field_types_link'); \Drupal::entityTypeManager()->getStorage('field_config')->create($field_type_link)->save();

It works properly.

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1

For others with the same issue, see this important comment by Berdir at https://www.drupal.org/project/drupal/issues/2944144#comment-12481021 saying:

That's not the correct way to create a config entity from config. Here's a snippet based on what I did just today:

 $module_handler = \Drupal::moduleHandler(); $config_storage = new FileStorage($module_handler->getModule('yourmodule')->getPath() . '/config/install'); foreach (['field.storage.user.field_name', 'field.field.user.user.field_name'] as $config_name) { $config_record = $config_storage->read($config_name); $entity_type = \Drupal::service('config.manager')->getEntityTypeIdByName($config_name); /** @var \Drupal\Core\Config\Entity\ConfigEntityStorageInterface $storage */ $storage = \Drupal::entityTypeManager()->getStorage($entity_type); $entity = $storage->createFromStorageRecord($config_record); $entity->save(); }

The important part is "$entity = $storage->createFromStorageRecord($config_record);", the config structure and config entity structure doesn't always match 1:1.

I can confirm this solved the problem for me with the same error.

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