public FieldUninstallValidator::validate($module)
Determines the reasons a module can not be uninstalled.
Example implementation:
public function validate($module) { $entity_types = $this->entityManager->getDefinitions(); $reasons = array(); foreach ($entity_types as $entity_type) { if ($module == $entity_type->getProvider() && $entity_type instanceof ContentEntityTypeInterface && $this->entityManager->getStorage($entity_type->id())->hasData()) { $reasons[] = $this->t('There is content for the entity type: @entity_type', array('@entity_type' => $entity_type->getLabel())); } } return $reasons; }
Parameters
string $module: A module name.
Return value
string[] An array of reasons the module can not be uninstalled, empty if it can. Each reason should not end with any punctuation since multiple reasons can be displayed together.
Overrides ModuleUninstallValidatorInterface::validate
See also
template_preprocess_system_modules_uninstall()
File
- core/modules/field/src/FieldUninstallValidator.php, line 51
Class
- FieldUninstallValidator
- Prevents uninstallation of modules providing active field storage.
Namespace
Drupal\field
Code
public function validate($module) { $reasons = []; if ($field_storages = $this->getFieldStoragesByModule($module)) { // Provide an explanation message (only mention pending deletions if there // remain no actual, non-deleted fields.) $fields_in_use = []; foreach ($field_storages as $field_storage) { if (!$field_storage->isDeleted()) { $fields_in_use[$field_storage->getType()][] = $field_storage->getLabel(); } } if (!empty($fields_in_use)) { foreach ($fields_in_use as $field_type => $field_storages) { $field_type_label = $this->getFieldTypeLabel($field_type); $reasons[] = $this->formatPlural(count($fields_in_use[$field_type]), 'The %field_type_label field type is used in the following field: @fields', 'The %field_type_label field type is used in the following fields: @fields', ['%field_type_label' => $field_type_label, '@fields' => implode(', ', $field_storages)]); } } else { $reasons[] = $this->t('Fields pending deletion'); } } return $reasons; }
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