3 namespace Drupal\field\Entity;
5 use Drupal\Core\Entity\EntityStorageInterface;
6 use Drupal\Core\Entity\FieldableEntityStorageInterface;
7 use Drupal\Core\Field\FieldConfigBase;
8 use Drupal\Core\Field\FieldException;
9 use Drupal\field\FieldStorageConfigInterface;
10 use Drupal\field\FieldConfigInterface;
13 * Defines the Field entity.
16 * id = "field_config",
17 * label = @Translation("Field"),
19 * "access" = "Drupal\field\FieldConfigAccessControlHandler",
20 * "storage" = "Drupal\field\FieldConfigStorage"
22 * config_prefix = "field",
37 * "default_value_callback",
43 class FieldConfig extends FieldConfigBase implements FieldConfigInterface {
46 * Flag indicating whether the field is deleted.
48 * The delete() method marks the field as "deleted" and removes the
49 * corresponding entry from the config storage, but keeps its definition in
50 * the state storage while field data is purged by a separate
51 * garbage-collection process.
53 * Deleted fields stay out of the regular entity lifecycle (notably, their
54 * values are not populated in loaded entities, and are not saved back).
58 protected $deleted = FALSE;
61 * The associated FieldStorageConfig entity.
63 * @var \Drupal\field\Entity\FieldStorageConfig
65 protected $fieldStorage;
68 * Constructs a FieldConfig object.
70 * In most cases, Field entities are created via
71 * FieldConfig::create($values), where $values is the same
72 * parameter as in this constructor.
74 * @param array $values
75 * An array of field properties, keyed by property name. The
76 * storage associated with the field can be specified either with:
77 * - field_storage: the FieldStorageConfigInterface object,
78 * or by referring to an existing field storage in the current configuration
80 * - field_name: The field name.
81 * - entity_type: The entity type.
82 * Additionally, a 'bundle' property is required to indicate the entity
83 * bundle to which the field is attached to. Other array elements will be
84 * used to set the corresponding properties on the class; see the class
85 * property documentation for details.
87 * @see entity_create()
89 public function __construct(array $values, $entity_type = 'field_config') {
90 // Allow either an injected FieldStorageConfig object, or a field_name and
92 if (isset($values['field_storage'])) {
93 if (!$values['field_storage'] instanceof FieldStorageConfigInterface) {
94 throw new FieldException('Attempt to create a configurable field for a non-configurable field storage.');
96 $field_storage = $values['field_storage'];
97 $values['field_name'] = $field_storage->getName();
98 $values['entity_type'] = $field_storage->getTargetEntityTypeId();
99 // The internal property is fieldStorage, not field_storage.
100 unset($values['field_storage']);
101 $values['fieldStorage'] = $field_storage;
104 if (empty($values['field_name'])) {
105 throw new FieldException('Attempt to create a field without a field_name.');
107 if (empty($values['entity_type'])) {
108 throw new FieldException("Attempt to create a field '{$values['field_name']}' without an entity_type.");
111 // 'bundle' is required in either case.
112 if (empty($values['bundle'])) {
113 throw new FieldException("Attempt to create a field '{$values['field_name']}' without a bundle.");
116 parent::__construct($values, $entity_type);
122 public function postCreate(EntityStorageInterface $storage) {
123 parent::postCreate($storage);
125 // Validate that we have a valid storage for this field. This throws an
126 // exception if the storage is invalid.
127 $this->getFieldStorageDefinition();
129 // 'Label' defaults to the field name (mostly useful for fields created in
131 if (empty($this->label)) {
132 $this->label = $this->getName();
137 * Overrides \Drupal\Core\Entity\Entity::preSave().
139 * @throws \Drupal\Core\Field\FieldException
140 * If the field definition is invalid.
141 * @throws \Drupal\Core\Entity\EntityStorageException
142 * In case of failures at the configuration storage level.
144 public function preSave(EntityStorageInterface $storage) {
145 $entity_manager = \Drupal::entityManager();
146 $field_type_manager = \Drupal::service('plugin.manager.field.field_type');
148 $storage_definition = $this->getFieldStorageDefinition();
150 // Filter out unknown settings and make sure all settings are present, so
151 // that a complete field definition is passed to the various hooks and
152 // written to config.
153 $default_settings = $field_type_manager->getDefaultFieldSettings($storage_definition->getType());
154 $this->settings = array_intersect_key($this->settings, $default_settings) + $default_settings;
156 if ($this->isNew()) {
157 // Notify the entity storage.
158 $entity_manager->onFieldDefinitionCreate($this);
161 // Some updates are always disallowed.
162 if ($this->entity_type != $this->original->entity_type) {
163 throw new FieldException("Cannot change an existing field's entity_type.");
165 if ($this->bundle != $this->original->bundle) {
166 throw new FieldException("Cannot change an existing field's bundle.");
168 if ($storage_definition->uuid() != $this->original->getFieldStorageDefinition()->uuid()) {
169 throw new FieldException("Cannot change an existing field's storage.");
171 // Notify the entity storage.
172 $entity_manager->onFieldDefinitionUpdate($this, $this->original);
175 parent::preSave($storage);
181 public function calculateDependencies() {
182 parent::calculateDependencies();
183 // Mark the field_storage_config as a dependency.
184 $this->addDependency('config', $this->getFieldStorageDefinition()->getConfigDependencyName());
191 public static function preDelete(EntityStorageInterface $storage, array $fields) {
192 $state = \Drupal::state();
193 $entity_type_manager = \Drupal::entityTypeManager();
195 parent::preDelete($storage, $fields);
196 // Keep the field definitions in the state storage so we can use them
197 // later during field_purge_batch().
198 $deleted_fields = $state->get('field.field.deleted') ?: [];
200 /** @var \Drupal\field\FieldConfigInterface $field */
201 foreach ($fields as $field) {
202 // Only mark a field for purging if there is data. Otherwise, just remove
204 $target_entity_storage = $entity_type_manager->getStorage($field->getTargetEntityTypeId());
205 if (!$field->deleted && $target_entity_storage instanceof FieldableEntityStorageInterface && $target_entity_storage->countFieldData($field->getFieldStorageDefinition(), TRUE)) {
206 $config = $field->toArray();
207 $config['deleted'] = TRUE;
208 $config['field_storage_uuid'] = $field->getFieldStorageDefinition()->uuid();
209 $deleted_fields[$field->uuid()] = $config;
212 $state->set('field.field.deleted', $deleted_fields);
218 public static function postDelete(EntityStorageInterface $storage, array $fields) {
219 // Clear the cache upfront, to refresh the results of getBundles().
220 \Drupal::entityManager()->clearCachedFieldDefinitions();
222 // Notify the entity storage.
223 foreach ($fields as $field) {
224 if (!$field->deleted) {
225 \Drupal::entityManager()->onFieldDefinitionDelete($field);
229 // If this is part of a configuration synchronization then the following
230 // configuration updates are not necessary.
231 $entity = reset($fields);
232 if ($entity->isSyncing()) {
236 // Delete the associated field storages if they are not used anymore and are
238 $storages_to_delete = [];
239 foreach ($fields as $field) {
240 $storage_definition = $field->getFieldStorageDefinition();
241 if (!$field->deleted && !$field->isUninstalling() && $storage_definition->isDeletable()) {
242 // Key by field UUID to avoid deleting the same storage twice.
243 $storages_to_delete[$storage_definition->uuid()] = $storage_definition;
246 if ($storages_to_delete) {
247 \Drupal::entityManager()->getStorage('field_storage_config')->delete($storages_to_delete);
254 protected function linkTemplates() {
255 $link_templates = parent::linkTemplates();
256 if (\Drupal::moduleHandler()->moduleExists('field_ui')) {
257 $link_templates["{$this->entity_type}-field-edit-form"] = 'entity.field_config.' . $this->entity_type . '_field_edit_form';
258 $link_templates["{$this->entity_type}-storage-edit-form"] = 'entity.field_config.' . $this->entity_type . '_storage_edit_form';
259 $link_templates["{$this->entity_type}-field-delete-form"] = 'entity.field_config.' . $this->entity_type . '_field_delete_form';
261 if (isset($link_templates['config-translation-overview'])) {
262 $link_templates["config-translation-overview.{$this->entity_type}"] = "entity.field_config.config_translation_overview.{$this->entity_type}";
265 return $link_templates;
271 protected function urlRouteParameters($rel) {
272 $parameters = parent::urlRouteParameters($rel);
273 $entity_type = \Drupal::entityManager()->getDefinition($this->entity_type);
274 $bundle_parameter_key = $entity_type->getBundleEntityType() ?: 'bundle';
275 $parameters[$bundle_parameter_key] = $this->bundle;
282 public function isDeleted() {
283 return $this->deleted;
289 public function getFieldStorageDefinition() {
290 if (!$this->fieldStorage) {
291 $fields = $this->entityManager()->getFieldStorageDefinitions($this->entity_type);
292 if (!isset($fields[$this->field_name])) {
293 throw new FieldException("Attempt to create a field {$this->field_name} that does not exist on entity type {$this->entity_type}.");
295 if (!$fields[$this->field_name] instanceof FieldStorageConfigInterface) {
296 throw new FieldException("Attempt to create a configurable field of non-configurable field storage {$this->field_name}.");
298 $this->fieldStorage = $fields[$this->field_name];
301 return $this->fieldStorage;
307 public function isDisplayConfigurable($context) {
314 public function getDisplayOptions($display_context) {
315 // Hide configurable fields by default.
316 return ['region' => 'hidden'];
322 public function isReadOnly() {
329 public function isComputed() {
334 * Loads a field config entity based on the entity type and field name.
336 * @param string $entity_type_id
337 * ID of the entity type.
338 * @param string $bundle
340 * @param string $field_name
344 * The field config entity if one exists for the provided field
345 * name, otherwise NULL.
347 public static function loadByName($entity_type_id, $bundle, $field_name) {
348 return \Drupal::entityManager()->getStorage('field_config')->load($entity_type_id . '.' . $bundle . '.' . $field_name);