Issue #2112759 by effulgentsia: Add ContentEntityInterface::hasField().

core/lib/Drupal/Core/Entity/ContentEntityBase.php

@@ -363,6 +363,13 @@ public function uuid() {
     return $this->get('uuid')->value;
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function hasField($field_name) {
+    return (bool) $this->getPropertyDefinition($field_name);
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -817,7 +824,7 @@ public function __set($name, $value) {
     if (isset($this->fields[$name][$this->activeLangcode])) {
       $this->fields[$name][$this->activeLangcode]->setValue($value);
     }
-    elseif ($this->getPropertyDefinition($name)) {
+    elseif ($this->hasField($name)) {
       $this->getTranslatedField($name, $this->activeLangcode)->setValue($value);
     }
     // The translations array is unset when cloning the entity object, we just
@@ -836,7 +843,7 @@ public function __set($name, $value) {
    * Implements the magic method for isset().
    */
   public function __isset($name) {
-    if ($this->getPropertyDefinition($name)) {
+    if ($this->hasField($name)) {
       return $this->get($name)->getValue() !== NULL;
     }
     else {
@@ -848,7 +855,7 @@ public function __isset($name) {
    * Implements the magic method for unset.
    */
   public function __unset($name) {
-    if ($this->getPropertyDefinition($name)) {
+    if ($this->hasField($name)) {
       $this->get($name)->setValue(NULL);
     }
     else {

core/lib/Drupal/Core/Entity/ContentEntityInterface.php

@@ -55,4 +55,15 @@ public function initTranslation($langcode);
    */
   public static function baseFieldDefinitions($entity_type);
 
+  /**
+   * Returns whether the entity has a field with the given name.
+   *
+   * @param string $field_name
+   *   The field name.
+   *
+   * @return bool
+   *   TRUE if the entity has a field with the given name. FALSE otherwise.
+   */
+  public function hasField($field_name);
+
 }

core/lib/Drupal/Core/Entity/EntityRenderController.php

@@ -70,7 +70,7 @@ public function buildContent(array $entities, array $displays, $view_mode, $lang
       // avoid the cost of calling $entity->getProperties() by iterating the
       // intersection as follows.
       foreach ($displays[$entity->bundle()]->getComponents() as $name => $options) {
-        if ($entity->getPropertyDefinition($name)) {
+        if ($entity->hasField($name)) {
           foreach ($entity->get($name) as $item) {
             $item->_attributes = array();
           }

core/modules/comment/comment.module

@@ -478,7 +478,7 @@ function comment_entity_view(EntityInterface $entity, EntityDisplay $display, $v
   $fields = \Drupal::service('comment.manager')->getFields('node');
   foreach ($fields as $field_name => $detail) {
     // Skip fields that entity does not have.
-    if (!$entity->getPropertyDefinition($field_name)) {
+    if (!$entity->hasField($field_name)) {
       continue;
     }
     $links = array();
@@ -1022,12 +1022,12 @@ function comment_entity_insert(EntityInterface $entity) {
     ));
     foreach ($fields as $field_name => $detail) {
       // Skip fields that entity does not have.
-      if (!$entity->getPropertyDefinition($field_name)) {
+      if (!$entity->hasField($field_name)) {
         continue;
       }
       // There is at least one comment field, the query needs to be executed.
       // @todo Use $entity->getAuthorId() after https://drupal.org/node/2078387
-      if ($entity->getPropertyDefinition('uid')) {
+      if ($entity->hasField('uid')) {
         $last_comment_uid = $entity->get('uid')->value;
       }
       else {
@@ -1105,7 +1105,7 @@ function comment_node_update_index(EntityInterface $node, $langcode) {
   if ($index_comments) {
     foreach (\Drupal::service('comment.manager')->getFields('node') as $field_name => $info) {
       // Skip fields that entity does not have.
-      if (!$node->getPropertyDefinition($field_name)) {
+      if (!$node->hasField($field_name)) {
         continue;
       }
       $instance = \Drupal::service('field.info')->getInstance('node', $node->getType(), $field_name);
@@ -1142,7 +1142,7 @@ function comment_node_search_result(EntityInterface $node) {
   $open = FALSE;
   foreach ($comment_fields as $field_name => $info) {
     // Skip fields that entity does not have.
-    if (!$node->getPropertyDefinition($field_name)) {
+    if (!$node->hasField($field_name)) {
       continue;
     }
     // Do not make a string if comments are hidden.
@@ -1570,7 +1570,7 @@ function template_preprocess_comment(&$variables) {
   }
   else {
     // @todo Use $entity->getAuthorId() after https://drupal.org/node/2078387
-    if ($commented_entity->getPropertyDefinition('uid') && $comment->uid->target_id == $commented_entity->get('uid')->value) {
+    if ($commented_entity->hasField('uid') && $comment->uid->target_id == $commented_entity->get('uid')->value) {
       $variables['attributes']['class'][] = 'by-' . $commented_entity->entityType() . '-author';
     }
   }

core/modules/comment/lib/Drupal/comment/CommentStorageController.php

@@ -108,7 +108,7 @@ public function updateEntityStatistics(CommentInterface $comment) {
           // @todo Use $entity->getAuthorId() after https://drupal.org/node/2078387
           // Get the user ID from the entity if it's set, or default to the
           // currently logged in user.
-          'last_comment_uid' => $entity->getPropertyDefinition('uid') ? $entity->get('uid')->value : \Drupal::currentUser()->id(),
+          'last_comment_uid' => $entity->hasField('uid') ? $entity->get('uid')->value : \Drupal::currentUser()->id(),
         ))
         ->condition('entity_id', $comment->entity_id->value)
         ->condition('entity_type', $comment->entity_type->value)

core/modules/path/path.module

@@ -232,7 +232,7 @@ function path_entity_field_info($entity_type) {
  * @todo: Move this to methods on the FieldItem class.
  */
 function path_entity_insert(EntityInterface $entity) {
-  if ($entity instanceof ContentEntityInterface && $entity->getPropertyDefinition('path')) {
+  if ($entity instanceof ContentEntityInterface && $entity->hasField('path')) {
     $entity->path->alias = trim($entity->path->alias);
     // Only save a non-empty alias.
     if (!empty($entity->path->alias)) {
@@ -248,7 +248,7 @@ function path_entity_insert(EntityInterface $entity) {
  * Implements hook_entity_update().
  */
 function path_entity_update(EntityInterface $entity) {
-  if ($entity instanceof ContentEntityInterface && $entity->getPropertyDefinition('path')) {
+  if ($entity instanceof ContentEntityInterface && $entity->hasField('path')) {
     $entity->path->alias = trim($entity->path->alias);
     // Delete old alias if user erased it.
     if ($entity->path->pid && !$entity->path->alias) {
@@ -269,7 +269,7 @@ function path_entity_update(EntityInterface $entity) {
  * Implements hook_entity_predelete().
  */
 function path_entity_predelete(EntityInterface $entity) {
-  if ($entity instanceof ContentEntityInterface && $entity->getPropertyDefinition('path')) {
+  if ($entity instanceof ContentEntityInterface && $entity->hasField('path')) {
     // Delete all aliases associated with this term.
     $uri = $entity->uri();
     \Drupal::service('path.crud')->delete(array('source' => $uri['path']));

core/modules/system/tests/modules/entity_test/entity_test.module

@@ -554,7 +554,7 @@ function entity_test_entity_prepare_view($entity_type, array $entities, array $d
   // Add a dummy field item attribute on field_test_text if it exists.
   if ($entity_type == 'entity_test_render') {
     foreach ($entities as $entity) {
-      if ($entity->getPropertyDefinition('field_test_text')) {
+      if ($entity->hasField('field_test_text')) {
         foreach ($entity->get('field_test_text') as $item) {
           $item->_attributes += array('data-field-item-attr' => 'foobar');
         }

core/modules/user/user.module

@@ -537,7 +537,7 @@ function user_validate_current_pass(&$form, &$form_state) {
     // This validation only works for required textfields (like mail) or
     // form values like password_confirm that have their own validation
     // that prevent them from being empty if they are changed.
-    $current_value = $account->getPropertyDefinition($key) ? $account->get($key)->value : $account->$key;
+    $current_value = $account->hasField($key) ? $account->get($key)->value : $account->$key;
     if ((strlen(trim($form_state['values'][$key])) > 0) && ($form_state['values'][$key] != $current_value)) {
       $current_pass_failed = empty($form_state['values']['current_pass']) || !\Drupal::service('password')->check($form_state['values']['current_pass'], $account);
       if ($current_pass_failed) {