Issue #3197629 by JordiK, Odai Atieh: New API hooks to react on inline entity save/delete

inline_entity_form.api.php

@@ -58,3 +58,58 @@ function hook_inline_entity_form_table_fields_alter(array &$fields, array $conte
     ];
   }
 }
+
+/**
+ * React on a IEF widget entity being saved.
+ *
+ * @param \Drupal\Core\Form\FormStateInterface $form_state
+ *   The form state of the parent form.
+ * @param \Drupal\Core\Entity\ContentEntityInterface $entity
+ *   The entity being inserted or updated.
+ * @param bool $is_new
+ *   Shows if we create (true) or update an entity (false).
+ */
+function hook_inline_entity_form_entity_save(FormStateInterface &$form_state, ContentEntityInterface $entity, $is_new) {
+  $operation = ($is_new == TRUE) ? 'created' : 'updated';
+  $message = 'Entity ' . $entity->id() . ' was ' . $operation . ' in parent entity ' . $form_state->getFormObject()->getEntity()->id();
+  \Drupal::logger('mymodule')->notice($message);
+}
+
+/**
+ * React on a IEF widget entity being deleted.
+ *
+ * @param \Drupal\Core\Form\FormStateInterface $form_state
+ *   The form state of the parent form.
+ * @param \Drupal\Core\Entity\ContentEntityInterface $entity
+ *   The entity being deleted.
+ */
+function hook_inline_entity_form_entity_delete(FormStateInterface &$form_state, ContentEntityInterface $entity) {
+  $message = 'Entity ' . $entity->id() . ' was deleted in parent entity ' . $form_state->getformObject()->getEntity()->id();
+  \Drupal::logger('mymodule')->notice($message);
+}
+
+/**
+ * Alter the list of entity bundles, which can be created with IEF widgets.
+ *
+ * @param array $create_bundles
+ *   A list of entity bundles.
+ * @param array $context
+ *   An array with the following keys:
+ *   - parent_entity_type: The type of the parent entity.
+ *   - parent_bundle: The bundle of the parent entity.
+ *   - field_name: The name of the reference field on which IEF is operating.
+ *   - entity_type: The type of the referenced entities.
+ *   - allowed_bundles: Bundles allowed on the reference field.
+ *
+ * @see \Drupal\inline_entity_form\InlineFormInterface::getTableFields()
+ */
+function hook_inline_entity_form_create_bundles_alter(array &$create_bundles, array $context) {
+  // Remove a the possibility to create cost items.
+  if ($context['parent_entity_type'] == 'budget') {
+    if (($key = array_search('budget_cost_item', $create_bundles)) !== FALSE) {
+      unset($create_bundles[$key]);
+    }
+  }
+  // Add a revenue item to the list of bundles to create.
+  $create_bundles[] = 'budget_revenue_item';
+}

src/Plugin/Field/FieldWidget/InlineEntityFormComplex.php

@@ -538,6 +538,11 @@ class InlineEntityFormComplex extends InlineEntityFormBase implements ContainerF
     }
 
     $create_bundles = $this->getCreateBundles();
+
+    // Let modules modify the create_bundles array.
+    $context['widget'] = $this;
+    $this->moduleHandler->alter('inline_entity_form_create_bundles', $create_bundles, $context);
+
     $create_bundles_count = count($create_bundles);
     $allow_new = $settings['allow_new'] && !empty($create_bundles);
     $hide_cancel = FALSE;

src/WidgetSubmit.php

@@ -51,16 +51,19 @@ class WidgetSubmit {
         if (!empty($entity_item['entity']) && !empty($entity_item['needs_save'])) {
           /** @var \Drupal\Core\Entity\ContentEntityInterface $entity */
           $entity = $entity_item['entity'];
+          $is_new = $entity->isNew();
           $handler = InlineEntityForm::getInlineFormHandler($entity->getEntityTypeId());
           $referenceUpgrader->upgradeEntityReferences($entity);
           $handler->save($entity);
           $referenceUpgrader->registerEntity($entity);
           $entity_item['needs_save'] = FALSE;
+          \Drupal::moduleHandler()->invokeAll('inline_entity_form_entity_save', [&$form_state, $entity, $is_new]);
         }
       }
 
       /** @var \Drupal\Core\Entity\ContentEntityInterface $entities */
       foreach ($widget_state['delete'] as $entity) {
+        \Drupal::moduleHandler()->invokeAll('inline_entity_form_entity_delete', [&$form_state, $entity]);
         $entity->delete();
       }
       unset($widget_state['delete']);