1 | <?php |
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8 | class EntityReferenceHandler extends AbstractHandler { |
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9 | |||
10 | /** |
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11 | * {@inheritdoc} |
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12 | */ |
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13 | public function expand($values) { |
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14 | $return = []; |
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15 | $entity_type_id = $this->fieldInfo->getSetting('target_type'); |
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16 | $entity_definition = \Drupal::entityTypeManager()->getDefinition($entity_type_id); |
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17 | |||
18 | // Determine label field key. |
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19 | if ($entity_type_id !== 'user') { |
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20 | $label_key = $entity_definition->getKey('label'); |
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21 | } |
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22 | else { |
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23 | // Entity Definition->getKey('label') returns false for users. |
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24 | $label_key = 'name'; |
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25 | } |
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26 | |||
27 | if (!$label_key && $entity_type_id == 'user') { |
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28 | $label_key = 'name'; |
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29 | } |
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30 | |||
31 | // Determine target bundle restrictions. |
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32 | $target_bundle_key = NULL; |
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33 | if ($target_bundles = $this->getTargetBundles()) { |
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34 | $target_bundle_key = $entity_definition->getKey('bundle'); |
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35 | } |
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36 | |||
37 | foreach ((array) $values as $value) { |
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38 | $query = \Drupal::entityQuery($entity_type_id)->condition($label_key, $value); |
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39 | $query->accessCheck(FALSE); |
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40 | if ($target_bundles && $target_bundle_key) { |
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41 | $query->condition($target_bundle_key, $target_bundles, 'IN'); |
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42 | } |
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43 | if ($entities = $query->execute()) { |
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44 | $return[] = array_shift($entities); |
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45 | } |
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46 | else { |
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47 | throw new \Exception(sprintf("No entity '%s' of type '%s' exists.", $value, $entity_type_id)); |
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48 | } |
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49 | } |
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50 | return $return; |
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51 | } |
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52 | |||
53 | /** |
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54 | * Retrieves bundles for which the field is configured to reference. |
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55 | * |
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56 | * @return mixed |
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57 | * Array of bundle names, or NULL if not able to determine bundles. |
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58 | */ |
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59 | protected function getTargetBundles() { |
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65 | |||
66 | } |
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67 |