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<?php |
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namespace Backpack\CRUD\app\Library\CrudPanel\Traits; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Database\Eloquent\Relations\HasMany; |
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use Illuminate\Database\Eloquent\Relations\HasOne; |
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use Illuminate\Database\Eloquent\Relations\MorphMany; |
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use Illuminate\Database\Eloquent\Relations\MorphOne; |
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use Illuminate\Support\Arr; |
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trait Create |
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{ |
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/* |
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|-------------------------------------------------------------------------- |
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| CREATE |
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|-------------------------------------------------------------------------- |
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*/ |
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/** |
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* Insert a row in the database. |
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* |
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* @param array $data All input values to be inserted. |
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* |
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* @return \Illuminate\Database\Eloquent\Model |
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*/ |
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public function create($data) |
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{ |
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$data = $this->decodeJsonCastedAttributes($data); |
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$data = $this->compactFakeFields($data); |
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// omit the n-n relationships when updating the eloquent item |
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$relationships = Arr::pluck($this->getRelationFields(), 'name'); |
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// init and fill model |
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$item = $this->model->make(Arr::except($data, $relationships)); |
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// handle BelongsTo 1:1 relations |
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$item = $this->associateOrDissociateBelongsToRelations($item, $data); |
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$item->save(); |
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// if there are any other relations create them. |
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$this->createRelations($item, $data); |
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return $item; |
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} |
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/** |
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* Get all fields needed for the ADD NEW ENTRY form. |
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* |
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* @return array The fields with attributes and fake attributes. |
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*/ |
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public function getCreateFields() |
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{ |
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return $this->fields(); |
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} |
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/** |
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* Get all fields with relation set (model key set on field). |
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* |
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* @return array The fields with model key set. |
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*/ |
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public function getRelationFields() |
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{ |
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$fields = $this->fields(); |
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$relationFields = []; |
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foreach ($fields as $field) { |
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if (isset($field['model']) && $field['model'] !== false) { |
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array_push($relationFields, $field); |
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} |
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if (isset($field['subfields']) && |
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is_array($field['subfields']) && |
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count($field['subfields'])) { |
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foreach ($field['subfields'] as $subfield) { |
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array_push($relationFields, $subfield); |
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} |
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} |
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} |
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return $relationFields; |
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} |
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/** |
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* Get all fields with n-n relation set (pivot table is true). |
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* |
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* @return array The fields with n-n relationships. |
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*/ |
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public function getRelationFieldsWithPivot() |
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{ |
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$all_relation_fields = $this->getRelationFields(); |
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return Arr::where($all_relation_fields, function ($value, $key) { |
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return isset($value['pivot']) && $value['pivot']; |
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}); |
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} |
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/** |
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* Create the relations for the current model. |
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* |
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* @param \Illuminate\Database\Eloquent\Model $item The current CRUD model. |
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* @param array $data The form data. |
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*/ |
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public function createRelations($item, $data) |
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{ |
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$relationData = $this->getRelationDataFromFormData($data); |
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// handles 1-1 and 1-n relations (HasOne, MorphOne, HasMany, MorphMany) |
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$this->createRelationsForItem($item, $relationData); |
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// this specifically handles M-M relations that could sync additional information into pivot table |
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$this->syncPivot($item, $data); |
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} |
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/** |
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* Sync the declared many-to-many associations through the pivot field. |
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* |
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* @param \Illuminate\Database\Eloquent\Model $model The current CRUD model. |
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* @param array $data The form data. |
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*/ |
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public function syncPivot($model, $data) |
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{ |
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$fields_with_relationships = $this->getRelationFieldsWithPivot(); |
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foreach ($fields_with_relationships as $field) { |
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$values = isset($data[$field['name']]) ? $data[$field['name']] : []; |
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// if a JSON was passed instead of an array, turn it into an array |
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if (is_string($values)) { |
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$decoded_values = json_decode($values, true); |
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$values = []; |
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// array is not multidimensional |
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if (count($decoded_values) != count($decoded_values, COUNT_RECURSIVE)) { |
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foreach ($decoded_values as $value) { |
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$values[] = $value[$field['name']]; |
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} |
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} else { |
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$values = $decoded_values; |
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} |
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} |
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$relation_data = []; |
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foreach ($values as $pivot_id) { |
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if ($pivot_id != '') { |
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$pivot_data = []; |
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if (isset($field['pivotFields'])) { |
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// array is not multidimensional |
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if (count($field['pivotFields']) == count($field['pivotFields'], COUNT_RECURSIVE)) { |
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foreach ($field['pivotFields'] as $pivot_field_name) { |
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$pivot_data[$pivot_field_name] = $data[$pivot_field_name][$pivot_id]; |
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} |
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} else { |
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$field_data = json_decode($data[$field['name']], true); |
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// we grab from the parsed data the specific values for this pivot |
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$pivot_data = Arr::first($field_data, function ($item) use ($pivot_id, $field) { |
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return $item[$field['name']] === $pivot_id; |
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}); |
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// we remove the relation field from extra pivot data as we already have the relation. |
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unset($pivot_data[$field['name']]); |
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} |
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} |
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$relation_data[$pivot_id] = $pivot_data; |
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} |
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$model->{$field['name']}()->sync($relation_data); |
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if (isset($field['morph']) && $field['morph'] && isset($data[$field['name']])) { |
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$values = $data[$field['name']]; |
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$model->{$field['name']}()->sync($values); |
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} |
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} |
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} |
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} |
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/** |
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* Handles 1-1 and 1-n relations. In case 1-1 it handles subsequent relations in connected models |
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* For example, a Monster > HasOne Address > BelongsTo a Country. |
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* |
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* @param \Illuminate\Database\Eloquent\Model $item The current CRUD model. |
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* @param array $formattedData The form data. |
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* |
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* @return bool|null |
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*/ |
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private function createRelationsForItem($item, $formattedData) |
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{ |
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if (! isset($formattedData['relations'])) { |
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return false; |
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} |
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foreach ($formattedData['relations'] as $relationMethod => $relationData) { |
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if (! isset($relationData['model'])) { |
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continue; |
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} |
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$relation = $item->{$relationMethod}(); |
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$relation_type = get_class($relation); |
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switch ($relation_type) { |
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case HasOne::class: |
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case MorphOne::class: |
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// we first check if there are relations of the relation |
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if (isset($relationData['relations'])) { |
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// if there are nested relations, we first add the BelongsTo like in main entry |
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$belongsToRelations = Arr::where($relationData['relations'], function ($relation_data) { |
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return $relation_data['relation_type'] == 'BelongsTo'; |
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}); |
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// adds the values of the BelongsTo relations of this entity to the array of values that will |
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// be saved at the same time like we do in parent entity belongs to relations |
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$valuesWithRelations = $this->associateHasOneBelongsTo($belongsToRelations, $relationData['values'], $relation->getModel()); |
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// remove previously added BelongsTo relations from relation data. |
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$relationData['relations'] = Arr::where($relationData['relations'], function ($item) { |
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return $item['relation_type'] != 'BelongsTo'; |
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}); |
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$modelInstance = $relation->updateOrCreate([], $valuesWithRelations); |
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} else { |
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$modelInstance = $relation->updateOrCreate([], $relationData['values']); |
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} |
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break; |
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case HasMany::class: |
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case MorphMany::class: |
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$relation_values = $relationData['values'][$relationMethod]; |
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if (is_string($relation_values)) { |
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$relation_values = json_decode($relationData['values'][$relationMethod], true); |
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} |
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if ($relation_values === null || count($relation_values) == count($relation_values, COUNT_RECURSIVE)) { |
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$this->attachManyRelation($item, $relation, $relationMethod, $relationData, $relation_values); |
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} else { |
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$this->createManyEntries($item, $relation, $relationMethod, $relationData); |
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} |
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break; |
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} |
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if (isset($relationData['relations'])) { |
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$this->createRelationsForItem($modelInstance, ['relations' => $relationData['relations']]); |
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} |
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} |
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} |
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/** |
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* Associate and dissociate BelongsTo relations in the model. |
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* |
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* @param Model $item |
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* @param array $data The form data. |
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* @return Model Model with relationships set up. |
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*/ |
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protected function associateOrDissociateBelongsToRelations($item, array $data) |
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{ |
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$belongsToFields = $this->getFieldsWithRelationType('BelongsTo'); |
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foreach ($belongsToFields as $relationField) { |
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if (method_exists($item, $this->getOnlyRelationEntity($relationField))) { |
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$relatedId = Arr::get($data, $relationField['name']); |
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if (isset($relatedId) && $relatedId !== null) { |
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$related = $relationField['model']::find($relatedId); |
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$item->{$this->getOnlyRelationEntity($relationField)}()->associate($related); |
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} else { |
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$item->{$this->getOnlyRelationEntity($relationField)}()->dissociate(); |
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} |
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} |
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} |
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return $item; |
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} |
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/** |
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* Associate the nested HasOne -> BelongsTo relations by adding the "connecting key" |
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* to the array of values that is going to be saved with HasOne relation. |
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* |
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* @param array $belongsToRelations |
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* @param array $modelValues |
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* @param Model $relationInstance |
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* @return array |
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*/ |
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private function associateHasOneBelongsTo($belongsToRelations, $modelValues, $modelInstance) |
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{ |
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foreach ($belongsToRelations as $methodName => $values) { |
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$relation = $modelInstance->{$methodName}(); |
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$modelValues[$relation->getForeignKeyName()] = $values['values'][$methodName]; |
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} |
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return $modelValues; |
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} |
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/** |
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* Get a relation data array from the form data. |
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* For each relation defined in the fields through the entity attribute, set the model, the parent model and the |
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* attribute values. |
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* |
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* We traverse this relation array later to create the relations, for example: |
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* |
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* Current model HasOne Address, this Address (line_1, country_id) BelongsTo Country through country_id in Address Model. |
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* |
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* So when editing current model crud user have two fields address.line_1 and address.country (we infer country_id from relation) |
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* |
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* Those will be nested accordingly in this relation array, so address relation will have a nested relation with country. |
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* |
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* |
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* @param array $data The form data. |
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* |
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* @return array The formatted relation data. |
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*/ |
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315
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private function getRelationDataFromFormData($data) |
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316
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{ |
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317
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// exclude the already attached belongs to relations but include nested belongs to. |
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318
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$relation_fields = Arr::where($this->getRelationFields(), function ($field, $key) { |
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319
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return $field['relation_type'] !== 'BelongsTo' || $this->isNestedRelation($field); |
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|
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320
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}); |
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321
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322
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$relationData = []; |
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323
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|
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324
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foreach ($relation_fields as $relation_field) { |
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325
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$attributeKey = $this->parseRelationFieldNamesFromHtml([$relation_field])[0]['name']; |
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326
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if (isset($relation_field['pivot']) && $relation_field['pivot'] !== true) { |
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327
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$key = implode('.relations.', explode('.', $this->getOnlyRelationEntity($relation_field))); |
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328
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$fieldData = Arr::get($relationData, 'relations.'.$key, []); |
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329
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if (! array_key_exists('model', $fieldData)) { |
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330
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$fieldData['model'] = $relation_field['model']; |
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331
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} |
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332
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|
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if (! array_key_exists('parent', $fieldData)) { |
|
333
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$fieldData['parent'] = $this->getRelationModel($attributeKey, -1); |
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|
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|
|
334
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} |
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335
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|
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336
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// when using HasMany/MorphMany if fallback_id is provided instead of deleting the models |
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337
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// from database we resort to this fallback provided by developer |
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338
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|
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if (array_key_exists('fallback_id', $relation_field)) { |
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339
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$fieldData['fallback_id'] = $relation_field['fallback_id']; |
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340
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} |
|
341
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|
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|
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342
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|
// when using HasMany/MorphMany and column is nullable, by default backpack sets the value to null. |
|
343
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|
|
// this allow developers to override that behavior and force deletion from database |
|
344
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|
$fieldData['force_delete'] = $relation_field['force_delete'] ?? false; |
|
345
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|
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|
|
346
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|
|
if (! array_key_exists('relation_type', $fieldData)) { |
|
347
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|
|
$fieldData['relation_type'] = $relation_field['relation_type']; |
|
348
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|
|
} |
|
349
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|
|
$relatedAttribute = Arr::last(explode('.', $attributeKey)); |
|
350
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|
|
$fieldData['values'][$relatedAttribute] = Arr::get($data, $attributeKey); |
|
351
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|
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|
|
352
|
|
|
Arr::set($relationData, 'relations.'.$key, $fieldData); |
|
353
|
|
|
} |
|
354
|
|
|
} |
|
355
|
|
|
|
|
356
|
|
|
return $relationData; |
|
357
|
|
|
} |
|
358
|
|
|
|
|
359
|
|
|
/** |
|
360
|
|
|
* When using the HasMany/MorphMany relations as selectable elements we use this function to sync those relations. |
|
361
|
|
|
* Here we allow for different functionality than when creating. Developer could use this relation as a |
|
362
|
|
|
* selectable list of items that can belong to one/none entity at any given time. |
|
363
|
|
|
* |
|
364
|
|
|
* @return void |
|
365
|
|
|
*/ |
|
366
|
|
|
public function attachManyRelation($item, $relation, $relationMethod, $relationData, $relation_values) |
|
367
|
|
|
{ |
|
368
|
|
|
$model_instance = $relation->getRelated(); |
|
369
|
|
|
$force_delete = $relationData['force_delete']; |
|
370
|
|
|
$relation_foreign_key = $relation->getForeignKeyName(); |
|
371
|
|
|
$relation_local_key = $relation->getLocalKeyName(); |
|
372
|
|
|
|
|
373
|
|
|
$relation_column_is_nullable = $model_instance->isColumnNullable($relation_foreign_key); |
|
374
|
|
|
|
|
375
|
|
|
if ($relation_values !== null && $relationData['values'][$relationMethod][0] !== null) { |
|
376
|
|
|
// we add the new values into the relation |
|
377
|
|
|
$model_instance->whereIn($model_instance->getKeyName(), $relation_values) |
|
378
|
|
|
->update([$relation_foreign_key => $item->{$relation_local_key}]); |
|
379
|
|
|
|
|
380
|
|
|
// we clear up any values that were removed from model relation. |
|
381
|
|
|
// if developer provided a fallback id, we use it |
|
382
|
|
|
// if column is nullable we set it to null if developer didn't specify `force_delete => true` |
|
383
|
|
|
// if none of the above we delete the model from database |
|
384
|
|
|
if (isset($relationData['fallback_id'])) { |
|
385
|
|
|
$model_instance->whereNotIn($model_instance->getKeyName(), $relation_values) |
|
386
|
|
|
->where($relation_foreign_key, $item->{$relation_local_key}) |
|
387
|
|
|
->update([$relation_foreign_key => $relationData['fallback_id']]); |
|
388
|
|
|
} else { |
|
389
|
|
|
if (! $relation_column_is_nullable || $force_delete) { |
|
390
|
|
|
$model_instance->whereNotIn($model_instance->getKeyName(), $relation_values) |
|
391
|
|
|
->where($relation_foreign_key, $item->{$relation_local_key}) |
|
392
|
|
|
->delete(); |
|
393
|
|
|
} else { |
|
394
|
|
|
$model_instance->whereNotIn($model_instance->getKeyName(), $relation_values) |
|
395
|
|
|
->where($relation_foreign_key, $item->{$relation_local_key}) |
|
396
|
|
|
->update([$relation_foreign_key => null]); |
|
397
|
|
|
} |
|
398
|
|
|
} |
|
399
|
|
|
} else { |
|
400
|
|
|
// the developer cleared the selection |
|
401
|
|
|
// we gonna clear all related values by setting up the value to the fallback id, to null or delete. |
|
402
|
|
|
if (isset($relationData['fallback_id'])) { |
|
403
|
|
|
$model_instance->where($relation_foreign_key, $item->{$relation_local_key}) |
|
404
|
|
|
->update([$relation_foreign_key => $relationData['fallback_id']]); |
|
405
|
|
|
} else { |
|
406
|
|
|
if (!$relation_column_is_nullable || $force_delete) { |
|
407
|
|
|
$model_instance->where($relation_foreign_key, $item->{$relation_local_key})->delete(); |
|
408
|
|
|
} else { |
|
409
|
|
|
$model_instance->where($relation_foreign_key, $item->{$relation_local_key}) |
|
410
|
|
|
->update([$relation_foreign_key => null]); |
|
411
|
|
|
} |
|
412
|
|
|
} |
|
413
|
|
|
} |
|
414
|
|
|
} |
|
415
|
|
|
|
|
416
|
|
|
/** |
|
417
|
|
|
* Handle HasMany/MorphMany relations when used as creatable entries in the crud. |
|
418
|
|
|
* By using repeatable field, developer can allow the creation of such entries |
|
419
|
|
|
* in the crud forms. |
|
420
|
|
|
* |
|
421
|
|
|
* @return void |
|
422
|
|
|
*/ |
|
423
|
|
|
public function createManyEntries($entry, $relation, $relationMethod, $relationData) |
|
424
|
|
|
{ |
|
425
|
|
|
$items = json_decode($relationData['values'][$relationMethod], true); |
|
426
|
|
|
|
|
427
|
|
|
$relation_local_key = $relation->getLocalKeyName(); |
|
428
|
|
|
|
|
429
|
|
|
// if the collection is empty we clear all previous values in database if any. |
|
430
|
|
|
if (empty($items)) { |
|
431
|
|
|
$entry->{$relationMethod}()->sync([]); |
|
432
|
|
|
} else { |
|
433
|
|
|
$created_ids = []; |
|
434
|
|
|
|
|
435
|
|
|
foreach ($items as $item) { |
|
436
|
|
|
if (isset($item[$relation_local_key]) && ! empty($item[$relation_local_key])) { |
|
437
|
|
|
$entry->{$relationMethod}()->updateOrCreate([$relation_local_key => $item[$relation_local_key]], $item); |
|
438
|
|
|
} else { |
|
439
|
|
|
$created_ids[] = $entry->{$relationMethod}()->create($item)->{$relation_local_key}; |
|
440
|
|
|
} |
|
441
|
|
|
} |
|
442
|
|
|
|
|
443
|
|
|
// get from $items the sent ids, and merge the ones created. |
|
444
|
|
|
$relatedItemsSent = array_merge(array_filter(Arr::pluck($items, $relation_local_key)), $created_ids); |
|
445
|
|
|
|
|
446
|
|
|
if (! empty($relatedItemsSent)) { |
|
447
|
|
|
// we perform the cleanup of removed database items |
|
448
|
|
|
$entry->{$relationMethod}()->whereNotIn($relation_local_key, $relatedItemsSent)->delete(); |
|
449
|
|
|
} |
|
450
|
|
|
} |
|
451
|
|
|
} |
|
452
|
|
|
} |
|
453
|
|
|
|
Laravel-Backpack /
CRUD
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