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<?php |
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namespace Neurony\Duplicate\Traits; |
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use Closure; |
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use Exception; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Support\Arr; |
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use Illuminate\Support\Facades\DB; |
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use Neurony\Duplicate\Helpers\RelationHelper; |
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use Neurony\Duplicate\Options\DuplicateOptions; |
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trait HasDuplicates |
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{ |
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/** |
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* The container for all the options necessary for this trait. |
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* Options can be viewed in the Neurony\Duplicate\Options\DuplicateOptions file. |
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* |
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* @var DuplicateOptions |
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*/ |
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protected $duplicateOptions; |
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/** |
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* Set the options for the HasDuplicates trait. |
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* |
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* @return DuplicateOptions |
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*/ |
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abstract public function getDuplicateOptions(): DuplicateOptions; |
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/** |
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* Register a duplicating model event with the dispatcher. |
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* |
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* @param Closure|string $callback |
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* @return void |
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*/ |
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public static function duplicating($callback): void |
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{ |
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static::registerModelEvent('duplicating', $callback); |
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} |
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/** |
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* Register a duplicated model event with the dispatcher. |
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* |
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* @param Closure|string $callback |
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* @return void |
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*/ |
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public static function duplicated($callback): void |
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{ |
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static::registerModelEvent('duplicated', $callback); |
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} |
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/** |
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* Duplicate a model instance and it's relations. |
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* |
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* @return Model|bool |
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* @throws Exception |
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*/ |
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public function saveAsDuplicate() |
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{ |
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try { |
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if ($this->fireModelEvent('duplicating') === false) { |
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return false; |
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} |
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$this->initDuplicateOptions(); |
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$model = DB::transaction(function () { |
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$model = $this->duplicateModel(); |
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if ($this->duplicateOptions->shouldDuplicateDeeply !== true) { |
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return $model; |
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} |
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foreach ($this->getRelationsForDuplication() as $relation => $attributes) { |
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if (RelationHelper::isChild($attributes['type'])) { |
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$this->duplicateDirectRelation($model, $relation); |
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} |
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if (RelationHelper::isPivoted($attributes['type'])) { |
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$this->duplicatePivotedRelation($model, $relation); |
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} |
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} |
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return $model; |
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}); |
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$this->fireModelEvent('duplicated', false); |
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return $model; |
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} catch (Exception $e) { |
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throw $e; |
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} |
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} |
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/** |
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* Get a replicated instance of the original model's instance. |
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* |
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* @return Model |
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* @throws Exception |
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*/ |
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protected function duplicateModel(): Model |
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{ |
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$model = $this->duplicateModelWithExcluding(); |
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$model = $this->duplicateModelWithUnique($model); |
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$model->save(); |
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return $model; |
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} |
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/** |
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* Duplicate a direct relation. |
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* Subsequently save new relation records for the initial model instance. |
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* |
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* @param Model $model |
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* @param string $relation |
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* @return Model |
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* @throws Exception |
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*/ |
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protected function duplicateDirectRelation(Model $model, string $relation): Model |
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{ |
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$this->{$relation}()->get()->each(function ($rel) use ($model, $relation) { |
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$rel = $this->duplicateRelationWithExcluding($rel, $relation); |
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$rel = $this->duplicateRelationWithUnique($rel, $relation); |
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$model->{$relation}()->save($rel); |
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}); |
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return $model; |
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} |
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/** |
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* Duplicate a pivoted relation. |
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* Subsequently attach new pivot records corresponding to the relation for the initial model instance. |
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* |
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* @param Model $model |
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* @param string $relation |
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* @return Model |
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* @throws Exception |
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*/ |
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protected function duplicatePivotedRelation(Model $model, string $relation): Model |
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{ |
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$this->{$relation}()->get()->each(function ($rel) use ($model, $relation) { |
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$attributes = $this->establishDuplicatablePivotAttributes($rel); |
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$model->{$relation}()->attach($rel, $attributes); |
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}); |
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return $model; |
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} |
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/** |
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* Get the relations that should be duplicated alongside the original model. |
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* |
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* @return array |
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* @throws \ReflectionException |
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*/ |
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protected function getRelationsForDuplication(): array |
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{ |
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$relations = []; |
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$excluded = $this->duplicateOptions->excludedRelations ?: []; |
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foreach (RelationHelper::getModelRelations($this) as $relation => $attributes) { |
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if (! in_array($relation, $excluded)) { |
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$relations[$relation] = $attributes; |
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} |
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} |
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return $relations; |
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} |
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/** |
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* Replicate a model instance, excluding attributes provided in the model's getDuplicateOptions() method. |
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* |
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* @return Model |
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*/ |
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private function duplicateModelWithExcluding(): Model |
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{ |
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$except = []; |
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$excluded = $this->duplicateOptions->excludedColumns; |
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if ($this->usesTimestamps()) { |
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$except = array_merge($except, [ |
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$this->getCreatedAtColumn(), |
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$this->getUpdatedAtColumn(), |
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]); |
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} |
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if ($excluded && is_array($excluded) && ! empty($excluded)) { |
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$except = array_merge($except, $excluded); |
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} |
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return $this->replicate($except); |
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} |
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/** |
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* Update a model instance. |
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* With unique values for the attributes provided in the model's getDuplicateOptions() method. |
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* |
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* @param Model $model |
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* @return Model |
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*/ |
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private function duplicateModelWithUnique(Model $model): Model |
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{ |
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$unique = $this->duplicateOptions->uniqueColumns; |
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if (! $unique || ! is_array($unique) || empty($unique)) { |
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return $model; |
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} |
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View Code Duplication |
foreach ($unique as $column) { |
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$i = 1; |
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$original = $value = $model->{$column}; |
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while (static::withoutGlobalScopes()->where($column, $value)->first()) { |
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$value = $original.' ('.$i++.')'; |
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$model->{$column} = $value; |
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} |
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} |
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return $model; |
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} |
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/** |
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* Replicate a model relation instance, excluding attributes provided in the model's getDuplicateOptions() method. |
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* |
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* @param Model $model |
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* @param string $relation |
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* @return Model |
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*/ |
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private function duplicateRelationWithExcluding(Model $model, string $relation): Model |
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{ |
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$attributes = null; |
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$excluded = $this->duplicateOptions->excludedRelationColumns; |
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if ($excluded && is_array($excluded) && ! empty($excluded)) { |
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if (array_key_exists($relation, $excluded)) { |
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$attributes = $excluded[$relation]; |
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} |
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} |
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return $model->replicate($attributes); |
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} |
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/** |
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* Update a relation for the model instance. |
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* With unique values for the attributes attributes provided in the model's getDuplicateOptions() method. |
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* |
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* @param Model $model |
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* @param string $relation |
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* @return Model |
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*/ |
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private function duplicateRelationWithUnique(Model $model, string $relation): Model |
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{ |
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$unique = $this->duplicateOptions->uniqueRelationColumns; |
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if (! $unique || ! is_array($unique) || empty($unique)) { |
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return $model; |
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} |
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if (array_key_exists($relation, $unique)) { |
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View Code Duplication |
foreach ($unique[$relation] as $column) { |
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$i = 1; |
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$original = $value = $model->{$column}; |
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while ($model->where($column, $value)->first()) { |
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$value = $original.' ('.$i++.')'; |
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$model->{$column} = $value; |
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} |
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} |
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} |
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return $model; |
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} |
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/** |
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* Get additional pivot attributes that should be saved when duplicating a pivoted relation. |
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* Usually, these are attributes coming from the withPivot() method defined on the relation. |
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* |
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* @param Model $model |
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* @return array |
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*/ |
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protected function establishDuplicatablePivotAttributes(Model $model): array |
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{ |
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$pivot = $model->pivot; |
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return Arr::except($pivot->getAttributes(), [ |
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$pivot->getKeyName(), |
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$pivot->getForeignKey(), |
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$pivot->getOtherKey(), |
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$pivot->getCreatedAtColumn(), |
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$pivot->getUpdatedAtColumn(), |
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]); |
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} |
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/** |
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* Instantiate the duplicate options. |
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* |
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* @return void |
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*/ |
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protected function initDuplicateOptions(): void |
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{ |
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if ($this->duplicateOptions === null) { |
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$this->duplicateOptions = $this->getDuplicateOptions(); |
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} |
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} |
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} |
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idableprovides a methodequalsIdthat in turn relies on the methodgetId(). If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()as an abstract method to the trait will make sure it is available.