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<?php |
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namespace Staudenmeir\EloquentJsonRelations\Relations; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Collection; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Database\Eloquent\Relations\Pivot; |
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use RuntimeException; |
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use Staudenmeir\EloquentJsonRelations\Grammars\MySqlGrammar; |
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use Staudenmeir\EloquentJsonRelations\Grammars\PostgresGrammar; |
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use Staudenmeir\EloquentJsonRelations\Grammars\SqlServerGrammar; |
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trait IsJsonRelation |
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{ |
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/** |
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* The base path of the foreign key. |
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* |
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* @var string |
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*/ |
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protected $path; |
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/** |
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* The optional object key of the foreign key. |
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* |
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* @var string |
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*/ |
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protected $key; |
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/** |
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* Create a new JSON relationship instance. |
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* |
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* @return void |
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*/ |
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public function __construct() |
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{ |
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$args = func_get_args(); |
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$foreignKey = explode('[]->', $args[2]); |
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$this->path = $foreignKey[0]; |
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$this->key = $foreignKey[1] ?? null; |
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parent::__construct(...$args); |
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} |
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/** |
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* Execute the query as a "select" statement. |
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* |
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* @param array $columns |
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* @return \Illuminate\Database\Eloquent\Collection |
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*/ |
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public function get($columns = ['*']) |
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{ |
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$models = parent::get($columns); |
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if ($this->key && !empty($this->parent->getAttributes())) { |
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$this->hydratePivotRelation($models, $this->parent); |
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} |
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return $models; |
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} |
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/** |
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* Hydrate the pivot relationship on the models. |
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* |
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* @param \Illuminate\Database\Eloquent\Collection $models |
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* @param \Illuminate\Database\Eloquent\Model $parent |
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* @return void |
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*/ |
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protected function hydratePivotRelation(Collection $models, Model $parent) |
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{ |
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foreach ($models as $i => $model) { |
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$clone = clone $model; |
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$models[$i] = $clone->setRelation('pivot', $this->pivotRelation($clone, $parent)); |
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} |
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} |
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/** |
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* Get the pivot relationship from the query. |
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* |
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* @param \Illuminate\Database\Eloquent\Model $model |
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* @param \Illuminate\Database\Eloquent\Model $parent |
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* @return \Illuminate\Database\Eloquent\Model |
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*/ |
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protected function pivotRelation(Model $model, Model $parent) |
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{ |
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$attributes = $this->pivotAttributes($model, $parent); |
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return Pivot::fromAttributes($model, $attributes, null, true); |
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} |
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/** |
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* Get the pivot attributes from a model. |
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* |
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* @param \Illuminate\Database\Eloquent\Model $model |
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* @param \Illuminate\Database\Eloquent\Model $parent |
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* @return array |
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*/ |
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abstract protected function pivotAttributes(Model $model, Model $parent); |
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/** |
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* Execute the query and get the first related model. |
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* |
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* @param array $columns |
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* @return mixed |
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*/ |
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public function first($columns = ['*']) |
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{ |
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return $this->take(1)->get($columns)->first(); |
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} |
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/** |
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* Get the fully qualified path of the relationship. |
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* |
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* @return string |
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*/ |
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public function getQualifiedPath() |
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{ |
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return $this->parent->qualifyColumn($this->path); |
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} |
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/** |
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* Get the JSON grammar. |
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* |
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* @param \Illuminate\Database\Eloquent\Builder $query |
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* @return \Staudenmeir\EloquentJsonRelations\Grammars\JsonGrammar |
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*/ |
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protected function getJsonGrammar(Builder $query) |
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{ |
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$driver = $query->getConnection()->getDriverName(); |
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switch ($driver) { |
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case 'mysql': |
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return new MySqlGrammar; |
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case 'pgsql': |
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return new PostgresGrammar; |
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case 'sqlsrv': |
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return new SqlServerGrammar; |
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} |
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throw new RuntimeException('This database is not supported.'); // @codeCoverageIgnore |
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} |
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} |
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staudenmeir /
eloquent-json-relations
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