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<?php |
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namespace Bakery\Support; |
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use Bakery\Utils\Utils; |
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use Bakery\Errors\ValidationError; |
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use Illuminate\Auth\Access\Response; |
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use Bakery\Types\Definitions\RootType; |
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use GraphQL\Type\Definition\ResolveInfo; |
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use Illuminate\Support\Facades\Validator; |
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use Bakery\Exceptions\UnauthorizedException; |
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use GraphQL\Type\Definition\Type as GraphQLType; |
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use Illuminate\Auth\Access\HandlesAuthorization; |
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use Illuminate\Auth\Access\AuthorizationException; |
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abstract class RootField |
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{ |
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use HandlesAuthorization; |
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/** |
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* @var \Bakery\Support\TypeRegistry |
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*/ |
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protected $registry; |
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/** |
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* Name of the field. |
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* |
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* @var string |
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*/ |
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protected $name; |
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/** |
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* The fields of the field. |
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* |
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* @var array |
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*/ |
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protected $fields; |
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/** |
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* The description of the field. |
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* |
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* @var string |
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*/ |
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protected $description; |
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/** |
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* The attributes of the RootField. |
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* |
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* @var array |
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*/ |
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protected $attributes = []; |
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/** |
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* RootField constructor. |
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* |
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* @param \Bakery\Support\TypeRegistry $registry |
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*/ |
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public function __construct(TypeRegistry $registry) |
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{ |
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$this->registry = $registry; |
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} |
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/** |
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* The attributes of the RootField. |
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* |
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* @return array |
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*/ |
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public function attributes() |
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{ |
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return []; |
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} |
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/** |
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* Define the type of the RootField. |
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* |
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* @return RootType |
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*/ |
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abstract public function type(): RootType; |
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/** |
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* Get the underlying field of the type and convert it to a type. |
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* |
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* @return \GraphQL\Type\Definition\Type |
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*/ |
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public function getType(): GraphQLType |
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{ |
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return $this->type()->toType(); |
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} |
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/** |
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* The name of the field. |
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* |
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* @return null|string |
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*/ |
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public function name(): ?string |
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{ |
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return $this->name; |
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} |
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/** |
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* Get the name of the field. |
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* |
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* @return string |
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*/ |
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public function getName(): string |
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{ |
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$name = $this->name(); |
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Utils::invariant($name, 'RootField '.get_class($this).' has no name defined.'); |
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return $name; |
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} |
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/** |
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* The arguments for the RootField. |
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* |
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* @return array |
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*/ |
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public function args(): array |
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{ |
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return []; |
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} |
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/** |
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* Get the arguments of the field and convert them to types. |
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* |
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* @return array |
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*/ |
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public function getArgs(): array |
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{ |
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return collect($this->args())->map(function (RootType $type) { |
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return $type->toType(); |
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})->toArray(); |
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} |
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/** |
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* Define the fields. |
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* |
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* @return array |
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*/ |
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public function fields() |
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{ |
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return $this->fields; |
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} |
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/** |
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* Get the fields for a field. |
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* |
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* @return array|null |
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*/ |
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public function getFields(): ?array |
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{ |
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return $this->fields(); |
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} |
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/** |
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* Define the description. |
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* |
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* @return string |
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*/ |
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public function description() |
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{ |
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return $this->description; |
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} |
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/** |
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* Get the description for a field. |
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* |
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* @return null|string |
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*/ |
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public function getDescription(): ?string |
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{ |
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return $this->description(); |
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} |
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/** |
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* Retrieve the resolver for the RootField. |
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* |
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* @return callable|null |
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*/ |
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private function getResolver() |
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{ |
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if (! method_exists($this, 'resolve')) { |
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return null; |
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} |
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return [$this, 'abstractResolver']; |
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} |
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/** |
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* @param $root |
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* @param array $args |
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* @param $context |
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* @param ResolveInfo $info |
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* @return null |
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*/ |
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public function abstractResolver($root, array $args, $context, ResolveInfo $info) |
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{ |
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if (! method_exists($this, 'resolve')) { |
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return null; |
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} |
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$args = new Arguments($args); |
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$this->validate($args); |
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$this->guard($args); |
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return $this->resolve($args, $root, $context, $info); |
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} |
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/** |
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* Check if the user is authorized to perform the query. |
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* @param Arguments $args |
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*/ |
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protected function guard(Arguments $args): void |
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{ |
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if (method_exists($this, 'authorize')) { |
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try { |
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$result = $this->authorize($args); |
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if (! $result instanceof Response) { |
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$result = $result ? Response::allow() : Response::deny(); |
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} |
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} catch (AuthorizationException $exception) { |
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$result = $exception->toResponse(); |
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} |
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if ($result->denied()) { |
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throw new UnauthorizedException($result->message(), $result->code()); |
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} |
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} |
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} |
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/** |
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* Validate the arguments of the query. |
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* |
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* @param Arguments $args |
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* @throws ValidationError |
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*/ |
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protected function validate(Arguments $args): void |
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{ |
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if (method_exists($this, 'rules')) { |
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$rules = $this->rules($args); |
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$messages = method_exists($this, 'messages') ? $this->messages() : []; |
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$attributes = method_exists($this, 'attributes') ? $this->attributes() : []; |
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$validator = Validator::make($args->toArray(), $rules, $messages, $attributes); |
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if ($validator->fails()) { |
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throw new ValidationError($validator); |
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} |
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} |
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} |
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/** |
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* Get the attributes from the container. |
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* |
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* @return array |
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*/ |
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public function getAttributes() |
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{ |
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return [ |
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'name' => $this->getName(), |
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'args' => $this->getArgs(), |
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'type' => $this->getType(), |
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'fields' => $this->getFields(), |
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'description' => $this->getDescription(), |
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'resolve' => $this->getResolver(), |
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]; |
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} |
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/** |
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* Convert the RootField instance to an array. |
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* |
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* @return array |
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*/ |
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public function toArray() |
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{ |
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return $this->getAttributes(); |
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} |
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/** |
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* Get the registry. |
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* |
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* @return \Bakery\Support\TypeRegistry |
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*/ |
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public function getRegistry(): TypeRegistry |
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{ |
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return $this->registry; |
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} |
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/** |
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* Set the registry on the root field. |
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* |
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* @param \Bakery\Support\TypeRegistry $registry |
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* @return $this |
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*/ |
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public function setRegistry(TypeRegistry $registry): self |
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{ |
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$this->registry = $registry; |
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return $this; |
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} |
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} |
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