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<?php |
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namespace TheCodingMachine\GraphQL\Controllers; |
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use GraphQL\Type\Definition\FieldDefinition; |
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use GraphQL\Type\Definition\InputObjectType; |
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use GraphQL\Type\Definition\ListOfType; |
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use GraphQL\Type\Definition\NonNull; |
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use GraphQL\Type\Definition\OutputType; |
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use GraphQL\Type\Definition\Type; |
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use TheCodingMachine\GraphQL\Controllers\Types\DateTimeType; |
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/** |
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* A GraphQL field that maps to a PHP method automatically. |
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*/ |
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class QueryField extends FieldDefinition |
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{ |
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/** |
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* @var HydratorInterface |
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*/ |
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private $hydrator; |
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/** |
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* QueryField constructor. |
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* @param string $name |
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* @param OutputType&Type $type |
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* @param array[] $arguments Indexed by argument name, value: ['type'=>InputType, 'default'=>val]. |
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* @param callable|null $resolve The method to execute |
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* @param string|null $targetMethodOnSource The name of the method to execute on the source object. Mutually exclusive with $resolve parameter. |
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* @param HydratorInterface $hydrator |
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* @param null|string $comment |
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* @param bool $injectSource Whether to inject the source object (for Fields), or null for Query and Mutations |
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* @param array $additionalConfig |
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*/ |
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public function __construct(string $name, OutputType $type, array $arguments, ?callable $resolve, ?string $targetMethodOnSource, HydratorInterface $hydrator, ?string $comment, bool $injectSource, array $additionalConfig = []) |
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{ |
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// FIXME: remove hydrator since not used!!!! |
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$this->hydrator = $hydrator; |
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$config = [ |
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'name' => $name, |
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'type' => $type, |
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'args' => array_map(function(array $item) { return $item['type']; }, $arguments) |
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]; |
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if ($comment) { |
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$config['description'] = $comment; |
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} |
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$config['resolve'] = function ($source, array $args) use ($resolve, $targetMethodOnSource, $arguments, $injectSource) { |
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$toPassArgs = []; |
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if ($injectSource) { |
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$toPassArgs[] = $source; |
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} |
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foreach ($arguments as $name => $arr) { |
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$type = $arr['type']; |
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if (isset($args[$name])) { |
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$val = $args[$name]; |
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$type = $this->stripNonNullType($type); |
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if ($type instanceof ListOfType) { |
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$subtype = $this->stripNonNullType($type->getWrappedType()); |
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$val = array_map(function ($item) use ($subtype) { |
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if ($subtype instanceof DateTimeType) { |
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return new \DateTimeImmutable($item); |
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} elseif ($subtype instanceof InputObjectType) { |
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return $this->hydrator->hydrate($item, $subtype); |
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}; |
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return $item; |
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}, $val); |
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} elseif ($type instanceof DateTimeType) { |
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$val = new \DateTimeImmutable($val); |
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} elseif ($type instanceof InputObjectType) { |
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$val = $this->hydrator->hydrate($val, $type); |
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} |
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} elseif (array_key_exists('default', $arr)) { |
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$val = $arr['default']; |
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} else { |
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throw new GraphQLException("Expected argument '$name' was not provided."); |
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} |
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$toPassArgs[] = $val; |
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} |
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if ($resolve !== null) { |
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return $resolve(...$toPassArgs); |
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} |
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if ($targetMethodOnSource !== null) { |
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$method = [$source, $targetMethodOnSource]; |
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return $method(...$toPassArgs); |
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} |
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throw new \InvalidArgumentException('The QueryField constructor should be passed either a resolve method or a target method on source object.'); |
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}; |
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$config += $additionalConfig; |
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parent::__construct($config); |
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} |
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private function stripNonNullType(Type $type): Type |
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{ |
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if ($type instanceof NonNull) { |
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return $this->stripNonNullType($type->getWrappedType()); |
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} |
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return $type; |
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} |
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} |
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thecodingmachine /
graphql-controllers
