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<?php |
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declare(strict_types=1); |
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namespace Overblog\GraphQLBundle\Resolver; |
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use Closure; |
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use GraphQL\Type\Definition\ResolveInfo; |
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use function is_array; |
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use function is_callable; |
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use function is_object; |
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use function str_replace; |
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class FieldResolver |
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{ |
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/** |
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* Allowed method prefixes |
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*/ |
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private const PREFIXES = ['get', 'is', 'has', '']; |
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/** |
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* @param mixed $parentValue |
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* @param mixed $args |
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* @param mixed $context |
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* |
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* @return mixed|null |
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*/ |
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public function __invoke($parentValue, $args, $context, ResolveInfo $info) |
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{ |
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$fieldName = $info->fieldName; |
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$value = static::valueFromObjectOrArray($parentValue, $fieldName); |
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return $value instanceof Closure ? $value($parentValue, $args, $context, $info) : $value; |
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} |
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/** |
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* @param object|array $objectOrArray |
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* |
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* @return mixed|null |
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*/ |
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public static function valueFromObjectOrArray($objectOrArray, string $fieldName) |
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{ |
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if (is_array($objectOrArray) && isset($objectOrArray[$fieldName])) { |
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return $objectOrArray[$fieldName]; |
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} |
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if (is_object($objectOrArray)) { |
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foreach (static::PREFIXES as $prefix) { |
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$method = $prefix.str_replace('_', '', $fieldName); |
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if (is_callable([$objectOrArray, $method])) { |
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return $objectOrArray->$method(); |
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} |
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} |
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if (isset($objectOrArray->$fieldName)) { |
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return $objectOrArray->$fieldName; |
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} |
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} |
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return null; |
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} |
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} |
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overblog /
GraphQLBundle
