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<?php
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namespace Nuwave\Lighthouse\Schema\Directives; |
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use Nuwave\Lighthouse\Exceptions\DefinitionException; |
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use Nuwave\Lighthouse\Schema\Values\FieldValue; |
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use Nuwave\Lighthouse\Support\Contracts\FieldResolver; |
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class RenameDirective extends BaseDirective implements FieldResolver |
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{
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public static function definition(): string |
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{
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return /** @lang GraphQL */ <<<'GRAPHQL' |
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"""
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Change the internally used name of a field or argument.
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This does not change the schema from a client perspective.
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"""
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directive @rename(
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"""
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The internal name of an attribute/property/key.
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"""
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attribute: String!
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) on FIELD_DEFINITION | ARGUMENT_DEFINITION | INPUT_FIELD_DEFINITION
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GRAPHQL; |
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}
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public function resolveField(FieldValue $fieldValue): FieldValue |
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{
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$attribute = $this->attributeArgValue(); |
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return $fieldValue->setResolver( |
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function ($rootValue) use ($attribute) { |
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return data_get($rootValue, $attribute); |
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}
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);
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}
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/**
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* Retrieves the attribute argument for the directive.
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*
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* @throws \Nuwave\Lighthouse\Exceptions\DefinitionException
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*/
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public function attributeArgValue(): string |
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{
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$attribute = $this->directiveArgValue('attribute'); |
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if (! $attribute) { |
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throw new DefinitionException( |
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"The @{$this->name()} directive requires an `attribute` argument." |
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);
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}
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return $attribute; |
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}
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}
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