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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| <?php | ||
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| namespace Nuwave\Lighthouse\Select; | ||
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| use Nuwave\Lighthouse\Schema\Directives\BaseDirective; | ||
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| class SelectDirective extends BaseDirective | ||
| { | ||
| public static function definition(): string | ||
| { | ||
| return /** @lang GraphQL */ <<<'GRAPHQL' | ||
| """ | ||
| Specify the SQL column dependencies of this field. | ||
| """ | ||
| directive @select( | ||
| """ | ||
| SQL columns names to pass to the Eloquent query builder | ||
| """ | ||
| columns: [String!] | ||
| ) on FIELD_DEFINITION | ||
| GRAPHQL; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| <?php | ||
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| namespace Nuwave\Lighthouse\Select; | ||
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| use GraphQL\Language\AST\Node; | ||
| use Illuminate\Database\Eloquent\Model; | ||
| use Nuwave\Lighthouse\Schema\AST\ASTBuilder; | ||
| use Nuwave\Lighthouse\Schema\AST\ASTHelper; | ||
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| class SelectHelper | ||
| { | ||
| /** | ||
| * Given a field definition node, resolve info, and a model name, return the SQL columns that should be selected. | ||
| * Accounts for relationships and the rename and select directives. | ||
| * | ||
| * @param mixed[] $fieldSelection | ||
| * @return string[] | ||
| */ | ||
| public static function getSelectColumns(Node $definitionNode, array $fieldSelection, string $modelName): array | ||
| { | ||
| $returnTypeName = ASTHelper::getUnderlyingTypeName($definitionNode); | ||
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| /** @var \Nuwave\Lighthouse\Schema\AST\DocumentAST $documentAST */ | ||
| $documentAST = app(ASTBuilder::class)->documentAST(); | ||
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| $type = $documentAST->types[$returnTypeName]; | ||
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| /** @var iterable<\GraphQL\Language\AST\FieldDefinitionNode> $fieldDefinitions */ | ||
| $fieldDefinitions = $type->fields; | ||
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| $model = new $modelName; | ||
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| $selectColumns = []; | ||
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| foreach ($fieldSelection as $field) { | ||
| $fieldDefinition = ASTHelper::firstByName($fieldDefinitions, $field); | ||
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| if ($fieldDefinition) { | ||
| $name = $fieldDefinition->name->value; | ||
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| if (ASTHelper::hasDirective($fieldDefinition, 'select')) { | ||
| // append selected columns in select directive to seletion | ||
| $directive = ASTHelper::directiveDefinition($fieldDefinition, 'select'); | ||
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| if ($directive) { | ||
| $selectFields = ASTHelper::directiveArgValue($directive, 'columns') ?? []; | ||
| $selectColumns = array_merge($selectColumns, $selectFields); | ||
| } | ||
| } elseif (ASTHelper::hasDirective($fieldDefinition, 'rename')) { | ||
| // append renamed attribute to selection | ||
| $directive = ASTHelper::directiveDefinition($fieldDefinition, 'rename'); | ||
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| if ($directive) { | ||
| $renamedAttribute = ASTHelper::directiveArgValue($directive, 'attribute'); | ||
| array_push($selectColumns, $renamedAttribute); | ||
| } | ||
| } elseif (ASTHelper::hasDirective($fieldDefinition, 'count')) { | ||
| // append relationship local key | ||
| $directive = ASTHelper::directiveDefinition($fieldDefinition, 'count'); | ||
|
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| if ($directive) { | ||
| $relationName = ASTHelper::directiveArgValue($directive, 'relation', $name); | ||
|
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| if ($relationName) { | ||
| array_push($selectColumns, $model->{$relationName}()->getLocalKeyName()); | ||
| } | ||
| } | ||
| } elseif (ASTHelper::hasDirective($fieldDefinition, 'hasOne')) { | ||
| // append relationship local key | ||
| $directive = ASTHelper::directiveDefinition($fieldDefinition, 'hasOne'); | ||
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| if ($directive) { | ||
| $relationName = ASTHelper::directiveArgValue($directive, 'relation', $name); | ||
| array_push($selectColumns, $model->{$relationName}()->getLocalKeyName()); | ||
| } | ||
| } elseif (ASTHelper::hasDirective($fieldDefinition, 'hasMany')) { | ||
| // append relationship local key | ||
| $directive = ASTHelper::directiveDefinition($fieldDefinition, 'hasMany'); | ||
|
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| if ($directive) { | ||
| $relationName = ASTHelper::directiveArgValue($directive, 'relation', $name); | ||
| array_push($selectColumns, $model->{$relationName}()->getLocalKeyName()); | ||
| } | ||
| } elseif (ASTHelper::hasDirective($fieldDefinition, 'belongsTo')) { | ||
| // append relationship foreign key | ||
| $directive = ASTHelper::directiveDefinition($fieldDefinition, 'belongsTo'); | ||
|
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| if ($directive) { | ||
| $relationName = ASTHelper::directiveArgValue($directive, 'relation', $name); | ||
| array_push($selectColumns, $model->{$relationName}()->getForeignKeyName()); | ||
| } | ||
| } elseif (ASTHelper::hasDirective($fieldDefinition, 'belongsToMany')) { | ||
| // append relationship foreign key | ||
| $directive = ASTHelper::directiveDefinition($fieldDefinition, 'belongsToMany'); | ||
|
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| if ($directive) { | ||
| $relationName = ASTHelper::directiveArgValue($directive, 'relation', $name); | ||
| array_push($selectColumns, $model->{$relationName}()->getForeignKeyName()); | ||
| } | ||
| } else { | ||
| // fallback to selecting the field name | ||
| array_push($selectColumns, $name); | ||
| } | ||
| } | ||
| } | ||
|
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| return array_unique($selectColumns); | ||
| } | ||
| } |
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