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<?php |
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namespace DNADesign\Elemental\GraphQL; |
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use DNADesign\Elemental\Models\BaseElement; |
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use DNADesign\Elemental\Services\ReorderElements; |
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use GraphQL\Type\Definition\ResolveInfo; |
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use GraphQL\Type\Definition\Type; |
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use SilverStripe\Core\Convert; |
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use SilverStripe\Core\Injector\Injector; |
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use SilverStripe\GraphQL\MutationCreator; |
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use SilverStripe\GraphQL\OperationResolver; |
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use SilverStripe\GraphQL\Scaffolding\StaticSchema; |
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use SilverStripe\ORM\DataObject; |
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use SilverStripe\ORM\Queries\SQLUpdate; |
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/** |
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* Given a source block ID and the ID of the block to reorder the source block after, update all affected sort |
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* orders for the block and its siblings. Only the source block will have a new version written, all siblings |
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* will be updated underneath the ORM to avoid this. |
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*/ |
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class SortBlockMutationCreator extends MutationCreator implements OperationResolver |
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{ |
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public function attributes() |
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{ |
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return [ |
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'name' => 'sortBlock', |
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'description' => 'Changes the sort position of an element' |
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]; |
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} |
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public function type() |
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{ |
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return $this->manager->getType(StaticSchema::inst()->typeNameForDataObject(BaseElement::class)); |
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} |
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public function args() |
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{ |
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return [ |
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'ID' => ['type' => Type::nonNull(Type::id())], |
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'AfterBlockID' => ['type' => Type::nonNull(Type::id())], |
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]; |
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} |
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public function resolve($object, array $args, $context, ResolveInfo $info) |
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{ |
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$element = BaseElement::get()->byID($args['ID']); |
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if (!$element) { |
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throw new InvalidArgumentException(sprintf( |
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'%s#%s not found', |
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BaseElement::class, |
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$args['ID'] |
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)); |
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} |
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if (!$element->canEdit($context['currentUser'])) { |
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throw new InvalidArgumentException( |
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'Changing the sort order of blocks is not allowed for the current user' |
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); |
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} |
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$reorderingService = Injector::inst()->create(ReorderElements::class, $element); |
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return $reorderingService->reorder($args['AfterBlockID']); |
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} |
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} |
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