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<?php |
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declare(strict_types=1); |
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namespace Cycle\Schema\Relation; |
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use Cycle\ORM\Relation; |
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use Cycle\Schema\Definition\Entity; |
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use Cycle\Schema\Exception\RelationException; |
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use Cycle\Schema\InversableInterface; |
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use Cycle\Schema\Registry; |
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use Cycle\Schema\Relation\Traits\FieldTrait; |
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use Cycle\Schema\Relation\Traits\ForeignKeyTrait; |
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use Cycle\Schema\RelationInterface; |
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final class BelongsTo extends RelationSchema implements InversableInterface |
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{ |
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use FieldTrait; |
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use ForeignKeyTrait; |
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// internal relation type |
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protected const RELATION_TYPE = Relation::BELONGS_TO; |
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// relation schema options |
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protected const RELATION_SCHEMA = [ |
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// save with parent |
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Relation::CASCADE => true, |
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// do not pre-load relation by default |
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Relation::LOAD => Relation::LOAD_PROMISE, |
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// nullable by default |
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Relation::NULLABLE => false, |
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// link to parent entity primary key by default |
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Relation::INNER_KEY => '{relation}_{outerKey}', |
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// default field name for inner key |
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Relation::OUTER_KEY => '{target:primaryKey}', |
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// rendering options |
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RelationSchema::INDEX_CREATE => true, |
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RelationSchema::FK_CREATE => true, |
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RelationSchema::FK_ACTION => 'CASCADE', |
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RelationSchema::FK_ON_DELETE => null, |
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]; |
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public function compute(Registry $registry): void |
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{ |
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parent::compute($registry); |
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$source = $registry->getEntity($this->source); |
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$target = $registry->getEntity($this->target); |
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160 |
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$this->normalizeContextFields($source, $target); |
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// create target outer field |
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$this->createRelatedFields( |
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$target, |
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Relation::OUTER_KEY, |
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$source, |
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Relation::INNER_KEY, |
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); |
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} |
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public function render(Registry $registry): void |
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{ |
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$source = $registry->getEntity($this->source); |
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$target = $registry->getEntity($this->target); |
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$sourceTable = $registry->getTableSchema($source); |
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$innerFields = $this->getFields($source, Relation::INNER_KEY); |
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$outerFields = $this->getFields($target, Relation::OUTER_KEY); |
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if ($this->options->get(self::INDEX_CREATE) && $innerFields->count() > 0) { |
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$sourceTable->index($innerFields->getColumnNames()); |
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} |
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if ($this->options->get(self::FK_CREATE)) { |
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$this->createForeignCompositeKey( |
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$registry, |
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$target, |
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$source, |
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$outerFields, |
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$innerFields, |
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$this->options->get(self::INDEX_CREATE), |
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); |
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} |
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} |
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/** |
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* |
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* @return Entity[] |
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*/ |
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public function inverseTargets(Registry $registry): array |
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{ |
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return [ |
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$registry->getEntity($this->target), |
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]; |
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} |
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/** |
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* |
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* @throws RelationException |
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* |
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*/ |
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public function inverseRelation(RelationInterface $relation, string $into, ?int $load = null): RelationInterface |
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{ |
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if (!$relation instanceof HasOne && !$relation instanceof HasMany) { |
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throw new RelationException('BelongsTo relation can only be inversed into HasOne or HasMany'); |
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} |
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return $relation->withContext( |
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$into, |
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$this->target, |
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$this->source, |
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$this->options->withOptions([ |
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Relation::LOAD => $load, |
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Relation::INNER_KEY => $this->options->get(Relation::OUTER_KEY), |
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Relation::OUTER_KEY => $this->options->get(Relation::INNER_KEY), |
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]), |
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); |
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} |
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} |
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cycle /
schema-builder
