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MorphOneOrMany.php
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<?php namespace Illuminate\Database\Eloquent\Relations; use Illuminate\Database\Eloquent\Model; use Illuminate\Database\Eloquent\Builder; abstract class MorphOneOrMany extends HasOneOrMany { /** * The foreign key type for the relationship. * * @var string */ protected $morphType; /** * The class name of the parent model. * * @var string */ protected $morphClass; /** * Create a new has many relationship instance. * * @param \Illuminate\Database\Eloquent\Builder $query * @param \Illuminate\Database\Eloquent\Model $parent * @param string $type * @param string $id * @param string $localKey * @return void */ public function __construct(Builder $query, Model $parent, $type, $id, $localKey) { $this->morphType = $type; $this->morphClass = $parent->getMorphClass(); parent::__construct($query, $parent, $id, $localKey); } /** * Set the base constraints on the relation query. * * @return void */ public function addConstraints() { if (static::$constraints) { parent::addConstraints(); $this->query->where($this->morphType, $this->morphClass); } } /** * Get the relationship count query. * * @param \Illuminate\Database\Eloquent\Builder $query * @param \Illuminate\Database\Eloquent\Builder $parent * @return \Illuminate\Database\Eloquent\Builder */ public function getRelationCountQuery(Builder $query, Builder $parent) { $query = parent::getRelationCountQuery($query, $parent); return $query->where($this->morphType, $this->morphClass); } /** * Set the constraints for an eager load of the relation. * * @param array $models * @return void */ public function addEagerConstraints(array $models) { parent::addEagerConstraints($models); $this->query->where($this->morphType, $this->morphClass); } /** * Attach a model instance to the parent model. * * @param \Illuminate\Database\Eloquent\Model $model * @return \Illuminate\Database\Eloquent\Model */ public function save(Model $model) { $model->setAttribute($this->getPlainMorphType(), $this->morphClass); return parent::save($model); } /** * Create a new instance of the related model. * * @param array $attributes * @return \Illuminate\Database\Eloquent\Model */ public function create(array $attributes) { $instance = $this->related->newInstance($attributes); // When saving a polymorphic relationship, we need to set not only the foreign // key, but also the foreign key type, which is typically the class name of // the parent model. This makes the polymorphic item unique in the table. $this->setForeignAttributesForCreate($instance); $instance->save(); return $instance; } /** * Set the foreign ID and type for creating a related model. * * @param \Illuminate\Database\Eloquent\Model $model * @return void */ protected function setForeignAttributesForCreate(Model $model) { $model->{$this->getPlainForeignKey()} = $this->getParentKey(); $model->{last(explode('.', $this->morphType))} = $this->morphClass; } /** * Get the foreign key "type" name. * * @return string */ public function getMorphType() { return $this->morphType; } /** * Get the plain morph type name without the table. * * @return string */ public function getPlainMorphType() { return last(explode('.', $this->morphType)); } /** * Get the class name of the parent model. * * @return string */ public function getMorphClass() { return $this->morphClass; } }
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