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<?php
namespace Illuminate\Database\Eloquent\Factories;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\MorphTo;
class BelongsToRelationship
{
/**
* The related factory instance.
*
* @var \Illuminate\Database\Eloquent\Factories\Factory|\Illuminate\Database\Eloquent\Model
*/
protected $factory;
/**
* The relationship name.
*
* @var string
*/
protected $relationship;
/**
* The cached, resolved parent instance ID.
*
* @var mixed
*/
protected $resolved;
/**
* Create a new "belongs to" relationship definition.
*
* @param \Illuminate\Database\Eloquent\Factories\Factory|\Illuminate\Database\Eloquent\Model $factory
* @param string $relationship
* @return void
*/
public function __construct($factory, $relationship)
{
$this->factory = $factory;
$this->relationship = $relationship;
}
/**
* Get the parent model attributes and resolvers for the given child model.
*
* @param \Illuminate\Database\Eloquent\Model $model
* @return array
*/
public function attributesFor(Model $model)
{
$relationship = $model->{$this->relationship}();
return $relationship instanceof MorphTo ? [
$relationship->getMorphType() => $this->factory instanceof Factory ? $this->factory->newModel()->getMorphClass() : $this->factory->getMorphClass(),
$relationship->getForeignKeyName() => $this->resolver($relationship->getOwnerKeyName()),
] : [
$relationship->getForeignKeyName() => $this->resolver($relationship->getOwnerKeyName()),
];
}
/**
* Get the deferred resolver for this relationship's parent ID.
*
* @param string|null $key
* @return \Closure
*/
protected function resolver($key)
{
return function () use ($key) {
if (! $this->resolved) {
$instance = $this->factory instanceof Factory
? ($this->factory->getRandomRecycledModel($this->factory->modelName()) ?? $this->factory->create())
: $this->factory;
return $this->resolved = $key ? $instance->{$key} : $instance->getKey();
}
return $this->resolved;
};
}
/**
* Specify the model instances to always use when creating relationships.
*
* @param \Illuminate\Support\Collection $recycle
* @return $this
*/
public function recycle($recycle)
{
if ($this->factory instanceof Factory) {
$this->factory = $this->factory->recycle($recycle);
}
return $this;
}
}
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