<?php namespace Illuminate\Database\Eloquent\Factories; use Illuminate\Database\Eloquent\Model; use Illuminate\Support\Collection; class BelongsToManyRelationship { /** * The related factory instance. * * @var \Illuminate\Database\Eloquent\Factories\Factory|\Illuminate\Support\Collection|\Illuminate\Database\Eloquent\Model */ protected $factory; /** * The pivot attributes / attribute resolver. * * @var callable|array */ protected $pivot; /** * The relationship name. * * @var string */ protected $relationship; /** * Create a new attached relationship definition. * * @param \Illuminate\Database\Eloquent\Factories\Factory|\Illuminate\Support\Collection|\Illuminate\Database\Eloquent\Model $factory * @param callable|array $pivot * @param string $relationship * @return void */ public function __construct($factory, $pivot, $relationship) { $this->factory = $factory; $this->pivot = $pivot; $this->relationship = $relationship; } /** * Create the attached relationship for the given model. * * @param \Illuminate\Database\Eloquent\Model $model * @return void */ public function createFor(Model $model) { Collection::wrap($this->factory instanceof Factory ? $this->factory->create([], $model) : $this->factory)->each(function ($attachable) use ($model) { $model->{$this->relationship}()->attach( $attachable, is_callable($this->pivot) ? call_user_func($this->pivot, $model) : $this->pivot ); }); } }