An impractical use for mass assignments in Laravel.

Repository.php

<?php

class Repository
{

	/**
	 * Mass assignment based on fillable, hidden, and guarded attributes
	 *
	 * @param obj $model
	 * @param arr $insertArray
	 * @return obj
	 */
	protected function mapInserts($model, $insertArray)
	{
		$fields = array_unique(
			array_merge($model->getFillable(), $model->getHidden(), $model->getGuarded())
		);

		foreach($insertArray as $key => $val)
		{
			if ( in_array($key, $fields) ) {
				$model->{$key} = $val;
			}
		}

		return $model;
	}

}

Example usage

$user = $this->mapInserts(new User, $data)->save();
/* or */
$user $this->mapInserts($this->userModel, $data)->save(); // assuming we've injected the user model