Seed many to many relationship
public function run()
{
DB::statement('SET FOREIGN_KEY_CHECKS=0;');
DB::table('user_account')->truncate();
$users = \App\User::all();
$account_ids = \DB::table('accounts')->select('id')->lists('id');
foreach($users as $user) {
$user->accounts()->sync(array_rand($account_ids,2));
}
DB::statement('SET FOREIGN_KEY_CHECKS=1;');
}