laravel 批量赋值 报错 Array to string conversion

Question

$create = [
            'title' => $data['title'],
            'describes' => $data['introduce'],
            'promotions_detail' => json_encode([
                'type' => $data['discount_type'],
                'point' => $data['discount']
            ]),
            'time_limit' => $data['deadline'],
            'extend' => json_encode($data),
            'status' => 1
        ];
        $res = Coupon::create($create);

通过这样写入数据库会报错，请问什么原因，php7.2的版本

Answer 1

你贴出来的这一块代码看起来好像没问题，报的是哪一行错误，data数据确保有没有错误，在确保这些没有错误的情况下还有一种写法：
$create['title'] = $data['title'];
$create['describes'] = $data['introduce'];
$res = Coupon::create($create);
或者写成$res = Coupon::insert($create);

Answer 2

是不是没有加白名单

Answer 3