php - Why does laravel get an error when assigning a value to created_at or updated_time in the controller?

Question

HTML:

Controller:

Page error:

Then, I just need to redefine a variable, like this
Controller:

So, I don’t understand why laravel makes an error when assigning created_at or updated_time in the controller.
Help Me!

Answer 1

The system classifies created_at、updated_at、deleted_at字段格式化为了CarbonCarbon.

// 例子
$posts->created_at->timestamp;  // 时间戳
$posts->created_at->format('Y-m-d H:i:s');  // 返回指定格式
// Carbon支持很多操作

About CarbonCarbon的了解，可访问官网：http://carbon.nesbot.com/ （绝对推荐使用)

Answer 2

Please post the complete code.

Answer 3

要用Carbon
$post->updated_time = Carbon::now();
$post->updated_time = Carbon::parse('2017-01-01');
$post->updated_time = Carbon::createFromTimestamp(1491747387);