Laravel 错误：在字符串上调用成员函数 format()

Question

I am using Laravel 5.3 .

There is a field expired_at in table articles ：

public function store(Request $request)
{
    $data=[
         'expired_at'=>Carbon::now()->addDays(30)->endOfDay()
    ];
    $article=Article::create(array_merge($request->all(),$data));

    return redirect('/artilces');
}

view:

{{$article->expired_at->format('Y-m-d')}}

error:

Call to a member function format() on string (View: D:\\wnmp\\www\\laravel-5-3-dev\\resources\\views\\artiles\\index.blade.php)

Why is it？

Answer 1

In your Article class add following property:

/**
 * The attributes that should be mutated to dates.
 *
 * @var array
 */
protected $dates = ['expired_at'];

Docs

Answer 2

I think this is the way. It will not throw error

{{ Carbon\Carbon::parse($article->expired_at)->format('Y-m-d') }}

Answer 3

If you use DB:: to retrieve complex data, you can´t use mutators. In this situation I use this:

{{ date('m-Y', strtotime($hora->Fecha)) }}

Or

{{ date('m-Y', strtotime($hora ?? ''->Fecha)) }}

Where "Fecha" is a datetime value.

Answer 4

With, the field declared on $dates of your model.

Try this:

optional($article->expired_at)->format('Y-m-d')