如何将碳转换为字符串，仅取日期？

Question

i have an collection like this

0 => array:4 [
  "so" => "SO-1"
  "product_name" => "EXTREME FORTE - BP"
  "created_at" => Carbon @1527481346 {#628
    date: 2018-05-28 04:22:26.0 UTC (+00:00)
  }
  "id" => "5b0b84027475aa1508002623"
]

how to take the "2018-05-28" only? can somebody help me to fix this problem? thank's anyway

Answer 1

$collection_item->created_at->format('Y-m-d');

Answer 2

i prefere this

$model_item->created_at->toDateString();

since all date fields that located in protected $dates array in the modal is type of \\Carbon\\Carbon .

so the above code could apply to any date field as long as you declared it as date in $dates array in the modal as follow

// this includes created_at and updated_at by default so no need to add it 
protected $dates = ['approved', 'seen_at'];

Answer 3

It is also possible to add automatic casting to your model, for example :

protected $casts = [
    'created_at' => 'date:Y-m-d',
    'updated_at' => 'datetime:Y-m-d H:00',
];

Remark : your mileage may vary depending on your Laravel version

https://laravel.com/docs/8.x/eloquent-mutators#date-casting

https://laravel.com/docs/8.x/eloquent-serialization#date-serialization