找不到文字月份，追踪数据Carbon-laravel [英] A textual month could not be found ,Trailing data Carbon - laravel

问题描述

我确实尝试了不同的方法，但是我没有获得正确的时间格式.

$news->created_at = Carbon::parse($news->created_at)->format('M, d, Y');

$news->created_at = date('d M Y',strtotime($news->created_at))

$news->created_at = date('d M Y',$news->created_at)

$news->created_at = Carbon::createFromFormat("d M Y",strtotime($news->created_at));

$news->created_at = $news->created_at->format('M, d, Y');

错误是

找到意外数据
找不到分隔符号
InvalidArgumentException

Carbon.php: 910

dd($ news-> created_at);

Carbon @1550035143 {#361 ▼
  date: 2019-02-13 05:19:03.0 UTC (+00:00)
}

解决方案

在您的$news->created_at字段中已经有一个Carbon实例，因为雄辩的模型考虑了 format 方法

 $news->created_at->format('d M Y');
 

但是，当您尝试在模型实例上将字符串重新分配为created_at的值时，它与Laravel的内部增变器发生冲突，后者试图将分配给日期字段的任何值从Carbon实例转换为字符串. /p>

您可以在News模型中设置public $timestamps = false;，然后在处理模型时间戳时在整个应用程序中使用字符串，但这似乎是一种破解，而不是解决方案，因为您将放弃所有的好处碳优惠.

您还可以通过在序列化时处理时间戳来完成此操作，如下所示:

 return collect($news->makeHidden(['created_at']))->merge([
    'created_at' => $news->created_at->format('d M Y')
]);
 

上面的代码将隐藏序列化过程中传递给makeHidden的列.然后，您可以将隐藏列的格式化值合并到响应中.

I did try different ways, but I have not get the proper time format.

$news->created_at = Carbon::parse($news->created_at)->format('M, d, Y');

$news->created_at = date('d M Y',strtotime($news->created_at))

$news->created_at = date('d M Y',$news->created_at)

$news->created_at = Carbon::createFromFormat("d M Y",strtotime($news->created_at));

$news->created_at = $news->created_at->format('M, d, Y');

And the errors are,

Unexpected data found
The separation symbol could not be found
InvalidArgumentException

Carbon.php: 910

dd($news->created_at);

Carbon @1550035143 {#361 ▼
  date: 2019-02-13 05:19:03.0 UTC (+00:00)
}

解决方案

You already have a Carbon instance in your $news->created_at field, because Eloquent models consider the created_at and updated_at columns as timestamps by default and automatically convert them to Carbon instances. So you just need to use the format method from Carbon:

$news->created_at->format('d M Y');

However, when you try to reassign a string as the value of created_at on the model instance, it conflicts with Laravel's internal mutator that tries to convert any value assigned to a date field from a Carbon instance into a string.

You could set public $timestamps = false; in your News model and then use strings throughout your app when handling model timestamps, but that seems like a hack more than a solution, because you'd be giving up on all the benefits that Carbon offers.

You also could also do this by handling timestamps at serialization time, something like this:

return collect($news->makeHidden(['created_at']))->merge([
    'created_at' => $news->created_at->format('d M Y')
]);

The above code will hide the columns passed to makeHidden from the serialization process. Then you could merge the formatted values for the hidden columns into your response.

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