php 将字符串转换为碳
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Convert String to Carbon
提问by smartrahat
I am using Laravel 5.1
我正在使用 Laravel 5.1
Few days ago I used protected $dates = ['license_expire']in my model to convert the string date to Carbon instances. In HTML the default value in create form for the date was Carbon\Carbon::now()->format('Y-m-d')
几天前，我protected $dates = ['license_expire']在我的模型中使用将字符串日期转换为 Carbon 实例。在 HTML 中，日期的创建表单中的默认值是Carbon\Carbon::now()->format('Y-m-d')
In order to show alert in home page i used <p>Licence Expired: <b>{{ $employee->license_expire < Carbon\Carbon::now()?'License has expired':$employee->license_expire->diffForHumans() }}</b></p>
为了在主页中显示警报，我使用了 <p>Licence Expired: <b>{{ $employee->license_expire < Carbon\Carbon::now()?'License has expired':$employee->license_expire->diffForHumans() }}</b></p>
Till then diffForHumans() method works fine.
直到那时 diffForHumans() 方法工作正常。
But in that case the edit form's default value also was today's date no matter what was in database(I am using a partial form). To resolve it I change the default value in HTML was NUll. And add another method in my model to show current date in create form.
但在那种情况下，无论数据库中有什么，编辑表单的默认值也是今天的日期（我使用的是部分表单）。为了解决它，我将 HTML 中的默认值更改为 NULL。并在我的模型中添加另一种方法以在创建表单中显示当前日期。
public function getLicenseExpireAttribute($date)
{
return Carbon::parse($date)->format('Y-m-d');
}
After that when i go to home page i have an FatalErrorExceptionwhich says Call to a member function diffForHumans() on string
之后，当我进入主页时，我有一个FatalErrorException说Call to a member function diffForHumans() on string
When I check the date with dd($employee->license_expire)it become STRING again.
当我用dd($employee->license_expire)它检查日期时，它又变成了 STRING。
Can anybody tell me how can I convert the string to Carbon in this situation?
谁能告诉我在这种情况下如何将字符串转换为碳？
or
或者
Make my create form's default date as today's date, the edit form's date from database and I can use diffForHumans() to show alert in home page?
将我的创建表单的默认日期设为今天的日期，从数据库中编辑表单的日期，我可以使用 diffForHumans() 在主页中显示警报吗？
回答by Rwd
You were almost there.
你快到了。
Remove protected $dates = ['license_expire']
消除 protected $dates = ['license_expire']
and then change your LicenseExpireaccessor to:
然后将您的LicenseExpire访问器更改为：
public function getLicenseExpireAttribute($date)
{
return Carbon::parse($date);
}
This way it will return a Carboninstance no matter what.
So for your form you would just have $employee->license_expire->format('Y-m-d')(or whatever format is required) and diffForHumans()should work on your home page as well.
这样它无论如何都会返回一个Carbon实例。因此，对于您的表单，您将拥有$employee->license_expire->format('Y-m-d')（或所需的任何格式）并且也diffForHumans()应该在您的主页上工作。
Hope this helps!
希望这可以帮助！
回答by mgilberties
Why not try using the following:
为什么不尝试使用以下方法：
$dateTimeString = $aDateString." ".$aTimeString;
$dueDateTime = Carbon::createFromFormat('Y-m-d H:i:s', $dateTimeString, 'Europe/London');
回答by li bing zhao
Try this
尝试这个
$date = Carbon::parse(date_format($youttimestring,'d/m/Y H:i:s'));
echo $date;
