雄辩 - > first（）如果 - > exists（）(Eloquent ->first() if ->exists())

 我想获得条件匹配的表中的第一行： 
 
User::where('mobile', Input::get('mobile'))->first()
 
 它运作良好，但如果条件不匹配，则会抛出异常： 
 
ErrorException
Trying to get property of non-object
 
 目前我解决它是这样的： 
 
if (User::where('mobile', Input::get('mobile'))->exists()) {
    $user = User::where('mobile', Input::get('mobile'))->first()
}
 
 我可以做到这一点，而无需运行两个查询 

I want to get the first row in table where condition matches:
 
User::where('mobile', Input::get('mobile'))->first()
 
It works well, but if the condition doesn't match, it throws an Exception:
 
ErrorException
Trying to get property of non-object
 
Currently I resolve it like this:
 
if (User::where('mobile', Input::get('mobile'))->exists()) {
    $user = User::where('mobile', Input::get('mobile'))->first()
}
 
Can I do this without running two queries?

原文：https://stackoverflow.com/questions/24531312