Laravel获取非对象的属性 [英] Laravel get property of non object

问题描述

当我尝试确定某个对象是否为空时，它会告诉我:

When I try to determine if an object is empty it's telling me:

试图获取非对象的属性

Trying to get property of non-object

我正在这样做:

 $lastTicket = Auth::user()->ticket->last()->ticketid;
    if($lastTicket->isEmpty())
    {
        $lastTicket = 0;
    }

显然是Auth :: user()-> ticket-> last();还没有记录.我应该怎么做?我正在与Laravel合作.

Obviously Auth::user()->ticket->last(); isn't a record yet. How should I do this? I'm working with Laravel.

推荐答案

在获取属性之前，您需要检查集合是否为空:

You need to check that collection not empty before get the property:

    if(Auth::user()->ticket->last()->isEmpty())
    {
       $lastTicket = 0;
    }
    else
    {
        $lastTicket = Auth::user()->ticket->last()->lastId;
    }

简而言之:

$lastTicket = !Auth::user()->ticket->last()->isEmpty() ? $lastTicket = Auth::user()->ticket->last()->lastId : 0;

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