Question

我正在尝试获取特定的列数据，并通过if语句运行它来检查状态是否得到确认，但出现“尝试获取非对象的属性'status'状态”错误

这是我的控制者；

public function transaction(Request $request){
        request()->validate([
            'amount' => 'required'
        ]);
        $trans = Transaction::where('user_id', Auth::user()->id)->orderBy('id', 'desc')->first();
        if(Auth::user()->transaction && !$trans->status){
            return redirect()->back()->with("error", "You currently have a withdrawal request pending confirmation");
        }
        if($request->input('amount') > Auth::user()->balance){
            return redirect()->back()->with("error", "Insufficient balance to complete request");
        }
        Mail::to('mail@gmail.com')->send(new transaction($request));

        $transaction->save();
        return redirect()->back()->with("success", "Your withdrawal request has successfully been received");


    }

我的交易模型；

namespace App;

use Illuminate\Database\Eloquent\Model;

class Transaction extends Model
{
    protected $guarded = [];

    public function user(){

        return $this->belongsTo('App\User');

    }
}

Answer 1

首先，您需要检查记录是否存在。在访问对象的status属性之前，请使用以下代码，并确认您已从数据库接收数据。

if(!$trans) {
    return abort(404); // record does not exists
}

错误的原因是查询未返回数据。 $ trans变量包含空值，这就是您收到错误试图获取非对象的属性“状态”的原因。

Answer 2

您应该检查$ trans对象是否存在。将您的代码更改为此：

 if(empty($trans) || (Auth::user()->transaction && !$trans->status)) {
        return redirect()->back()->with("error", "You currently have a withdrawal request pending confirmation");
    }

Answer 3

此行之后 $trans = Transaction::where('user_id', Auth::user()->id)->orderBy('id', 'desc')->first(); 检查这个 `if（$ trans ==''|| $ trans == null）{ 返回redirect（）-> back（）-> with（“错误”，“没有可用的跨栏”）; }

尝试获取对象属性，但我得到“试图获取非对象的属性'状态'”

3 个答案: