php - Controller 中的 if else 语句在 Laravel 中没有响应

Question

我试图通过在我的 Controller 中使用此方法来阻止登录用户访问某些段落异常，用户在 NextofKin 表中有他的信息

public function checkValidTenant($tenant_id){
    $check = NextOfKin::where('tenant_id', '=', $tenant_id)->findOrFail('tenant_id');
    return $check;
}

在显示该页面的方法中，我添加了以下代码进行限制

if($this->checkValidTenant(\Auth::user()->id)){
    $rents = RentDue::where('tenant_id', '=', \Auth::user()->id)->get();
    return view('/tenant/rent', compact('rents'));
}else{
    return redirect()->route('tenant/profile');
} 

我也这样试过

if($this->checkValidTenant(\Auth::user()->id) === true){
    $rents = RentDue::where('tenant_id', '=', \Auth::user()->id)->get();
    return view('/tenant/rent', compact('rents'));
}else{
    return redirect()->route('tenant/profile');
}

这是路线

Route::get('rent', 'TenantController@rent');

问题是当我尝试使用满足条件的登录用户访问页面时，它会抛出以下错误

Sorry, the page you are looking for could not be found. 

但是我注意到只有当我取消这个限制时这个页面才会显示。我该如何解决这个问题？

Answer 1

findOrFail 在找不到记录时将抛出 404。如果将该部分更改为 get 或 first，您可能会得到所需的结果。

public function checkValidTenant($tenant_id){
    $check = NextOfKin::where('tenant_id', '=', $tenant_id)->first();
    return $check;
}

Sometimes you may wish to throw an exception if a model is not found. This is particularly useful in routes or controllers. The findOrFail and firstOrFail methods will retrieve the first result of the query; however, if no result is found, a Illuminate\Database\Eloquent\ModelNotFoundException will be thrown.

Documentation (向下滚动到“未找到异常”部分)