Laravel 属于 To 关系 - 尝试获取非对象的属性

php laravel eloquent laravel-5 laravel-eloquent

2022-08-31 00:58:49

用户.php

class User extends Authenticatable
{
    public function company() {
        return $this->belongsTo('App\Company');
    }
}

class Company extends Model
{
    public function users() {
        return $this->hasMany('App\User');
    }
}

标识名称companies_id

标识名称

我正在尝试将公司名称附加到用户。

$user = User::findOrFail(Auth::user()->id);
$companyName = $user->company()->first()->name;

我收到此错误消息Trying to get property of non-object

我不明白我错过了什么...提前感谢您

答案 1

默认情况下，Eloquent 采用关系的名称 + “_id” 来猜测外键。

public function company() {
    return $this->belongsTo('App\Company', 'companies_id')
}

public function companies() {
    return $this->belongsTo('App\Company')
}

答案 2

此外，您的company_id字段也可能为空

因此，您必须在循环中检查您的字段

f.e

foreach($users as $user) 
{
   if(isset($user->company->title)): 

     echo  $user->company->title;
   else:

     echo 'empty';
   endif;

}