Laravel 的所属关系 - 试图获取非对象的属性
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/43264960/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Laravel belongsTo relationship - Trying to get property of non-object
提问by Léo Coco
User.php
用户名.php
class User extends Authenticatable
{
public function company() {
return $this->belongsTo('App\Company');
}
}
Company.php
公司.php
class Company extends Model
{
public function users() {
return $this->hasMany('App\User');
}
}
Table users
表用户
id name companies_id
id 名称 company_id
Table companies
表公司
id name
身名称
I'm trying to get the name of the company attached to the user.
我正在尝试获取附加到用户的公司名称。
$user = User::findOrFail(Auth::user()->id);
$companyName = $user->company()->first()->name;
I got this error message Trying to get property of non-object
我收到此错误消息 Trying to get property of non-object
I don't get what I'm missing... Thank you in advance
我不明白我错过了什么......提前谢谢你
采纳答案by Léo Coco
By default, Eloquent is taking the name of the relationship + '_id' to guess the foreign key.
默认情况下，Eloquent 使用关系名称 + '_id' 来猜测外键。
Solution A
方案一
public function company() {
return $this->belongsTo('App\Company', 'companies_id')
}
Solution B
方案B
public function companies() {
return $this->belongsTo('App\Company')
}
回答by Turan Zamanl?
Also it may be null your company_id field
您的 company_id 字段也可能为空
That reason you must be check your field on the loop
这个原因你必须在循环中检查你的领域
f.e
铁
foreach($users as $user)
{
if(isset($user->company->title)):
echo $user->company->title;
else:
echo 'empty';
endif;
}
回答by brunohdaniel
Try it without the "first" method.
尝试不使用“第一个”方法。
$companyName = $user->company()->name;
