Laravel hasManyThrough什么也不回

Question

我第一次尝试使用hasManyThrough关系。但是，当我试图调用该方法时，它什么也不返回。

这是我的数据库：

User:
- id
- (...)

Shipment:
- id
- users_id
- (...)

Shipment_question:
- id
- shipment_id
- (...)

这是我模特的密码。

用户：

public function Shipment()
{
    return $this->hasMany('Shipment','users_id');
}

public function Shipment_question(){
    return $this->hasManyThrough('Shipment_question','Shipment','users_id','shipment_id');
}

装运：

public function User()
{
    return $this->belongsTo('User','users_id');
}

public function Shipment_question()
{
    return $this->hasMany('Shipment_question','shipment_id');
}

Shipment_question：

public function Shipment()
{
    return $this->belongsTo('Shipment','shipment_id');
}

下面是我们的号召：

Auth::User()->Shipment_question;

我使用barryvdh调试器来查看查询，shipment_question调用应该生成一个查询，但是在查询日志中只显示auth::user查询。

Answer 1

为了作为动态属性工作，关系必须是camelCased，因此重命名：

public function Shipment_question(){
    return $this->hasManyThrough('Shipment_question','Shipment','users_id','shipment_id');
}

//to
public function shipmentQuestion(){
    return $this->hasManyThrough('Shipment_question','Shipment','users_id','shipment_id');
}

然后你就可以称之为：

Auth::user()->simpmentQuestion;

否则，您可以使用它的唯一方法是将它直接作为方法调用：

Auth::User()->Shipment_question()->getResults();

// what gives the same result as dynamic property after fix:
Auth::User()->shipmentQuestion;

一般而言，使用camelCased StudlyCased方法和属性以及StudlyCased类的Laravel4+命名约定(如上面所示，或至少在其他情况下建议使用)。

因此，我建议将Shipment_question类重命名为ShipmentQuestion。