Question

我第一次尝试使用hasManyThrough关系。但是当我尝试调用该方法时，它什么都不返回。

这是我的数据库：

User:
- id
- (...)

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

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

这是我的模型代码。

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');
}

配送费：

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');
}

这是电话：

Auth::User()->Shipment_question;

我使用barryvdh调试栏查看查询，cargo_question调用应生成查询，但在查询日志中只显示auth :: user查询。

Answer 1

为了作为动态属性，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');
}

然后你就可以打电话了：

Auth::user()->simpmentQuestion;

否则你可以使用它的唯一方法就是直接调用它作为一种方法：

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

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

一般情况下，Laravel4 +命名约定使用camelCased方法和属性以及StudlyCased类强制（如上所述，或至少建议其他情况）。

因此，我建议您将Shipment_question课程重命名为ShipmentQuestion。

Laravel hasManyThrough什么都不返回

1 个答案: