pivot表中多个3模型的laravel雄辩关系问题

我有一个有好几种型号的箱子。订单模型、产品模型、港口模型和物流模型。 如果

订单属于许多产品

，

订单属于具有“收件人端口id”的端口

，

订单属于具有“物流id”的物流

，

产品属于具有“发件人端口id”的端口

从港口id到港口id、物流id和单价

与数据透视表结合使用

现在我想问一下。如何从\u port\u id、to\u port\u id、logistic\u id检索具有相应

的不同产品的订单，以尽可能少的sql获得不同的单价

订单模式

+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+-----------+----------------+------+-----+---------+----------------+
| id           | int(11)     | NO   | PRI | NULL    | auto_increment |
| to_port_id   | int(11)     | NO   |     | NULL    |                |
| logistic_id  | int(11)     | NO   |     | NULL    |                |
+--------------+-------------+------+-----+---------+----------------+

+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+-----------+----------------+------+-----+---------+----------------+
| id           | int(11)     | NO   | PRI | NULL    | auto_increment |
| from_port_id | int(11)     | NO   |     | NULL    |                |
+--------------+-------------+------+-----+---------+----------------+

+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+--------------+-------------+------+-----+---------+----------------+
| from_port_id | int(11)     | NO   | PRI | NULL    |                |
| to_port_id   | int(11)     | NO   | PRI | NULL    |                |
| logistic_id  | int(11)     | NO   | PRI | NULL    |                |
| unit_price   | decimal(11) | NO   |     | NULL    |                |
+--------------+-------------+------+-----+---------+----------------+

产品型号

+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+-----------+----------------+------+-----+---------+----------------+
| id           | int(11)     | NO   | PRI | NULL    | auto_increment |
| to_port_id   | int(11)     | NO   |     | NULL    |                |
| logistic_id  | int(11)     | NO   |     | NULL    |                |
+--------------+-------------+------+-----+---------+----------------+

+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+-----------+----------------+------+-----+---------+----------------+
| id           | int(11)     | NO   | PRI | NULL    | auto_increment |
| from_port_id | int(11)     | NO   |     | NULL    |                |
+--------------+-------------+------+-----+---------+----------------+

+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+--------------+-------------+------+-----+---------+----------------+
| from_port_id | int(11)     | NO   | PRI | NULL    |                |
| to_port_id   | int(11)     | NO   | PRI | NULL    |                |
| logistic_id  | int(11)     | NO   | PRI | NULL    |                |
| unit_price   | decimal(11) | NO   |     | NULL    |                |
+--------------+-------------+------+-----+---------+----------------+

物流港数据透视模型

+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+-----------+----------------+------+-----+---------+----------------+
| id           | int(11)     | NO   | PRI | NULL    | auto_increment |
| to_port_id   | int(11)     | NO   |     | NULL    |                |
| logistic_id  | int(11)     | NO   |     | NULL    |                |
+--------------+-------------+------+-----+---------+----------------+

+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+-----------+----------------+------+-----+---------+----------------+
| id           | int(11)     | NO   | PRI | NULL    | auto_increment |
| from_port_id | int(11)     | NO   |     | NULL    |                |
+--------------+-------------+------+-----+---------+----------------+

+--------------+-------------+------+-----+---------+----------------+
| Field        | Type        | Null | Key | Default | Extra          |
+--------------+-------------+------+-----+---------+----------------+
| from_port_id | int(11)     | NO   | PRI | NULL    |                |
| to_port_id   | int(11)     | NO   | PRI | NULL    |                |
| logistic_id  | int(11)     | NO   | PRI | NULL    |                |
| unit_price   | decimal(11) | NO   |     | NULL    |                |
+--------------+-------------+------+-----+---------+----------------+

----------更新-------------------------

    class Product extends Model
{

    protected $table = 'product';





        /*
    |--------------------------------------------------------------------------
    | RELATIONS
    |--------------------------------------------------------------------------
    */
    public function orderTransact(){
        return $this->belongsToMany('App\Models\OrderTransact','order_transact_product','product_id','order_transact_id')->withPivot(['unique_order_product_id','order_quantity_in_log','order_product_status_id ','confirmed_delivery_date','expected_ETD','due_at','downpayment','deposit','total','feedback','created_at','updated_at','tracking_no','weight','logistic_cost'])->using('App\Models\OrderTransactProduct')->as('order_product');
    }


    public function orderProduct(){
        return $this->hasMany('App\Models\OrderTransactProduct','product_id','id');
    }


    public function fromLogisticPort(){
        return $this->belongsTo('App\Models\LogisticPort','from_port_id','id');
    }




}

    class LogisticPort extends Model
{
    use HasFactory;
    protected $table = 'logistic_port';
    


    public function logisticFrom(){
        return $this->belongsToMany('App\Models\Logistic','logistic_port_logistic','from_port_id','logistic_id')->withPivot(['to_port_id','courier_charges_unit'])->using('App\Models\LogisticPortLogistic');
    }
    public function logisticTo()
    {
        return $this->belongsToMany('App\Models\Logistic','logistic_port_logistic','to_port_id','logistic_id')->withPivot(['from_port_id','courier_charges_unit'])->using('App\Models\LogisticPortLogistic');
    }

    public function logisticPortFrom(){
        return $this->belongsToMany('App\Models\LogisticPort','logistic_port_logistic','to_port_id','from_port_id')->withPivot(['logistic_id','courier_charges_unit'])->using('App\Models\LogisticPortLogistic');
    }
    public function logisticPortTo(){
        return $this->belongsToMany('App\Models\LogisticPort','logistic_port_logistic','from_port_id','to_port_id')->withPivot(['logistic_id','courier_charges_unit'])->using('App\Models\LogisticPortLogistic');
    }


    public function toPivotLogisticPort(){
        return $this->hasMany('App\Models\LogisticPortLogistic','to_port_id','id');
    }

    public function product(){
        return $this->hasMany('App\Models\Product','from_port_id','id');
    }

    public function orderTransact(){
        return $this->hasMany('App\Models\OrderTransact','from_port_id','id');
    }


}



    class Logistic extends Model
{

    protected $table = 'logistic';


    public function orderTransact(){
        return $this->hasMany('App\Models\OrderTransact','order_transact_id','id');
    }
    public function logisticPortFrom(){
        return $this->belongsToMany('App\Models\LogisticPort','logistic_port_logistic','logistic_id','from_port_id')->withPivot(['to_port_id','courier_charges_unit'])->using('App\Models\LogisticPortLogistic');

    }
    public function logisticPortTo(){
        return $this->belongsToMany('App\Models\LogisticPort','logistic_port_logistic','logistic_id','to_port_id')->withPivot(['from_port_id','courier_charges_unit'])->using('App\Models\LogisticPortLogistic');
    }

}



    class OrderTransact extends Model
{
    use HasFactory;
    use SoftDeletes;
    protected $table = 'order_transact';

            /*
    |--------------------------------------------------------------------------
    | RELATIONS
    |--------------------------------------------------------------------------
    */

    public function logistic(){
        return $this->belongsTo('App\Models\Logistic','logistic_id','id');
    }



    public function product(){
        return $this->belongsToMany('App\Models\Product','order_transact_product','order_transact_id','product_id')->withPivot(['unique_order_product_id','order_quantity_in_log','order_product_status_id','confirmed_delivery_date','expected_ETD','due_at','downpayment','deposit','total','feedback','created_at','updated_at','tracking_no','weight','logistic_cost'])->using('App\Models\OrderTransactProduct')->as('order_product');
    }

    public function orderProduct(){
        return $this->hasMany('App\Models\OrderTransactProduct','order_transact_id','id');
    }

    public function toLogisticPort(){
        return $this->belongsTo('App\Models\LogisticPort','to_port_id','id');
    }
}

到目前为止你尝试了什么？我不知道如何更新你的所有关系模型，我不知道你在项目中使用的关系名称，所以很难为你编写代码。。因此，请更新模型，我认为您应该为您的案例应用形态学关系，而不是使用3个表的多对多关系。事实上，对于两个以上模型可以相互关联的场景，引入了形态学关系。