hasMany 关系：包括从另一个方向

Question

假设我有下一个模型：

user.json:
{//...
    "relations":{
        "invoices": {
            "type": "hasMany",
            "model": "Invoice",
            "foreignKey": "receiverId"
        },
    }
//...
}

A.k.a。一个用户可能有很多发票。此代码将字段 receiverId 添加到发票模型。

现在我想获取包括收款人在内的发票清单。我该怎么做？

Invoice.find({include: "reciever"})

或者

Invoice.find({include: "user"})

没用，返回："Relation \"receiver\" is not defined for Invoice model" 错误。

感谢您的帮助。

Answer 1

您必须在发票模型中定义 belongsTo 关系。

invoice.json:

{//...
    "relations":{
        "receiver": {
            "type": "belongsTo",
            "model": "Receiver"
        },
    }
//...
}

然后你可以这样查询你的模型：

Invoice.find({include: "receiver"}, function(data){ 
   console.log(data);
});

hasMany 关系：包括从另一个方向

hasMany relation: including from the other direction

loopback

node.js

strongloop