填充“Ref"使用 Graphql 时在猫鼬模式中 [英] Populating the "Ref" in mongoose schema while working with Graphql

问题描述

我正在使用 Graphql，然后我遇到了需要填充的情况，但我不知道如何执行.

I am working with Graphql and then I come to a situation where I need to populate, but I am not getting how to excute that.

这是我的预订模式

const mongoose=require('mongoose')
const Schema=mongoose.Schema
const bookingschema=new Schema({
event:{
    type:Schema.Types.ObjectId,
    ref:'Event'
},
user:{
    type:Schema.Types.ObjectId,
    ref:'User'
}
}
,{timestamps:true})
module.exports=mongoose.model('Booking',bookingschema)

这是我创建预订事件的解析器

Here is my resolver to create a booking event

 bookevent: async args => {
    const fetchevent = await Event.findOne({ _id: args.eventid });
    const booking = new Booking({
      user: "5d64354bfd7bb826a9331948",
      event: fetchevent
    });
    const result = await booking.save();
    return {
      ...result._doc,
      _id: result._id,
      createdAt: new Date(result._doc.createdAt).toISOString(),
      updatedAt: new Date(result._doc.updatedAt).toISOString()
    };
  }
};

当我尝试运行 graphql 查询时，我很容易得到我所需要的

When i try to run the graphql query i easily get what i require

mutation{
  bookevent(eventid:"5d6465b4ef2a79384654a5f9"){
    _id
  }
}

给我

{
  "data": {
    "bookevent": {
      "_id": "5d64672440b5f9387e8f7b8f"
    }
  }

但是现在我如何在这里填充用户???

but now how do I populate user here ???

因为最后我希望这个查询能够成功执行

cause at the end I want this query to be executed successfully

mutation{
  bookevent(eventid:"5d6465b4ef2a79384654a5f9"){
    _id
    user{
      email
    }
  }

事件类型的架构是

  type Event{
        _id:ID!
        title:String!
        description:String!
        price:Float!
        date:String!
        creator:User!
    }

因为我的用户架构中有电子邮件，我正在尝试将其发送出去

cause my user schema has email inside it and I am trying to reach that out

那么我应该在我的预订解析器中的哪个位置填充用户"???

So where in my Booking resolver should I populate "user" ??

解决我所做的用户

 const result = await booking.save();
    const res=await result.populate("user");
    console.log(res) //doesnt gives the populated user only gives me id

如果我对这些情况没有错 populate 是正确的方式吗?

If I am not wrong for these cases populate is the way right?

推荐答案

希望能帮到你.

const result = await booking.save();
const res=await booking.findById(result._id).populate("user");
console.log(res)

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