Question

我有我的用户架构：

const userSchema = new Schema({
  name: { type: String, required: true },
  email: { type: String, required: true },
  password: { type: String, required: true },
  date: { type: Date, default: Date.now },
  active: { type: Boolean, default: false }
});

我想创建一个请假状态架构。只有一位用户可以提供所有请假状态的数据。我想将每个休假状态与相应的用户架构ID关联。我尝试了如下的离开状态架构：

const leaveSchema = new Schema({
  leave: [
    {
      email: { type: String, required: true },
      month: { type: String, required: true },
      year: { type: Number, required: true },
      earnedleave: { type: Number },
      sickleave: { type: Number },
      festivalleave: { type: Number },
      compoff: { type: Number }
    }
  ]
});

我如何将我的emailid与userschema相关联。有可能吗如果是这样，我该如何调整？

Answer 1

我们无需关联架构即可基于leave获取user，您可以为此使用聚合，

db.user.aggregate([
    ...
    {$lookup: {from: "leave", localField: "email", foreignField: "leave.email", as: "leaves"}},
    ...
]);

还是，如果您想关联两个集合，则必须使用ref和ObjectId

const leaveSchema = new Schema({
  leave: [
    {
      user: { type: Schema.Types.ObjectId, ref: 'user' }, //Your model name as reference
      email: { type: String, required: true },
      month: { type: String, required: true },
      year: { type: Number, required: true },
      earnedleave: { type: Number },
      sickleave: { type: Number },
      festivalleave: { type: Number },
      compoff: { type: Number }
    }
  ]
});

将一个架构与另一个架构相关联

1 个答案: