const friendSchema = new mongoose.Schema({
userID: String, //用户id
friend_list: Array,
group_list: {
A: [
{ "id": { type: mongoose.Schema.Types.ObjectId, ref: 'User' }, "nickName": String }
],
B: [
{ "id": { type: mongoose.Schema.Types.ObjectId, ref: 'User' }, "nickName": String }
],
C: [
{ "id": { type: mongoose.Schema.Types.ObjectId, ref: 'User' }, "nickName": String }
],
D: [
{ "id": { type: mongoose.Schema.Types.ObjectId, ref: 'User' }, "nickName": String }
]
}
})
module.exports = mongoose.model("friend", friendSchema);
这种数据结构 mongoose 怎么用 populate 联表查询填充id字段
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