Mongoose/TypeScript $addToSet、$push 和 $pull 错误

Question

我有一个将“userId”订阅到 threadId 的函数，如下所示：

 suscribeToThread: async (threadId: IThread["_id"], userId: IUser["_id"]) => {
    return await threadModel.updateOne(
      { _id: threadId },
      { $addToSet: { suscribers: userId } }
    );
},

我收到以下错误：

Type '{ suscribers: string; }' is not assignable to type '{ readonly [x: string]: any; readonly [x: number]: any; } & NotAcceptedFields<_AllowStringsForIds<LeanDocument<any>>, readonly any[]> & { readonly [key: string]: any; } & { readonly id?: any; ... 4 more ...; readonly replies?: string | AddToSetOperators<...>; } & NotAcceptedFields<...>'.
  Type '{ suscribers: string; }' is not assignable to type 'NotAcceptedFields<_AllowStringsForIds<LeanDocument<any>>, readonly any[]>'.
    Property 'suscribers' is incompatible with index signature.
      Type 'string' is not assignable to type 'never'.ts(2322)

这个错误只发生在 $addToSet、$push 和 $pull 操作符上。

这是线程模型的模型/接口

import mongoose, { Document, Schema } from "mongoose";
import { IComment } from "../comment/commentModel";
import { IUser } from "../user/userModel";

export interface IThread extends Document {
  _id: string;
  title: string;
  timestamp: number;
  author: IUser["_id"];
  content: string;
  locked: boolean;
  sticky: boolean;
  likedBy: Array<IUser["_id"]>;
  dislikedBy: Array<IUser["_id"]>;
  viewedBy: Array<IUser["_id"]>;
  suscribers: Array<IUser["_id"]>;
  replies: Array<IComment["_id"]>;
}

const ThreadSchema = new mongoose.Schema({
  title: String,
  timestamp: { type: Date, default: Date.now },
  author: { type: Schema.Types.ObjectId, ref: "User" },
  content: String,
  locked: { type: Boolean, default: false },
  sticky: { type: Boolean, default: false },
  likedBy: [{ type: Schema.Types.ObjectId, ref: "User", default: [] }],
  dislikedBy: [{ type: Schema.Types.ObjectId, ref: "User", default: [] }],
  viewedBy: [{ type: Schema.Types.ObjectId, ref: "User", default: [] }],
  suscribers: [{ type: Schema.Types.ObjectId, ref: "User", default: [] }],
  replies: [{ type: Schema.Types.ObjectId, ref: "Comment", default: [] }],
});

export default mongoose.models.Thread ||
  mongoose.model<IThread>("Thread", ThreadSchema);

我可以使用 ts-ignore 忽略错误，一切正常，但我认为这不是正确的方法。任何帮助将不胜感激！

Answer 1

suscribeToThread 函数：

import mongoose from "mongoose";

suscribeToThread: async (threadId: IThread["_id"], userId: IUser["_id"]) => {
        return await threadModel.updateOne(
          { _id: threadId },
          { $addToSet: { suscribers: new mongoose.Types.ObjectId(userId) } }
        );
    }

线程模型：

import mongoose, { Document, Schema } from "mongoose";
import { IComment } from "../comment/commentModel";
import { IUser } from "../user/userModel";

export interface IThread extends Document {
    _id: string;
    title: string;
    timestamp: number;
    author: IUser["_id"];
    content: string;
    locked: boolean;
    sticky: boolean;
    likedBy: Array<IUser["_id"]>;
    dislikedBy: Array<IUser["_id"]>;
    viewedBy: Array<IUser["_id"]>;
    suscribers: Array<IUser["_id"]>;
    replies: Array<IComment["_id"]>;
}

const ThreadSchema = new mongoose.Schema({
    title: String,
    timestamp: { type: Date, default: Date.now },
    author: { type: Schema.Types.ObjectId, ref: "User" },
    content: String,
    locked: { type: Boolean, default: false },
    sticky: { type: Boolean, default: false },
    likedBy: {
        type: [mongoose.Types.ObjectId],
        ref: "User",
        default: []
    },
    dislikedBy: {
        type: [mongoose.Types.ObjectId],
        ref: "User",
        default: []
    },
    viewedBy: {
        type: [mongoose.Types.ObjectId],
        ref: "User",
        default: []
    },
    suscribers: {
        type: [mongoose.Types.ObjectId],
        ref: "User",
        default: []
    },
    replies: {
        type: [mongoose.Types.ObjectId],
        ref: "User",
        default: []
    }
});

export default mongoose.models.Thread || mongoose.model < IThread > ("Thread", ThreadSchema);

您需要将 userId 转换为 ObjectId。它是字符串类型，所以打字稿会抛出错误。