Question

我正在尝试在使用多个连接 (following the docs) 时创建模型，但出现以下错误：

TS2345: Argument of type 'Schema<Document<any>, Model<Document<any>>>' is not assignable to parameter of
type 'Schema<UserInterface, UserModelInterface>'.
Types of property 'methods' are incompatible.
... (a bunch of 'is not assignable - is missing the following properties' errors follow) ...

我的代码如下：

_database.ts

import mongoose from "mongoose";

// const mongo = mongoose.connection(process.env.DB_URI!, {
const mongo = mongoose.createConnection(process.env.DB_URI!, {
    useUnifiedTopology: true,
    useNewUrlParser: true,
    useFindAndModify: false,
    useCreateIndex: true
})

export default mongo

_UserModel.ts

import mongoose, {Model} from 'mongoose';
import bcrypt from 'bcrypt'
import database from "../database";

interface UserDocumentInterface extends mongoose.Document {
    firstname: string
    lastname: string
    ...
}
    
interface UserInterface extends UserDocumentInterface {
    // Instance methods
    hashPassword(password: string): Promise<string>
    ...
}
    
export interface UserModelInterface extends Model<UserInterface> {
    // Static methods
    // Currently empty
}

const UserSchema = new mongoose.Schema({
    firstname: {
        type: String,
        required: true,
        trim: true
    },
    lastname: {
        type: String,
        required: true,
        index: true,
        trim: true,
    },
    ...
})

// Methods definitions
UserSchema.methods.hashPassword = async function(password) {
    return await bcrypt.hash(password, 10);
}
...

// const User: UserModelInterface = mongoose.model<UserInterface, UserModelInterface>('User', UserSchema)
const User = database.model<UserInterface, UserModelInterface>('User', UserSchema)
export default User

错误出现在 UserSchema 中的 const User = database.model<UserInterface, UserModelInterface>('User', UserSchema)

我不明白为什么这条线没有问题

const User: UserModelInterface = mongoose.model<UserInterface, UserModelInterface>('User', UserSchema)

但是这个会报错

const User = database.model<UserInterface, UserModelInterface>('User', UserSchema)

当唯一改变的是连接类型时，mongoose.createConnection() 而不是 mongoose 默认连接

具有多个连接的猫鼬打字稿模型创建

0 个答案: