Mongodb 我们可以在Mongoose中这样使用Unique：[True，"；This to Unique&qot；]吗

发布于01月25日

import mongoose from "mongoose";

const userSchema = new mongoose.Schema(
    {
        name: {
            type: String,
            required: [true, "Please provide your name."],
            minLength: [3, "Name must be at least 3 characters long"],
            maxLength: [50, "Name cannot exceed 50 characters"],
            trim: true,
            index: true,
        },
        username: {
            type: String,
            required: [true, "Please provide a username."],
            minLength: [3, "Username must be at least 3 characters long"],
            maxLength: [30, "Username cannot exceed 30 characters"],
            unique: [
                true,
                "This username is already taken. Please choose another one.",
            ],
            lowercase: true,
            trim: true,
            index: true,
        },
        email: {
            type: String,
            required: [true, "Please provide your email address."],
            unique: [
                true,
                "This email address is already registered. Please login or use a different one.",
            ],
            lowercase: true,
            trim: true,
        },
        password: {
            type: String,
            required: [true, "Please provide a password."],
            minLength: [8, "Password must be at least 8 characters long"],
            maxLength: [50, "Password cannot exceed 50 characters"],
        },      
    },
    { timestamps: true }
);

export const User = mongoose.model("User", userSchema);

我们可以这样使用Unique吗？

我见过Mongoose Docs，Required，MaxLength，minLength在那里使用过，但没有Unique.你能帮我这个忙吗？

这是正确的还是这样使用它是一种好的做法

app.post('/user', async (req, res) => { try{ const newUser = await User.create({ name: req.body.name, username: req.body.username, email: req.body.email, password: req.body.password }); return res.status(201).json({ message: 'New User Created' }) }catch(err){ console.log(err); if(err.code === 11000){ const errorMessages = new Map([ ['username', 'This username is already taken. Please choose another one.'], ['email', 'This email address is already registered. Please login or use a different one.'], ]); return res.status(400).json({ error: errorMessages.get(Object.keys(err.keyPattern)[0]) }) }else{ return res.status(500).json({ error: 'Error on Server' }) } } })

Mongodb 我们可以在Mongoose中这样使用Unique：[True，"；This to Unique&qot；]吗

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