How to make username and email case insensitive in MongoDB-CodePudding

I am trying to make [email protected] the same as [email protected] and here is the User.js file. I am unable to find a way to make the email as well as the username case insensitive. @username should be the same as @UserName. I read about queries here but couldn't figure out how to add it in the schema. I want the request to have any case but it should not differentiate between upper and lower when comparing it with the stored one in the database.

const mongoose = require('mongoose');
const UserSchema = new mongoose.Schema(
    {
        username: {
            type: String,
            required: true,
            min: 3,
            max: 15,
            unique: true,
            index: {
                unique: true,
                collation: { locale: 'en', strength: 2 },
            },
        },
        email: {
            type: String,
            required: true,
            max: 50,
            unique: true,
            index: {
                unique: true,
                collation: { locale: 'en', strength: 2 },
            },
        },
        password: {
            type: String,
            required: true,
            min: 6,
        },
        profilePicture: {
            type: String,
            default: '',
        },
        cover: {
            type: String,
            default: '',
        },
        followers: {
            type: Array,
            default: [],
        },
        following: {
            type: Array,
            default: [],
        },
        isAdmin: {
            type: Boolean,
            default: false,
        },
    },
    { timestamps: true }
);

module.exports = mongoose.model('User', UserSchema);

Another thing is, is the following code making any sense?

index: {
                    unique: true,
                    collation: { locale: 'en', strength: 2 }

CodePudding user response：

 username: {
            type: String,
            required: true,
            min: 3,
            max: 15,
            lowercase:true,
            unique: true,
            index: {
                unique: true,
                collation: { locale: 'en', strength: 2 },
            },
        }

You can fix the problem by setting "lowercase:true"

When you get the input value,

let str = "[email protected]"; str.toLowerCase(); ("[email protected]")

will be. You can do it this way.