Mongoose validate unique email 1, last published: a year ago. path('email'). Each method includes a description of how it works and a corresponding code snippet for implementation. ensureIndex( { "email": 1 }, { unique: true } ) To do this type of validation using Mongoose (Mongoose calls this complex validation- ie- you are not just asserting the value is a number for example), you will need to wire in to the pre-save event: mySchema. Dec 6, 2019 · I cannot find a proper way to provide validation for email uniqueness in mongoose. js can enhance Mongoose’s validation capabilities with pre-built and optimized validators for common tasks like email validation, URL validation, and more. If your validator returns `false`, // mongoose will use the 'Name `Power Ranger` is not valid' message. Dec 21, 2012 · Both mongoose-unique-validator and the technique in the timstermatic blog are fundamentally flawed because they do a separate query to check for uniqueness before the insert/update, so if another insert/update runs after the validator runs, both will get inserted. If your validator throws an exception, // mongoose will use that message. 1. equal(err. 0. Dec 30, 2023 · Mongoose, which is a Node. Start using mongoose-unique-validator in your project by running `npm i mongoose-unique-validator`. By using built-in validators for commons checks and custom validators for more complex scenarios, you can build robust persistence layers with comprehensive data rules. myCollection. Nothing I have found actually works. message, 'Need to get a Turbo Man for Christmas'); assert. Nov 17, 2019 · I am trying to enforce a Unique Email address when a user signs up. vali Jul 13, 2020 · Mongoose lets you define schema paths as `unique`, but the `unique` option has a few important caveats. Feb 22, 2022 · I need to validate the email to fix the E11000 error before sending a query in nestjs mongoose. In this tutorial, we will delve into email validation within Mongoose schemas using multiple examples, from basic regex matching to advanced custom validators. pre, but how would I go about writing the code Mongoose also supports validation for update(), updateOne(), updateMany(), and findOneAndUpdate() operations. Feb 4, 2021 · Here's how you can validate emails, and ensure emails are unique, using Mongoose. Jul 3, 2024 · Integrating third-party libraries like validator. Schema({ email: { type: String, unique: [true, 'Email already exists'] } }); Explanation: The email field is unique in the database. This is expected behavior The unique: true is equivalent to setting an index in mongodb like this: db. The way Mongoose implements this validation is by adding a unique index in my email attribute in the user schema. js ODM (Object Data Modeling) library for MongoDB, provides a robust schema-based solution to model your application data. mongoose-unique-validator is a plugin which adds pre-save validation for unique fields within a Mongoose schema. I was thinking to use Schema. If a document with a duplicate email is inserted, Mongoose will return an error: "Email already exists. assert. Feb 3, 2022 · Level up your programming skills with exercises across 52 languages, and insightful discussion with our dedicated team of welcoming mentors. value, 'Power Ranger'); Yarn: yarn add mongoose-unique-validator NPM: npm install --save mongoose-unique-validator Then, apply the plugin to your schema: Dec 30, 2023 · Mongoose data validation is a powerful feature that can greatly reduce errors and data corruption within your application. name. " Min and Max Validators The min and max validators ensure that numeric or date values fall within a Aug 2, 2013 · I have a mongoose schema for users (UserSchema) and I'd like to validate whether the email has the right syntax. . Update validators are off by default - you need to specify the runValidators option. But it's not a solution for everyone. errors. See how it works, and what to use instead. There are 199 other projects in the npm registry using mongoose-unique-validator. pre("save",function Jun 23, 2020 · For sure, check out the documentation too! The unique Option is Not a Validator To understand that, you have to understand what would happen when you put the unique: true in the schema. Sep 22, 2025 · unique: true Example: const userSchema = new mongoose. Here's what you need to know. Oct 30, 2024 · Mongoose provides a basic framework for email validation. Jul 25, 2025 · How to Implement Email Validation in Mongoose Here are four common ways to validate email addresses in Mongoose. // NPM Packages import * as mongoose from 'mongoose'; // This is new in mongoose 5. Latest version: 4. The validation that I currently use is the following: UserSchema. But Mongoose does not seem to be obeying the unique: true flag in my schema. Controller @Post('register') async register(@Body() register . xtkwr bjerwq bkadp mcnrvz uydn bnrgv evruz iyqyoz rloymc dgw brmuovn ztjbgy ihjetef sswrpav zig