CODEWITHSUNDEEP
node.jsmongodbmongooseschemajoi
Raz Buchnik
Raz Buchnik

Reputation: 8411

Using Joi schemas alongside Mongoose schemas?

I want to prevent user input to be inserted into the MongoDB. I want to validate user input properly.

Joi offers a schema based verification in order to test the user input. Actually sounds good.

Mongoose also have schemas itself, what are the differences?

How about using Joi schema and use mongojs plugin instead of Mongoose?

Upvotes: 2

Views: 2381

Answers (1)

Omar Hussein
Omar Hussein

Reputation: 90

The difference between Mongoose's and Joi's schemas

Mongoose's schemas: This is where you define the model and the fields it's going to accept

eg.

const Schema = require('mongoose').Schema;
const UserSchema = new Schema ({
  username: String
  email: String
})
const User = mongoose.module("user", UserSchema))

Here you're saying that the User model will accept only a username and an email and both are going to be strings.

Joi's schema: Here you define the validation rules to validate the received data before creating a doc of it.
eg.

const receivedData = {username: "John Doe", email: "[email protected]"}
const Joi = require('joi');
const schema = Joi.object().keys({
    username: Joi.string().alphanum().min(3).max(30).required(),
    email: Joi.string().email()
})
const result = Joi.validate(receivedData, schema)

So this is how you define the rules with the Joi schema

  • username field must be a string, alphanum and of length between 3 and 30
  • email field must be a string and an email

The result will be stored in the result constant in a form of an object.

And I haven't used mongojs before but Joi doesn't relay on Mongoose. so I guess it'll be fine to use monojs.

Upvotes: 3

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