How can I integrate express-validator with Mongoose?

How can I integrate express-validator with Mongoose?

To integrate express-validator with Mongoose, you can use middleware to validate your request data before it reaches your Mongoose model.

Can you show me a code example?

Sure! First, install express-validator. Then, in your route, use the validation middleware like this:

const { body, validationResult } = require('express-validator');

app.post('/user', [
  body('email').isEmail(),
  body('password').isLength({ min: 5 })
], (req, res) => {
  const errors = validationResult(req);
  if (!errors.isEmpty()) {
    return res.status(400).json({ errors: errors.array() });
  }
  // Proceed with Mongoose model creation
});

What if the validation fails?

If validation fails, you can return a 400 status code along with the error messages, as shown in the example above.