Express validator

npm install --save express-validator

check('Username', 'Username contains non-alphanumeric characters - not allowed.').isAlphanumeric()

// ...rest of the initial code omitted for simplicity.
const { body, validationResult } = require('express-validator');

app.post(
  '/user',
  // username must be an email
  body('username').isEmail(),
  // password must be at least 5 chars long
  body('password').isLength({ min: 5 }),
  (req, res) => {
    // Finds the validation errors in this request and wraps them in an object with handy functions
    const errors = validationResult(req);
    if (!errors.isEmpty()) {
      return res.status(400).json({ errors: errors.array() });
    }

    User.create({
      username: req.body.username,
      password: req.body.password,
    }).then(user => res.json(user));
  },
);

npm install --save express-validator

npm install express-validator

Similar codes

1 vote131 views1 answer
Express ejs layout use different layout
Javascript Express
0 vote127 views1 answer
Node express table view
Javascript Express
1 vote137 views1 answer
Express body-parser is depreciated
Javascript Express
0 vote141 views1 answer
Node express mongo boilerplate with jwt
Javascript Express
1 vote128 views2 answers
Express error middleware
Javascript Express
0 vote129 views3 answers
How to serve React JS static files with express JS?
Javascript Express
0 vote133 views3 answers
Post express node js input
Javascript Express
3 votes141 views1 answer
Nodejs express return image
Javascript Express
0 vote156 views1 answer
Express Error: Cannot find module '.database/connection'
Javascript Express
59 votes253 views2 answers
Express js sample project
Javascript Express