freeCodeCamp/curriculum/challenges/english/06-information-security-and-quality-assurance/advanced-node-and-express/create-new-middleware.english.md

id	title	challengeType
5895f70df9fc0f352b528e6a	Create New Middleware	2

Description

As a reminder, this project is being built upon the following starter project on Glitch, or cloned from GitHub. As in, any user can just go to /profile whether they authenticated or not by typing in the url. We want to prevent this by checking if the user is authenticated first before rendering the profile page. This is the perfect example of when to create a middleware. The challenge here is creating the middleware function ensureAuthenticated(req, res, next), which will check if a user is authenticated by calling passports isAuthenticated on the request which in turn checks for req.user is to be defined. If it is then next() should be called, otherwise we can just respond to the request with a redirect to our homepage to login. An implementation of this middleware is:

function ensureAuthenticated(req, res, next) {
  if (req.isAuthenticated()) {
    return next();
  }
  res.redirect('/');
};

Now add ensureAuthenticated as a middleware to the request for the profile page before the argument to the get request containing the function that renders the page.

app
 .route('/profile')
 .get(ensureAuthenticated, (req,res) => {
    res.render(process.cwd() + '/views/pug/profile');
 });

Submit your page when you think you've got it right.

Instructions

Tests

tests:
  - text: Middleware ensureAuthenticated should be implemented and on our /profile route
    testString: getUserInput => $.get(getUserInput('url')+ '/_api/server.js') .then(data => { assert.match(data, /ensureAuthenticated[^]*req.isAuthenticated/gi, 'Your ensureAuthenticated middleware should be defined and utilize the req.isAuthenticated function'); assert.match(data, /profile[^]*get[^]*ensureAuthenticated/gi, 'Your ensureAuthenticated middleware should be attached to the /profile route'); }, xhr => { throw new Error(xhr.statusText); })
  - text: A Get request to /profile correctly redirects to / since we are not authenticated
    testString: getUserInput => $.get(getUserInput('url')+ '/profile') .then(data => { assert.match(data, /Home page/gi, 'An attempt to go to the profile at this point should redirect to the homepage since we are not logged in'); }, xhr => { throw new Error(xhr.statusText); })

Challenge Seed

Solution

// solution required