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User Authentication With Express and Mongo

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Adding a Log Out Route

2:00 with Dave McFarland and Jonathan Foster

Create a log out route to destroy a user's session and log them out of the authentication system.

The Log Out Route code

// GET /logout
router.get('/logout', function(req, res, next) {
  if (req.session) {
    // delete session object
    req.session.destroy(function(err) {
      if(err) {
        return next(err);
      } else {
        return res.redirect('/');
      }
    });
  }
});

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    Basically, the existence of a session with a user ID 0:00
    indicates if a visitor is logged in or not. 0:01
    So the simplest way to log a visitor out is to remove or destroy that session. 0:04
    Express lets us do that easily. 0:09
    So let's add another route to our app. 0:11
    I'll open the index.js file in the route's directory, and 0:13
    I'll add a get route to /logout. 0:18
    Let's see, right about here. 0:21

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