A mini-project to practice Passport/Node.js
##Objectives Create a simple app that shows Facebook Profile information.
You can use the passport-facebook GitHub repo for a guide.
##Step 1: Set up passport, passport-facebook, express Set up a server.js file and include these npm dependencies:
- express
- express-session
- passport
- passport-facebook
Go over to the Facebook Developer Portal and Add a New App. Call it whatever you'd like.
Now let's put in the code necessary to get our authentication working:
- Create your express app, have it listen to a port that works for you
- Require passport and the passport FacebookStrategy
- Include the session middleware
app.use(session({secret: 'some-random-string'}))
- Include the passport.initialize middleware
app.use(passport.initialize())
- Include the passport.session middleware
app.use(passport.session())
- Define the FacebookStrategy
passport.use(new FacebookStrategy({
clientID: '<your_client_id>',
clientSecret: '<your_client_secret>',
callbackURL: 'http://localhost:3000/auth/facebook/callback'
}), function(token, refreshToken, profile, done) {
return done(null, profile);
});
##Step 2: Define your auth endpoints Create two routes that will handle your Facebook auth.
####GET /auth/facebook This route simply implements the passport.authenticate method, passing 'facebook' as the parameter.
####GET /auth/facebook/callback This route needs to pass the passport.authenticate method again, except we also need to pass in an object that passes the successRedirect and failureRedirect paths.
##Step 3: Create the deserialize/serializer methods on passport. Since you won't be doing anything further than just passing objects to/from passport and the session, we just need bare bones methods here:
passport.serializeUser(function(user, done) {
done(null, user);
});
passport.deserializeUser(function(obj, done) {
done(null, obj);
});
###Step 4: Create viewer endpoint Now we're going to create an endpoint that returns the current logged in user's Facebook profile data.
####GET /me
Create this route in your server.js that returns the user's Facebook profile data. The data is stored in req.user
if you've set everything up correctly. Return a JSON representation of this data at the /me
endpoint.
Use Postman to verify that you can in fact get the JSON data from the /me
endpoint.