To get started with this example, clone the repository and install the dependencies.
$ git clone firstname.lastname@example.org:passport/express-4.x-facebook-example.git $ cd express-4.x-facebook-example $ npm install
This example requires credentials from Facebook, which can be obtained by
app in the App Dashboard.
The OAuth redirect URI of the app should be set to:
Once credentials have been obtained, create a
.env file and add the following
Start the server.
$ npm start
$ express --view ejs express-4.x-facebook-example
The example uses SQLite for storing user accounts. SQLite is a lightweight database that works well for development, including this example.
Added to the scaffolding are files which add authentication to the application.
This file initializes the database by creating the tables used to store user accounts and credentials.
This file initializes Passport. It configures the Facebook strategy and supplies the serialization functions used for session management.
This file defines the routes used for authentication. In particular, there are three routes used to authenticate with Facebook:
This route renders a page that prompts the user to login with Facebook.
This route begins the authentication sequence by redirecting the user to Facebook.
This route completes the authentication sequence when Facebook redirects the user back to the application. When a new user logs in, a user account is automatically created and their Facebook account is linked. When an existing user returns, they are logged in to their linked account.