Login with Github

Application was developed on Ruby on Rails. To start create a Github OAuth App Follow the next steps after clonning this repo:

• Run bundle install on the terminal to install dependencies
• Insert Client ID and Client Secret into .env file
• Run rails s to start the application

.env config

.env file has to contain next vars

HOSTNAME=localhost
APP_URL=http://localhost:3000
GITHUB_LOGIN_URL=https://github.com/login/oauth/authorize?
GITHUB_CLIENT_ID=your_client_id
GITHUB_CLIENT_SECRET=your_client_secret
GITHUB_REDIRECT_URL=${APP_URL}/auth/github/cb
GITHUB_ACCESS_TOKEN_URL=https://github.com/login/oauth/access_token
GITHUB_USER_URL=https://api.github.com/user

What was done

I have added next routes:

• / for displaying link to login with Github
• /auth/github redirects a user to request identity
• /auth/github/cb Github redirects back to this URL
• /logout to logout a user

I added auth_controller with following actions to handle routes.

• index shows a page with link to Github Auth
• login redirects to Github with needed params
• cb handles response from Github. It will request access_token from Github. Further, with access_token will be requesting user info that will be stored (if doesn't exist) on the database and session
• in the logout action will be removed user id from session, so will redirect to root url with flash message