README

Google Oauth without any Library Files 😃 :

Steps:

1.Go to https://console.developers.google.com

2.Create New Project

3.Get your app client_id and client_secret id

Google Login for Web and Mobile Devices Using Ruby on Rails :

include the gem in your Gemfile:

gem 'rest-client'

And then execute:

$ bundle install

Steps:

1.rails g model oauth

2.rake db:migrate

3.rails g controller oauth google_oauth

google_oauth Functions :

Oauth.rb File

 # Get accesstoken 
  def self.googleAccessTokenCheckWithCode(code,redirect_uri)
  
    code = URI.decode(code)
    user = Hash.new
    begin
      params = {"code" => code, 'client_id' => '1234', "client_secret" => "1234" , "redirect_uri" => redirect_uri , "grant_type" => "authorization_code"}
      response = RestClient.post 'https://www.googleapis.com/oauth2/v3/token', params
      token_res = JSON.parse(response.body)
      accessToken = token_res["access_token"]
      user = googleAccessTokenCheck(accessToken)
      return user
    rescue Exception => e
      user["message"] = e.message
      user["status"] = false
    end
    return user

 end

# Get information 
 def self.googleAccessTokenCheck(accessToken)
 
     require 'rest_client'
     response = ""
     user = Hash.new
     begin
      response = RestClient.get 'https://www.googleapis.com/oauth2/v2/userinfo?token_type=Bearer&access_token='+ accessToken
      if (response.code == 200)
        user_deta = JSON.parse(response.body)
        user["unique_id"] = user_deta["id"]
        user["name"] = user_deta["name"]
        user["email"] = user_deta["email"]
        user["provider"] = "google"
        user["access_token"] = accessToken
        user["status"] = true
      end
     rescue Exception => e
	    user["message"] = e.message
	    user["status"] = false
     end
    return user

end

routes.rb File:

post 'oauth' => "oauth#google_oauth"

Sample Response :