This document provides instructions for configuring a Twitter application to use OAuth authentication with the Twitter4R library. It describes setting up a new Twitter app, configuring consumer tokens, getting access tokens for each user by redirecting them to Twitter for authorization, and using the access tokens when interacting with Twitter on behalf of each user. The goal is for third party apps to authenticate with Twitter using OAuth instead of requiring users to share their passwords.

1. Configuring your Twitter4R App with OAuth
Susan Potter
(@SusanPotter)
Twitter4R
(@t4ruby)
March 2011

2. OAuth. . .
• sucks to configure
• but it is better than users
passing 3rd party apps their clear passwords
• 3rd party apps don’t need
to store passwords that are decryptable

3. OAuth. . .
• sucks to configure
• but it is better than users
passing 3rd party apps their clear passwords
• 3rd party apps don’t need
to store passwords that are decryptable

4. OAuth. . .
• sucks to configure
• but it is better than users
passing 3rd party apps their clear passwords
• 3rd party apps don’t need
to store passwords that are decryptable

5. In this screencast we will. . .
• set up a new Twitter app
https://twitter.com/apps/new
• configure consumer tokens
every app has a key and a secret; secret should be ’secret’
• getting access tokens for user
apps need to retrieve access tokens for each user
• use access tokens
store access tokens (key and secret) for each user

6. In this screencast we will. . .
• set up a new Twitter app
https://twitter.com/apps/new
• configure consumer tokens
every app has a key and a secret; secret should be ’secret’
• getting access tokens for user
apps need to retrieve access tokens for each user
• use access tokens
store access tokens (key and secret) for each user

7. In this screencast we will. . .
• set up a new Twitter app
https://twitter.com/apps/new
• configure consumer tokens
every app has a key and a secret; secret should be ’secret’
• getting access tokens for user
apps need to retrieve access tokens for each user
• use access tokens
store access tokens (key and secret) for each user

8. In this screencast we will. . .
• set up a new Twitter app
https://twitter.com/apps/new
• configure consumer tokens
every app has a key and a secret; secret should be ’secret’
• getting access tokens for user
apps need to retrieve access tokens for each user
• use access tokens
store access tokens (key and secret) for each user

9. Setting up a new Twitter app
• Go to twitter.com
• Login to your account
• Fill in form at twitter.com/apps/new
• Copy consumer tokens

10. Setting up a new Twitter app
• Go to twitter.com
• Login to your account
• Fill in form at twitter.com/apps/new
• Copy consumer tokens

11. Setting up a new Twitter app
• Go to twitter.com
• Login to your account
• Fill in form at twitter.com/apps/new
• Copy consumer tokens

12. Setting up a new Twitter app
• Go to twitter.com
• Login to your account
• Fill in form at twitter.com/apps/new
• Copy consumer tokens

13. Configuring consumer tokens
# In a Rails 2.3 / 3.x app this might be
# in: config/initializers/twitter4r.rb
Twitter Client.configure do |config|
config.oauth_consumer_token = CONSUMER_KEY
config.oauth_consumer_secret = CONSUMER_SECRET
end

14. Configuring consumer tokens
# In a Rails 2.3 / 3.x app this might be
# in: config/initializers/twitter4r.rb
Twitter Client.configure do |config|
config.oauth_consumer_token = CONSUMER_KEY
config.oauth_consumer_secret = CONSUMER_SECRET
end

15. Configuring consumer tokens
# In a Rails 2.3 / 3.x app this might be
# in: config/initializers/twitter4r.rb
Twitter Client.configure do |config|
config.oauth_consumer_token = CONSUMER_KEY
config.oauth_consumer_secret = CONSUMER_SECRET
end

16. Configuring consumer tokens
# In a Rails 2.3 / 3.x app this might be
# in: config/initializers/twitter4r.rb
Twitter Client.configure do |config|
config.oauth_consumer_token = CONSUMER_KEY
config.oauth_consumer_secret = CONSUMER_SECRET
end

17. Getting access tokens for a user, [1/2]
# Using OAuth Ruby gem library helper in:
# app/controller/application_controller.rb
def redirect_to_twitter
consumer = OAuth Consumer.new KEY, SECRET,
:site => “https://twitter.com”
token = consumer.get_request_token
redirect_to(token.authorize_url)
end

18. Getting access tokens for a user, [1/2]
# Using OAuth Ruby gem library helper in:
# app/controller/application_controller.rb
def redirect_to_twitter
consumer = OAuth Consumer.new KEY, SECRET,
:site => “https://twitter.com”
token = consumer.get_request_token
redirect_to(token.authorize_url)
end

19. Getting access tokens for a user, [1/2]
# Using OAuth Ruby gem library helper in:
# app/controller/application_controller.rb
def redirect_to_twitter
consumer = OAuth Consumer.new KEY, SECRET,
:site => “https://twitter.com”
token = consumer.get_request_token
redirect_to(token.authorize_url)
end

20. Getting access tokens for a user, [1/2]
# Using OAuth Ruby gem library helper in:
# app/controller/application_controller.rb
def redirect_to_twitter
consumer = OAuth Consumer.new KEY, SECRET,
:site => “https://twitter.com”
token = consumer.get_request_token
redirect_to(token.authorize_url)
end

21. Getting access tokens for a user, [2/2]
# Using OAuth Ruby gem library in:
# app/controller/oauth_controller.rb
def create
provider = params[:provider]
case provider
when ’twitter’
# bla bla bla
end
end
# Remember to add the routes:
match ’oauth/:provider/callback’ => ’oauth#create’

22. Getting access tokens for a user, [2/2]
# Using OAuth Ruby gem library in:
# app/controller/oauth_controller.rb
def create
provider = params[:provider]
case provider
when ’twitter’
# bla bla bla
end
end
# Remember to add the routes:
match ’oauth/:provider/callback’ => ’oauth#create’

23. Getting access tokens for a user, [2/2]
# Using OAuth Ruby gem library in:
# app/controller/oauth_controller.rb
def create
provider = params[:provider]
case provider
when ’twitter’
# bla bla bla
end
end
# Remember to add the routes:
match ’oauth/:provider/callback’ => ’oauth#create’

24. Using access tokens
# Pass in access key/secret tokens to
# Twitter Client.new call for each user
client = Twitter Client.new :oauth_access => {
:key => ACCESS_KEY,
:secret => ACCESS_SECRET }
client.status(:post, “Tweet from my OAuth-ed app”)

25. Using access tokens
# Pass in access key/secret tokens to
# Twitter Client.new call for each user
client = Twitter Client.new :oauth_access => {
:key => ACCESS_KEY,
:secret => ACCESS_SECRET }
client.status(:post, “Tweet from my OAuth-ed app”)

26. Using access tokens
# Pass in access key/secret tokens to
# Twitter Client.new call for each user
client = Twitter Client.new :oauth_access => {
:key => ACCESS_KEY,
:secret => ACCESS_SECRET }
client.status(:post, “Tweet from my OAuth-ed app”)

27. Fin
HTH, if you have more questions:
twitter4r-users@googlegroups.com

28. Fin
HTH, if you have more questions:
twitter4r-users@googlegroups.com