Ruby, Rails, OSX and Linux fun

 
# config/initializers/twitter.rb
 
Twitter.configure do |config|
  config.consumer_key = ENV["TWITTER_CONSUMER_KEY"]
  config.consumer_secret = ENV["TWITTER_CONSUMER_SECRET"]
  config.oauth_token = ENV["TWITTER_OAUTH_TOKEN_SECRET"]
  config.oauth_token_secret = ENV["TWITTER_OAUTH_TOKEN_SECRET"]
end

# app/models/twitter_status.rb
 
 
class TwitterStatus
  attr_accessor :default_ttl
  attr_accessor :user
 
  # if no user is initialized, then use own screen_name from Twitter
  def user
    @user || Twitter.user.screen_name
  end
 
  # refresh time
  def default_ttl
    @default_ttl || 1.hour
  end
 
  def timeline
    unless is_fresh?
      reload
    end
    read_timeline
  end
 
  # Re-fetch timeline from twitter and saves it to the cache again
  def reload
    set_timeline
    set_timestamp
  end
 
 
private
  def cache_key
    "twitter_timeline_#{user.to_s}"
  end
 
  def cache_timestamp
    "twitter_timestamp_#{user.to_s}"
  end
 
  def fetched_at
    Rails.cache.read(cache_key)
  end
 
  def read_timeline
    Rails.cache.read(cache_key)
  end
 
  def set_timestamp
    Rails.cache.write(cache_timestamp, Time.now, timeToLive: default_ttl)
  end
 
  def set_timeline
    Rails.cache.write(cache_key, Twitter.user_timeline(user, include_entities: true))
  rescue
    Rails.logger.info("Error: Cannot connect to twitter or network down")
    Rails.cache.write(cache_key, [])
  end
 
  def is_fresh?
    fetched_at && fetched_at.is_a?(Time) && ((fetched_at + default_ttl) > Time.now)
  end
 
end

# Initialize object
> my_timeline = TwitterStatus.new
 => #<TwitterStatus:0x007ff70dc50da8> 
 
# Default Time to store on memcached is 1 hour
> my_timeline.default_ttl
 => 3600 seconds
 
# Change the update interval to 10 minutes.
> my_timeline.default_ttl = 10.minutes
 => 600 seconds
 
# Get Array of recent tweets for Own Timeline
> my_timeline.timeline
 => [#<Twitter::Status:0x007ff70da00468 @attrs={. . . . 
 
# Get latest single tweet on your timeline:
> my_timeline.timeline.first.text
 => "Hello world http://t.co/123456" 
 
 
# Get timeline of another user
> user_timeline = TwitterStatus.new
 => #<TwitterStatus:0x007ff70dc98860>
> user_timeline.user = "fred_on_rails"
 => "fred_on_rails" 
 
# Get fred's last tweet from timeline
1.9.3-p194 :039 > user_timeline.timeline.first.text
 => "Rainwater Crimes: Man gets jail and fines for collecting on his own land http://t.co/Qzn5NWpS" 
 
# Force reload, it refetches from twitter and saves it to the cache again
> user_timeline.reload
 => true

# app/helpers/twitter_helper.rb
 
module TwitterHelper
  def url_for_twit(user,status_id)
    "https://twitter.com/#{user}/status/#{status_id}"
  end
end

  @twitter_status = TwitterStatus.new
  @twitter_status.user = current_user.twitter_screen_name
  @twitter_status.default_ttl = 30.minutes

<h3>Twitter Updates</h3>
<ul>
  <% @twitter_status.timeline[0..5].each do |status| %>
    <li>
      <%= link_to(status.text, url_for_twit(@twitter_status.user, status.id), target: 'blank') %>
      <span class="twitter-feed-date">
        <%= time_ago_in_words status.created_at %> ago
      </span>
    </li>
  <% end %>
</ul>