#359 Twitter Integration pro

Great value as usual, just one question Ryan.

Do you dislike find_or_create (which I could understand BTW) or
maybe think that exists? ... || create! has other merits (like the bangs exception raising behavior).

Cheers
Robert

I'd been wrestling with trying to cache my 'latest tweet' partial and the cron job not expiring it properly for a while, this is a much tidier way to do it, with no delay in page loads.

Thanks.

Very good!

Just one question: I saw in the end that it's possible to change app permission dinamically, is it possible to change app name too? It would be useful for I18n, I have an app that has a name associated to an idiom and another name for another idiom.

cache can take an array, so you should do cache [testimonies, Date.today], no?

I've actually been having troubles storing the tweets in the database. With using postgresql, I get this error:

: SELECT 1 AS one FROM "tweets" WHERE "tweets"."tweet_id" = 222042501954019328 LIMIT 1
ActiveRecord::StatementInvalid: PGError: ERROR: operator does not exist: character varying = bigint

I had to actually declare the table creation differently.

class CreateTweets < ActiveRecord::Migration
  def change
    create_table :tweets, :id => false do |t|
      t.integer :tweet_id, :limit => 8
      t.string :twitter_name
      t.text :content

      t.timestamps
    end
  end
end

per this article: http://moeffju.net/blog/using-bigint-columns-in-rails-migrations

Not sure if this is the best method - but currently working on my end!

Can someone fill in the gap that occurs around 8:40? I'm using the latest version of the Twitter gem, and when I set up a twitter.rb initializer as specified, and configure environment variables to match up with the lines in the twitter.rb, go into the rails console, and run Twitter.favorites(count: 1) to test things, I get:

Twitter::Error::Unauthorized: This method required authentication...

Did something change in the Gem? Or, are there steps missing from the railscast?

I've basically followed the directions exactly, with the exception that the Gem I use is the latest Twitter Gem, located at github.com/sferik/twitter.

Is anyone having a problem displaying the profile_image_url? My code is below. The only thing that will display is the alt text of the img, never the image itself. However, when I review HTML, it has a url in the img and if I hover over the link it displays the image itself. This tells me the path is correct.

Any suggestions would be greatly appreciated.

<% if Twitter.rate_limit_status.remaining_hits > 1 %>
  <% Twitter.search(Channel.find(params[:id]).channel_name, :lang => "en", :rpp => 4, :result_type => "recent").each do |tweet| %>
    <%=image_tag(tweet.profile_image_url, :size => "16x10") %>
    <blockqoute><%= tweet.text %></blockqoute>
    <hr>
  <% end %>
<% end %>

I may be confused on the Twitter Secret & Consumer keys... but should these values be stored in a hash?

In the unfortunate event of a database being hacked - wouldn't that give access to post on user's Twitter accounts?

Don't make the mistake of setting tweet_id's type to an integer. MySQL maxes out at 2147483647 unless you specify a limit. It's easier to just make it a string.

How is it possible to extract hashtags via the twitter gem? I tried with:

def hashtags
@hashtags ||= entities(Twitter::Entity::Hashtag, :hashtags)
end

But it is on the view site I get in trouble! :s

How do I do the same for a authorized user, I've got the following in my controller, model, and index;

def index
                @bins = Bins.new
                @bins = Bins.all
                @tw = Newtweets.order("tweet_id desc").limit(100)
        end
def pull
     current_user.newtweets.pull_tweets
     return
end

def self.pull_tweets
          twitter.home_timeline(since_id: maximum(:tweet_id)).each do |tweet|
                  unless exists?(tweet_id: tweet.id)
                          create!(
                                  tweet_id: tweet.id,
                                  followers: tweet.user.followers_count,
                                  retweets: tweet.retweet_count,
                                  time_date: tweet.created_at,
                                  content: tweet.text,
                                  screen_name: tweet.user.screen_name,
                          )
                  end
          end
  end

<% @tw.each do |t| %>
                <div class="entry">
                    <div class="selection"><%= check_box_tag :label %></div>
                    <div class="stamp unknown"><%= t.time_date %><br /><span class="date"><%= date.day %>/<%= date.mon %>/<%= date.year %></span></div>
                    <div class="tweet">
                            <p><%= t.content %>
                        <br /><span class="username"><a href="https://www.twitter.com/<%= t.screen_name %>" target="_blank">@<%= t.screen_name %></a></span><span class="followers">Followers:<%= t.followers %></span><span class="retweets">Retweets: <%= t.retweets %></span></p>
                    </div>
                </div>
                <hr style="width:93%;height:1px;margin:-5px auto 10px auto;border:none;border-bottom:1px solid #EDEDED;" />
                <% end %>

As you've guessed it, I'm trying to use a refresh button to pull the route /refresh which runs the controller, that runs the model??

Not sure I'm doing this right. However, going in the console with the following command;

u.newtweets.pull_tweets

I get an error: NameError: uninitialized constant User::Newtweet

Should I be moving the self.pull_tweets stuff into a controller??

Any suggestions, thank you!

If you want to use Twitter authentication in https://teatro.io/ first create special stage application in Twitter and then set domain as project-token.ttrcloud.com and authentication urls as http://project-token.ttrcloud.com. It will work on any branch of this project.

If at 2:45 when Ryan interacts with Twitter methods in the console you receive an "Unable to verify your credentials" error, see this Stack Overflow thread:

http://stackoverflow.com/questions/17719358/twittererrorforbidden-unable-to-verify-your-credentials/17726689#17726689

Steps involve copying and pasting the Twitter.configure block mentioned in the thread into omniauth.rb, then supplying config.oauth_token and config.oauth_token_secret with values from dev.twitter.com.

This is done by generating access tokens. I did this by visiting the Twitter app I created, clicking on the "API Keys" tab, then generating the access tokens at the bottom of the page. Doing so will supply you with values that you can plug into the Twitter.configure block mentioned above.

One thing that isn't clear is this: Does a User have to authenticate with Twitter (through, like OmniAuth), or can they just authorize an app with read | read/write access?