Yes, it is possible. If you are not going to save the tweets to a database it is better to create an api so you can call it from any place or put it all inside of a controller.
A benefit of doing so is that you can then use parameters.
Take a look at my code: https://github.com/eflores1975/stock-dashboard/blob/master/app/controllers/tweets_controller.rb
Basically it loads the tweets to an array and then using ActiveSupport::JSON.decode I convert it in a consumable object and start to massage it to suit my needs.
And,finally, I can use it as: http://gentle-tor-3942.herokuapp.com/tweets/get_tweets?symbol=$aapl
Where symbol=$aapl is the hash tag that I am looking for.