Adding Feeds to Feedjira via Front-End

I'm looking to add feeds via the front-end to be fetched by Feedjira, I've followed the basic Railscast tutorial and got 1 feed set up and working. What I can't wrap my head around is allowing me to add a feed to feedjira via the front end (e.g. text box) and then letting the cron job pick it up and parse it.

I have a user model and posts model, with a default Feedjira set-up. I'm guessing I need a 'feeds' table in the user model which stores the URL's of the users desired RSS feeds and then passes them into Feedjira to be parsed?

Pretty new at rails/ruby and would love some help/guidance on this matter.

Thanks