Ruby on Rails

I did it by creating a new model called FeedItem and then creating an
observer to watch a certain subset of models and create feed items
when they were created, updated, and deleted. FeedItems have a
polymorphic association to the model being talked about and a user
association for who is doing the action, and then a string field
denoting the action taken on them ("created" or "destroyed" for
example).

Then on each model I created a #best_identifier method which allows
the model to specify how it should be identified to the user in the
feed and elsewhere in the app. So for the feed itself, I just render
the last 30 feed items with "#{feed_item.user_id}
#{feed_item.action_name} #{feed_item.modified_model.best_identifier}
on #{feed_item.created_at.to_s(:short)}".

Hopefully this helps! I can pastie my exact code if you'd like. There
are some other small tidbits to add like checking for destroyed models
(because you can't call best identifer on them anymore), linking to
the model and perhaps user, adding images where appropriate, ...

On Sep 27, 11:14 pm, nobosh <bhellm...@gmail.com> wrote:
> Hello, I'm interested in learning how to implement a News Feed /
> Activity Feed on a web app for multiple models like Books, Authors,
> Comments, etc...
>
> Any recommendations from the group? Gems/Plugins, or experience
> personally or from others on the best/smartest way to proceed?
>
> Thanks!

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