Users currently have no way to be notified when new conferences are
published on an OSEM instance. This adds an RSS 2.0 feed endpoint at
/feed.rss that lists all conferences ordered by creation date.
The feed action is excluded from CanCanCan authorization so it remains
publicly accessible without authentication, similar to the existing
calendar endpoint.
Also adds an RSS subscribe link to the conferences index page and an
auto-discovery <link> tag in the application layout so RSS readers can
detect the feed automatically.
Fixes#3543
Conferences.incoming is defined on the model as scope:
scope :upcoming, (-> { where('end_date >= ?', Date.current) })
Conference.past
scope :past, (-> { where('end_date < ?', Date.current) })
It used to be a partial inside #index, but having their own page
yields some extra benefits:
- Performance: Move logic from the view to the controller
- Theres' no need to go extra steps inside the :index view
- UI: Remove the extra 'Upcoming Conferences' when the system needs
to start the flow of the creation of the first user
The current codebase will end in a 500 APPLICATION ERROR if Conference#short_title isn't found... this should be a 404 NOT FOUND INSTEAD, which will be handled if we raise ActiveRecord::RecordNotFound.
Added missing image url as well as created twitter card.
validated both with twitter validator and facebook validator.
All passed.
Need to check to see if no image is selected, what is outcome.
The single query was producing a tremendously large ActiveRecord allocation.
While this isn't nearly as cool as one query, it's still a significant
reduction in SQL trips, and now has the bonus of only loading what is
actually going to be displayed.
