Idiomatic Rails way to create/destroy association models?

rubyonrails-talk
1

In Ruby on Rails I have the following model relationship: A has_many :c, through: :foobar, source: :foobarable, source_type: “C”. When I want to create (or remove) an association (foobar) between A and C, what is the idiomatic Rails way of doing this through the UI? For example from an A view, add (or remove) a C (or vice-versa).

Should I have an independent controller for the association model (foobar) with create and destroy actions that are called to add or remove an association?

2

More specifically…

Does it make more sense to add new actions to as_controller like:

  • add_c
  • remove_c

And cs_controller like:

  • add_a
  • remove_a

Or have a foobars_controller with:

  • create
  • destroy

That can be called from either side of the UI workflow.

4

The idiomatic way would be to have create and destroy actions on the association controller.

In terms of the views, that is a lot more wide open and depends on your app and the specifics of its UI. You can add buttons or links to the views for A and/or C, and/or something else entirely that hits the association create/destroy action.