NoMethodError: undefined method `nested_belongs_to' for #<ActiveAdmin::ResourceDSL:0x007ff35fd05160>

[andreydeineko]

Hey! Here is my SO question: http://stackoverflow.com/questions/26607801/inherited-resources-issue-in-activeadmin-rails-4

I am not 100% sure it is a bug as is, but still it could be an activeadmin issue..

The problem is that routes are being built wrong.
ActiveAdmin.register Discussion
belongs_to :my_active_submission, parent_class: ClientApplication
end

works ok, and gives me
/dev_panel/my_active_submissions/:my_active_submission_id/discussions/:id

but

ActiveAdmin.register Post, namespace: :dev_panel do
belongs_to :discussion
end

gives me
/dev_panel/discussions/:discussion_id/posts/:id
instead of
/dev_panel/my_active_submissions/:my_active_submission_id/discussions/:id/posts/:id

[timoschilling]

On you Stackoverflow post I read you want to use nested_belongs_to from inherited_resources than you need to go this way:

ActiveAdmin.register Discussion do
  controller do
    nested_belongs_to ...
  end
end

ActiveAdmin has no method nested_belongs_to and supports only belongs_to.
There are many other Issues addressing this problem #2082 and there is a PR for that #3280.
So I close this here as a double.

[andreydeineko]

Hey @timoschilling, yea, I've seen all these threads before posting.. And I've for sure tried to do it as you've shown, but with no luck - routes did not change and remained the same. It does not really matter how, the only thing is that I've struggled whole day today to get the correct routes, and no good so far..

[timoschilling]

Yes, that is what I say, ActiveAdmin don't support nested_belongs_to at the moment

[andreydeineko]

I see. So do you think I have any chance to make these nested models generate proper routes? I tried a lot of things and don't really know, how to go with that

[timoschilling]

You can try using inherited_resources nested_belongs_to in the controller block and write your routes by hand

[timoschilling]

Take a look at http://guides.rubyonrails.org/routing.html#routing-concerns

[andreydeineko]

Hey! Thanks a lot for assistance! I've found an acceptable work around, so I'm cool. Thanks once again!