ActiveAdmin resource for a namespaced resource

[karangb]

I am using ActiveAdmin for the first time. I am trying to create an administration page for a model that lives under my "Core" engine. I hence have defined a active_admin file as follows:

ActiveAdmin.register Core::Property do

end

This creates a tab within the active_admin tab section. However, I get the following error:

No route matches {:action=>"new", :controller=>"admin/core_properties"} missing required keys: []

How can I fix this?

Thanks"

[seanlinsley]

That's odd; a routing error complaining that... nothing extra is required for routing.

1. On what page are you getting this error? Is it when you visit /admin/core_properties?
2. What version of Rails, and AA, are you running?
3. Are you able to successfully register other models in your app?

[karangb]

Hi,

1. I just noticed that I am getting the error even on the /admin/comments page.
2. Rails 4 and edge copy of AA
3. no.
   I just reinstalled a fresh copy of rails and applied AA to it, and the comments page works. I believe I must have done something interesting to get that to fail in my main application.

I am going to revert my changes, and try again.

[seanlinsley]

You should be sure to use the rails4 branch of AA.

Hopefully you get it sorted!

[karangb]

Yeah, that is the one I am using. I will report my findings here :)

[karangb]

Okay, I found the solution. I had another admin engine living in my application, and hence occupied the admin namespace (which was also being used by active_admin).

Effectively, it was a namespace conflict. By either changing the namespace on active_admin, or the other engine, the issue was resolve.

[seanlinsley]

Ah. It seems like the only way to fix that would be:

# lib/active_admin/namespace.rb
def register_module
  if const = "::#{module_name}".safe_constantize
    raise "foo" unless const.const_defined? :CREATED_BY_ACTIVE_ADMIN
  end
  eval "module ::#{module_name}
    CREATED_BY_ACTIVE_ADMIN = true
  end"
end