Question

I’ve noticed that ActiveAdmin gets initialized and loaded even when I start up a rake task. Is there any way to specify that all files that ActiveAdmin creates under app/admin be loaded only when rails server gets booted?

The reason this is so problematic is because when you do something like the following:

ActiveAdmin.register Tip do
  filter :score_type, :as => :select, :collection => Tip.all
end

And you try to do a rake db:create, followed by a rake db:migrate, this file loads but Tip doesn’t exist yet!

Answer 1

This answers your question, but I believe will not solve your true problem.

In Ruby, to tell if a constant is defined:

Object.const_defined? "Tip"
 => false 
class Tip; end
> Object.const_defined? "Tip"
 => true 

So, you could wrap your ActiveAdmin definitions like so:

if Object.const_defined? "Tip"
  ActiveAdmin.register Tip do
    filter :score_type, :as => :select, :collection => Tip.all
  end
end