Two pages for the same resource - ActiveAdmin

Question

Currently I have User model, which is registered in user.rb as a new resource for ActiveAdmin. Generated page displays all users with scopes (

Answer 1

STI (Single table inheritance) can be used to create multiple "sub-resources" of the same table/parent model in Active admin

1. Add a "type" column in user table as a string

2. Add this to User model to mirror waiting field with type field

   after_commit {|i| update_attribute(:type, waiting ? "UserWaiting" : "UserNotWaiting" )}
   

3. Create the new models UserWaiting and UserNotWaiting

   class UserWaiting < User
   end
   class UserNotWaiting < User
   end
   

4. Create Active Admin resources

   ActiveAdmin.register UserWaiting do
   # ....
   end
   ActiveAdmin.register UserNotWaiting do
   # ....
   end
   

5. You can run a first-time sync in console

   User.all.each {|user| user.save}
   

..............

Another way could be to skip the type column (steps 1,2 and 5) and solve the rest with scopes.

1. Step 3 and 4 above

2. Then create the scopes

   #model/user.rb
   scope :waiting, where(:waiting => true)
   scope :not_waiting, where(:waiting => false)
   

3. Scopes in Active Admin

   #admin/user.rb
   scope :waiting, :default => true
   
   #admin/user_not_waitings.rb
   scope :not_waiting, :default => true
   

Just make sure the other scopes in these two pages are also filtered on waiting/not_waiting