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 (all/journalists/startup_employees). Now I want to create another page for the same resource, and the same scopes, but there should be only records with waiting field set to true (and the previous page should displays only this with :waiting => false). How could I do that? I know I could do that with filters, but I need two separate pages, with two links in menu.

// SOLUTION

It was even easier than advices (thanks guys!):

ActiveAdmin.register User, :as => 'Waitlist User' do   menu :label => "Waitlist"    controller do     def scoped_collection       User.where(:waitlist => true)     end   end    # code    scope :all   scope :journalists   scope :startup_employees end 

---

ActiveAdmin.register User do   controller do     def scoped_collection       User.where(:waitlist => false)     end   end    # code    scope :all   scope :journalists   scope :startup_employees end 

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

Answer 2

you could use a parameter to distinguish the cases and render different actions depending on the parameter:

link_to users_path(:kind => 'waiting') 

and in the users_controller.rb

def index   if params[:kind]=='waiting'     @users= Users.where(:waiting => true)     render :action => 'waiting' and return   else     # do your other stuff   end end 

then put your new, different page (partial) in app/views/users/waiting.html.erb

If you want to use a different layout for this page add the layout parameter to render:

render :action => 'waiting', :layout => 'other_layout' and return