[thoughtbot#179] Allowing Administrate Namespace class to return Acti…

…veRecord/Model classes. This allows one to reference ActiveModel’s route values (route_key, singular_route_key) when generating Polymorphic URLs.

lib/administrate/namespace.rb

@@ -10,6 +10,12 @@ def resources
       end
     end
 
+    def models
+      namespace_controller_paths.uniq.map do |controller|
+        controller.split(/^#{namespace}\//)[1].classify.constantize
+      end
+    end
+
     private
 
     attr_reader :namespace

spec/administrate/namespace_spec.rb

@@ -16,4 +16,19 @@
       end
     end
   end
+
+  describe "#models" do
+    it "searches the routes for ActiveRecord models in the namespace" do
+      begin
+        namespace = Administrate::Namespace.new(:admin)
+        Rails.application.routes.draw do
+          namespace(:admin) { resources :customers }
+        end
+
+        expect(namespace.models).to eq [::Customer]
+      ensure
+        reset_routes
+      end
+    end
+  end
 end