Merge pull request solidusio#5219 from mamhoff/resource-controller-fo…

…r-foreign-engines

ResourceController: Allow overriding routes proxy

backend/app/controllers/spree/admin/resource_controller.rb

@@ -193,7 +193,7 @@ def parent
                   .find_by!(self.class.parent_data[:find_by] => params["#{parent_model_name}_id"])
     instance_variable_set("@#{parent_model_name}", @parent)
   rescue ActiveRecord::RecordNotFound => e
-    resource_not_found(flash_class: e.model.constantize, redirect_url: spree.polymorphic_url([:admin, parent_model_name.pluralize.to_sym]))
+    resource_not_found(flash_class: e.model.constantize, redirect_url: routes_proxy.polymorphic_url([:admin, parent_model_name.pluralize.to_sym]))
   end
 
   def parent?
@@ -238,38 +238,42 @@ def location_after_save
 
   def new_object_url(options = {})
     if parent?
-      spree.new_polymorphic_url([:admin, parent, model_class], options)
+      routes_proxy.new_polymorphic_url([:admin, parent, model_class], options)
     else
-      spree.new_polymorphic_url([:admin, model_class], options)
+      routes_proxy.new_polymorphic_url([:admin, model_class], options)
     end
   end
 
   def edit_object_url(object, options = {})
     if parent?
-      spree.polymorphic_url([:edit, :admin, parent, object], options)
+      routes_proxy.polymorphic_url([:edit, :admin, parent, object], options)
     else
-      spree.polymorphic_url([:edit, :admin, object], options)
+      routes_proxy.polymorphic_url([:edit, :admin, object], options)
     end
   end
 
   def object_url(object = nil, options = {})
     target = object ? object : @object
 
     if parent?
-      spree.polymorphic_url([:admin, parent, target], options)
+      routes_proxy.polymorphic_url([:admin, parent, target], options)
     else
-      spree.polymorphic_url([:admin, target], options)
+      routes_proxy.polymorphic_url([:admin, target], options)
     end
   end
 
   def collection_url(options = {})
     if parent?
-      spree.polymorphic_url([:admin, parent, model_class], options)
+      routes_proxy.polymorphic_url([:admin, parent, model_class], options)
     else
-      spree.polymorphic_url([:admin, model_class], options)
+      routes_proxy.polymorphic_url([:admin, model_class], options)
     end
   end
 
+  def routes_proxy
+    spree
+  end
+
   # Allow all attributes to be updatable.
   #
   # Other controllers can, should, override it to set custom logic

backend/spec/controllers/spree/admin/resource_controller_spec.rb

@@ -22,10 +22,12 @@ def model_class
     # Database
     class CreateWidgets < ActiveRecord::Migration[5.1]
       def change
-        create_table(:widgets) do |t|
-          t.string :name
-          t.integer :position
-          t.timestamps null: false
+        unless table_exists?(:widgets)
+          create_table(:widgets) do |t|
+            t.string :name
+            t.integer :position
+            t.timestamps null: false
+          end
         end
       end
     end
@@ -290,4 +292,13 @@ def check_destroy_constraints
       expect(flash[:error]).to eql('Product is not found')
     end
   end
+
+  describe "#routes_proxy" do
+    subject { controller.send(:routes_proxy) }
+
+    it "forwards to the #spree routing proxy" do
+      expect(controller).to receive(:spree).and_call_original
+      expect(subject).to be_a(ActionDispatch::Routing::RoutesProxy)
+    end
+  end
 end