[7.0-stable] Fix re-render of layoutpages form if validation fails

app/controllers/alchemy/admin/layoutpages_controller.rb

@@ -17,6 +17,25 @@ def index
       def edit
         @page = Page.find(params[:id])
       end
+
+      def update
+        @page = Page.find(params[:id])
+        if @page.update(page_params)
+          @notice = Alchemy.t("Page saved", name: @page.name)
+          render "alchemy/admin/pages/update"
+        else
+          render :edit, status: :unprocessable_entity
+        end
+      end
+
+      private
+
+      def page_params
+        params.require(:page).permit(
+          :name,
+          :tag_list
+        )
+      end
     end
   end
 end

app/views/alchemy/admin/layoutpages/edit.html.erb

@@ -1,4 +1,4 @@
-<%= alchemy_form_for [:admin, @page], class: 'edit_page' do |f| %>
+<%= alchemy_form_for [:admin, @page], url: alchemy.admin_layoutpage_path(@page), class: 'edit_page' do |f| %>
   <%= f.input :name, autofocus: true %>
   <div class="input string">
     <%= f.label :tag_list %>

config/routes.rb

@@ -49,7 +49,7 @@
       end
     end
 
-    resources :layoutpages, only: [:index, :edit]
+    resources :layoutpages, only: [:index, :edit, :update]
 
     resources :pictures, except: [:new] do
       collection do

lib/alchemy/permissions.rb

@@ -96,7 +96,7 @@ def alchemy_author_rules
         can :leave, :alchemy_admin
         can [:info, :help], :alchemy_admin_dashboard
         can :manage, :alchemy_admin_clipboard
-        can :edit, :alchemy_admin_layoutpages
+        can :update, :alchemy_admin_layoutpages
         can :tree, :alchemy_admin_pages
 
         # Resources

spec/controllers/alchemy/admin/layoutpages_controller_spec.rb

@@ -62,5 +62,29 @@ module Alchemy
         end
       end
     end
+
+    describe "#update" do
+      let(:page) { create(:alchemy_page, :layoutpage) }
+
+      context "with passing validations" do
+        subject { put :update, params: {id: page.id, page: {name: "New Name"}}, format: :js }
+
+        it "renders update template" do
+          is_expected.to render_template("alchemy/admin/pages/update")
+        end
+      end
+
+      context "with failing validations" do
+        subject { put :update, params: {id: page.id, page: {name: ""}} }
+
+        it "renders edit form" do
+          is_expected.to render_template(:edit)
+        end
+
+        it "sets 422 status" do
+          expect(subject.status).to eq 422
+        end
+      end
+    end
   end
 end

spec/libraries/permissions_spec.rb

@@ -148,6 +148,10 @@
       is_expected.to be_able_to(:switch, Alchemy::Language)
     end
 
+    it "can update layoutpages" do
+      is_expected.to be_able_to(:update, :alchemy_admin_layoutpages)
+    end
+
     context "if page language is public" do
       let(:language) { create(:alchemy_language, :german, public: true) }
       let(:page) { create(:alchemy_page, language: language) }