displays error on failed update

app/controllers/admin/spending_proposals_controller.rb

@@ -14,9 +14,9 @@ class Admin::SpendingProposalsController < Admin::BaseController
   end
 
   def edit
-    @admins = Administrator.includes(:user).all
-    @valuators = Valuator.includes(:user).all.order("description ASC").order("users.email ASC")
-    @tags = ActsAsTaggableOn::Tag.spending_proposal_tags
+    load_admins
+    load_valuators
+    load_tags
   end
 
   def update
@@ -24,6 +24,9 @@ class Admin::SpendingProposalsController < Admin::BaseController
       redirect_to admin_spending_proposal_path(@spending_proposal, SpendingProposal.filter_params(params)),
                   notice: t("flash.actions.update.spending_proposal")
     else
+      load_admins
+      load_valuators
+      load_tags
       render :edit
     end
   end
@@ -38,4 +41,16 @@ class Admin::SpendingProposalsController < Admin::BaseController
       params.require(:spending_proposal).permit(:title, :description, :external_url, :geozone_id, :association_name, :administrator_id, :tag_list, valuator_ids: [])
     end
 
+    def load_admins
+      @admins = Administrator.includes(:user).all
+    end
+
+    def load_valuators
+      @valuators = Valuator.includes(:user).all.order("description ASC").order("users.email ASC")
+    end
+
+    def load_tags
+      @tags = ActsAsTaggableOn::Tag.spending_proposal_tags
+    end
+
 end

spec/features/admin/spending_proposals_spec.rb

@@ -423,6 +423,20 @@ feature 'Admin spending proposals' do
       end
     end
 
+    scenario "Errors on update" do
+      spending_proposal = create(:spending_proposal)
+      create(:geozone, name: "Barbate")
+
+      visit admin_spending_proposal_path(spending_proposal)
+      click_link 'Edit'
+
+      fill_in 'spending_proposal_title', with: ''
+
+      click_button 'Update'
+
+      expect(page).to have_content "can't be blank"
+    end
+
   end
 
   context 'Summary' do