Add success banner

app/controllers/form_controller.rb

@@ -229,11 +229,13 @@ private
 
     if params[@log.model_name.param_key]["check_errors"]
       @page = form.get_page(params[@log.model_name.param_key]["page"])
+      flash[:notice] = "You have successfully updated #{@page.questions.map(&:check_answer_label).to_sentence}"
       return send("#{@log.class.name.underscore}_#{params[@log.model_name.param_key]['original_page_id']}_path", @log, { check_errors: true, related_question_ids: params[@log.model_name.param_key]["related_question_ids"].split(" ") }.compact)
     end
 
     if params["referrer"] == "check_errors"
       @page = form.get_page(params[@log.model_name.param_key]["page"])
+      flash[:notice] = "You have successfully updated #{@page.questions.map(&:check_answer_label).to_sentence}"
       return send("#{@log.class.name.underscore}_#{params['original_page_id']}_path", @log, { check_errors: true, related_question_ids: params["related_question_ids"] }.compact)
     end
 

spec/requests/check_errors_controller_spec.rb

@@ -274,7 +274,7 @@ RSpec.describe CheckErrorsController, type: :request do
       context "and answering specific lettings question" do
         let(:params) do
           {
-            original_page_id: "income_amount",
+            original_page_id: "household_members",
             referrer: "check_errors",
             related_question_ids: %w[hhmemb ecstat1 earnings],
             lettings_log: {
@@ -293,6 +293,7 @@ RSpec.describe CheckErrorsController, type: :request do
           follow_redirect!
           expect(request.query_parameters["check_errors"]).to eq("true")
           expect(request.query_parameters["related_question_ids"]).to eq(%w[hhmemb ecstat1 earnings])
+          expect(page).to have_content("You have successfully updated Number of household members")
         end
       end
 
@@ -319,6 +320,7 @@ RSpec.describe CheckErrorsController, type: :request do
           follow_redirect!
           expect(request.query_parameters["check_errors"]).to eq("true")
           expect(request.query_parameters["related_question_ids"]).to eq(%w[income1 la ownershipsch])
+          expect(page).to have_content("You have successfully updated Buyer 1’s gross annual income known? and Buyer 1’s gross annual income")
         end
       end
     end