Hide headings with no investments

The page should not show any headings which don't have any
winning investments. The "no content" message should only be
shown when there are no headings with investments to avoid an
otherwise blank page.

__Note:__ in the main @headings query, _both_ #includes and #joins
are needed to:
 1. eager load all necessary data (#includes)
and
 2. to perform an INNER JOIN on milestones to filter out investments
with no milestones (#joins).

app/controllers/budgets/executions_controller.rb

@@ -7,7 +7,16 @@ module Budgets
     def show
       authorize! :read_executions, @budget
       @statuses = ::Budget::Investment::Status.all
-      @headings = @budget.headings.order(id: :asc)
+      @headings = @budget.headings
+                         .includes(investments: :milestones)
+                         .joins(investments: :milestones)
+                         .where(budget_investments: {winner: true})
+                         .distinct
+                         .order(id: :asc)
+
+      if params[:status].present?
+        @headings = @headings.where(filter_investment_by_latest_milestone, params[:status])
+      end
     end
 
     private
@@ -16,5 +25,11 @@ module Budgets
         @budget = Budget.find_by(slug: params[:id]) || Budget.find_by(id: params[:id])
       end
 
+      def filter_investment_by_latest_milestone
+        <<-SQL
+          (SELECT status_id FROM budget_investment_milestones
+           WHERE investment_id = budget_investments.id ORDER BY publication_date DESC LIMIT 1) = ?
+        SQL
+      end
   end
 end

app/helpers/budget_executions_helper.rb

@@ -1,25 +0,0 @@
-module BudgetExecutionsHelper
-
-  def winner_investments(heading)
-    if params[:status].present?
-      heading.investments
-             .winners
-             .joins(:milestones)
-             .distinct
-             .where(filter_investment_by_latest_milestone, params[:status])
-    else
-      heading.investments
-             .winners
-             .joins(:milestones)
-             .distinct
-    end
-  end
-
-  def filter_investment_by_latest_milestone
-    <<-SQL
-      (SELECT status_id FROM budget_investment_milestones
-       WHERE investment_id = budget_investments.id ORDER BY publication_date DESC LIMIT 1) = ?
-    SQL
-  end
-
-end

app/views/budgets/executions/_investments.html.erb

@@ -2,9 +2,8 @@
     <h4 id="<%= heading.name.parameterize %>">
       <%= heading.name %>
     </h4>
-  <% if winner_investments(heading).any? %>
     <div class="row" data-equalizer-on="medium" data-equalizer>
-      <% winner_investments(heading).each do |investment| %>
+      <% heading.investments.each do |investment| %>
         <div class="small-12 medium-6 large-4 column end margin-bottom">
           <div class="budget-execution">
             <%= link_to budget_investment_path(@budget, investment, anchor: "tab-milestones"), data: { 'equalizer-watch': true } do %>
@@ -31,9 +30,4 @@
         </div>
       <% end %>
     </div>
-  <% else %>
-    <div class="callout primary clear">
-      <%= t("budgets.executions.no_winner_investments") %>
-    </div>
-  <% end %>
 <% end %>

app/views/budgets/executions/show.html.erb

@@ -62,6 +62,12 @@
       </div>
     <% end %>
 
+    <% if @headings.any? %>
       <%= render 'budgets/executions/investments' %>
+    <% else %>
+      <div class="callout primary clear">
+        <%= t("budgets.executions.no_winner_investments") %>
+      </div>
+    <% end %>
   </div>
 </div>

config/locales/en/budgets.yml

@@ -179,7 +179,7 @@ en:
       page_title: "%{budget} - Milestones"
       heading: "Participatory budget Milestones"
       heading_selection_title: "By district"
-      no_winner_investments: "No winner investments for this heading"
+      no_winner_investments: "No winner investments in this state"
       filters:
         label: "Project's current state"
         all: "All"

config/locales/es/budgets.yml

@@ -179,7 +179,7 @@ es:
       page_title: "%{budget} - Seguimiento de proyectos"
       heading: "Seguimiento de proyectos"
       heading_selection_title: "Ámbito de actuación"
-      no_winner_investments: "No hay proyectos de gasto ganadores para esta partida"
+      no_winner_investments: "No hay proyectos de gasto ganadores en este estado"
       filters:
         label: "Estado actual del proyecto"
         all: "Todos"

spec/features/budgets/executions_spec.rb

@@ -27,7 +27,9 @@ feature 'Executions' do
     expect(page).not_to have_content(investment4.title)
   end
 
-  scenario 'render a message for headings without winner investments' do
+  scenario "Do not display headings with no winning investments for selected status" do
+    create(:budget_investment_milestone, investment: investment1)
+
     empty_group   = create(:budget_group, budget: budget)
     empty_heading = create(:budget_heading, group: empty_group, price: 1000)
 
@@ -38,11 +40,25 @@ feature 'Executions' do
     expect(page).to have_content(empty_heading.name)
 
     click_link 'Milestones'
-    click_link "#{empty_heading.name}"
 
-    expect(page).to have_content('No winner investments for this heading')
+    expect(page).to have_content(heading.name)
+    expect(page).not_to have_content(empty_heading.name)
   end
 
+  scenario "Show message when there are no winning investments with the selected status", :js do
+    create(:budget_investment_status, name: I18n.t('seeds.budgets.statuses.executed'))
+
+    visit budget_path(budget)
+
+    click_link 'See results'
+    click_link 'Milestones'
+
+    expect(page).not_to have_content('No winner investments in this state')
+
+    select 'Executed', from: 'status'
+
+    expect(page).to have_content('No winner investments in this state')
+  end
 
   context 'Images' do
     scenario 'renders milestone image if available' do
@@ -157,7 +173,6 @@ feature 'Executions' do
       select 'Studying the project', from: 'status'
 
       expect(page).not_to have_content(investment1.title)
-      expect(page).to have_content('No winner investments for this heading')
 
       select 'Bidding', from: 'status'