Add logic to show only winner investments if budget is finished

Backported from AyuntamientoMadrid/consul

app/controllers/budgets/investments_controller.rb

@@ -32,7 +32,11 @@ module Budgets
     respond_to :html, :js
 
     def index
-      @investments = investments.page(params[:page]).per(10).for_render
+      if @budget.finished?
+        @investments = investments.winners.page(params[:page]).per(10).for_render
+      else
+        @investments = investments.page(params[:page]).per(10).for_render
+      end
 
       @investment_ids = @investments.pluck(:id)
       load_investment_votes(@investments)

app/models/budget.rb

@@ -146,6 +146,8 @@ class Budget < ActiveRecord::Base
       %w{random}
     when 'publishing_prices', 'balloting', 'reviewing_ballots'
       %w{random price}
+    when 'finished'
+      %w{random}
     else
       %w{random confidence_score}
     end
@@ -193,5 +195,3 @@ class Budget < ActiveRecord::Base
     slug.nil? || drafting?
   end
 end
-
-