Add map to sidebar on Heading's page

Signed-off-by: Matheus Miranda <matheusmirandalacerda@gmail.com>

app/controllers/budgets/investments_controller.rb

@@ -1,5 +1,7 @@
 module Budgets
   class InvestmentsController < ApplicationController
+    OSM_DISTRICT_LEVEL_ZOOM = 12
+
     include FeatureFlags
     include CommentableActions
     include FlagActions
@@ -32,13 +34,17 @@ module Budgets
     respond_to :html, :js
 
     def index
-      if @budget.finished?
-        @investments = investments.winners.page(params[:page]).per(10).for_render
-      else
-        @investments = investments.page(params[:page]).per(10).for_render
-      end
+      all_investments = if @budget.finished?
+                          investments.winners
+                        else
+                          investments
+                        end
+
+      @investments = all_investments.page(params[:page]).per(10).for_render
 
       @investment_ids = @investments.pluck(:id)
+      @investments_map_coordinates =  MapLocation.where(investment_id: all_investments).map { |l| l.json_data }
+
       load_investment_votes(@investments)
       @tag_cloud = tag_cloud
     end
@@ -142,6 +148,7 @@ module Budgets
         if params[:heading_id].present?
           @heading = @budget.headings.find(params[:heading_id])
           @assigned_heading = @ballot.try(:heading_for_group, @heading.try(:group))
+          load_map
         end
       end
 
@@ -167,6 +174,13 @@ module Budgets
         end
       end
 
+      def load_map
+        @map_location = MapLocation.new
+        @map_location.zoom = OSM_DISTRICT_LEVEL_ZOOM
+        @map_location.latitude = @heading.latitude.to_f
+        @map_location.longitude = @heading.longitude.to_f
+      end
+
   end
 
 end