Fixes #voodoorai2000 comments

Fixes some comments from #voodoorai2000 for the PR to consul

app/controllers/dashboard/achievements_controller.rb

@@ -0,0 +1,44 @@
+class Dashboard::AchievementsController < Dashboard::BaseController
+  include Dashboard::ExpectsDateRange
+
+  def index
+    authorize! :dashboard, proposal
+    render json: processed_groups
+  end
+
+  private
+
+  def processed_groups
+    grouped_results = groups
+    grouped_results.each do |key, results|
+      grouped_results[key] = {
+        executed_at: results.last.executed_at,
+        title: results.last.action.title
+      }
+    end
+
+    grouped_results
+  end
+
+  def groups
+    if params[:group_by] == 'week'
+      return executed_proposed_actions.group_by { |v| "#{v.executed_at.to_date.cweek}/#{v.executed_at.to_date.year}"}
+    end
+
+    if params[:group_by] == 'month'
+      return executed_proposed_actions.group_by { |v| "#{v.executed_at.to_date.year}-#{v.executed_at.to_date.month}"}
+    end
+
+    executed_proposed_actions.group_by { |a| a.executed_at.to_date }
+  end
+
+  def executed_proposed_actions
+    @executed_proposed_actions ||= Dashboard::ExecutedAction
+                                     .joins(:action)
+                                     .includes(:action)
+                                     .where(proposal: proposal)
+                                     .where(executed_at: start_date.beginning_of_day..end_date.end_of_day)
+                                     .where(dashboard_actions: { action_type: 0 })
+                                     .order(executed_at: :asc)
+  end
+end