fix my totally broken ApplicationRequest.stats method

app/models/application_request.rb

@@ -102,27 +102,17 @@ class ApplicationRequest < ActiveRecord::Base
   end
 
   def self.stats
-    @stats ||= begin
-      s = HashWithIndifferentAccess.new({
-        all_total: 0,
-        all_30_days: 0,
-        all_7_days: 0
-      })
+    s = HashWithIndifferentAccess.new({})
 
     self.req_types.each do |key, i|
       query = self.where(req_type: i)
       s["#{key}_total"]   = query.sum(:count)
       s["#{key}_30_days"] = query.where("date > ?", 30.days.ago).sum(:count)
       s["#{key}_7_days"]  = query.where("date > ?", 7.days.ago).sum(:count)
-
-        s[:all_total]   += s["#{key}_total"]
-        s[:all_30_days] += s["#{key}_30_days"]
-        s[:all_7_days]  += s["#{key}_7_days"]
     end
 
     s
   end
-  end
 end
 
 # == Schema Information