app/models/c2/reporter/bucket.rb in c2-0.1.9 vs app/models/c2/reporter/bucket.rb in c2-0.1.10

@@ -41,10 +41,10 @@
     self.scope.count
   end
   
   def refresh
     @series_cache = {}
-    started_at = self.scope.min(:created_at) || Time.now
+    started_at = self.scope.where(:created_at.ne => nil).min(:created_at) || Time.now
     self.scope.each do |item|
       date = (item.created_at || started_at).to_date
       @series.each do |key,value|
         data = item.respond_to?(key) ? item.send(key) : 1
         @series_cache[key] ||= Hash.new(0)
\ No newline at end of file