addresses #927, make date searches time zone aware

app/logical/post_query_builder.rb

@@ -21,7 +21,11 @@ class PostQueryBuilder
     
     case arr[0]
     when :eq
-      relation.where(["#{field} = ?", arr[1]])
+      if arr[1].is_a?(Time)
+        relation.where("#{field} between ? and ?", arr[1].beginning_of_day, arr[1].end_of_day)
+      else
+        relation.where(["#{field} = ?", arr[1]])
+      end
 
     when :gt
       relation.where(["#{field} > ?", arr[1]])

app/logical/post_sets/popular.rb

@@ -3,12 +3,12 @@ module PostSets
     attr_reader :date, :scale
     
     def initialize(date, scale)
-      @date = date.blank? ? Date.today : date.to_date
+      @date = date.blank? ? Time.zone.now : Time.zone.parse(date)
       @scale = scale
     end
     
     def posts
-      ::Post.where("created_at between ? and ?", min_date, max_date + 1).order("score desc").limit(limit)
+      ::Post.where("created_at between ? and ?", min_date.beginning_of_day, max_date.end_of_day).order("score desc").limit(limit)
     end
     
     def limit

app/models/tag.rb

@@ -174,7 +174,7 @@ class Tag < ActiveRecord::Base
 
       when :date
         begin
-          object.to_date
+          Time.zone.parse(object)
         rescue Exception
           nil
         end