Index: app/models/query.rb
===================================================================
--- app/models/query.rb	(revision 3255)
+++ app/models/query.rb	(working copy)
@@ -97,6 +97,9 @@
                   "t+"  => :label_in,
                   "t"   => :label_today,
                   "w"   => :label_this_week,
+                  "m-"  => :label_prev_month,
+                  "m"   => :label_this_month,
+                  "m+"  => :label_next_month,
                   ">t-" => :label_less_than_ago,
                   "<t-" => :label_more_than_ago,
                   "t-"  => :label_ago,
@@ -109,8 +112,8 @@
                                  :list_status => [ "o", "=", "!", "c", "*" ],
                                  :list_optional => [ "=", "!", "!*", "*" ],
                                  :list_subprojects => [ "*", "!*", "=" ],
-                                 :date => [ "<t+", ">t+", "t+", "t", "w", ">t-", "<t-", "t-" ],
-                                 :date_past => [ ">t-", "<t-", "t-", "t", "w" ],
+                                 :date => [ "<t+", ">t+", "t+", "t", "w", ">t-", "<t-", "t-", "m-", "m", "m+" ],
+                                 :date_past => [ ">t-", "<t-", "t-", "t", "w", "m-", "m" ],
                                  :string => [ "=", "~", "!", "!~" ],
                                  :text => [  "~", "!~" ],
                                  :integer => [ "=", ">=", "<=", "!*", "*" ] }
@@ -520,6 +523,16 @@
       sql = "LOWER(#{db_table}.#{db_field}) LIKE '%#{connection.quote_string(value.first.to_s.downcase)}%'"
     when "!~"
       sql = "LOWER(#{db_table}.#{db_field}) NOT LIKE '%#{connection.quote_string(value.first.to_s.downcase)}%'"
+    when "m", "m+", "m-"
+      date = Time.now
+      date = date.last_month if operator.at(1) == "-"
+      date = date.next_month if operator.at(1) == "+"
+
+      from = date.at_beginning_of_month
+      to = date.at_end_of_month
+      sql = "#{db_table}.#{db_field} BETWEEN '%s' AND '%s'" % [connection.quoted_date(from), connection.quoted_date(to)]
+    else
+      sql = "1 = 1"
     end
     
     return sql
Index: app/views/queries/_filters.rhtml
===================================================================
--- app/views/queries/_filters.rhtml	(revision 3255)
+++ app/views/queries/_filters.rhtml	(working copy)
@@ -35,6 +35,9 @@
     case "*":
     case "t":
     case "w":
+    case "m-":
+    case "m":
+    case "m+":
     case "o":
     case "c":
       Element.hide("div_values_" + field);
Index: config/locales/en.yml
===================================================================
--- config/locales/en.yml	(revision 3255)
+++ config/locales/en.yml	(working copy)
@@ -567,6 +567,8 @@
   label_last_week: last week
   label_last_n_days: "last {{count}} days"
   label_this_month: this month
+  label_prev_month: previous month
+  label_next_month: next month
   label_last_month: last month
   label_this_year: this year
   label_date_range: Date range
Index: config/locales/ru.yml
===================================================================
--- config/locales/ru.yml	(revision 3255)
+++ config/locales/ru.yml	(working copy)
@@ -575,6 +575,7 @@
   label_news_view_all: Посмотреть все новости
   label_news: Новости
   label_next: Следующий
+  label_next_month: следующий месяц
   label_nobody: никто
   label_no_change_option: (Нет изменений)
   label_no_data: Нет данных для отображения
@@ -600,6 +601,7 @@
   label_precedes: предшествует
   label_preferences: Предпочтения
   label_preview: Предварительный просмотр
+  label_prev_month: предыдущий месяц
   label_previous: Предыдущий
   label_project: проект
   label_project_all: Все проекты