diff --git a/app/logical/post_query_builder.rb b/app/logical/post_query_builder.rb
index ad456a01d..80e6a8f36 100644
--- a/app/logical/post_query_builder.rb
+++ b/app/logical/post_query_builder.rb
@@ -242,7 +242,13 @@ class PostQueryBuilder
     end
 
     if q[:approver_id]
-      relation = relation.where("posts.approver_id = ?", q[:approver_id])
+      if q[:approver_id] == "any"
+        relation = relation.where("posts.approver_id is not null")
+      elsif q[:approver_id] == "none"
+        relation = relation.where("posts.approver_id is null")
+      else
+        relation = relation.where("posts.approver_id = ?", q[:approver_id])
+      end
       has_constraints!
     end
 
diff --git a/app/models/tag.rb b/app/models/tag.rb
index 34610f64b..009b6e40a 100644
--- a/app/models/tag.rb
+++ b/app/models/tag.rb
@@ -418,8 +418,14 @@ class Tag < ActiveRecord::Base
             q[:approver_id_neg] << user_id unless user_id.blank?
 
           when "approver"
-            user_id = User.name_to_id($2)
-            q[:approver_id] = user_id unless user_id.blank?
+            if $2 == "none"
+              q[:approver_id] = "none"              
+            elsif $2 == "any"
+              q[:approver_id] = "any"
+            else
+              user_id = User.name_to_id($2)
+              q[:approver_id] = user_id unless user_id.blank?
+            end
 
           when "commenter", "comm"
             q[:commenter_ids] ||= []