Initial support for #2644

app/models/user.rb

@@ -759,6 +759,35 @@ class User < ActiveRecord::Base
         q = q.where("id in (?)", params[:id].split(",").map(&:to_i))
       end
 
+      bitprefs_length = BOOLEAN_ATTRIBUTES.length
+      bitprefs_include = nil
+      bitprefs_exclude = nil
+
+      [:can_approve_posts, :can_upload_free, :is_super_voter].each do |x|
+        if params[x].present?
+          attr_idx = BOOLEAN_ATTRIBUTES.index(x.to_s)
+          if params[x] == "true"
+            bitprefs_include ||= "0"*bitprefs_length
+            bitprefs_include[attr_idx] = '1'
+          elsif params[x] == "false"
+            bitprefs_exclude ||= "0"*bitprefs_length
+            bitprefs_exclude[attr_idx] = '1'
+          end
+        end
+      end
+
+      if bitprefs_include
+        bitprefs_include.reverse!
+        q = q.where("bit_prefs::bit(:len) & :bits::bit(:len) = :bits::bit(:len)",
+                    {:len => bitprefs_length, :bits => bitprefs_include})
+      end
+
+      if bitprefs_exclude
+        bitprefs_exclude.reverse!
+        q = q.where("bit_prefs::bit(:len) & :bits::bit(:len) = 0::bit(:len)",
+                    {:len => bitprefs_length, :bits => bitprefs_exclude})
+      end
+
       if params[:current_user_first] == "true" && !CurrentUser.is_anonymous?
         q = q.order("id = #{CurrentUser.user.id.to_i} desc")
       end