Fixes empty my projects

app/models/user.rb

@@ -641,7 +641,7 @@ def belongs_to_projects
   #returns list of recent projects with a max count
   def recent_projects(max = 10)
     project_ids = ActivityStream.find_by_sql("SELECT project_id FROM Activity_Streams WHERE actor_id = #{self.id} AND updated_at > '#{Time.now.advance :days => (Setting::DAYS_FOR_RECENT_PROJECTS * -1)}' GROUP BY project_id ORDER BY MAX(updated_at) DESC LIMIT #{max}").collect {|a| a.project_id}.join(",")
-    return nil unless project_ids
+    return [] unless project_ids.length > 0
     Project.find(:all, :conditions => "id in (#{project_ids})")
   end
 

logfile

@@ -202,3 +202,5 @@ ERROR:  syntax error at or near "activity_streams" at character 205
 STATEMENT:  SELECT max("activity_streams".updated_at) AS max_updated_at, project_id,ActivityStream.find_by_sql("SELECT  project_id :updated_at AS project_id_activitystream_find_by_sql_select_project_id_updated FROM "activity_streams" WHERE ("activity_streams"."actor_id" = 3)  GROUP BY project_id,ActivityStream.find_by_sql("SELECT  project_id :updated_at  ORDER BY updated_at DESC 
 ERROR:  column "project_ids" does not exist at character 40
 STATEMENT:  SELECT * FROM "projects" WHERE (id in (project_ids)) 
+ERROR:  syntax error at or near ")" at character 40
+STATEMENT:  SELECT * FROM "projects" WHERE (id in ())