我的资源附件不能删的问题

app/controllers/users_controller.rb

@@ -2618,7 +2618,9 @@ class UsersController < ApplicationController
 
   # 获取我的资源
   def get_my_resources author_id, user_course_ids, user_project_ids, order, score
+    unless author_id.to_i.to_s == author_id
       author_id = User.find_by_login(author_id).id
+    end
     attachments = Attachment.where("(author_id = #{author_id} and is_publish = 1 and container_id is not null and container_type in('OrgSubfield','Principal','Issue','Document','Message','News','StudentWorkScore','HomewCommon')) "+
                                        "or (container_type = 'Course'  and container_id in (#{user_course_ids.empty? ? '0': user_course_ids.join(',')}) and is_publish = 1 and container_id is not null)" +
                                        "or (container_type = 'Project'  and container_id in (#{user_project_ids.empty? ? '0': user_project_ids.join(',')}) and is_publish = 1 and container_id is not null)" ).order("#{order.nil? ? 'created_on' : order} #{score}")