添加两个公用的方法。从硬盘上删除对应的资源文件，更新资源文件的owner

app/helpers/application_helper.rb

@@ -33,6 +33,35 @@ module ApplicationHelper
   extend Forwardable
   def_delegators :wiki_helper, :wikitoolbar_for, :heads_for_wiki_formatter
 
+  # Time 2015-03-24 15:27:29
+  # Author lizanle
+  # Description 从硬盘上删除对应的资源文件
+  def delete_kindeditor_assets_from_disk owner_id,owner_type
+    assets = Kindeditor::Asset.where(["owner_id = ? and owner_type = ?",owner_id,owner_type])
+    if !assets.nil? && !assets.blank?
+      assets.all.each do |asset|
+        next if asset.nil?
+        filepath = File.join(Rails.root,"public","files","uploads",
+                             asset[:created_at].to_s.gsub("+0800","").to_datetime.strftime("%Y%m").to_s,
+                             asset[:asset].to_s)
+        File.delete(filepath) if File.exist?filepath
+      end
+    end
+  end
+
+  # Time 2015-03-24 16:38:05
+  # Author lizanle
+  # Description after save后需要进行资源记录的更新
+  # owner_type = 1 对应的是 memo
+  def update_kindeditor_assets_owner ids,owner_id,owner_type
+    ids.each do |id|
+      asset = Kindeditor::Asset.find(id.to_i)
+      asset.owner_id = owner_id
+      asset.owner_type = owner_type
+      asset.save
+    end
+  end
+
   # Added by young
   # Define the course menu's link class
   # 不是数组的转化成数组，然后判断当前menu_item是否在给定的列表