课程主留言添加删除功能

app/models/journals_for_message.rb

@@ -69,6 +69,7 @@ class JournalsForMessage < ActiveRecord::Base
     end
   end
 
+  
   def self.remove_by_user? user
     if(  self.user == user || 
        ( self.jour.kind_of?(User) && self.jour== user )
@@ -88,6 +89,15 @@ class JournalsForMessage < ActiveRecord::Base
     User.find(reply_id)
   end
 
+  def delete_by_user?user
+    # 用户可删除自己的留言
+    if self.user.id == user.id || user.admin?
+      return true
+    else
+      return false
+    end
+  end
+  
   def self.reference_message(user_id)
     @user = User.find(user_id)
     message = JournalsForMessage.find_by_sql("select * from journals_for_messages where reply_id = #{@user.id}

app/views/courses/feedback.html.erb

@@ -78,6 +78,9 @@ function checkMaxLength() {
 							'#{l(:label_reply_plural)} #{journal.user.name}: '); 
 							return false;"} %>
 			<% end %>
+              <% if journal.delete_by_user?(User.current) %>
+				<%= link_to(l(:button_delete), {:controller => 'words', :action => 'destroy',  :object_id => journal, :user_id => journal.user}, :method => :delete,:remote => true)%>
+			<% end %>
 			</span> 
 		</span>
 		<div style="clear: both;"></div>