BlogUmbraco and Things

Event Handlers & Media Folders

I am currently redeveloping a site for a Digital Photography club. At the moment it is Joomla based, but the time has come to convert it to Umbraco.

The club runs online photo competitions whereby all members will be able to upload 3 images to the competition.

They run 10 competitions a year and so the solution within Umbraco will be to have a parent node of "Competitions" and then the website administrator will create child nodes for each competition.

To keep things simple I wanted the administrator to only ahve to create the content node and automagically a media folder created and linked to the content node via a property within the document type.

So enter stage right: Event Handlers

The following is some prototype code that achieves just that.

using System;
using System.Collections.Generic;
using System.Text;
using umbraco.BusinessLogic;
using umbraco.cms.businesslogic;
using umbraco.cms.businesslogic.web;
using umbraco.cms.businesslogic.media;

namespace UmbracoNewMediaFolderOnSave
{
 public class AddMediaFolderHandler : ApplicationBase
 {
 public AddMediaFolderHandler()
 {
 Document.BeforePublish += new Document.PublishEventHandler(Document_BeforePublish);
 }

 void Document_BeforePublish(Document sender, umbraco.cms.businesslogic.PublishEventArgs e)
 {
 if (sender.ContentType.Alias == "memberCompetition")
 {
 Media m = Media.MakeNew(sender.Text,MediaType.GetByAlias("Folder"), User.GetUser(0), 1078);

 sender.getProperty("mediaNodeID").Value = m.Id.ToString();
 sender.Save();
 }
 }
 }
}

In the above I have hard coded the parent Media Node (1078), however this could be referenced from an Application setting within the web.config file - this is what I will look to do once I have further refined my code.

Also note there is a property named "mediaNodeID" on the respective memberCompetition document type.

So this is a quite simple example, however I feel it could be useful for others as this type of situation could prove reasonably common.

 

The next steps for me is to create a front end file upload page that uploads images into the media folder of the chosen competition.

Happy coding

Nigel

 

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