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  • andrew shearer 466 posts 581 karma points
    Nov 06, 2016 @ 20:28
    andrew shearer
    1

    Umbraco publishing API events: knowing what changed?

    Hello

    What is the official way in the Umbraco API to determine what changed during publication of a content item from the previous time it was published? For example, my content item has a RTE body text property, and I would like to know if it changed and how (i.e. before and after state so that I can perform my own comparison on the delta/differences).

    Thanks Andrew

  • Jonathan Richards 288 posts 1742 karma points MVP
    Nov 07, 2016 @ 13:58
    Jonathan Richards
    0

    Hi

    There is a method called IsPropertyDirty() that can be called to check if a property has changed. I know of nothing that can get you the original value, but you could roll your own code to do this

    Snippet

    using Umbraco.Core;
    public class Register : ApplicationEventHandler
    {
    
      protected override void ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
      {
        ContentService.Published += ContentService_Published;
      }
    
      private void ContentService_Published(Umbraco.Core.Publishing.IPublishingStrategy sender, Umbraco.Core.Events.PublishEventArgs<IContent> e)
      {
          foreach (var newContent in e.PublishedEntities.Where(x => x.IsPropertyDirty("bodyText"))
          {
             var originalContent = Umbraco.Web.UmbracoContext.Current.ContentCache.GetById(newContent.Id);
             // now compare   newContent.GetValue("bodyText") vs originalContent.GetPropertyValue("bodyText")
          }
      }
    }
    

    Cheers

  • andrew shearer 466 posts 581 karma points
    Nov 07, 2016 @ 21:18
    andrew shearer
    1

    great thank you. btw I think you meant the ContentService.Publishing rather than ContentService.Published event.

  • Jonathan Richards 288 posts 1742 karma points MVP
    Nov 08, 2016 @ 10:01
    Jonathan Richards
    0

    You are correct, you did specify publishing event. I was lazy and copied my code from a Published event, strangely I do also have a publishing event I could have used, but for some reason ignored it, because it was bigger.

    Oh well, I'm sure you can amend accordingly.

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