saveandpublishwithstatus from signalr 2 hub class

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Ole Andreas M. Olsen 23 posts 119 karma points

Mar 04, 2015 @ 22:56

Using Umbraco 7

I'm using SingalR 2 for a chat on my website, but when I call SaveAndPublishWithStatus with raisEvents = false, I still get an Exception "Object reference not set to an instance of an object."

This is my code

var _content = ApplicationContext.Current.Services.ContentService.CreateContent(_contentName, folderId, "_contentType");
ApplicationContext.Current.Services.ContentService.SaveAndPublishWithStatus(_content, 0, false);

Stack trace:

at Umbraco.Web.NotificationServiceExtensions.SendNotification(INotificationService service, IUmbracoEntity entity, IAction action, UmbracoContext umbracoContext, ApplicationContext applicationContext)
   at Umbraco.Web.NotificationServiceExtensions.SendNotification(INotificationService service, IUmbracoEntity entity, IAction action, UmbracoContext umbracoContext)
   at Umbraco.Core.EnumerableExtensions.ForEach[TItem](IEnumerable`1 items, Action`1 action)
   at Umbraco.Core.Events.TypedEventHandler`2.Invoke(TSender sender, TEventArgs e)
   at Umbraco.Core.Events.EventExtensions.RaiseEvent[TSender,TArgs](TypedEventHandler`2 eventHandler, TArgs args, TSender sender)
   at Umbraco.Core.Services.ContentService.SaveAndPublishDo(IContent content, Int32 userId, Boolean raiseEvents)
   at Umbraco.Core.Services.ContentService.SaveAndPublishWithStatus(IContent content, Int32 userId, Boolean raiseEvents)

The content is published, but it's not in the cache.

Oops: The documentis published, but not in the cache (internal error)

What am I missing? Seems like SaveAndPublishWithStatus(_content, 0, false) still raises events?

Edit: I should mention that I'm using Umbraco 7.2.2

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Alex Skrypnyk 6132 posts 23951 karma points MVP 7x admin c-trib

Mar 05, 2015 @ 01:38

100

Hi,

There is some great explanation of this exception - http://stackoverflow.com/questions/23558311/umbraco-get-an-error-when-try-to-save-content-using-contentservice

Thanks

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Ole Andreas M. Olsen 23 posts 119 karma points

Mar 05, 2015 @ 19:15

0

Hi Alex

The entry on StackOverflow says to use what I already do: Call the function with UserId = 0 and raiseEvents = false. However, I still get the error in SendNotification.

From StackOverflow:

Notice that applicationContext.Services.ContentService.Save(content, 0, false); contains two extra paramenters: 0 for the user id (zero is normally the admin user which is always present), and false for specifying that raiseEvents = false.

Using this approach should ensure that your code doesn't invoke the NotificationService, which then throws an exception.

I'm already using theese parameters.

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Ole Andreas M. Olsen 23 posts 119 karma points

Mar 08, 2015 @ 22:01
0
Well. Unable to find out why it sends notification when raiseEvents is set to false, this is my "solution":
```
            catch (NullReferenceException nre)
            {
                Log.Error(nre.Message);
                umbraco.library.RefreshContent();
            }
```
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Ole Andreas M. Olsen 23 posts 119 karma points

Mar 12, 2015 @ 21:25

Ok. This is weird? SaveAndPublishWithStatus sends notifications, but Save does not?

ApplicationContext.Current.Services.ContentService.SaveAndPublishWithStatus(_content, 0, false); // Throws NullReferenceException

ApplicationContext.Current.Services.ContentService.Save(_content, 0, false); // Is ok!

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