Error on selection

[ajaysdahibhate]

I have followed given steps and able to load the tree table but on selecting one node I am getting this error: Caused by: java.lang.IllegalArgumentException: requirement failed: Reference 'MyFirstModule.SelectionHelper_View' only accepts ids of type 'MyFirstModule.View' (Id '[MendixIdentifier:: id=3659174697238629 objectType=MyFirstModule.Node entityID=13]' is not allowed).

Any idea about this error?

[JelteMX]

What Mendix Studio Pro version are you using? I'll see if I can reproduce this. If not I might need a test-project from you to see what is going wrong

[ajaysdahibhate]

I am using Mendix Studio Pro 8.3.0. Also tried in 8.4.2.

[JelteMX]

Thanks. I will check it out

[JelteMX]

I have double checked it in my test-project with both 8.3.0 and 8.4.1, both seems to work fine. I will need to have a look at your project to see if you implemented it correctly. You can also send me a test-project that reproduces this exact issue.

[ajaysdahibhate]

Thank you Jelte. sending you the test project in which, this issue is occurring.

TreeTablePractice.zip

[JelteMX]

Thank you, I will have a look at it later today

[JelteMX]

Well, that was a short one ;-). You have the following problem:

• On Home_Web you use a Node as the context for you TreeTable
• In the widget you set the reference in the helper to a View
• The widget tries to set the reference to its context, which is a Node, not a View

That's the issue you're having, this is purely an implementation error. What I will do is take this as an example and see if I can improve the errors that the widget produces, as this might have just been overlooked.

[JelteMX]

This is the error you will be presented with in the new version of the widget, to make sure you can debug this issue.

[ajaysdahibhate]

Thank you for having a look. But I can only see one option while setting the "Reference to context", that is "MyFirstModule.SelectionHelper_View/MyFirstModule.View"

How should I resolve this?

[JelteMX]

If you would set an extra 1..* association from Node to SelectionHelper that would solve your problem

[JelteMX]

SelectionHelper *-->1 Node I mean

[ajaysdahibhate]

Thank you Jelte. It's working for me. It would also be helpful if you update the domain model screen shot in tree table documentation. Thanks for your help!

[JelteMX]

No, you are using Node as the context, I am using View as a context, see here. Anyway, good to be able to help. Good luck! :-)

[ajaysdahibhate]

Ohh ok.. My bad. Thank you!