Validation on delete in Editable List component - KX Learning Hub

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Validation on delete in Editable List component

Posted by Swapnil on September 3, 2024 at 6:37 am
Hi Team

How do we return an error dialog back to the client while doing validation on delete in an editable list ?

So in the update query section we call our analytic say deleteId which does some validation whether the user is allowed to delete the id or not.
If the user is not allowed, we want to show an error dialog back to the client

The analytic throws an exception but that does not get propagated to the client as an error dialog
```
{[dgAdd;dgUpd;dgDel]
 /this sample requires keyed table: 
/ table's key matches 'Key' in this dialog 
/ exampleQueries:: id xkey ([] id:int$();name:symbol$();note1:symbol$()); 
/ exampleQueries upsert(0i;dummy;`);

if[count[dgUpd]>0;`screenerFilters upsert flip dgUpd]; 
if[count[dgDel]>0; deleteId[dgDel[`id]]; 
/generate unique ids for new items 
if[count[dgAdd]>0;`screenerFilters upsert flip dgAdd]; }
```
jlucid replied 2 weeks, 3 days ago 2 Members · 1 Reply
- kxdashboards
1 Reply

jlucid

Member
October 30, 2024 at 3:03 pm
Looking at the arguments to your function, it looks like you are trying to run an update command in a KxDashboards Data Grid component, is that correct?

First of all, to throw an error you can use signal (‘), that what works for me. if[notValidUser;’ErrorMessage];

This should generate a small popup on screen when the user presses submit. Here’s the thing though, the full text “ErrorMessage” may not appear on screen, depending on whether the bug I mentioned below was fixed or not.

I had a similar issue as you in the past, where the error message was being returned but only the first character of the error messages was being displayed (“E” in this case), see link below for issue and fix. I never got a response on this query so I dont know if it was fixed properly in Kx Dashboards.

https://learninghub.kx.com/forums/topic/dashboards-direct-how-to-specify-an-error-message-on-data-grid-edit-failure/#post-34947
- This reply was modified 2 weeks, 3 days ago by jlucid.
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Dashboards Direct - How to specify an error message on Data Grid edit failure - KX Learning Hub
June 30, 2023 - Dashboards Direct - How to specify an error message on Data Grid edit failure - I have a Data Grid component with Edit mode enabled, users can

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