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kky1
Advocate V
Advocate V

Disable/suppress GroupBy error OnStart

Hello - I'd like to suppress a GroupBy error that is happening when my app loads because I have this code in my app's OnStart:

 

ClearCollect(colGroupedMaterials,GroupBy(v_NomMaterials,"Award_ID", "AwardName", "DATA"));

 

kky1_0-1679503333041.png

 

Following Shane Young's tutorial on Error handling https://www.youtube.com/watch?v=Zc4mE_4U7lI

I put this code into the OnError property of my app, hoping to suppress this error but patch all the other errors to a list:

 

If(!("The first argument to the GroupBy function cannot be blank." in FirstError.Message),Patch(
PowerAppsErrorMessaging,
Defaults(PowerAppsErrorMessaging),
{
Title: Left(FirstError.Message,255),
ControlName: FirstError.Source,
AppName: "AwardsApp",
ScreenName: "OnStart",
user: varUserID
}
))

 

But the error is still visible. How can I suppress it?

Thank you in advance

@kky1 

2 ACCEPTED SOLUTIONS

Accepted Solutions
Drrickryp
Super User
Super User

@kky1 

I must say, I'm mystified.  To help troubleshoot, could you move 

ClearCollect(colGroupedMaterials,GroupBy(v_NomMaterials,"Award_ID", "AwardName", "DATA"));

from the OnStart of your app to the OnVisible of the screen and see if you still get an error?

View solution in original post

kky1
Advocate V
Advocate V

Hi @Drrickryp ! I wanted to circle back and mark this post with a solution. Your questions helped me to go back to the data source that is getting grouped OnStart (a sql view) and look at the tables that created that view.

 

In this case, I noticed AwardName was allowing nulls in one of the tables that was building the view v_NomMaterials. Once I changed the setting of this column to "not null" the error went away:

kky1_0-1679840684246.png

Thank you @Drrickryp for helping me to focus on the data source to solve this one. have a fantastic day!

Kendra

View solution in original post

7 REPLIES 7
Drrickryp
Super User
Super User

@kky1 

I reproduced your formula but do not get an error.  Are you certain that the "Award_ID" is correct and has data.  Check by typing ClearCollect(colGroupedMaterials,GroupBy(v_NomMaterials,

and see what Intellisense suggests to follow the last ","

kky1
Advocate V
Advocate V

Thank you @Drrickryp for responding so quickly. Here is what I see when I try your formula:

kky1_0-1679510175767.png

But then when I did a Run on Start, I saw this message:

kky1_1-1679510256383.png

Which is confusing bc the data source is a view in Sql:

kky1_2-1679510349963.png

 

 

Drrickryp
Super User
Super User

@kky1 

I must say, I'm mystified.  To help troubleshoot, could you move 

ClearCollect(colGroupedMaterials,GroupBy(v_NomMaterials,"Award_ID", "AwardName", "DATA"));

from the OnStart of your app to the OnVisible of the screen and see if you still get an error?

kky1
Advocate V
Advocate V

Sure thing. So I moved the formula to my OnVisible of the home screen and this might help troubleshoot... when I did Run on Start and navigated to the Faculty Awards Screen - no data was showing in my gallery. The staff awards and student award screens displayed just fine though. 

kky1_0-1679511642897.png

The data source for the galleries on each screen are views in sql bc there is overlap if an award can be for staff or students, etc. But the queries in sql have all the same columns. 

kky1_1-1679511701621.png

kky1_2-1679511770278.png

 

 

kky1_3-1679511807461.png

When the user selects an award from the gallery (with the sql view datasource), it navigates to an award detail page. This page has the grouped collection in a gallery that has a nested gallery of another grouped collection from the "DATA" field. 

kky1_4-1679512421028.png

I used the 2nd grouped collection to list details about the nomMaterials and sort the order they are listed.

kky1_5-1679512525324.png

 

 

 

kky1
Advocate V
Advocate V

Hmm..your question got me wondering if the error is because in my nested gallery, there were 4 items that do not have a Material Sort order bc the award is inactive? I went ahead and modified my formula as below and am testing now to see if that solves this issue.

kky1_0-1679513457869.png

 

kky1
Advocate V
Advocate V

Hi @Drrickryp ! I wanted to circle back and mark this post with a solution. Your questions helped me to go back to the data source that is getting grouped OnStart (a sql view) and look at the tables that created that view.

 

In this case, I noticed AwardName was allowing nulls in one of the tables that was building the view v_NomMaterials. Once I changed the setting of this column to "not null" the error went away:

kky1_0-1679840684246.png

Thank you @Drrickryp for helping me to focus on the data source to solve this one. have a fantastic day!

Kendra

NicolleAbraham
Frequent Visitor

Hi, I am experiencing the same error but with large data in a SharePoint list that I am using.

Do you have any suggestions on how I can enforce the "not null" on this data source?

 

TIA

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