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Sorting/Add Columns Syntax Question

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Posted on by tagustin2020

Hello,

Yesterday I was working on adding sorting capability to my gallery. I got it all working, but when I clicked my Gallery nav button, PowerApps was no longer able to display my forms (see BlankForm.png). I think I know what happened. I replaced the name of my SharePoint list which is 'Tool Design Support Requests' in the Gallery Items formula with the name of the Collection I used to add columns for the sake of sorting in my Gallery Items formula. If I try switching it to the name of the SharePoint list, the formula breaks.

Gallery Items Formula:

SortByColumns(

Filter(colRequests,

StartsWith(

Title,

TxtSearchBox.Text

) && (ddStatus.Selected.Value = "Status All" || Status.Value = ddStatus.Selected.Value)

conSort,

If(

SortDescending,

Ascending,

Descending

)

App OnStart Collection:

ClearCollect(colRequests,AddColumns('Tool Design Support Requests',"StatusTxt",Status.Value,"AuthorTxt",Author.DisplayName,"PMTxt",PMPEPerson.DisplayName,"METxt",MEAssigned.DisplayName,"PCTxt",PercentComplete.Value)

The reason I added columns to the Collection was that I had a number of complex column types I wished to sort on. The data source for the forms is the Tool Design Support Requests SharePoint list and I would really like to keep it that way. I had all of the forms working before and I really like the ability to sort the gallery (see SortedGallery.png) so PLEASE tell me this is something easy to fix. I greatly appreciate you taking a look at it for me!

Teresa

Categories:

Building Power Apps

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WarrenBelz 154,494 Most Valuable Professional on at

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Hi @tagustin2020 ,

The reason is fairly simple, you cannot base a form on a collection, it must be based on a list. You can still have have your gallery to sort on the new fields, but the form just needs to based on 'Tool Design Support Requests' as the Data Source. The easiest way to set the Item would be

Lookup( 'Tool Design Support Requests', ID=YourGalleryName.Selected.ID )

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Drrickryp Super User 2024 Season 1 on at

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Hi @tagustin2020

Most likely the problem is in the Item property of the form. If the Items property of the gallery is different from the Item property of the form, the item property of the form must be changed to something like

Lookup(datasource,ID=Gallery1.Selected.ID)

The datasource of the Lookup must match the datasource of the form.

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tagustin2020 on at

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@WarrenBelz @Drrickryp

Thank you both for the prompt replies. My current OnSelect Formula for my Gallery nav button is:

Set(varRecord,ThisItem);Navigate('Edit Request Screen',Transition.None)

My Item reference for each form used to be varRecord. I changed the Item formula for each form to what you suggested and they are back in business so thank you(!), but is having varRecord on the nav button going to mess things up? Do I need to change it to something else? It seems to be working for now, but I'm not sure I trust it...

Thanks,
Teresa

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Drrickryp Super User 2024 Season 1 on at

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Hi @tagustin2020

It is unnecessary but it won't do any harm. You could even use it in the lookup formula.

Lookup(datasource,ID=varRecord.ID)

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tagustin2020 on at

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Great! Thanks for showing me how to incorporate the variable into the formula. I can rest much easier now that everything is working again 🙂

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