Handle concurrent access inside Power Apps for SubmitForm() & Patch()

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Posted on 19 Mar 2024 19:50:09 by johnjohnPter

1,546 Super User 2024 Season 1

I am working on a Canvas application which is connected to SharePoint online lists and libraries. and i mainly use these methods to edit data:-

1) SubmitForm()

2) Patch()

currently there is not any mechanism to handle concurrent access, where currently if 2 users access an item to edit it, they both can save the form and the last user who submit the form will have his/her data inside the SharePoint lists. so is there a way to allow power apps canvas application to handle concurrent access, so it will show an error to the second user that the data he/she is viewing has been modified since it was retrieved?

I am thinking of doing a check before submitting or patching an item, where i will check the current item modified date with the modified date currently on SharePoint (by doing a LookUp()), if the modified are the same i will proceed with the submision if not then this mean that the item was modified since it was viewed... i am trying to avoid this manual method, and find a way to allow power apps to do this out of the box? is there a way?

Thanks

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johnjohnPter 1,546 Super User 2024 Season 1 on 20 Mar 2024 at 10:41:21

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Re: Handle concurrent access inside Power Apps for SubmitForm() & Patch()

@WarrenBelz yes seems the submitform will handle this , but using Patch will not.. so i will add the logic when doing the Patch()
WarrenBelz 147,193 Most Valuable Professional on 20 Mar 2024 at 02:59:31

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Re: Handle concurrent access inside Power Apps for SubmitForm() & Patch()

Hi @johnjohnPter ,

What you have posted is exactly what I do - lookup the modified date/time and compare it to the item current in the Form. Also (if you do not do this) the user using SubmitForm will generally get an error indicating that "a conflict exists with changes on the server", but it is obviously better that this does not happen.

To answer your question, there is no OoB process that controls this.

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