Components and collection warning

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Posted on by KickingApps

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Greetings,

I opened an app I after setting on the shelf for a while and am now receiving the following warning:

'formula within canvas component manipulates collection...'

Anyone know why this throws a warning?

Thank you.

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Building Power Apps

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mdevaney 29,991 Moderator on at

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@KickingApps

Canvas components do not current support the use of Collections. You might not have received a timely warning about this because the app would have been in experimental/preview mode when you first built it. Early access starts in Feb 2020 and general availability is in April 2020.

Link To Documentation:

https://powerapps.microsoft.com/en-us/blog/components-available-in-preview/

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KickingApps 628 on at

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Ah - that makes sense. Thanks for the quick reply.

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JohnP 543 on at

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Any updates on this? It's almost may already. I've run into issues patching/updating collections inside a component

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JohnP 543 on at

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Update: Seems like collections are semi-supported after all in Components contrary to the documentation!

In the OnReset property I have the following formula (TreeData is an input variable of type table):
ClearCollect(ComponentTmp; Component1.TreeData)

It gives a warning, but the ClearCollect works! After this I can use Patch and UpdateIf like normal, except that it also give a warning 🙂 It's funny that Collect, ClearCollect, Patch and UpdateIf doesn't show up in the formula auto-complete, but it still works 🙂

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mike528 236 on at

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@mdevaney

I've created a component in my app that accesses a collection define within the app. Works perfectly. I want to now put that component into a component library, assumption being that the collection must exist in any app that wants to use it. Is this possible or does the component need to continue to reside only in my app.

Thanks!

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mdevaney 29,991 Moderator on at

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@mike528
How does it access the collection from your app.

Does it take the collection as a 'Table' type Input property? If yes, then in your new app you will need to pass a Table with a similar structure into component with different values as needed.

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