Basic question regarding how to "re-use" a function

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Posted on by eschreibman

I have a Basic question regarding how to "re-use" a function

This is super basic, but I am stuck.

I have a screen with a gallery, and a Button, Icon and Text Box.

All three share the same Action onselect function.

Right now? I copy paste the function to each Action / Onselect box.

Obviously this is not a best practice.

Where should I put the function code and how can I reference it from the three objects?

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Building Power Apps

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@eschreibman

If this is in the Gallery and they are all the same, you can put the function in the OnSelect of the Gallery and then simply have your inner controls use Select(Parent) on their OnSelect actions.

Is your scenario more complex than that?
eschreibman 10 on at

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Yes, my gallery on select is a filter looking at a text box.
Select(Parent) currently goes to a 'details' page for the item.

The on select function I am not wanting to duplicate is a looong function to export the filtered list to excel by calling a power automate script.
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RandyHayes 76,299 Super User 2024 Season 1 on at

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@eschreibman

In this case, utilize a Toggle control.

My guess is that your actions are specific to data from the row of the gallery you are on. So, let's approach that way.

Place a toggle on the screen (you can set visible to false).

In the OnCheck action of the toggle, place your long formula (after refactoring, perhaps less long) and at the very end of the Formula add the following: UpdateContext({lclDoAction: Blank()})

Now for the Default property of the toggle, set the formula to !IsBlank(lclDoAction)

In the gallery, set the OnSelect of the controls you want this on to: UpdateContext({lclDoAction: ThisItem})

Now, back to the OnCheck action - change any references of ThisItem in your formula to lclDoAction (as this will now have "ThisItem" from the gallery).

Keep one thing in mind though...when you use a Toggle like this, it runs in parallel to your app. So, if you think there is a chance that someone might click one row and then another row before the toggle action is complete, then factor that into your formulas. Easiest way is to set the display mode properties of your controls in the Gallery to : If(IsBlank(lclDoAction), Edit, Disabled)