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Oncheck of checkbox mark other checkbox as checked - updatecontext

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Posted on by RubySmith11

Hi,

I have 5 checkboxes (Metro, Regional, Remote, Select All, N/A). I have my app set so that clicking "N/A" resets the other 4 checkboxes to unchecked.

I'm trying to find a way so that clicking "Select All" sets the three (Metro, Regional & Remote) to checked.

I think this can be done with an updatecontext variable e.g.

Select All - OnCheck - UpdateContext({CheckboxVar1:true})

But I don't know how to update the default of the three (Metro, Regional & Remote) checkboxes to = CheckboxVar1, so they update to checked when the context variable is updated to true.

I've tried the following but get an error:

CheckboxVar1
"CheckboxVar1"
CheckboxVar1.Value

Any assistance appreciated!

Thanks,

Ruby

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Building Power Apps

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zmansuri 6,048 Super User 2024 Season 1 on at

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Let's say you have 5 checkboxes and 1 select all check box. You only want 3 of them to get selected when select all check box is checked.

Select All check box name: CheckBox1
Set Default of those 3 check boxes as CheckBox1.Value
This whatever value of select all, will be applied to those 3.

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RubySmith11 32 on at

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Hi @zmansuri ,

Thanks for your reply! My setup and ideal functionality is this:
oncheck of A, B & C patches true to values in a collection
onuncheck of A, B & C patches false to values in a collection. Also Reset the SelectAll checkbox (to unchecked) in case it was checked as if at least one of A, B and C no longer checked then SelectAll cannot be checked either - this is where I am getting an issue now
oncheck of SelectAll marks checkbox A, B & C as checked and patches true to the collection for all three
onuncheck of SelectAll marks checkbox A, B & C as unchecked and patches false to the collection for all three
I tried your solution and it works for the select all: A, B & C patch as true and mark checkboxes as checked.

However, if I Uncheck "A" for example, all boxes (A, B, C and SelectAll) visually become unchecked but the patched data still has "true" for B & C.

Screenshots below, hopefully that will make a but more sense!

Hoping for a solution that if I select "All", then uncheck "A", I still want "B" and "C" to be checked and patch true.

Alternatively, if this cannot be done I need "B" and "C" to patch false so that the screen matches the data patched.

Setup:
Checkbox names are:
CheckboxAll
CheckboxA
CheckboxB
CheckboxC
Button: OnSelect: ClearCollect(testCollection, {ID:1, A:false, B:false, C:false},{ID:2, A:false, B:false, C:false})

CheckboxAll:
OnCheck: Patch(testCollection, First( Filter( testCollection, ID =1 ) ),{A:true, B:true, C:true})
OnUncheck: Patch(testCollection, First( Filter( testCollection, ID =1 ) ),{A:false, B:false, C:false})

CheckboxA, B & C: (didn't want to paste 3 times)
OnCheck: Patch(testCollection, First( Filter( testCollection, ID =1 ) ),{A, B or C:true})
OnUncheck: Patch(testCollection,First( Filter( testCollection, ID =1 ) ),{A, B or C: false});Reset(CheckboxAll)
Default: CheckboxAll.Value

When I check "All", it works and all records patch as true

However, when I then UnCheck "A" only, all checkbox visually uncheck (because we are resetting "All") but in the collection ONLY "A" has been reset to false, "B" and "C" are still true

Thanks in advance!

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