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Patch OnChange Items only - check box gallery

Hello,
I'm creating an app in the gallery style with 4 check boxes per row.

chelynne_0-1668530596957.png


Right now I can successfully patch all back to the sharepoint list with a button click but it's taking forever because I have 2500+ lines. I want to only patch the changes back to the sharepoint list. 

I've seen code with the toggle option that allows you to do 'on change'. 
I'm thinking the solution might be two separate bits of code for each box, in 'on check' and 'on uncheck' to patch them to a new collection, then the button only submits the items in that new collection?

Can I please get some help with this?

Thanks

6 REPLIES 6

@chelynne 

Create a collection in the OnVisible property of the screen: ClearCollect(collection,Defaults(datasource)).

In the both OnCheck and OnUncheck property of each checkbox paste this formula.

 

Patch(collection, ThisItem, {ID:ThisItem.ID
                             Supervisor:Checkbox1.Value, 
                             Leader:Checkbox2.Value,
                             H&SCommit:Checkbox3.Value
                             SpecWHMIS:Checkbox4.Value
                             }
)

 

This will add the changes to collection that can be used to just patch the items in the datasource. Use the actual column names in the formula above for the field names.  As long as the datasource and collection have the exact same column names and an ID column is included in collection,  a button with OnSelect property: Patch(datasource,collection) will make the changes.

 

 

Anthony_Dob
Continued Contributor
Continued Contributor

You could directly patch each record on 'Oncheck' and 'On Uncheck'. 

For Example: 
Oncheck and OnUncheck of SuperVisor:

Patch(Datasource,ThisItem,{Supervisor:Self.Value})

 

I definitely think this solution is on the right path, but it's not quite working. 
It has something to do with "

 ThisItem, {ID:ThisItem.ID

It seems like we're asking it to reference an ID in the collection list, but the list is currently empty (and should be until we push changes to it). 

I just tried the below using Default to create new lines, but it didn't work. Where CollectionChanges is my new collection, and OccAll is the combination record of all of my imported records :
Patch(CollectionChanges,
Defaults(OccALL)
{ Supervisor: 'Supervisor Checkbox_1'.Value,
Leader:'Leader Checkbox_1'.Value,
HSCommittee: 'HS Checkbox_1'.Value,
SpecWHMIS:'SpecWHMIS Checkbox_1'.Value
} )

OnCheck Supervisor Checkbox:

Set(
    varSuperVisor,
    true
);
Patch(
    OccALL,
    ThisItem,
    {Supervisor: varSuperVisor}
)

 

OnUncheck

Set(
    varSuperVisor,
    false
);
Patch(
    OccALL,
    ThisItem,
    {Supervisor: varSuperVisor}
)

 

Just tested on my side and this works. You can do this for each checkbox and patch each column oncheck and on uncheck.

Please accept this answer as a solution if this answer solved your question.

Best Regards,
Anthony

I would want to be patching the changes to CollectionChanges, not OccAll, otherwise I'm going to end up having to patch every record to SP, like I currently am. 

When I use this code on the OnCheck of supervisor, it is not giving me multiple lines in my new collection (CollectionChanges), regardless of how many Supervisor boxes I check. 

Do you know what could be causing this? 

Edit : It doesn't seem to be grabbing the ID number from the line, so it's not creating multiple lines, which is a problem, I believe.  It's only grabbing the true/false of the column. 

Anthony_Dob
Continued Contributor
Continued Contributor

With the code i provided you, only the lines where you edit the checkboxes will update to your datasource. This will patch changes on the fly instead of doing a big batch patch at the end. If you would still like to work with the collection, @Drrickryp his solution will work as you want

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