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jsmit6
Frequent Visitor

Multi Select Combo Box filter using options from another Multi Select Combo Box

I'm having trouble linking a couple combo boxes in Power Apps and am unsure if I am running into a limitation or just am missing something. The scenario is that I'm customizing a SharePoint integrated form. I have a field whose options I would like to filter by a selection in another field.

 

List A is the Sharepoint list I'm customizing the form on. List B and List C are the lists lookup columns described below are pulling from.

 

Field A-B is the filter field, and Field A-C is the field being filtered. Field A-B is a multi-select combo box pulling in data from a SharePoint lookup field (lookup pulling from List B). Field A-C is also a multi-select combo box pulling in data from a SharePoint lookup field (lookup pulling from List C). List C is the source for lookup Field A-C and List B is the source for lookup Field A-B. List C is related to List B using a field from List B that corresponds to Field A-B (call it Field C-B).

 

Here is what I have so far: 

Filter(
    Choices(List A.Field A-C),
    Id in Filter(
        List C,
        Concat(Field A-B.SelectedItems, $"{Field A-B.Selected.Value}") = Field C-B.Value
    ).ID
)

 

This works partially. If one value is selected in Field A-B, then Field A-C filters accordingly. However, if two values are selected in Field A-B, Field A-C is blank. I think my issue is that my second filter is only getting the ID for one selection, but unsure of how to make this respond to multiple values.

 

I chose to use $-String to try to avoid having to address additional spaces/commas that would be added with Concat alone. Is there a way to make the current code work or am I approaching this wrong?

1 ACCEPTED SOLUTION

Accepted Solutions

hey @jsmit6 

 

lol fair enough xD i forgot to paste, sorry.

but now:

ClearCollect(SelectedValues, Field A-B.SelectedItems);
Filter(
    Choices(List A.Field A-C),
    Id in Filter(
        List C,
        Field C-B.Value in SelectedValues.Value
    ).ID
)

 

Let me know if my answer helped solving your issue.

If it did please accept as solution and give it a thumbs up so we can help others in the community.



Greetings

View solution in original post

4 REPLIES 4

hey @jsmit6 

 

can you try this please?

 

Let me know if my answer helped solving your issue.

If it did please accept as solution and give it a thumbs up so we can help others in the community.



Greetings

Thanks for the response! I'm not seeing a code snippet. Did it not save?

hey @jsmit6 

 

lol fair enough xD i forgot to paste, sorry.

but now:

ClearCollect(SelectedValues, Field A-B.SelectedItems);
Filter(
    Choices(List A.Field A-C),
    Id in Filter(
        List C,
        Field C-B.Value in SelectedValues.Value
    ).ID
)

 

Let me know if my answer helped solving your issue.

If it did please accept as solution and give it a thumbs up so we can help others in the community.



Greetings

After setting this up I get a delegation warning. I think this would be okay for my use case, however, when I make selections in Field A-B, Field A-C is blank. 

 

If relevant, I didn't have any collections set up. So I tried creating the collection in the OnChange property of the Field A-B combo box. I added the ClearCollect function to the SharePointIntegration OnSave property.

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