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iwonder
Impactful Individual
Impactful Individual

Filter ComboBox with Collection (for DefaultSelectedItems)

Thank you for taking the time to read my question.

 

I have a ComboBox for which I want to set the DefaultSelectedItems. My understanding is that this value must be a recordset not a table or a list or a single text value. Therefore I think I have to use Filter() to generate the recordset. I have a collection that has all the values I want to use as the filter criteria but I can't seem to piece this together.

 

ComboBox.Items = '[dbo].[FacilitiesActive]'

ComboBox Field = ["Facility"]

Collection = EditUserFacilities; Field = UserFacility

 

Here is what I tried:

ForAll(EditUserFacilities.UserFacility,Filter('[dbo].[FacilitiesActive]',Facility = UserFacility)) but that doesn't work.

 

I have this but I get a delegation warning on the equals sign:

Filter('[dbo].[FacilitiesActive]',Facility in EditUserFacilities.UserFacility)

 

Any direction would be very appreciated.

 

Thanks

16 REPLIES 16
Drrickryp
Super User
Super User

Hi @iwonder 

You will always get a delegation warning when using the "in" operator since it isn't delegatable.  As long as your recordset doesn't exceed the 2000k limit for the number of items in it, you can ignore the warning. 

RandyHayes
Super User
Super User

@iwonder 

Change your Items property formula to the following:

ForAll(EditUserFacilities As recs,
    LookUp('[dbo].[FacilitiesActive]',Facility = recs.UserFacility)
) 

 

By the way, a table is a recordset.  The above returns a table of all of the records from the datasource based on items in your collection.

 

I hope this is helpful for you. 

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iwonder
Impactful Individual
Impactful Individual

Hi @RandyHayes 

 

I want to be able to show all possible facilities but preselect the specific values. Do I really want to filter the Items property?

 

Process: Administrator finds a user in a Gallery of all Users. They click on the one they want which sends them to the screen with the form on it. The form's item is the record selected in the gallery. I want to be able to preselect the ComboBox values that equal the Facilities the user already has access to. Sorry if I was not very clear in my original post.

 

Thanks

RandyHayes
Super User
Super User

@iwonder 

My typo...I meant DefaultSelectedItems

 

 

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iwonder
Impactful Individual
Impactful Individual

All Good!

Should I do a Filter() instead of a LookUp as a user can have access to more than one Facility.

 

Thanks

RandyHayes
Super User
Super User

@iwonder 

No, that would produce a table in a record and will not work for what you are doing.

The key is this, DefaultSelectedItems expects a Table with Records that match (exactly) the schema of the Items property - anything different and there is NO selection.

So, the formula that I provided will return a table from the ForAll (that's really what a ForAll does) and each record will be an exact record match because you are looking it up directly from the datasource that is your items property.

 

The fact that a user can have access to more than one facility should be reflected by the Items property of the combobox.

 

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iwonder
Impactful Individual
Impactful Individual

Understood,

 

The formula you provided is only returning one match but when I view my Collection it has two rows...

 

For a test I put your formula as the Items source for a Gallery and I get 2 records in the gallery.

RandyHayes
Super User
Super User

@iwonder 

First - make sure your combobox still has allow multiple selections.  Many times while working with the combobox, PowerApps will revert that back to single selection.

 

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Digging it? - Click on the Thumbs Up below. Solved your problem? - Click on Accept as Solution below. Others seeking the same answers will be happy you did.
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iwonder
Impactful Individual
Impactful Individual

SelectMultiple = true

 

The formula with in is still working but has the delegation error. So I don't think any of the settings have changed.

 

Thanks again for al your help

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