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Cannot patch multi-select Choice fields - form saves only 1 record to List

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Posted on by CG-07102153-0

I'm using a patch function on a PowerApps form to update specific (Dropdown_ProjectName.Selected) project records in an underlying list.

The patch works great for the 'Budget percentage' field (TextInput), but I'm having trouble patching two multi-select Choice columns: 'Team composition', which is a Person field (containing DisplayName, ...), and 'Countries'.

When I use .SelectedItems as for the Team composition column, the form saves only 1 item, and not any others that have been selected.

The ForAll() formula I use for the Countries column - which appears to be a solution proposed elsewhere on this forum - produces multiple errors for me, so I might be using it wrong.
How an I fix this?

Patch('Project database', Dropdown_ProjectName.Selected, {   
        'Team composition': DataCardValue_TeamMembers.SelectedItems,
        'Countries': ForAll(DataCardValue_Countries.SelectedItems As aCountry, {Value: aCountry.Value}),
        'Budget percentage': Value(DataCardValue_BudgetPercentage.Text)/100
});

EDIT 1 (Additional Information):

In case it helps, the DefaultSelectedItems property of the Countries multi-select field is populated with existing items from the selected project, like so:

LookUp('Project database', 'Project name' = Dropdown_ProjectName.Selected.'Project name', 'Primary beneficiary (country / countries)').Value
Similarly, for Team members it's like this:
LookUp('Project database', 'Project name' = Dropdown_ProjectName.Selected.'Project name', 'Team member(s)').DisplayName
 
The Update property of the DataCard_Countries is set to DataCardValue_Countries.SelectedItems, the Update property of the DataCard_TeamMembers is set to DataCardValue_TeamMembers.SelectedItems
 
EDIT 2:
I have further experimented and found that the code below works ONLY when first editing a project, i.e. adding team members or countries (although it produces an error notification based on the code below, but the list updates correctly). However, it produces a server error when trying to edit the selected project again (such as removing 1 out of 3 team members, or adding 1 additional country to the existing 2).
 
 
Patch('Project database', Dropdown_ProjectName.Selected, { 
'Team composition': ForAll(DataCardValue_TeamMembers.SelectedItems, {
Claims: "i:0#.f|membership|" & ThisRecord.Email,
Department: ThisRecord.Department,
DisplayName: ThisRecord.DisplayName,
Email: ThisRecord.Email,
JobTitle: ThisRecord.JobTitle,
Picture: ThisRecord.Picture
}),
'Countries': ForAll(DataCardValue_Countries.SelectedItems, {
Id: ThisRecord.Id,
Value: ThisRecord.Value
}),
'Budget percentage': Value(DataCardValue_BudgetPercentage.Text)/100
});
If(
// check if there were any errors when the test score was submitted
!IsEmpty(Errors('Project database')),
// if true, show any error message
Notify(
Concat(Errors('Project database'), Column&": "&Message),
NotificationType.Error
),
// else, reset form fields and how success message
Notify("Record successfully updated.", NotificationType.Success);
Reset(Dropdown_ProjectName);
);

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Building Power Apps

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abc 123 789 Moderator on at

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Your Patch() function syntax seems incorrect.

Patch('Project database', Dropdown_ProjectName.Selected, ...

From: Patch function - Power Platform | Microsoft Learn

Adding a new item:

Patch( Customers, Defaults( Customers ), { CustomerName: "Contoso" } )

Updating an existing Item

Patch( Customers, Filter( Customers, CustomerName = "Contoso" ), { Phone: "1-212-555-1234" } )

I would expect it to be either:

Patch('Project database', Defaults('Project database'), ...

or

Patch('Project database', Filter('Project database', SomeFieldofMine.Value = Dropdown_ProjectName.Selected.Value), ...

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CG-07102153-0 23 on at

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Thank you for this suggestion, @abc_123.

I'm looking to update an existing row, and there doesn't seem to be an issue with this in my patch statement by using Dropdown_ProjectName.Selected, because the correct row is being updated (a) every time I patch the TextInput field ('Budget percentage'), and (b) whenever the 'Team_composition' and 'Countries' fields are still empty in the underlying list and I patch them for the first time.

UPDATE:
I changed how the patch function identifies the specific record to be updated, but I still get an error message saying "Network error when using Patch function: The requested operation is invalid."

What am I doing wrong?
Updated code below:

Patch(
'Project database',
LookUp('Project database', 'Project name' = Dropdown_ProjectName.Selected.'Project name'),
{
'Team_composition': ForAll(DataCardValue_TeamMembers.SelectedItems,
{
Claims: "i:0#.f|membership|" & ThisRecord.Email,
Department: ThisRecord.Department,
DisplayName: ThisRecord.DisplayName,
Email: ThisRecord.Email,
JobTitle: ThisRecord.JobTitle,
Picture: ThisRecord.Picture
}),
'Countries': ForAll(
DataCardValue_Countries.SelectedItems,
{
Id: ThisRecord.Id,
Value: ThisRecord.Value
}
),
'Budget_percentage': Value(DataCardValue_BudgetPercentage.Text) / 100
}
);

If(
// check if there were any errors when the test score was submitted
!IsEmpty(Errors('Project database')),
// if true, show any error message
Notify(
Concat(
Errors('Project database'),
"Column: " & Column & ", Message: " & Message
),
NotificationType.Error
),
// else, reset form fields and how success message
Notify(
"Record successfully updated.",
NotificationType.Success
);
Reset(Dropdown_ProjectName);

);

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CG-07102153-0 23 on at

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I have found the solution. The issue was with the DefaultSelectedItems properties of the 'Countries' and 'Team composition' fields which were defined as:

LookUp('Project database', 'Project name' = Dropdown_ProjectName.Selected.'Project name', 'Countries').Value

LookUp('Project database', 'Project name' = Dropdown_ProjectName.Selected.'Project name', 'Team composition').DisplayName

This returned the wrong data type. Removing '.Value' and '.DisplayName' fixed the issue and allowed me to implement the patch simply like this:

Patch(

'Project database',

LookUp(

'Project database',

'Project name' = Dropdown_ProjectName.Selected.'Project name'

),

{

'Team composition': DataCardValue_TeamMembers.SelectedItems,

'Countries': DataCardValue_Countries.SelectedItems,

...

}

);

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