Checking for empty field values in records in gallery

[Anonymous]

I have a Gallery that displays 1 or more records based on user selection.  The record(s) contain multiple fields, of which I need to verify that 2 fields (Asset ID, VIN) in all records displayed in the gallery contain values when the user presses a save button.  I have the following code in place and it works, but I'm curious if there is a more efficent way to do this, as it feels a bit clunky to me (creating a collection to hold the rowcounts of blank records).

Here is the screen:

Here is the code:

Clear(ValidateCollection);

//Create a new collection to check if all required fields are populated
ForAll(
    EquipmentGallery_DetailsScreen.AllItems,
    If(
        IsBlank(AssetIDTextInput_DetailsScreen.Text) || IsBlank(VINTextboxInput_DetailsScreen.Text),
        Collect(
            ValidateCollection,
            {RequestID: RequestIDDataLabel_DetailsScreen.Text}
        )
    )
);
//If we have rows, then we have blank required field entries
If(
    CountRows(EquipmentGallery_DetailsScreen.AllItems) <> 0,
    "Save code goes here", 
    UpdateContext({conValidationErr: true, conValidationMessage: "!"})
)

I use the context variable to drive user feedback for the required fields.  

[wyotim · Accepted solution]

Hey @Anonymous, here's the way I would go at it. In the EquipmentGallery_DetailsScreen gallery I would hide (Visible property = false) a text label with the following:

IsBlank(AssetIDTextInput_DetailsScreen.Text) || IsBlank(VINTextboxInput_DetailsScreen.Text)

which will produce a boolean (true/false) value for each row of the gallery (true if one or more of those text inputs are blank, false otherwise). Next, I would count how many of those text labels are true like so:

CountIf(EquipmentGallery_DetailsScreen.AllItems.lblBlankItems, lblBlankItems.Text = "true")

 where lblBlankItems is the name of the aforementioned text label. Note that the "true" is a text value and in double-quotes as we are checking the label's text, not for a true/false value in the typical sense. If this count is equal to zero, all of those fields have an entry. If not, one or more is missing an entry.

If you did something like :

If(
    CountIf(EquipmentGallery_DetailsScreen.AllItems.lblBlankItems, lblBlankItems.Text = "true") = 0,
    "Save code goes here", 
    UpdateContext({conValidationErr: true, conValidationMessage: "!"})
)

I think you could cut out the entire collection business altogether.

Let me know if that works for you or not; I'd be happy to follow up if needed!

[Anonymous]

Beautiful!  That was a brilliant idea and way less clunky than what I had.  Thank you!

[wyotim]

You are most welcome! Happy to be able to help!

[GDSI]

Worked great, Thanks!

[Frown]

It didn't work for me, but it taught me a new technique that will be valuable in future. Thank you!

[tu22]

I am try to check for empty rows within the gallery and count the empty rows but all the rows are empty but it shows false. what am i missing?