Use ThisItem between screens

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Posted on by Humanity

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Canvas App

Independent Inputs

Here is 2 screens.... I need to get the questions screen to match whichever item is gallery selected.

I have tried setting a global variable using Set(VariableName, ThisItem) & found that did nothing.

I don't understand how the gallery ThisItem can be used as a way to even get an independent label on the same page to populate with it either, so I am thinking it doesn't work like drop down selections do.

Please help... I need to get the form page to work, including have the Save Button know where to post it.

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Building Power Apps

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BusyIntelligence 321 on at

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Not sure if I understand you well, but I think ThisItem can only b used within a specific row of the gallery.
If you want to refer to an item in another gallery you could use the Selected status.
So, e.g., if the gallery with the bulbs is called glyBulbs, when the user selected one of the bulbs you can refer to that item (even from another screen) with:

glyBulbs.Selected.BulbType or whatever field or object is on that line of the gallery.

This what you mean?

Kind regards,
Maurits
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mdevaney 29,993 Moderator on at

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@Humanity

To explain how ThisItem works:

If you put this code in the OnSelect property of your gallery or a button in your gallery...

Set(VariableName, ThisItem)

Then put this code in the Text property of a label to see the ID number of what you selected

VariableName.ID

If you want to filter based on some column in ThisItem you would use this code in the Items property of the question gallery

Filter(question_datasource_name, QuestionTopic = ThisItem.QuestionTopic)

If you need something more specific to your problem please post the data behind it.

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Humanity 278 on at

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@mdevaney
Sorry you were correct... I must of had a delay the first time around. But it won't let me use them for saving.

@Maurits
Your way of doing it does not allow for OnSelect to work. I expected it to, but it runs into the same problem the ThisItem has when taying to make a save button out of it.

Do either of you know how to generate a unique ID column, so I can make up for MS not letting Sheets work fully?
Humanity 278 on at

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@Mauz is correct !!! They made us a shortcut.

Thank you Mauz
Humanity 278 on at

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@mdevaney @Maurits

Am I missing something?
BusyIntelligence 321 on at

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Hi, when you need a unique id you could use the GUID() function. When you use GUID() just like this, without anything between the brackets, you get a unique GUID .
Humanity 278 on at

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I like the idea. To use it I need to make some way to tell if a record has one or not. So a new one is generated for every new record. But it is not accepting this?
BusyIntelligence 321 on at

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That should work @Humanity
It's just a label isn't it? Is there an errormessage?
You might try to put GUID() in Text() to forecome fieldtype issues, so Text(GUID()) instead of just GUID()
Humanity 278 on at

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@Maurits

It says invalid argument type.
Humanity 278 on at

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That is a text input.