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Power Platform Community / Forums / Power Apps / Validation in gallery ...
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Validation in gallery Control in canvas App

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Posted on by 270

1) I have a gallery , by default I am not able to see the first row, I have to click "+" to see first row. How can I make it visisble on the load of the page ?

 

JayashreeKrish_0-1629309689514.png

I have to click "+" for this to appear 

JayashreeKrish_1-1629309722537.png

 

2) The code in my Save &Close button is 

Once I click , the values are stored in a string and sent to another screen,

 

Set(AllPrincipalString,Concat(Gallery1.AllItems,Concatenate(TextInput1.Text,"; ",TextInput2.Text,"; ",TextInput3.Text,"; ",TextInput4.Text,"; ",TextInput5.Text,"; ",TextInput6.Text,"; ",TextInput7.Text,"; ",TextInput8.Text,"; ",TextInput9.Text," | ")));

Notify("Principal Added successfully!",NotificationType.Success);

Navigate(Screen1,ScreenTransition.Cover);

 

But I want the user to user to prevent from submitting if my TextInput1.Text, is empty how can i do that ?

 

 

 

 

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  • JayashreeKrish Profile Picture
    270 on at

    I tried with 

    ForAll(Gallery1.AllItems,If(Not(IsBlank(TextInput1.Text)),Edit,Disabled))

    in DisplayMode of Button

    But it shows - Enum expected

  • rubin_boer Profile Picture
    4,843 Super User 2024 Season 1 on at

    Hi @JayashreeKrish when you create the collection for the gallery, add blanks to it. By default, your gallery is empty and i assume you user collect to add the rows. 

     

    This will add a row with blank for two items

    ClearCollect(colMyInput,{p_name:Blank(), p_title:Blank()})

    add that to the OnVisible property of the screen. you will get this when the screen opens

    rubin_boer_0-1629313145269.png

    Now for the second part. you are using a gallery, is the plan to have more than one entry? once i know this i will suggest a way forward. your variable collecting the string that way from the gallery is a bit troublesome, id like to get more into that.

     

    hope this helps you

  • JayashreeKrish Profile Picture
    270 on at

    Thanks much @rubin_boer 

    My Question 1 is answered

     

  • Verified answer
    rubin_boer Profile Picture
    4,843 Super User 2024 Season 1 on at

    @JayashreeKrish may i suggest you set the displaymode of the button based on your rule.

     

    Select the display button and set its display mode to

    If(
     CountRows(
     Filter(
     YourGallery.AllItems,
     IsBlank(yourTextBox)
     )
     ) > 0,
     DisplayMode.Disabled,
     DisplayMode.Edit
    )

     

    now when its empty the user will get a disabled button

    rubin_boer_0-1629315876098.png

    and once there is data it will be active

    rubin_boer_1-1629315902164.png

     

    hope thi shelps

  • JayashreeKrish Profile Picture
    270 on at

    For my Question 2,

     

    Once my gallery is loaded,

    If I add value in Principal Name field , I should be able to save all the Principal Names in  a field in Screen 1 separated by semicolon 

     

    If it is empty I should  I should  not be able to save anything in   a field in Screen 1 , it should be blank as it is 

  • JayashreeKrish Profile Picture
    270 on at

    Thanks much @rubin_boer  

    Both my questions are answered 🙂

  • rubin_boer Profile Picture
    4,843 Super User 2024 Season 1 on at

    @JayashreeKrish you may want to investigate to save the collection itself and then patch your datasource with the collection. a good place will be the "+" icon. have a look at this whihc is a very good piece by @mdevaney PATCH Multiple Records In Power Apps 10x Faster - Matthew Devaney

  • JayashreeKrish Profile Picture
    270 on at

    Hi @rubin_boer  

     

    For my first question.

    I have a canvas app with two screen

    On screen 1, if i click on a button it will go to screen 2 which is having gallery

    In screen 2  i have a gallery , with clear , save&close , close button.

     

     

    on load of screen it should show the first entry if it is blank  (it is showing since i put the below code)

    JayashreeKrish_0-1629465992651.png

     

    But  if I  had entered some value ,

    when i come to screen 2 from screen 1 , it should show the value  

    JayashreeKrish_1-1629466038015.png

    But it is not shown as expected when i use the below code

    If I use   the below it is always blank - ClearCollect(colMyInput,{p_name:Blank(), p_title:Blank()})

    How do I avoid that ?

  • anupp Profile Picture
    2 on at

    is it possible to do validation for item level in gallery.

  • rubin_boer Profile Picture
    4,843 Super User 2024 Season 1 on at

    Hi there, may I suggest you open another topic you will be helped quicker this way.

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