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Power Apps - Power Apps Pro Dev & ISV
Answered

Dropdown from collection not updating or updating a different gallery item

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Posted on by 2
Hello,
 
I am fairly new to PowerApps so please pardon my ignorance. I am following a tutorial on Udemy and been confused by the behaviour of using a dropdown. You can see in the gif below that when I select an item from the dropdown, sometimes it  updates another gallery item instead of itself, sometimes it updates with the wrong value as well. That is the case whether I use either of these
 
Patch(colOrders, ThisItem,{Order: Self.Selected.Value}) or
Patch(colOrders, ThisItem,{Order: Dropdown1.Selected.Value})
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  • WarrenBelz Profile Picture
    148,805 Most Valuable Professional on at
    Dropdown from collection not updating or updating a different gallery item
    @DB-15121022-0​​​​​​​
    A quick follow-up to see if you received the answer you were looking for or if you need further assistance.

    Please click Does this answer your question if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it a Like.
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  • Verified answer
    WarrenBelz Profile Picture
    148,805 Most Valuable Professional on at
    Dropdown from collection not updating or updating a different gallery item
    Try
    Patch(
       colOrders, 
       LookUp(
          colOrders,
          Employee = ThisItem.Employee
       ),
       {Order: Dropdown1.Selected.Value}
    )
     
    Please click Does this answer your question if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it a Like.
    MVP (Business Applications)    Visit my blog Practical Power Apps    Buy me a coffee
  • DB-15121022-0 Profile Picture
    2 on at
    Dropdown from collection not updating or updating a different gallery item
    ColOrders is a collection
    ClearCollect(
        colOrders,
        {
            Employee: "Dane B",
            Order: "Hamburger"
        },
        {    
            Employee: "John Doe",
            Order: "Salad"
        }
        )
        
     
     
     
     
       
  • DT-16121015-0 Profile Picture
    2 on at
    Dropdown from collection not updating or updating a different gallery item
    What is ColOrders? U should have a primary index for each record.
    try ...
    Patch(
    colOrders,
    LookUp(
    colOrders,
    ID= ThisItem.ID
    ),
    {
    Order: Dropdown1.Selected.Value
    }
    )
  • WarrenBelz Profile Picture
    148,805 Most Valuable Professional on at
    Dropdown from collection not updating or updating a different gallery item
    What is in colOrders (what is the collect code) and do you have a unique identifier field in it ?

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