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Inconsistent behavior of related gallery - Canvas app in Dataverse for Teams

Hello! I've created a basic app on top of a 2 related dataverse tables (started with automatically deployed app when we select "from table" option). My app has only one screen, has the parent gallery along with a dedicated edit form as well as child gallery with it's own edit form as well. The problem I'm facings is as follows:

  1. I click the main gallery item, it's getting highlighted
  2. Child gallery displays related rows (1toMany relationship), with first row being highlighted by inbuild gallery behavior
    • items property is set to ParentGallery.Selected.ChildGallery
  3. I'm click button to enter "new form" mode of my second form
  4. I'm filling in the data and clicking button with onselect =  SubmitForm(SecondForm)
    • SecondForm has onsuccess property set to 
      UpdateContext({ CurrentPolicy: Self.LastSubmit, editPolicyMode: false, newPolicyMode: false })
      these are variables used to drive displaymode of various controls
  5. What happens now is unstable:
    1. case1: everything goes well, record is added and appears in ChildGallery
    2. case2: record is added in dataverse (I've added "table" control for troubleshooting and I can see there is a new row appearing) but it's not appearing in ChildGallery
      1. case 2a - I'm clicking different item in ParentGallery and clicking back the item for which I've added related record and now the gallery shows it
      2. case 2b - doing the same does not give any result immediately, item appears only after several attempts

Similar behavior is also when I'm removing related record, child gallery is not getting updated, even to the point that I can click a gallery button to remove same item again, which gives run time error, that item with this ID does not exists in a table. What am I missing? The parent gallery works flawlessly.

1 REPLY 1

So to add to the topic, I have created a copy of the flawed gallery, that shows all table elements (item property is just the child table name). I made a test scenario where all the child records are related with single parent item. The gallery that shows everything is updated properly. The gallery that shows items based on other gallery's selection is not updated. When adding Table layout element I can see that records are created properly with a populated lookup column. 

PawelJanczak_0-1709817851691.png

Very odd.

 

Update: I've been able to resolve this by changing the gallery Items property from galeryX.selected.datasource to Filter() function. It seems that galeryX.selected operation is cashing information from before the new form submission has happened. not quite sure on this, but can't explain it in any different way. I'll leave this thread open in case anyone can clarify the exact behavior.

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