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Access Parent's Gallery Item in a Nested Gallery

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I currently have a nested gallery where the nested gallery needs to be aware of the columns of the item of the parent.

The structure may look something like this.

The hours text input box will get it's information from a Filter() from another table, where the ID of both the parent item and the child item in the galleries are needed. The parent being the TaskID and the child being the PersonID.

Is there something like, ParentItem.ID for galleries because it seems the only thing I can access seems to be Parent.AllItems which is not what is needed.

Thanks

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Building Power Apps

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yashag2255 24,769 Super User 2024 Season 1 on at

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Hi @Anonymous

Yes you can create a nested Gallery inside a Gallery control. There is a limitation though that you cannot have more than 1 nested gallery i.e. allowed only till 2 layers of hierarchy.

For doing so, you can use the Filter query, the only requirement is the attribute you want to nest should be of type table with either single or multiple tables.

Suppose your Main Gallery has Items, Filter(SPList1,Direction= "North")

and another attribute(location) of this SPList1 is of type table, in the nested gallery you can directly refer the items as: ThisItem.location

Hope this Helps!

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Community Power Pla... on at

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Hi @yashag2255 ,

Thank you for your response, the situation is that I need both the current item in the parent gallery and child gallery to do a filter for a value.

So it would be something like Lookup(Costs, parent=ParentID (from parent item) && child=ChildID).cost
where the parent is a Task item from the Tasks SPList and child is a person from Person's table for instance.

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Community Power Pla... on at

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Hi @Anonymous ,
Can you put a label (lblParentID) on the Gallery in the Parent that has Text:ThisItem.ParentID; and then use the lblParentID in the Lookup on the Child gallery - you can hide this label
Lookup(Costs, parent = lblParentID && child = ThisItem.ID)
Regards,
Andrew

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Community Power Pla... on at

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Hi @Anonymous,

This was exactly what I was looking for! Thank you so much!

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dmanoni1 24 on at

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Is there any other way? I can not use this in my situation and honestly this seems like a crap solution.

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HEATFreight 1,024 on at

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It worked for me. What are you trying to do? Gallery indices are weird in PowerApps.

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TxTechnician 98 on at

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Add an control in the parent gallery, like an icon, in the parent gallery. [We will call this "Icon7"] Set that icon to select the parent item (or better yet, set a variable to this item "Set(_varName,ThisItem)").

Then in the nested gallery set the icon (or whatever control you're using) to "Select(Icon7)".

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CodeMorgan 28 on at

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In the Items for the nested gallery item, add a column named "ParentID" as shown below:

Items = AddColumns( /*Child Collect field in Parent*/ ThisItem.ChildItems, "ParentID", ThisItem.ID)

Then anytime you need to reference the parent ID you can do so with "ThisItem.ParentID" in the nested gallery.

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gayanku 2 on at

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An easy solution is simply to use ThisItem
Lets say you have 2 nested Galleries A and B. A is parent, and B is inside (child)

To have specific items in B, set
items: Filter(collection, X= ThisItem.Y)

ThisItem.X is taken from the parent (A) and as a result, B will only have the filtered values related to that parent gallery item.

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Commonman 6 on at

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Thank you. Detailed clarification with the AddColumns( / function deserves the correct answer here.
This needs more documentation by MS.

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