Powershell Split PSCustomObject if Property has multiple values while duplicating other values - powershell

Question

My current PSCustomObject
Invoice
Auction
Item ID
Date
18585208
X8C3E5651
K5W6L07795
Feb 18, 2021
99457377
U9V7E3466
J2X1D40777
Feb 14, 2022
91833688
D2A7O0545
T7Z6Y74627,H3B4U81837
Feb 23, 2021
76058226
K3N0T6688
G1D0B37486,Q3B8Z87471
Aug 21, 2021
65314754
C1C1F6626
Q8D2J82095
Dec 9, 2021
Rows 3 and 4 have multiple Item ID's which need to be split into their own rows but with the Invoice, Auction, and Date properties duplicated to match.
Intended output:
Invoice
Auction
Item ID
Date
18585208
X8C3E5651
K5W6L07795
Feb 18, 2021
99457377
U9V7E3466
J2X1D40777
Feb 14, 2022
91833688
D2A7O0545
T7Z6Y74627
Feb 23, 2021
91833688
D2A7O0545
H3B4U81837
Feb 23, 2021
76058226
K3N0T6688
G1D0B37486
Aug 21, 2021
76058226
K3N0T6688
Q3B8Z87471
Aug 21, 2021
65314754
C1C1F6626
Q8D2J82095
Dec 9, 2021
After a ton of research, I've tried multiple things but the logic is getting lost on me. I can select by property name and split each but have trouble on the new line portion.
My Object code:
$data = foreach ($foo in $AllMatches)
{
[PSCustomObject]#{
'Invoice' = ($data.Groups.Where{$_.Name -like 'Invoice'}).Value
'Auction' = ($data.Groups.Where{$_.Name -like 'Auction'}).Value
'Items' = ($data.Groups.Where{$_.Name -like 'Items'}).Value
'Date' = ($data.Groups.Where{$_.Name -like 'Date'}).Value
}
}

Answer 1

Your code is a bit unclear, but if you already have an array of PsObjects and need to split on a certain property, here's one way of doing that.
For demo, I'm using your example data as Here-String and convert that from CSV:
$dataToSplit = #"
Invoice Auction Item ID Date
18585208 X8C3E5651 K5W6L07795 Feb 18, 2021
99457377 U9V7E3466 J2X1D40777 Feb 14, 2022
91833688 D2A7O0545 T7Z6Y74627,H3B4U81837 Feb 23, 2021
76058226 K3N0T6688 G1D0B37486,Q3B8Z87471 Aug 21, 2021
65314754 C1C1F6626 Q8D2J82095 Dec 9, 2021
"# | ConvertFrom-Csv -Delimiter "`t"
$data = foreach ($item in $dataToSplit) {
$item.'Item ID' -split ',' | ForEach-Object {
[PSCustomObject]#{
'Invoice' = $item.Invoice
'Auction' = $item.Auction
'Item ID' = $_
'Date' = $item.Date
}
}
}
$data
Output:
Invoice Auction Item ID Date
------- ------- ------- ----
18585208 X8C3E5651 K5W6L07795 Feb 18, 2021
99457377 U9V7E3466 J2X1D40777 Feb 14, 2022
91833688 D2A7O0545 T7Z6Y74627 Feb 23, 2021
91833688 D2A7O0545 H3B4U81837 Feb 23, 2021
76058226 K3N0T6688 G1D0B37486 Aug 21, 2021
76058226 K3N0T6688 Q3B8Z87471 Aug 21, 2021
65314754 C1C1F6626 Q8D2J82095 Dec 9, 2021

Answer 2

Here you have an example of how you can do it, the following iterates over each object of the array and splits by comma the value of Item ID, if result is one elements it returns the element as is, else, it will iterate over the elements of splitting and update a copy of the row the current row.
foreach($obj in $array) {
if(($items = $obj.'Item ID'.Split(',')).Count -eq 1) {
$obj
continue
}
foreach($item in $items) {
$i = $obj.PSObject.Copy()
$i.'Item ID' = $item
$i
}
}