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We got duplicate dynamic placeholders assigned in Final Layout. How can I remove the duplicates from the Final Layouts in all the languages?

This is how we are filtering out the placeholders matching the regex. In $matches we get the collection of all the dynamic placeholders, the next step is to remove the duplicates and I want to avoid the nested looping to check and delete:

Get-Rendering -Item $_ | ForEach-Object {
    $rendering = $_;
    $matches = [regex]::Matches($_.Placeholder,'(-{[0-9a-fA-F]{8}[-][0-9a-fA-F]{4}[-][0-9a-fA-F]{4}[-][0-9a-fA-F]{4}[-][0-9a-fA-F]{12}}-0)')

    if ($matches.Success) {
        $newPlaceholder = $rendering.Placeholder

        $matches | ForEach-Object {
            $renderingId = $_.Value
        }

enter image description here

  • How can you tell they are duplicate? – Richard Seal Jun 12 at 21:33
  • If we look at the ItemID assigned, those are repeating after five and we see duplicate items on the page as well. – Amitabh Vyas Jun 12 at 21:35
  • What if there was another component mingled between the videos? How would you have known? Perhaps you know because the datasource is the same? – Michael West Jun 12 at 23:37
  • Correct Mike. We verified the data source is same for all duplicates. Also as I said same video is displaying twice in the right rail on the page. – Amitabh Vyas Jun 13 at 0:04
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Firstly, you can filter the renderings returned before you get to a ForEach-Object, by using a Where-Object (my regex skills are limited, so I've just copied yours):

$Renderings =  Get-Rendering -Item $CurrentItem -FinalLayout | Where-Object {$_.Placeholder -match '(-{[0-9a-fA-F]{8}[-][0-9a-fA-F]{4}[-][0-9a-fA-F]{4}[-][0-9a-fA-F]{4}[-][0-9a-fA-F]{12}}-0)'}

Then you can build an array of your duplicate criteria (in your case the combination of placeholder and datasource). If a value is already in the array, you can remove the rendering.

$UniqueValues = @()
$Renderings | ForEach-Object{
    $Identifier = -join($_.Datasource, $_.Placeholder)
        If($UniqueValues -Contains $Identifier){
            Remove-Rendering -Item $CurrentItem -Instance $_

        }
        else{
            $UniqueValues ,+= $Identifier
        }

}

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