HOW WE CHANGE/UPDATE SITECORE RENDERING BY POWERSHELL SCRIPT

In some cases, we are required to change/replace the components. Set the start path for the items that are to be updated, and it retrieves all child items under that path that are in the same language. For each item, the script retrieves the rendering instances by using Get-Rendering and loops through them. If the rendering instance has a Mentioned Rendering ID, the script updates/Switches it with the target rendering ID using Switch rendering. Overall, this script can be used to update the renderings on multiple items more efficiently by using bulk updates.

INPUT

# Set the startPath as per the requirement$startPath = '/sitecore/content/xyz/'$items = @()# Get all child$sites = Get-ChildItem -Path $startPath$sites | ForEach-Object{  $currentSite = $_  Get-ChildItem -path ($currentSite.Paths.FullPath + "/Presentation/Partial Designs") -language * -Recurse |  Where-Object { $_.TemplateName -eq 'Metadata Partial Design' } |  ForEach-Object { $items += $_ }}$sourceRenderingId = "{E3E3F484-0C27-42CC-9F36-E2D33430C8CD}"$targetRenderingId = "{54EDCCF1-F20E-43BE-92FC-5768A152C27D}"$defaultLayout = Get-LayoutDevice "Default"foreach($item in $items){  $sourceRenderings = Get-Rendering -Item $item -Device $defaultLayout | Where-Object { $_.ItemID -eq $sourceRenderingId }  $targetRendering = Get-Item -Path "master:" -ID $targetRenderingId | New-Rendering  # Replace all instances of the old rendering with the new rendering  foreach($sourceRendering in $sourceRenderings) {   $item | Switch-Rendering -Instance $sourceRendering -Device $defaultLayout -NewRendering $targetRendering}}