Sitecore PowerShell script to list all orphaned renderings

OrphanedRenderings.ps1

<#
.SYNOPSIS
    Lists the components (renderings) which are not or no longer linked to a page.

.NOTES
    Ramon Bruelisauer (original code frame)
    Manuel Fischer (adjustements und changes for using it with renderings)
#>

<##
# filter HasNoReferrers
# ---------------------
# Check whether the given item is not linked to any item.
#>
filter HasNoReferrers {
    param(
        [Parameter(Mandatory=$true, ValueFromPipeline=$true)] 
        $Item
    )
    Process { 
        $referrers = Get-ItemReferrer -Item $Item
        If ($referrers -eq $null -or $referrers.Count -eq 0) {
            $Item
        }
    }
}

<##
# filter IsRendering
# ---------------------
# Check whether the given item is a "Controller rendering" or a "View rendering".
#>
filter IsRendering {
    $templateName = $_.TemplateName
    
    if ($templateName -eq "Controller rendering") {
        $_
        Return
    }
    if ($templateName -eq "View rendering") {
        $_
        Return
    }
}

##
# Get the content root item from the master database
#
$database = "master"
$contentRootItem = Get-Item -Path "$($database):\content\Master\Home"

##
# Collect all renderings, which meet the following requirements:
# 1. the rendering is using the 'Controller rendering' or 'View rendering' template
# 2. the rendering is stored under \layout\Renderings\Master
# 3. the rendering does not have any referring items
#
$renderingsRootItem = Get-Item -Path "$($database):\layout\Renderings\Master"
$items = Get-ChildItem -Path $renderingsRootItem.ProviderPath -Recurse | IsRendering | HasNoReferrers

##
# Create the report output
#
if($items.Count -eq 0){
    Show-Alert "Es wurden keine Renderings gefunden, die nicht (mehr) mit einer Seite/Item verknuepft sind."
} else {
    $props = @{
        Title = "Unreferenzierte Renderings - Resultate"
        InfoTitle = "Renderings, die nicht mehr mit einer Seite/Item verknuepft sind"
        InfoDescription = "Zeigt die Renderings an, die nicht (mehr) mit einer Seite/Item verknuepft sind"
        PageSize = 25
    }
    $items | Show-ListView @props -Property @{Label="Rendering Name"; Expression={$_.DisplayName} },
            @{Label="Rendering Type"; Expression={$_.TemplateName} },
            @{Label="Controller"; Expression={$_.Controller} },
            @{Label="Created"; Expression={$_.__Created} },
            @{Label="Path"; Expression={$_.ItemPath} }
}

Close-Window