Powershell Script per rimuovere la version da un campo

Dopo essermi scontrato di nuovo con questo problema (che è micidiale nel caso dei Taxonomy o Managed Metadata Fields), ecco uno script PowerShell per rimuovere la version da un campo anche se è già contenuto in un content type. PowerShell rules!! :-)

$name = "qui ci va l'internal name del campo"

$url = "qui ci va l'url della sitecollection"

Write-Host ("Remove Version flag from '{0}' in '{1}'" -f $name, $url)

$web = Get-SPWeb $url

$web = $web.site.RootWeb

$field = $web.Fields.GetFieldByInternalName($name)

if (!$field) {

    Write-Host "> Can't find field!" -ForegroundColor:Red

    break

}

[xml]$xml = $field.SchemaXml

$contenttypenames = $web.ContentTypes | ? { $_.FieldLinks | ? { $_.Id -eq $field.ID } } | ? { $_.Parent.Fields.ContainsFieldWithStaticName($field.InternalName) -eq $false } | % { Write-Output $_.Name }

$contenttypenames | % {

    $contenttypename = $_

    write-host ("> Remove field link from {0}..." -f $contenttypename) -ForegroundColor:Green

    $ct = $web.ContentTypes[$contenttypename]

    $ct.FieldLinks.Delete($name)

    $ct.UpdateIncludingSealedAndReadOnly($true)

}

$field = $web.Fields.GetFieldByInternalName($name)

if ($field) {

    Write-Host "> Deleting existing field..." -ForegroundColor:Green

    $web.fields.Delete($name)

}

Write-Host "> Adding field (version removed)..." -ForegroundColor:Green

$xml.Field.RemoveAttribute("Version")

$web.Fields.AddFieldAsXml($xml.OuterXml) | Out-Null

$contenttypenames | % {

    $contenttypename = $_

    Write-Host ("> Adding field link to {0}..." -f $contenttypename) -ForegroundColor:Green

    $field = $web.Fields.GetFieldByInternalName($name)

    $fieldlink = New-Object Microsoft.SharePoint.SPFieldLink($field)

    $ct.FieldLinks.Add($fieldlink)

    $ct.Update($true)

}