'$name' able to set default value for already existing related page Item

Question

Scenario: I have a template (say A), and having 50 page items already exist related to template type A.

Objective: Now have a requirement to add one more field for template A with default value '$name' into the standard value of this template.

Problem: Now if i'm going to create any new page item related to template A then it's working fine.

But for already existing 50 page item field added but field value is still showing '$name' instead of replace with page item's name.

Answer 1

You can use the powershell script below to update the values of your field. You have to replace Your field name with the field you need to change.

$dialog= Read-Variable -Parameters `
@{ Name = "media"; Title = "Path"; Root="/sitecore/"; Editor="item";Tab="General";},
 @{ Name = "contentType"; Title = "Content Type"; Root="/sitecore/templates"; Editor="item";Tab="General";} `
-Description "This script will edit field value " `
-Title "Field Value Update" -Width 500 -Height 500 `
-OkButtonName "Proceed" -CancelButtonName "Abort" 

if ($dialog -ne "ok")
 {   
   Exit
 }

cd $media.Paths.FullPath;$templateId = $contentType.ID

Write-Host "Process Starting";

Get-ChildItem -Recurse -Language * . |  ForEach-Object {
$this = $_
if($_.TemplateID -eq $templateId){     
if($_.Fields["Your field name"].Value -eq "$name")
  {
             $_.Editing.BeginEdit();
             $_['Your field name']=$_.Name;
             $_.Editing.EndEdit();
  }

 }    
}

Write-Host "Process Completed";

Answer 2

Standard Values will execute at the item creation. The Standard Values will not effect already existing items. You need to update values manually by writing custom script or you can use powershell module.