Traverse to parent item that matches the given template id using Sitecore Powershell Extension

Question

I want to find the ancestor of an item that matches the given template id using Powershell. Can anyone help me in achieving this?

Scenario: I'm on Item A, I get the current item details using gi .. From item A I want to navigate upwards and find the ancestor with matching TemplateID.

Example:

Home

-- Parent 1 

  -- Parent 2

     -- Item A

Answer 1

If I understand your requirement, you want to find all items related to a known template ID. The phrasing is a bit confusing so it would be helpful if you can clarify the statement.

Example: Given an item, find all items matching the same Template ID which are children of the given item parent. In other words, find all items with the same template as Home which fall under the Content node (parent of Home).

$item = Get-Item -Path "master:\content\home"
$templateItem = Get-ItemTemplate -Item $item
Get-ItemReferrer -Item $templateItem | 
    Where-Object { $_.ItemPath.StartsWith($item.Parent.Paths.Path) }

Answer 2

If I understood right, which is 'find the ancestor that matches the current item's template' (the opposite of Michael's answer :-) ), you could use the below script:

$currentItem = Get-Item -Path '/sitecore/content/Home/'
$templateId = "" #Place your target template ID here
$currentItem.Name

$item = $currentItem
while($item.Parent){
    $item.Parent.Name
    if($item.Parent.TemplateId -eq $templateId){
        "done. item.Parent is what you're looking for"
        $item.Parent.Id #target item's ID
        break
    }
    $item = $item.Parent
}

You will have to set the $currentItem and $templateId to match your scenario

Answer 3

Finally found the way using the Item path and traversed the tree and found the template Id

$currentItemId = gi . #get current item 
$currentItemPath = $currentItemId.ItemPath #retrieve item path
$splitedArray = $path -split '/' #perform split operation 
$pathBuilder = ""
foreach($result in $splitedArray)
{

$pathBuilder = ($pathBuilder)+'/'+$result
$itemDetails = gi -Path master:/$pathBuilder
$templateId = $itemDetails.TemplateId
if($templateId -eq "")#pass the desired templateId here
{
 #..
}
}

Thanks a ton for @TamerM and @Michaell West