The update method lets users update the contents of a specific file. The payload for our PUT route is again JSON containing the name and contents of the file, as seen in the following example:

New-PolarisPutRoute -Path "/files" -Scriptblock {
    if (-not $request.Body.Name -or -not $request.Body.Content)
    {
        $response.SetStatusCode(501)
        $response.Send("File name and file content may not be empty.")
        return 
    }

    [void] (Set-Content -Path (Join-Path $Request.PolarisPath $request.Body.Name) -Value $request.Body.Content)
} -Force

Like the create method, the update method examines the request and returns a 501 error when the filename and contents are not set.