Add-ServiceNowAttachment: Use table name from param (if present) for attachment POST (#161)

* Use table name from param (if present) for attachment POST

* Make requested changes for PR 161

Author: natescherer

ServiceNow/Public/Add-ServiceNowAttachment.ps1

@@ -95,6 +95,13 @@ Function Add-ServiceNowAttachment {
             continue
         }
 
+        If (-not $Table) {
+            $tableName = $tableRecord.sys_class_name
+        }
+        else {
+            $tableName = $Table
+        }
+
         $auth = Get-ServiceNowAuth -C $Connection -S $ServiceNowSession
 
         ForEach ($Object in $File) {
@@ -111,15 +118,15 @@ Function Add-ServiceNowAttachment {
             # POST: https://instance.service-now.com/api/now/attachment/file?table_name=incident&table_sys_id=d71f7935c0a8016700802b64c67c11c6&file_name=Issue_screenshot
             # $Uri = "{0}/file?table_name={1}&table_sys_id={2}&file_name={3}" -f $ApiUrl, $Table, $TableSysID, $FileData.Name
             $invokeRestMethodSplat = $auth
-            $invokeRestMethodSplat.Uri += '/attachment/file?table_name={0}&table_sys_id={1}&file_name={2}' -f $tableRecord.sys_class_name, $tableRecord.sys_id, $FileData.Name
+            $invokeRestMethodSplat.Uri += '/attachment/file?table_name={0}&table_sys_id={1}&file_name={2}' -f $tableName, $tableRecord.sys_id, $FileData.Name
             $invokeRestMethodSplat.Headers += @{'Content-Type' = $ContentType }
             $invokeRestMethodSplat.UseBasicParsing = $true
             $invokeRestMethodSplat += @{
                 Method = 'POST'
                 InFile = $FileData.FullName
             }
 
-            If ($PSCmdlet.ShouldProcess(('{0} {1}' -f $tableRecord.sys_class_name, $tableRecord.number), ('Add attachment {0}' -f $FileData.FullName))) {
+            If ($PSCmdlet.ShouldProcess(('{0} {1}' -f $tableName, $tableRecord.number), ('Add attachment {0}' -f $FileData.FullName))) {
                 Write-Verbose ($invokeRestMethodSplat | ConvertTo-Json)
                 $response = Invoke-WebRequest @invokeRestMethodSplat