fix(issue): requester replaced by author on ticket update

hook.php

@@ -358,6 +358,8 @@ function plugin_formcreator_hook_add_ticket(CommonDBTM $item) {
 }
 
 function plugin_formcreator_hook_update_ticket(CommonDBTM $item) {
+   global $DB;
+
    if (!($item instanceof Ticket)) {
       return;
    }
@@ -374,6 +376,24 @@ function plugin_formcreator_hook_update_ticket(CommonDBTM $item) {
          'items_id'     => $id
       ]
    ]);
+
+   // find the 1st requester
+   $requester = $DB->request([
+      'SELECT' => 'users_id',
+      'FROM' => Ticket_User::getTable(),
+      'WHERE' => [
+         'tickets_id' => $item->getID(),
+         'type' => CommonITILActor::REQUESTER,
+      ],
+      'ORDER' => ['id'],
+      'LIMIT' => '1',
+   ])->next();
+   if ($requester === null) {
+      $requester = [
+         'users_id' => 0,
+      ];
+   }
+
    $issue->update([
       'id'                 => $issue->getID(),
       'items_id'           => $id,
@@ -385,7 +405,7 @@ function plugin_formcreator_hook_update_ticket(CommonDBTM $item) {
       'date_mod'           => $item->fields['date_mod'],
       'entities_id'        => $item->fields['entities_id'],
       'is_recursive'       => '0',
-      'requester_id'       => $item->fields['users_id_recipient'],
+      'requester_id'       => $requester['users_id'],
       'users_id_validator' => $validationStatus['user'],
       'comment'            => addslashes($item->fields['content']),
    ]);