Fixed: FS#1221 - Remote : update user 'username unique' error.

Author: tbrehm

interface/lib/classes/validate_client.inc.php

@@ -36,7 +36,13 @@ class validate_client {
 	function username_unique($field_name, $field_value, $validator) {
 		global $app;
 
-		if($app->tform->primary_id == 0) {
+		if(isset($app->remoting_lib->primary_id)) {
+			$client_id = $app->remoting_lib->primary_id;
+		} else {
+			$client_id = $app->tform->primary_id;
+		}
+		
+		if($client_id == 0) {
         	$num_rec = $app->db->queryOneRecord("SELECT count(*) as number FROM sys_user WHERE username = '".$app->db->quote($field_value)."'");
             	if($num_rec["number"] > 0) {
                 	$errmsg = $validator['errmsg'];
@@ -47,7 +53,7 @@ function username_unique($field_name, $field_value, $validator) {
 					}
                 }
         } else {
-        	$num_rec = $app->db->queryOneRecord("SELECT count(*) as number FROM sys_user WHERE username = '".$app->db->quote($field_value)."' AND client_id != ".$app->tform->primary_id);
+        	$num_rec = $app->db->queryOneRecord("SELECT count(*) as number FROM sys_user WHERE username = '".$app->db->quote($field_value)."' AND client_id != ".$client_id);
 			if($num_rec["number"] > 0) {
             	$errmsg = $validator['errmsg'];
                 if(isset($app->tform->wordbook[$errmsg])) {