Add validation to prevent duplicate NIK entries in user data

objectx/obj_data/data_user.php

@@ -368,6 +368,14 @@
                           sectionname='$sectionname',iddept='$iddept',deptname='$departmentname',uby='".$_SESSION['nik']."',udt=now()
                       where id='$id'";
             }
+            else{
+                $qrychk="select id from ".DB_APORTIL.".tbl_employee where nik='$nik' and isdeleted=0 order by id asc limit 1";
+                if($this->fn_row_isexists($qrychk))
+                {
+                    echo "failed|Error Found : Nik <b>$nik</b> already exists";
+                    return false;
+                }
+            }
 
             if($this->executequery($qry)){echo "ok|";return true;}
         }