Re-populating the form

[eluser]ElShotte[/eluser]
Yeah you don't need to use the Form helper, if you don't, $this->post->input('field_name') won't be available, but you can achieve the same by doing let's say:

<input type="text" name="field_name" value="<?=$_POST['field_name']?>" />

But if you have any dropdown menus it will get really tricky, you will have to write your own function and in my opinion you would simply be better of using the Form helper. What are you trying to check for in the username?