Form validation error message for length validations

[eluser]jonnny[/eluser]
A slight tweak makes it work with the set_message() function if you cant use the lang file.

I wanted generic messages, and %s would put the field name in, not the max length that I wanted.

Code:

function max_length($str, $val)
{
if(!parent::max_length($str, $val))
{
  $this->set_message('max_length', str_replace('[max]', $val, $this->_error_messages['max_length']));
  return false;
}
return true;
}

$this->form_validation->set_message('max_length', 'This field can not exceed [max] characters');