Form validation error message for length validations

[eluser]jonnny[/eluser]
Even better:

Code:

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

I was occasionally getting errors because $this->_error_messages['max_length'] did not exist (the times when I had not manually changed the error message in advance). This fixes that.