n00b application design question

[eluser]NogDog[/eluser]
Figured I'd follow up here with what I actually implemented (and it worked!) in case it helps anyone who stumbles upon this thread in a web or forum search. I won't bother with the views, as I think they're pretty trivial.

application/config/email.php:

Code:

<?php
$config['protocol'] = 'smtp';
$config['smtp_host'] = 'outgoing.example.net';
$config['smtp_user'] = 'username';
$config['smtp_pass'] = 'password';

application/controllers/email.php:

Code:

<?php
/**
* Email form
*/
class Email extends Controller
{
  
   /**
    * constructor
    * @return void
    */
   public function Email()
   {
      parent::Controller();
      $this->load->helper(array('form', 'url', 'html', 'my_html'));
   }
  
   /**
    * Display the form
    * @return bool;
    */
   public function index()
   {
      $this->load->view('email_form');
      return true;
   }
  
   /**
    * Process the form request
    * @return bool
    */
   public function send()
   {
      $this->load->library('form_validation');
      $this->form_validation->set_rules('name', 'Name',
            'trim|required|max_length[30]|callback_nobreaks');
      $this->form_validation->set_rules('email', 'Email',
            'trim|required|valid_email');
      $this->form_validation->set_rules('subject', 'Subject',
            'trim|required|max_length[70]|callback_nobreaks');
      $this->form_validation->set_rules('message', 'Message Text',
            'trim|required|max_length[2000]');
      if($this->form_validation->run() == false)
      {
         $this->load->view('email_form');
      }
      else
      {
         if($this->sendMail() == true)
         {
            $this->load->view('email_result');
         }
         else
         {
            $this->load->view('email_result',
               array('error' => "An unknown error occurred while trying to send your email."));
         }
      }
      return true;
   }
  
   /**
    * Send the email
    * @return bool
    */
   private function sendMail()
   {
      $this->load->library('email');
      $this->config->load('email', true);
      $this->email->initialize($this->config->config['email']);
      return $this->email->facade(
         '[email protected]',
         '[email protected]',
         $_POST['name'].' <'.$_POST['email'].'>',
         $_POST['subject'],
         $_POST['name'].' ('.$_POST['email'].") writes:\r\n\r\n".$_POST['message']
      );
   }
  
   /**
    * Ensure no newlines or carriage returns in text
    * @return bool
    * @param string $value
    */
   public function nobreaks($value)
   {
      if(preg_match('/[\r\n]/', $value))
      {
         $this->form_validation->set_message('nobreaks',
               'The %s field cannot contain line breaks');
         return false;
      }
      return true;
   }
}

application/libraries/MY_Email.php:

Code:

/**
* Extend the built-in email class to provide a single point of entry
*/
class MY_Email extends CI_Email
{
   /**
    * constructor
    * Loads custom config file and inits it
    * @return void
    */
   public function MY_Email()
   {
      parent::CI_Email();
   }
  
   /**
    * Provides one point to set the message values and send it
    * @return bool
    * @param string $to     To email
    * @param string $from   From email
    * @param string $reply  Reply-To email
    * @param string $subj   Subject
    * @param string $msg    Message text
    */
   public function facade($to, $from, $reply, $subj, $msg)
   {
      $this->to($to);
      $this->from($from);
      $this->reply_to($reply);
      $this->subject($subj);
      $this->message($msg);
      return($this->send());
   }
}