Libraries or Models, favouritism?

[eluser]Hyra[/eluser]
Well yes.

So, again .. the phone number example. Would this be the way to set it up?

[Controller] contact.php

Code:

// Get posted vars, validation, etc.

// Call a library
$this->load->library('val_phone');
$is_valid_phone = $this->val_phone->check($this->validation->phone_number);

// Do something according to BOOL

[Library] val_phone.php

Code:

function check($nr) {
  // !! This is dodgy! OPTIONAL USE OF MODEL?
  $valid = $this->some_model->getRanges('phone_ranges');
  if(in_array(substr($nr, 0, 3), $valid)) {
     if(reg_exp('#4/\g\n.gdd[3]d')) {
        return TRUE;
     }
  }
  return FALSE;
}

[Model] not_sure_what_to_call_it.php

Code:

function getRanges($from) {
   // Do database stuff
   return $array;
}

So this would mean the library depends on a model as well, thus not making it very portable. That's what was confusing me. Should the library contain database actions like the above, or should it really really go into a model, even though it only contains one simple database function.

Putting the db query inside the library would make it far more plug 'n play.