Extending Model class

[eluser]marcalj[/eluser]
...well I will explain in more detail the problem.

I have a library (CI model replacement):

Code:

class CMS_Model extends Model
{
    var $sTableName;
    
    function CMS_Model()
    {
        // Call the Model constructor
        parent::Model();
    }
    
    function getNumRows()
    {
        return $this->db->count_all( $this->sTableName );
    }
...
}

located in " APPPATH . /libraries "

So all my model classes extends from CMS_Model:

Code:

class Projecte_model extends CMS_Model
{
    function Projecte_model()
    {
        // Call the Model constructor
        parent::CMS_Model();
        
        $this->sTableName = "projecte";
    }
...
}

This is how I make the controllers "generation".

The problem is that I have to include the file of CMS_Model definition and I don't why.

Now I suppose is better explanation

Thanks.