在Phalcon中扩展模型

Question

How would one make a child-parent relationship between Phalcon MVC models?

This is a DB schema I have in mind:

explain show;
+---------+--------------+------+-----+---------+-------+
| Field   | Type         | Null | Key | Default | Extra |
+---------+--------------+------+-----+---------+-------+
| id      | int(11)      | NO   | PRI | NULL    |       |
| length  | int(11)      | NO   |     | NULL    |       |
| title   | varchar(100) | NO   |     | NULL    |       |
+---------+--------------+------+-----+---------+-------+

explain show_episode;
+---------+--------------+------+-----+---------+-------+
| Field   | Type         | Null | Key | Default | Extra |
+---------+--------------+------+-----+---------+-------+
| show_id | int(11)      | NO   | PRI | NULL    |       |
| season  | int(11)      | NO   |     | NULL    |       |
| episode | int(11)      | NO   |     | NULL    |       |
+---------+--------------+------+-----+---------+-------+

Each element in show_episode is also present in show table, however there are show records which are only present in show .

The idea is to have two Phalcon Model classes:

class Show extends Phalcon\Mvc\Model
{
  public $id;
  public $length;
  public $title;
}

class ShowEpisode extends Show 
{
  public $season;
  public $episode;
}

How would I need to configure those models to be able to retrieve and save episode records like this:

// retrieve
$episode = ShowEpisode::findFirst(array("id"=>333));
echo $episode->season;
echo $episode->title;

// save
$episode->title = "New Title";
$episode->season = 3;
$episode->save();

Answer 1

Have you looked at;

class Show extends Phalcon\Mvc\Model
{
  public $id;
  public $length;
  public $title;

  public function initialize()
  {
    $this->hasMany("id", "Episode", "showid", NULL);
  }
}

Or something similar?