ORM relationships in Kohana

Question

I have the following tables:

users           { id, name }
events          { id, name }
user_events     { id, date, user_id, event_id }
user_summaries  { id, user_id, event_id, qty }

Table user_events stores all user events (there are many of the same types at different times) and user_summaries stores how many of each type of events occured to each user. The former gets only INSERT queries and the latter mostly UPDATE ones.

Of course both user_events and user_summaries have foreign keys to link with users and events tables. I want to represent this relation in my Models in Kohana. I have experience with foreign keys, but it's my first approach to both Kohana and ORM and I'm not sure really how to define my models there to represent these relations.

What I want to be able to do is basically this:

// I'm able to do this.
$user = ORM::factory('user', 1);
$user_events = $user->events->find_all();
$user_summaries = $user->usersummaries->find_all();

// I'm able to do this, too.
$event = ORM::factory('event', 1);
$event_users = $event->users->get_all();

// I don't know how to be able to do this:
$user_event = ORM::factory('userevent', 1);
$user_details = $user_event->user->find();
$event_details = $user_event->event->find();

My current models look like this:

# classes/model/user.php
class Model_User extends ORM
{
    protected $_has_many = array(
        'scores'    => array(),
        'usersummaries' => array(),
    );
}

# classes/model/event.php
class Model_Event extends ORM
{
    protected $_has_many = array(
        'scores'        => array(),
        'usersummaries' => array(),
    );
}

# classes/model/userevent.php
class Model_Userevent extends ORM
{
    protected $_belongs_to = array(
        'user'  => array(),
        'event' => array(),
    );
}

# classes/model/usersummary.php
class Model_Usersummary extends ORM
{
    protected $_belongs_to = array(
        'user'  => array(),
        'event' => array(),
    );
}

Currently calling:

$user_event = ORM::factory('userevent', 1);
$user_details = $user_event->user->find();

returns always the first user from users table, even though userevent has different user_id. I presume I need to change something in Model_userevent but I'd use with some help.

NB. I'm using Kohana 3.0.8.

Answer 1

Use $user_event->user (without find()). Models look fine, but may be you should manually define related models for usersummaries and userevents relations (Ko3 inflector may works wrong for these names)