/**
* Loads all recommended events for a given user. It is limited to a number of results
* otherwise the web server will fail.
*
* @param $user_id int
* @param $num int number of elements to retrieve
* @param $offset int offset
*
* @return array of Event|null
*/
public function getUserRecommendations($user_id, $num = 20, $offset = 0)
{
/*
$events = $this->db->getByEqCondsAndLimitedAndOrdered(
'events.*',
self::ENTITY_NAME . " RIGHT JOIN events ON (".self::ENTITY_NAME.".event_id = events.event_id) ",
array(self::ENTITY_NAME . '.user_id' => $user_id),
$num, $offset, 'events.event_id'
);
*/
$query = "\n SELECT e.*, ui.interested, ui.not_interested\n FROM " . self::ENTITY_NAME . " ur JOIN (events e LEFT JOIN user_interest ui ON (e.event_id = ui.event_id)) ON (ur.event_id = e.event_id)\n WHERE ur.user_id = '{$user_id}'\n AND ui.user_id = '{$user_id}' OR ui.user_id IS NULL\n ORDER BY e.event_id\n LIMIT {$num} OFFSET {$offset};";
$events = $this->db->executeQueryAndFetch($query);
if ($events === false) {
return false;
}
// Retrieve all events as Event Object
$tmp = new \ReflectionClass('App\\Model\\Event');
foreach ($events as $key => $event) {
// calculate interests as single value
$int = -1;
$not_int = -1;
if (array_key_exists("interested", $event)) {
$int = $event['interested'];
}
if (array_key_exists("not_interested", $event)) {
$not_int = $event['not_interested'];
}
if ($int == -1 && $not_int == -1) {
$intval = -1;
} else {
if ($int == 0) {
if ($not_int == 0) {
$intval = 1;
} else {
$intval = 0;
}
} else {
$intval = 2;
}
}
// create new Event obj
try {
$events[$key] = EventProvider::toArrayForCvalues($events[$key]);
$events[$key][0] = $tmp->newInstanceArgs($events[$key]);
$events[$key][1] = $intval;
} catch (InvalidArgumentException $e) {
$events[$key] = null;
}
}
return $events;
}
/**
* Loads all recommended events for a given user. It is limited to a number of results
* otherwise the web server will fail.
*
* @param $user_id int
* @param $num int number of elements to retrieve
* @param $offset int offset
*
* @return array of Event|null
*/
public function getUserInterests($user_id, $num = 20, $offset = 0)
{
$events = $this->db->getByEqCondsAndLimitedAndOrdered('events.*', self::ENTITY_NAME . " RIGHT OUTER JOIN events ON (" . self::ENTITY_NAME . ".event_id = events.event_id) ", array(self::ENTITY_NAME . '.user_id' => $user_id), $num, $offset, 'events.event_id');
if ($events === false) {
return false;
}
// Retrieve all events as Event Object
$tmp = new \ReflectionClass('App\\Model\\Event');
foreach ($events as $key => $event) {
try {
$events[$key] = EventProvider::toArrayForCvalues($events[$key]);
$events[$key] = $tmp->newInstanceArgs($events[$key]);
} catch (InvalidArgumentException $e) {
$events[$key] = null;
}
}
return $events;
}
