Mocht iemand iets soortgelijks willen doen, dan zal ik de code posten die ik de afgelopen vijf uur heb geschreven en getest.
Ik besloot mijn twee tafels om te zetten in drie, waarbij ik alle terugkerende opties naar de derde tafel verplaatste:
'churchcal_events' - er zijn extra velden voor evenementinformatie die ik hier niet heb opgenomen
+----+-----------+------------+------------+------------+-----------+
| id | name | date | starttime | endtime | recurring |
+----+-----------+------------+------------+------------+-----------+
| 1 | Event 1 | 2013-04-01 | 10:30:00 | 12:00:00 | 0 |
| 2 | Event 2 | | 14:00:00 | 15:00:00 | 1 |
| 3 | Event 3 | | 09:00:00 | | 1 |
| 4 | Event 4 | | 19:00:00 | 21:00:00 | 1 |
+----+-----------+------------+------------+------------+-----------+
'churchcal_assign' - routeert evenementen naar de juiste kalenders (omdat er kalenders zullen zijn voor verschillende afdelingen op de hele website)
+----------+-------------+
| event_id | calendar_id |
+----------+-------------+
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
+----------+-------------+
'churchcal_recur_events' - Dit zijn de regels voor de herhaling van elk evenement
+----------+-----------+------------+----------------+------------+-------------+-----------+
| event_id | frequency | recur_type | recur_day_num | recur_day | recur_start | recur_end |
+----------+-----------+------------+----------------+------------+-------------+-----------+
| 2 | 1 | Week | NULL | Sunday | NULL | NULL |
| 3 | 2 | Week | NULL | Wednesday | 2013-04-01 | NULL |
| 4 | 2 | Month | third | Friday | 2013-04-01 | NULL |
+----------+-----------+------------+----------------+------------+-------------+-----------+
Nieuwe code (PHP) - Dit is in een daglus
//query all events
$get_events = db_query("SELECT * FROM {churchcal_events ce, churchcal_recur_events cre}
WHERE (MONTH(ce.date) = :month AND YEAR(ce.date) = :year AND DAY(ce.date) = :day) OR
(ce.id = cre.event_id AND ce.recurring = :recur AND cre.recur_day = :calendar_day)
ORDER BY starttime",
array(
':month' => $month,
':year' => $year,
':day' => $list_day,
':recur' => '1',
':calendar_day' => date('l', strtotime($month . '/' . $list_day . '/' . $year)),
));
foreach($get_events as $event) {
//see if events belong to this calendar
$calendar_assign = db_query("SELECT * FROM {churchcal_assign} WHERE event_id = :event_id AND calendar_id = :cal_id",
array(
':event_id' => $event->id,
':cal_id' => $cal_id,
));
if($calendar_assign->rowCount() > 0) {
//one-time events
if(($event->recurring != '1') && ($single_event_id != $event->id)) {
$calendar .= calendar_event($event->id, $event->name, $event->starttime);
$single_event_id = $event->id;
//$calendar .= $single_event_id;
}
//monthly recurring events
if(($event->recur_type == 'Month') && ($event->recurring == '1')
//day is on or before end date
&& (($event->recur_end >= date('Y-m-d', strtotime($month . '/' . $list_day . '/' . $year))) || ($event->recur_end == '0000-00-00') || ($event->recur_end == NULL))
//day is on or after start date
&& (($event->recur_start <= date('Y-m-d', strtotime($month . '/' . $list_day . '/' . $year))) || ($event->recur_start == '0000-00-00') || ($event->recur_start == NULL))
//day is equal to date of recurrence, i.e. first friday, third monday, etc
&& ($year . date('m', strtotime($year . '/' . $month . '/' . $list_day)) . $list_day == date('Ymj', strtotime($event->recur_day_num . ' ' . $event->recur_day . ' of ' . date('F', strtotime($month . '/' . $list_day . '/' . $year)) . ' ' . $year)))
//day is in agreement with month frequency, i.e. every month, every other, etc. from start date
&& ($month % $event->frequency == date('m', strtotime($event->recur_start)) % $event->frequency)) {
$calendar .= calendar_event($event->id, $event->name, $event->starttime);
}
//weekly recurring events
if(($event->recur_type == 'Week') && ($event->recurring == '1')
//day is on or before end date
&& (($event->recur_end >= date('Y-m-d', strtotime($month . '/' . $list_day . '/' . $year))) || ($event->recur_end == '0000-00-00') || ($event->recur_end == NULL))
//day is on or after start date
&& (($event->recur_start <= date('Y-m-d', strtotime($month . '/' . $list_day . '/' . $year))) || ($event->recur_start == '0000-00-00') || ($event->recur_start == NULL))
//day is in agreement with week frequency, i.e. every week, every other, etc. from start date
&& (date('W', strtotime($month . '/' . $list_day . '/' . $year)) % $event->frequency == date('W', strtotime($event->recur_start)) % $event->frequency)) {
$calendar .= calendar_event($event->id, $event->name, $event->starttime);
}
}
}
Als je dit niet in een Drupal-module maakt zoals ik, kun je 'db_query()' vervangen door je eigen databasequeryfunctie zoals PHP's standaard 'mysql_query()';