Ghost events should provide a link to original event

Summary: Closes T8356, Ghost events should provide a link to original event

Test Plan: Open an instance at /calendar/event/{id}/{index}. It should have a link to /calendar/event/{id}. Original recurring event should not link to itself.

Reviewers: epriestley, #blessed_reviewers

Reviewed By: epriestley, #blessed_reviewers

Subscribers: Korvin, epriestley

Maniphest Tasks: T8356

Differential Revision: https://secure.phabricator.com/D13068

src/applications/calendar/controller/PhabricatorCalendarEventViewController.php

@@ -218,7 +218,12 @@ final class PhabricatorCalendarEventViewController
     if ($event->getIsRecurring()) {
       $properties->addProperty(
         pht('Recurs'),
-        idx($event->getRecurrenceFrequency(), 'rule'));
+        ucwords(idx($event->getRecurrenceFrequency(), 'rule')));
+      if ($event->getIsGhostEvent()) {
+        $properties->addProperty(
+          pht('Recurrence of Event'),
+          $viewer->renderHandle($event->getInstanceOfEventPHID()));
+      }
     }
 
     $properties->addProperty(

src/applications/calendar/storage/PhabricatorCalendarEvent.php

@@ -288,8 +288,8 @@ final class PhabricatorCalendarEvent extends PhabricatorCalendarDAO
       ->setIsGhostEvent(true)
       ->setDateFrom($date)
       ->setDateTo($date + $duration)
-      ->setIsRecurring(false)
-      ->setRecurrenceFrequency(null)
+      ->setIsRecurring(true)
+      ->setRecurrenceFrequency($this->recurrenceFrequency)
       ->setInstanceOfEventPHID($this->getPHID())
       ->setSequenceIndex($sequence_index)
       ->setEditPolicy($edit_policy);

src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php

@@ -393,8 +393,6 @@ final class PhabricatorCalendarEventTransaction
           $added = array();
           $uninvited = array();
 
-          // $event = $this->renderHandleLink($object_phid);
-
           foreach ($new as $phid => $status) {
             if ($status == PhabricatorCalendarEventInvitee::STATUS_INVITED
               || $status == PhabricatorCalendarEventInvitee::STATUS_ATTENDING) {