'Oliver Davies.', 'response' => RsvpResponse::RESPONSE_YES, 'member' => ['event_context' => ['host' => true]]], ['name' => 'matthew s.', 'response' => RsvpResponse::RESPONSE_YES, 'member' => ['event_context' => ['host' => false]]], ['name' => 'Michael P.', 'response' => RsvpResponse::RESPONSE_YES, 'member' => ['event_context' => ['host' => false]]], ['name' => 'Kathryn "Kat" R.', 'response' => RsvpResponse::RESPONSE_YES, 'member' => ['event_context' => ['host' => false]]], ['name' => 'Did not attend', 'response' => RsvpResponse::RESPONSE_NO, 'member' => ['event_context' => ['host' => false]]], ]; public function getConfirmedAttendees(): Collection { return Collection::make(self::$rsvps) ->filter(fn (array $attendee): bool => $attendee['response'] == RsvpResponse::RESPONSE_YES) ->filter(fn (array $attendee): bool => !$attendee['member']['event_context']['host']) ; } }