Laravel模型：all，在同一个函数中使用结果（集合）

Question

I am retrieving events from DirtyEvent model and I want to create an Ical using the values from the results however it says that the values do not exist in currect collection:

public function handle()
{
    $event = DirtyEvent::all()
            ->pluck('startdate')
            ->pluck('endate');
    dd($event);
    $vCalendar = new \Eluceo\iCal\Component\Calendar('http://localhost/test');
    $vEvent = new \Eluceo\iCal\Component\Event();
    $vEvent ->setDtStart(new \DateTime($event->startdate))
            ->setDtEnd(new \DateTime($event->endate));
    $vCalendar->addComponent($vEvent);
    dd($vCalendar);
}

Answer 1

DirtyEvent::all()
    ->pluck('startdate')
    ->pluck('endate');

What you're doing here is

1. Get all events
2. Pluck the startdate from the collection of those events
3. Try to pluck the enddate from the collection of plucked startdates

Instead, you should do eg

DirtyEvent::pluck('startdate', 'enddate')->all();

to get an array of dates, which you can then use to populate your data.