Question

我的代码写在下面

 $meetings = Event::select(\DB::raw("*, " .
                "( " .
                "6371 * " .
                "acos( " .
                "cos( radians('%s') ) * " .
                "cos( radians( lattitude ) ) * " .
                "cos( " .
                "radians( longitude ) - radians('%s')" .
                ") + " .
                "sin( radians('%s') ) * " .
                "sin( radians( lattitude ) ) " .
                ")" .
                ") AS distance"))
                ->havingRaw('distance > 0')
                ->setBindings([ $lat, $lng, $lat,$radius ], 'select')
                ->paginate(4)->toArray();

运行此代码时，我发现此错误

**“具有子句”中的未知列“距离”（SQL：选择count（*）作为event_table的集合，且距离> 0）“，” exception“：” PDOException：SQLSTATE [42S22]：找不到列：1054 **“具有子句”中的未知列“距离”

当我删除此-> havingRaw（'distance> 0'）行时，此代码的输出为

"data" => array:4 [
0 => array:19 [
  "event_id" => 14
  "event_name" => "Test Event"
  "event_description" => "this is a test event"
  "event_live_url" => "http://www.facebook.com/event/test-event"
  "address" => "Mirpur, Dhaka, Bangladesh"
  "lattitude" => 23.810301
  "longitude" => 90.412498
  "creator_id" => 6
  "start_time" => "2017-08-29 18:42:58"
  "end_time" => "2017-08-29 00:00:00"
  "timezone" => null
  "event_phone" => "8801705092993"
  "event_email" => "rhythm.shahriar.bd@gmail.com"
  "event_facebook_page" => "http://www.facebook.com/event/test-event"
  "price" => 200.0
  "active" => 1
  "event_category_id" => 1
  "create_at" => "2017-08-29 18:42:58"
  "distance" => 10049.507140444
]

现在我无法应用逻辑找出该距离内的1公里半径。我怎样才能做到这一点？？

Answer 1

您可以在where语句中使用完整表达式，而不必使用例如

。

->whereRaw("(6371 * ACOS(COS(RADIANS('%s')) * COS(RADIANS(price)) * COS(RADIANS(min_delivery) - RADIANS('%s')) + SIN(RADIANS('%s')) * SIN(RADIANS(min_delivery)))) > 0")

hadRaw无法在laravel中进行分页

1 个答案: