laravel 具有：未找到列

Question

我下面的代码是这样的：

$places = DivePlace::selectRaw("*,(st_distance_sphere( POINT(".$lon.",".$lat.") ,  point(lon, lat))/1000) as distance")
    ->havingRaw("distance < ".$radius)
    ->orderBy("distance")
    ->paginate(10);

没有 "havingRaw" 一切都很好。添加后出现如下错误：

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'distance' in 'having clause' (SQL: select count(*) as aggregate from dive_places having distance < 300)

有什么解决办法吗？

Answer 1

您需要重复距离定义，因为对于分页 Laravel 仅对列使用 count(*)，因此它应该是：

$places = DivePlace::selectRaw("*,(st_distance_sphere( POINT(".$lon.",".$lat.") ,  point(lon, lat))/1000) as distance")
    ->havingRaw("(st_distance_sphere( POINT(".$lon.",".$lat.") ,  point(lon, lat))/1000) < ".$radius)
    ->orderBy("distance")
    ->paginate(10);

您也可以为查询使用绑定，这样更好：

$places = DivePlace::selectRaw("*,(st_distance_sphere( POINT(?, ?) ,  point(lon, lat))/1000) as distance",[$lon, $lat])
    ->havingRaw("(st_distance_sphere( POINT(?, ?) ,  point(lon, lat))/1000) < ?", [$lon, $lat, $radius])
    ->orderBy("distance")
    ->paginate(10);

Answer 2

->where(DB::raw("(ST_Distance_Sphere(POINT(".$lon.",".$lat."), POINT(lon,lat))/1000)"), '<', 200)

而不是->havingRaw("(st_distance_sphere( POINT(?, ?) , point(lon, lat))/1000) < ?", [$lon, $lat, $radius])

laravel 具有：未找到列

laravel having: Column not found

mysql

laravel

laravel-5.1

having

laravel-pagination