Eloquent trait to find nearest results based on Latitude and Longitude

GeoDistance.php

<?php

namespace App\Models\Traits;

trait GeoDistance
{
    /**
     * Filter results by nearest latitude and longitude.
     *
     * @param  \Illuminate\Database\Eloquent\Builder $query
     * @param  float $lat
     * @param  float $lng
     * @param  int $distance
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeGeoDistance($query, $lat, $lng, $distance)
    {
        $results = static::findNearest($lat, $lng, $distance);

        if ($results->isNotEmpty()) {
            return $query->whereIn('id', $results->pluck('id')->all());
        }

        return $query;
    }

    /**
     * Find all nearest results.
     *
     * @param  float $lat
     * @param  float $lng
     * @param  int $distance
     * @return \Illuminate\Support\Collection
     */
    public static function findNearest($lat, $lng, $distance)
    {
        return static::selectRaw('id, ( 6371 * acos( cos( radians(?) ) * cos( radians(' . static::getLatitudeColumn() . ') ) * cos( radians(' . static::getLongitudeColumn() . ') - radians(?) ) + sin( radians(?) ) * sin( radians(' . static::getLatitudeColumn() . ') ) ) ) AS distance', [$lat, $lng, $lat])
            ->having('distance', '<', $distance)
            ->orderBy('distance')
            ->get();
    }

    /**
     * Get the name of the "latitude" column.
     *
     * @return string
     */
    public static function getLatitudeColumn()
    {
        return defined('static::LATITUDE') ? static::LATITUDE : 'latitude';
    }

    /**
     * Get the name of the "longitude" column.
     *
     * @return string
     */
    public static function getLongitudeColumn()
    {
        return defined('static::LONGITUDE') ? static::LONGITUDE : 'longitude';
    }
}