根据经纬度排序

app/Api/Controllers/PharmacyController.php

@@ -24,6 +24,9 @@ public function test()
     public function PharmacyList(Request $request)
     {
         $search_input = $request->input('search_input');
+        $lat = $request->input('lat');
+        $lng = $request->input('lng');
+        $distance = $request->input('distance_sort', 0); // 经纬度排序规则[0=从近到远,1=从远到近]
         $query = PharmacyModel::query();
         if ($search_input) {
             $query->where('name', 'like', "%{$search_input}%");
@@ -35,6 +38,15 @@ public function PharmacyList(Request $request)
             ->where('business_start', '<=', Carbon::now()->format('H:i'))
             ->where('business_end', '>=', Carbon::now()->format('H:i'));
 
+        if ($lat && $lng && is_numeric($lat) && is_numeric($lng)) {
+            $distancesql = " * , ACOS(SIN(( $lat * 3.1415) / 180 ) *SIN((lat * 3.1415) / 180 ) +COS(( $lat* 3.1415) / 180 ) * COS((lat * 3.1415) / 180 ) *COS(( $lng* 3.1415) / 180 - (lng * 3.1415) / 180 ) ) * 6380";
+            if ($distance_sort == 1) {
+                $query = $query->addSelect(DB::raw($distancesql.' as distance'))->orderBy('distance', 'DESC');
+            } else {
+                $query = $query->addSelect(DB::raw($distancesql.' as distance'))->orderBy('distance', 'ASC');
+            }
+        }
+
         $data = $query->paginate(10);
 
         return $this->success($data);