差几元起送

@@ -494,6 +494,23 @@ class Order extends Api
 
         if ($coupon !== [] && $coupon['full_price'] > $sum_price) $this->error('优惠券不可使用');
 
+        // 给骑手佣金
+        $rider_rule = Db::name('litestore_rider_rule')->find();
+        if ($sum_price < $rider_rule['delivery_threshold']){
+            $last_price = $rider_rule['delivery_threshold'] - $sum_price;
+            $this->error('差'.$last_price.'元起送');
+        }
+        $distance = ceil(getDistance($lat1,$lng1,$lat2,$lng2));
+        if ($distance > $rider_rule['first']){
+            $first_rider_fee = $rider_rule['first_rider_fee'];
+            $subdistance = $distance-$rider_rule['first'];
+            $count = ceil(bcdiv($subdistance,$rider_rule['additional'],1));
+            $second_rider_price = bcmul($count,$rider_rule['additional_rider_fee'],2);
+            $rider_price = bcadd($first_rider_fee,$second_rider_price,2);
+        }else{
+            $rider_price = $rider_rule['first_rider_fee'];
+        }
+
         // 订单地址
         $order_address = [
             'name' => $address['username'],
@@ -510,19 +527,6 @@ class Order extends Api
         $order_no = 'LQ-'.time().mt_rand(1000,9999); // 订单号
         $couponprice = isset($coupon['price'])?$coupon['price']:0;  // 优惠价格
 
-        // 给骑手佣金
-        $config = Db::name('litestore_rider_rule')->find();
-        $distance = ceil(getDistance($lat1,$lng1,$lat2,$lng2));
-        if ($distance > $config['first']){
-            $first_rider_fee = $config['first_rider_fee'];
-            $subdistance = $distance-$config['first'];
-            $count = ceil(bcdiv($subdistance,$config['additional'],1));
-            $second_rider_price = bcmul($count,$config['additional_rider_fee'],2);
-            $rider_price = bcadd($first_rider_fee,$second_rider_price,2);
-        }else{
-            $rider_price = $config['first_rider_fee'];
-        }
-
         // 订单信息
         $order = [
             'order_no' => $order_no,