更新：商家信息补充有效优惠卷数量统计

app/traits/CouponMainTrait.php

@@ -6,6 +6,7 @@ use app\exception\RepositoryException;
 use app\model\CouponMain;
 use app\model\UsingRule;
 use app\model\Coupon;
+use think\facade\Db;
 
 trait CouponMainTrait
 {
@@ -191,6 +192,10 @@ trait CouponMainTrait
                 $q->whereTime('c.received_time', '>=', $startDay);
             })
             ->count('c.id');
+        $effectiveSize      = CouponMain::where($whereMap)
+            ->whereTime('start_time', '<=', date('Y-m-d H:i:s'))
+            ->whereTime('end_time', '>=', date('Y-m-d H:i:s'))
+            ->sum(Db::Raw('(`count` - `received_count`)'));
 
         return [
             // 发行总次数
@@ -203,6 +208,8 @@ trait CouponMainTrait
             'unVerificationSize'    => $unVerificationSize,
             // 最近（$daySize + 1）天内的领取量
             'lastReceivedSize'      => $lastReceivedSize,
+            // 有效的（进行中且未被领取）
+            'effectiveSize'         => $effectiveSize,
         ];
     }
 }