重写生产券码规则

app/Models/Activity.php

@@ -102,18 +102,29 @@ class Activity extends Model
         return $this->status;
     }
 
-    //发券
-    public function grant($mobile, $outletId = null)
+    public function getCode($code = 'YSD200907684743')
     {
-
-        try {
         //判断生成何种码
         if ($this->channel == self::CHANNEL_UNION) {
             $code = '66406' . date('ymdHi') . mt_rand(10000, 99999);
         } else {
-                $code = 'YSD' . substr(date('ymdHi'), 1) . mt_rand(100, 999);
+            $code = 'YSD' . substr(date('ymd'), 1) . mt_rand(100000000, 999999999);
         }
 
+        $exists = ActivityCoupon::where('code', $code)->exists();
+        if ($exists) {
+            return $this->getCode(null);
+        }
+
+        return $code;
+    }
+
+    //发券
+    public function grant($mobile, $outletId = null)
+    {
+        try {
+            $code = $this->getCode();
+
             if ($this->type == SELF::TYPE_EXTEND) {
                 $start_at = now();
                 $end_at   = now()->addDays($this->days);