fix gain code

@@ -333,12 +333,14 @@ module.exports = class extends global.yoho.BaseModel {
         let userJoinTimes = userTimesCache.get(TimesCacheKey);
 
         if (_.isUndefined(userJoinTimes)) {
-            userJoinTimes = await mysqlCli.query(`select count(*) from ${TABLE_ACT_PRIZE_PRODUCT_USER}
+            let info = await mysqlCli.query(`select count(*) as join_num from ${TABLE_ACT_PRIZE_PRODUCT_USER}
                 where act_prize_id = :actPrizeId and uid = :uid`, {
                     actPrizeId,
                     uid
                 });
 
+            userJoinTimes = _.get(info, '[0].join_num', 0);
+
             // 用户参与次数超限（业务缓存）
             if (userJoinTimes >= MAX_JOIN_TIMES) {
                 userTimesCache.set(TimesCacheKey, userJoinTimes);