前端兑换码兑换失败

失败原因：可能专栏加的专题已被删除

修改文件：application\wap\model\special\SpecialExchange

修改方法：userExchangeSubmit()

 foreach ($special_source as $k => $v) {
      $task_special = Special::PreWhere()->where(['id'=>$v['source_id']])->find();
      if(!$task_special) continue;
       SpecialBuy::setBuySpecial('', $uid, $v['source_id'], 4, $task_special['validity'], $special_id);
  }

修改文件：application\web\model\special\SpecialExchange

修改方法：userExchangeSubmit()

 foreach ($special_source as $k => $v) {
      $task_special = Special::PreWhere()->where(['id'=>$v['source_id']])->find();
      if(!$task_special) continue;
       SpecialBuy::setBuySpecial('', $uid, $v['source_id'], 4, $task_special['validity'], $special_id);
  }