firebase 其中In 10限制Flutter

ljsrvy3e 于 2023-01-18 发布在 Flutter

关注(0)|答案(1)|浏览(93)

我试图建立一个查询，这将有助于我为所有当前用户以下建立门票，但当列表越来越大（10以上）它给我一个错误，10是限制。下面是代码：

buildFollowingTickets() {
    if (!widget.followingList.isEmpty) {
      return FutureBuilder(
        future: userRef.where('id', whereIn: widget.followingList).get(),
        builder: (context, snapshot) {
          if (!snapshot.hasData) {
            return loading();
          }

          List<UserTicket> userFollowing = [];
          final followings = snapshot.data.docs;
          for (var following in followings) {
            final id = following.data()['id'];
            final displayName = following.data()['displayName'];
            final photoUrl = following.data()['photoUrl'];
            final UserTicket userTicket = UserTicket(
              displayName: displayName,
              photoUrl: photoUrl,
              id: id,
            );
            userFollowing.add(userTicket);
          }
          return ListView(
            children: userFollowing,
          );
        },
      );
    }
  }

WhereIn只能查找10以下的列表，我正在想办法改变这一点......提前感谢！

firebase

来源：https://stackoverflow.com/questions/67567648/wherein-10-limit-flutter

1条答案

按热度按时间

xdnvmnnf1#

谢谢！我决定把它变成一个流构建器，现在它的工作-我也改变了我的数据库一点点

buildFollowersTickets() {
    if (!widget.followersList.isEmpty) {
      return StreamBuilder(
        stream: followersRef
            .doc(widget.followersId)
            .collection('userFollowers')
            .orderBy('displayName', descending: false)
            .snapshots(),
        builder: (context, snapshot) {
          if (!snapshot.hasData) {
            return loading();
          }

          List<UserTicket> userFollowers = [];
          final followers = snapshot.data.docs;
          for (var follower in followers) {
            final id = follower.data()['id'];
            final displayName = follower.data()['displayName'];
            final photoUrl = follower.data()['photoUrl'];
            final UserTicket userTicket = UserTicket(
              displayName: displayName,
              photoUrl: photoUrl,
              id: id,
            );
            userFollowers.add(userTicket);
          }
          return ListView(
            children: userFollowers,
          );
        },
      );
    }
  }

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firebase 其中In 10限制Flutter

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