7
所以我有数据,像这样:为什么Firebase“.indexOn”不起作用?
pushNotifications {
-K - RwEgd541PIGNOXXUH: {
message: "Xiaoyu Hugh Hou bid at $900 on your task: New P..."
notifyId: "facebook:10100683829966199"
relatedTask: "-Jzl8XKaxGCv19nIOChm"
timestamp: 1443594566599
} - K - RwpcBlQa04VJT4Bwm: {
message: "Sam Feldt bid at $1100 on your task: New Post g..."
notifyId: "google:1043268349966197"
relatedTask: "-Jzl8XKaxGCv19nIOChm"
timestamp: 1443594721963
} - K - RwuM3 - 0 G0q9I96WHg: {
message: "Sam Feldt bid at $600 on your task: NO Firebase..."
notifyId: "facebook:10100683829966199"
relatedTask: "-JzTSk2TIlO46oVqJ1Nn"
timestamp: 1443594741347
}
}
在我的代码,我需要得到下面一定的“notifyId”的最新通知。下面是代码:
ref.child('pushNotifications')
.orderByChild("notifyId")
.limitToLast(1)
.on("child_added", function (snapshot) {
console.log("Found a new notification...");
sendPush(snapshot.val());
});
在我火力安全规则,我有这样的指数规则:
"pushNotifications": {
".read": "auth != null",
".write": "auth != null",
"$pushId": {
".indexOn": ["notifyId", "timestamp"],
}
},
这是该指数结构遵循由火力地堡文档浏览:docs
但是,当我运行的代码,控制台仍然日志
FIREBASE警告:使用未指定的索引。考虑在/ pushNotifications处添加“.indexOn”:“notifyId”到您的安全规则以获得更好的性能
由于我已经做到了,所以没有任何意义。请帮忙!
顺便说一句,这个相同的主题是不到一天前在这里解决:htt电话号码://stackoverflow.com/questions/32849805/firebase-index-rule-for-attributes-under-key-created-by-childautobyid –