我正在使用 FCM 探索 Cloud Functions 以向我的 iOS 应用设备发送推送通知。我有以下结构,我正在倾听注册活动的人。我想提取 eventHost 以便我可以去我的用户节点找到 userUID 并最终找到他的 deviceID,并向他发送推送通知。
{
"events" : {
"XXX" : {
"eventHost" : "YYY", //<-- How do I get this node?
"eventID" : "XXX",
"registered" : { //<-- Listening for this node
"ASKDJHAIUCHA" : {
"name" : "Emma Watson",
"userUID" : "ASKDJHAIUCHA"
}
},
},
},
"users" : {
"YYY" : {
"deviceID" : "1234456",
"name" : "Andrew Garfield",
"userUID" : "YYY"
},
}
}
到目前为止,我的云函数代码:
exports.sendNotification = functions.database.ref('/events/{eventId}/registered')
.onWrite(event => {
const register = event.data.val();
const eventHost = functions.database.ref('/events/' + event.params.eventId + '/eventHost')
console.log('sendNotifications', eventHost);
const payload = {
notification: {
title: "Event Registration",
body: "Someone registered to your event!"
}
};
const options = {
priority: "high"
};
return admin.messaging().sendToDevice("theDeviceID", payload, options)
});
我在向数据库中添加值时的 Swift 部分是这样的:
@IBAction func registerButtonDidTap(_ sender: Any) {
let personDict = [FIRConstants.UserInfo.Name: user.userName,
FIRConstants.UserInfo.UserUID: user.userUID]
let registerPerson = [user.userUID!: personDict as AnyObject] as [String: AnyObject]
let values = ["registered": registerPerson]
FIRHelperClient.sharedInstance.checkIfEventHasRegistrants(ref, event.eventID!) { (has, error) in
if let error = error {
print(error.localizedDescription)
} else {
if let has = has {
if has {
self.ref.child("events").child(self.event.eventID!).child("registered").updateChildValues(registerPerson)
} else {
self.ref.child("events").child(self.event.eventID!).updateChildValues(values)
}
}
}
}
}
我的云功能肯定不完整,因为目前我正在硬编码 theDeviceID。由于我对 Node.js 非常缺乏经验,并且正在尝试用 Swift 编写 iOS 代码和服务器端代码,所以如果这个问题很简单,请原谅我。这里的一些建议会很有帮助,谢谢。