我正在尝试从ios Swift项目中的Firestore数据库中获取数据 [英] I am trying to fetch data from Firestore database in my ios Swift Project

问题描述

我想从订阅集合团队中获取数据.

I want to fetch data from team of subscription collection.

我正在尝试以下代码:

db.collection("subscriptions").addSnapshotListener { querySnapshot, error in
    guard let snapshot = querySnapshot else {
        print("Error retreiving snapshots \(error!)")
        return
    }

    //print("Current data: \(snapshot.documents.map { $0.data() })")

    for document in snapshot.documents{
        print(document.data())
    }
}

我的代码输出

因此，就我而言，我能够获取馆藏数据，但无法从团队那里获取数据，请帮帮我，谢谢支持

So, as far concern i am able to fetch the data of collections but not able to get data from team , help me out , Thanx for support

推荐答案

如果您不想监听每个事件，请使用 getDocuments 方法而不是 addSnapshotListener .

If you don't want to listen every event use getDocuments method instead of addSnapshotListener.

/// This will give you team data
document.data()["team"]

从firestore获取 team 信息后.这是获取 name 和 officeId 的方法:

After getting the team information from firestore. Here is how to get name and officeId:

if let teamInfo = document.data()["team"] as? [String: Any] {
   let teams = teamInfo.map {$0.value}
   for team in teams {
       guard let validTeam = team as? Dictionary<String, Any> else {continue}
       let name = validTeam["name"] as? String ?? ""
       let officeId = validTeam["officeId"] as? String ?? ""
       print("name: \(name), officeId: \(officeId)")
   }
}

输出

name: Developer Ratufa, officeId: myuPlTBO8sEM4SOQ8rWY
name: , officeId: myuPlTBO8sEM4SOQ8rWY

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