文档路径SwiftUI中随机生成的Firebase子键

Question

我环顾四周，虽然有一些相似的答案，但我找不到我特别要找的东西。

我的数据存储在 Firebase (Cloud Firestore) 中，我需要读回该数据，这很好并且可以正常工作。我的问题是我更改了文档文件路径的设置，通过在文件路径中添加随机生成的 id 来进一步提高安全性。

首先，这是否可以将通配符添加到 Xcode 中的文档路径中？其次，这可以作为一个字符串来完成吗？

我已经添加了下面的代码，包括文件路径。

提前致谢。

class getContactData : ObservableObject{
    
    @Published var datas = [contactDataType]()
    @AppStorage("selectedSchool") var selectedSchool: String = "selectedSchool"
    
    init() {
        
        let db = Firestore.firestore()
        
        db.collection("/School Name/\(selectedSchool)/School Assets/**randomPath**/Contact Details").getDocuments { (snap, err) in
            
            if err != nil{
                
                print((err?.localizedDescription)!)
                return
            }
            
            for i in snap!.documents{
                
                let id = i.documentID
                let adno = i.get("ID") as! String
                let fullname = i.get("Full Name") as! String
                let firstname = i.get("First Name") as! String
                let lastname = i.get("Last Name") as! String
                let registrationgroup = i.get("Registration Group") as! String
                let priority1relation = i.get("Priority 1 Relation") as! String
                let priority1fullname = i.get("Priority 1 Full Name") as! String
                let priority1maintelephone = i.get("Priority 1 Main Telephone") as! String
                let priority1mobile = i.get("Priority 1 Mobile") as! String
                let priority2relation = i.get("Priority 2 Relation") as! String
                let priority2fullname = i.get("Priority 2 Full Name") as! String
                let priority2maintelephone = i.get("Priority 2 Main Telephone") as! String
                let priority2mobile = i.get("Priority 2 Mobile") as! String
                let priority3relation = i.get("Priority 3 Relation") as! String
                let priority3fullname = i.get("Priority 3 Full Name") as! String
                let priority3maintelephone = i.get("Priority 3 Main Telephone") as! String
                let priority3mobile = i.get("Priority 3 Mobile") as! String
                let priority4relation = i.get("Priority 4 Relation") as! String
                let priority4fullname = i.get("Priority 4 Full Name") as! String
                let priority4maintelephone = i.get("Priority 4 Main Telephone") as! String
                let priority4mobile = i.get("Priority 4 Mobile") as! String
                
                
                self.datas.append(contactDataType(id: id, adno: adno, fullname: fullname, firstname: firstname, lastname: lastname, registrationgroup: registrationgroup, priority1relation: priority1relation, priority1fullname: priority1fullname, priority1maintelephone: priority1maintelephone, priority1mobile: priority1mobile, priority2relation: priority2relation, priority2fullname: priority2fullname, priority2maintelephone: priority2maintelephone, priority2mobile: priority2mobile, priority3relation: priority3relation, priority3fullname: priority3fullname, priority3maintelephone: priority3maintelephone, priority3mobile: priority3mobile, priority4relation: priority4relation, priority4fullname: priority4fullname, priority4maintelephone: priority4maintelephone, priority4mobile: priority4mobile))
            }
        }
    }
}

struct contactDataType : Identifiable {
    
    var id : String
    var adno : String
    var fullname : String
    var firstname : String
    var lastname : String
    var registrationgroup : String
    var priority1relation : String
    var priority1fullname : String
    var priority1maintelephone : String
    var priority1mobile : String
    var priority2relation : String
    var priority2fullname : String
    var priority2maintelephone : String
    var priority2mobile : String
    var priority3relation : String
    var priority3fullname : String
    var priority3maintelephone : String
    var priority3mobile : String
    var priority4relation : String
    var priority4fullname : String
    var priority4maintelephone : String
    var priority4mobile : String

Answer 1

在 Firebase 中，如果您添加一个新的 .document() 而不指定文档的名称，它将创建一个具有随机生成 ID 的文档。这不是通配符，而是随机路径。

    let firstCollection = "School Name"
    let selectedSchool = "Selected School"
    let secondCollection = "School Assets"
    let thirdCollection = "Contact Details"
    
    // Adding a document:
    let newDocument = db.collection(firstCollection).document(selectedSchool).collection(secondCollection).document()
    let randomPath = newDocument.documentID // You will need to store this if you need to access it directly later
    let finalPath = newDocument.collection(thirdCollection)
    finalPath.addDocument(data: ["info" : "info"], completion: nil)
    

附注：最好将数据库中的集合和文档的名称保持小写且不包含空格，以避免键入字符串错误（“学校名称”->“学校名称”）。

Answer 2

Firestore 不支持查询中的通配符。

如果您想查询数据库中所有名为“Contact Details”的子集合中的所有文档，则可以使用collection group query。

db.collectionGroup("Contact Details").getDocuments { (snap, err) in
    // ...
}