带有Firebase数据库的Swift AwaitKit

问题描述

我正在尝试使用Swifts AwaitKit来实现Firebase数据库，它提供等待/异步并在后台使用Swifts PromiseKit.问题是，当我将firebase代码放入promise时，它总是在NSURLSession上失败，并显示此错误

I'm trying to implement firebase database with swifts AwaitKit, which delivers await/async and uses swifts PromiseKit under hood. The problem is that when I put firebase code inside promise it always fails on NSURLSession with this error

但是，自称为http的自己使用https而不是http.我试图允许NSAllowsArbitraryLoads，NSExceptionDomains没什么帮助我.这是代码.

However http call it self uses https not http. I tried to allow NSAllowsArbitraryLoads, NSExceptionDomains nothings helps me. Here is code.

let data: [String: Any] = [
        "test": 1,
        "test2": "user"
    ]

    let promise: Promise<Bool> = Promise { resolve, reject in
        ref.child("test/picks").setValue(data) { err, _ in
            if err == nil {
                resolve(true)
            } else {
                reject(err!)
            }
        }
    }

    let isStored = try! await(promise)

推荐答案

我遇到了同样的问题，这里是使用Xcode 11 Beta 5，SwiftUI，AwaitKit，PromiseKit和Firestore的有效代码段.

I have the same issue, here a working snippet with Xcode 11 Beta 5, SwiftUI, AwaitKit, PromiseKit and Firestore.

import Foundation
import Firebase
import PromiseKit
import AwaitKit


final class UserStore: ObservableObject {
    let collection: CollectionReference

    init() {
        collection = Firestore.firestore().collection("users")
    }


    func create(userId: String, familyName: String, givenName: String, email: String) {
         async {
            let fetchUser : Promise<String> = Promise { seal in
                self.collection.document("HFlTjPHgbXH96q6LQ93N").getDocument { (document, error) in
                    if let document = document, document.exists {
                        let dataDescription = document.data().map(String.init(describing:)) ?? "nil"
                        seal.fulfill(dataDescription)
                    } else {
                        seal.reject(NSError())
                    }
                }
            }
            let user = try! await(fetchUser)
            print("My user:", user)
        }
    }
}

这篇关于带有Firebase数据库的Swift AwaitKit的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！