根据角色显示不同的视图控制器-Firebase，Swift 3 [英] Display different view controllers based on role-Firebase, Swift 3

问题描述

我正在构建一个非常简单的应用程序，该应用程序将用户的报告发送给管理员.到目前为止，我已经完成了整个前端.我有菜单在工作，报告顺序似乎很短.现在是我该承担后端责任的时候了.我是一名新的Swift开发人员，完全是自学成才的(就像您应该是:)一样)，我在一些事情上感到困惑.我只需要一些指导，我只是通过阅读在后面的堆栈溢出中获取建议，但从未提出过任何问题.所以！我对您这个敬虔的堆栈社区的问题是！:

I'm building a pretty simple app that sends reports from a user to an admin. So far i have the entire front end done. I have the menu working, and the report sequence is seemless. Now its time for me to take on the back end. I am a new Swift developer, completely self taught(like you should be :) ) and i'm stumped on a few things. I just need some guidance, i've used stack overflow in the back for advice by just reading but have never asked a question. So! my question to you, the godly stack community, is!:

我有两个用户角色.

1. 普通用户
2. 管理员

根据他们在Firebase中的角色，我希望能够在他们登录时将其重定向到各自的视图控制器.现在！我问了我的一个朋友，他告诉我他们都可以在同一个应用程序中完成，我不需要为管理员制作其他应用程序.我猜这是真的，因为我相信他的判断.我当时在考虑是否要检查

I want to be able to, based on their role in firebase, when they login redirect them to their respective view controller. Now! i asked a friend of mine who told me they can all be done in the same app, i dont need to make a different app for the admins. I'm guessing this is true because i trust his judgement. I was thinking of doing if checks ie

//If role is = to admin
self.performSegue(admin VC)

//else
self.performSegue(homeScreen)

我遇到问题1.分配角色，并且2.从Firebase访问它！

I am having issues 1. assigning the role and 2. accessing it from firebase!

任何见解/技巧都将不胜感激！

Any insight/tips is much appreciated!

谢谢你堆满了神

推荐答案

这将是一个两步过程

第一步是验证用户身份并检索其用户uid

Step one is to authenticate the user and retrieve their user uid

Auth.auth().signIn(withEmail: "[e-mail]", password: "password", 
  completion: { (auth, error) in

    if error != nil {
        let err = error?.localizedDescription
        print(err!)
    } else {
        print("succesfully authd")
        let uid = auth!.uid

        assignUserRole(uid)     
    }
})

假设您有一个标准用户节点，其中包含其他用户数据

Assuming you have a standard users node which contains additional user data

users
  uid_0
   fav_food: "pizza"
   user_role: "admin"
  uid_1
   fav_food: "tacos"
   user_role: "normal_user"

步骤2:然后将调用assignUserRole函数以获取用户信息并设置UI

Step 2: the assignUserRole function will then be called to get the user information and set up the UI

function assignUserRole(theUid: String) {

   let thisUserRef = appRef.child("users").child(theUid)
   thisUserRef.observeSingleEvent(of: .value, with: { snapshot in
       let userDict = snapshot.value as! [String: Any]
       let favFood = userDict["fav_food"] as! String
       let userRole = userDict["user_role"] as! String
       print("  \(favFood)  \(userRole")

      if userRole == "admin" {
        //display admin viewController
      } else {
        //display normal user viewController
     }
   })
}

这篇关于根据角色显示不同的视图控制器-Firebase，Swift 3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IT屋！