FirebaseUI TableViewDataSource显示数据值

Question

我正在尝试使用FirebaseUI在UITableViewController中显示数据。一切似乎都有效，但它显示数据名称而不是值。我的代码如下。怎么可以改变呢？

import UIKit
import Firebase
import FirebaseUI

class TableViewController: UITableViewController {


  var firebaseRef = Firebase(url:"https://the-lighthouse-app.firebaseio.com/states")
  var dataSource: FirebaseTableViewDataSource!

  override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    self.dataSource = FirebaseTableViewDataSource(ref: self.firebaseRef, cellReuseIdentifier: "Cell1", view: self.tableView)

    self.dataSource.populateCellWithBlock { (cell: UITableViewCell, obj: NSObject) -> Void in
        let snap = obj as! FDataSnapshot

        // Populate cell as you see fit, like as below
        cell.textLabel?.text = snap.key as String
    }

    self.tableView.dataSource = self.dataSource
  }


  override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
  }


}