从 TableView 行获取 ObjectId (Parse)

Question

我有一个名为“Restaurantes”（英文餐厅）的 Parse 类，目前我可以在 CustomTableView 中列出所有餐厅。

现在我的目标是当我从列表中选择一家餐厅时，它会显示每家餐厅的“菜单”。为此，我必须使用 prepareForSegue 传递 Restaurant ObjectId，并在新的 ViewController 中有一个查询来列出该餐厅 ObjectId 的所有“菜单”。

如何获取用户点击的餐厅的 ObjectId？ （迅速）

我的代码：

import UIKit
import Parse
import AVFoundation

class ListaTableViewController: UITableViewController {

var queryArray: [PFObject] = [PFObject]()


override func viewDidLoad() {
    super.viewDidLoad()
    var query = PFQuery(className:"Restaurantes")
    query.findObjectsInBackgroundWithBlock {
        (objects: [AnyObject]?, error: NSError?) -> Void in

        if error == nil {
            println("Successfully retrieved \(objects!.count) Restaurantes.")
            if let _objects = objects as? [PFObject] {
                self.queryArray = _objects
                self.tableView.reloadData()
            }
        } else {
            println("Error: \(error!) \(error!.userInfo!)")
        }
    }
}

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

// MARK: - Table view data source

override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
    // #warning Potentially incomplete method implementation.
    // Return the number of sections.
    return 1
}

override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    // #warning Incomplete method implementation.
    // Return the number of rows in the section.
    return queryArray.count
}


override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> ListaTableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath) as! ListaTableViewCell

    //Insert text in tableview
    let restaurante = queryArray[indexPath.row] as! PFObject
    cell.textCell.text = restaurante.objectForKey("nome") as! String



    //Insert images in tableview
    if let userPicture = restaurante.objectForKey("imagem1") as? PFFile {

        userPicture.getDataInBackgroundWithBlock { (imageData: NSData?, error: NSError?) -> Void in
            if (error == nil) {
                cell.imageBg.image = UIImage(data:imageData!)                }
        }
    }


    return cell
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

    if segue.identifier == "cell" {
        if let destination = segue.destinationViewController as? MenuPageViewController {
            if let blogIndex = tableView.indexPathForSelectedRow()?.row {




            }
        }
    }

}


}

Answer 1

应该是这样的

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

    if segue.identifier == "cell" {
        if let destination = segue.destinationViewController as? MenuPageViewController {
            if let blogIndex = tableView.indexPathForSelectedRow()?.row {
                // Get the object restaurant object from your array
                 let restaurante = queryArray[blogIndex] as! PFObject
                // set object id to the property in destination 
                 destination.resturantId = restaurant.objectId
                }
            }
    }

}