ios - 从 TableView 行获取 ObjectId(解析)

Question

我有一个名为“Restaurantes”(英语餐厅)的解析类，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，它会显示每个餐厅的“菜单”。为此，我必须使用prepareForSegue传递餐厅ObjectId，并在新的ViewController中进行查询以列出该餐厅ObjectId的所有“菜单”。

如何获取用户点击的餐厅的ObjectId？ ( swift )

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
                }
            }
    }

}