Cannot convert the value of type '[String]' to expected argument type 'String' : while appending arrays to get data from Fireabse in table view cell

Question

Getting error while appending arrays in snapshot. I want to retrieve all values from these arrays EngNames , UrNames and cakeImages in the snapshot so the values can appear on table view cells. However I can retrieve all values of Cake Rate Label and Eng Name Label from Firebse but i want just retrieve all the cakeRatelabel values of rate from firebase and rest of the data that is EngNames , UrNames and cakeImages i want to retrieve localy from defined arrays and images in assets respectively. help me to accomplish this, any help will be highly appreciated.

Firebase Structure

View Controller

TestTabelViewController

   import UIKit
   import Firebase

   class TestTableViewController: UITableViewController {

@IBOutlet var cakeTableView: UITableView!

var ref = FIRDatabase.database().reference()


struct Cake {
    let cakeEngNames: String
    let cakeUrNames: String
    let cakeImages: UIImage
    var cakeRates: String
}

var cakes = [Cake]()

var cakeImages = [UIImage(named : "bakery_almond_cake")!,UIImage(named : "bakery_azna_mental_cake")!, UIImage(named : "bakery_black_forest_cake")!, UIImage(named : "bakery_checker_cake")!, UIImage(named : "bakery_cheese_cake")!, UIImage(named : "bakery_chocolate_cake")!, UIImage(named : "bakery_coconut_macaroni_cake")!, UIImage(named : "bakery_cream_cake")!, UIImage(named : "bakery_cream_layer_cake")!, UIImage(named : "bakery_fruit_cake")!, UIImage(named : "bakery_lemon_layer_cake")!, UIImage(named : "bakery_pineapple_cake")!, UIImage(named : "bakery_plain_cake")!,UIImage(named : "bakery_pulm_cake_almond")!,UIImage(named : "bakery_rich_plum_cake")!,UIImage(named : "bakery_swiss_cake")!]

var EngNames = ["Almond Cake", "Azna cake", "Black forest Cake","checker cake", "cheese cake", "chocolate cake","coconut cake", "cream cake", "cream layer cake", "fruit cake", "lemon cake", "pine apple cake", "plain cake", "plum cake", "rich cake", "swiss cake"]

var UrNames = ["Almond Badam cake", "Azna wala cake", "Black kala forest Cake","checker  wala cake", "cheese wala cake", "chocolate wala cake","coconut wala cake", "cream wala cake", "cream wala layer cake", "fruit wala cake", "lemon wala cake", "pine apple wala cake", "plain wala cake", "plum wala cake", "rich wala cake", "swiss wala cake"]


override func viewDidLoad() {
    super.viewDidLoad()

    let almondSnap = ref.child("Hyderabad").child("Bakery").child("Cake")
    almondSnap.observe( .value, with: { (snapshot) in
        if snapshot.hasChildren(){
            for snap in snapshot.children {
               if let node = snap as? FIRDataSnapshot ,  let rate = node.value as? Int {
                    self.cakes.append(Cake(cakeEngNames: EngNames,
                                           cakeUrNames: UrNames,
                                           cakeImages: cakeImages,
                                           cakeRates: String(rate)))
                }
            }

            self.cakeTableView.reloadData()
        }
    })

}

override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return self.cakes.count
}

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = self.tableView.dequeueReusableCell(withIdentifier: "TestTableViewCell", for: indexPath) as! TestTableViewCell

    cell.cakeImage.image = self.cakes[indexPath.row].cakeImages
    cell.cakeEngLabs.text = self.cakes[indexPath.row].cakeEngNames
    cell.cakeUrLabs.text = self.cakes[indexPath.row].cakeUrNames
    cell.cakeRateLabs.text = self.cakes[indexPath.row].cakeRates
    return cell
}
}

cakeEngNames: EngNames, cakeUrNames: UrNames, cakeImages: cakeImages, — Xcodian Solangi
– Xcodian Solangi, Commented Mar 11, 2017 at 9:43
self.cakes.append........................cakeEngNames: EngNames, cakeUrNames: UrNames, cakeImages: cakeImages — Xcodian Solangi
– Xcodian Solangi, Commented Mar 11, 2017 at 9:44
The error message is clear; the constructor for Cake takes a String and you are attempting to pass an array of String; you need to find the appropriate index and use that with the arrays. How do you know which cake the firebase record applies to? — Paulw11
– Paulw11, Commented Mar 11, 2017 at 9:46
@Xcodian You want only rate from Firebase? Because other details like name you have created array of it? — Nirav D
– Nirav D, Commented Mar 11, 2017 at 9:56

George Green · Accepted Answer · 2017-03-13 09:13:04Z

4

+100

You are passing arrays to String parameters in your initialiser for the Cake struct. Try something like

for (i, snap) in snapshot.children.enumerated() {
    if let node = snap as? FIRDataSnapshot ,  let rate = node.value as? Int {
        self.cakes.append(Cake(cakeEngNames: EngNames[i],
                               cakeUrNames: UrNames[i],
                               cakeImages: cakeImages[i],
                               cakeRates: String(rate)))
    }
}

assuming that the three arrays you define at the top, are supposed to map to the various parameters of the different cakes. Here you take the relevant entry from each array, rather than passing the whole array.

answered Mar 13, 2017 at 9:13

George Green

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3 Comments

Xcodian Solangi Over a year ago

thanx alot dear,

Xcodian Solangi Over a year ago

i will award you bounty but there is timing error in 23 hours

Xcodian Solangi Over a year ago

bounties awarded :) thanx again.

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