Firebase tableview not populating, Swift - swift

Question

I have data in my db and can search for an individual record, that's working fine. But when I try to simply populate a tableview with all of the db records its not receiving/displaying any data.
here is my code:
struct drinkStruct {
let pub: String!
let rating: String!
let price: String!
}
override func viewDidLoad() {
super.viewDidLoad()
loadDrinks()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
#IBAction func homeClicked(_ sender: Any) {
homeClicked()
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return posts.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
let label1 = cell.viewWithTag(1) as! UILabel
label1.text = posts[indexPath.row].pub
let label2 = cell.viewWithTag(2) as! UILabel
label2.text = posts[indexPath.row].rating
let label3 = cell.viewWithTag(3) as! UILabel
label3.text = posts[indexPath.row].price
return cell
}
func loadDrinks(){
let databaseRef = Database.database().reference().child("Drinks")
ref = Database.database().reference()
databaseRef.queryOrderedByKey().observe(.childAdded, with: { (snapshot) in
if let valueDictionary = snapshot.value as? [AnyHashable:String]
{
let pub = valueDictionary["pub"]
let rating = valueDictionary["rating"]
let price = valueDictionary["price"]
self.posts.insert(drinkStruct(pub: pub, rating: rating, price: price), at: 0)
}
})
self.tableview.reloadData()
}
And here is my db structure:
Am I doing something blatantly obviously wrong? Or can anyone see what's causing no data to load?
There are no errors/unused variables etc etc.
Thanks in advance!

Answer 1

I think the following should do the job.
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
override func viewDidLoad() {
super.viewDidLoad()
//getting a reference to the node //
databaseRef = Database.database().reference().child("Drinks")
//observing the data changes
databaseRef.observe(DataEventType.value, with: { (snapshot) in
if snapshot.childrenCount > 0 {
// clearing the list //
self.posts.removeAll()
// iterating through all the values //
for drinks in snapshot.children.allObjects as! [DataSnapshot] {
let drinkObject = drinks.value as! [String: AnyObject]
let drinkPub = drinkObject["pub"]
let drinkRating = drinkObject["rating"]
let drinkPrice = drinkObject["price"]
//creating a drinkStruct object with the model //
let drinkModel = drinkStruct(pub: drinkPub as! String?, rating: drinkRating as! String?, price: drinkPrice as! String?)
//appending it to list
self.posts.append(drinkModel)
}
// reloading data //
self.tableView.reloadData()
}
})
}
var posts = [drinkStruct]()
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return posts.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! YourCustomTableViewCell
let drink: drinkStruct
drink = posts[indexPath.row]
cell.label1.text = drink.pub
cell.label2.text = drink.rating
cell.label3.text = drink.price
return cell
}
}

Answer 2

For the newbie that's here in my footsteps, I solved this by doing a lot of things.
You need to create the tableview & cell layout in the storyboard. Then you need a cell class that dictates/assigns what's happening in each cell(imageviews, labels etc) as well as a model class for whatever you're looking up, whatever the object may be.
This is the code I used for my function in which I populate the info in the cells with the data from Firebase:
func loadDrinks(){
Database.database().reference().child("Drinks").observe(.childAdded) { (snapshot: DataSnapshot) in
if let dict = snapshot.value as? [String: Any] {
let pub = dict["pub"] as! String
let rating = dict["rating"] as! String
let price = dict["price"] as! String
let drink = Drink(pub: pub.capitalized, rating: rating.capitalized, price: price.capitalized)
self.drinks.append(drink)
print(self.drinks)
self.tableview.reloadData()
}
}
}
This was a Newbie 101 question - my bad.