Firebase and Swift 3 code not executing anymore - ios

Question

I tried to convert my code func by func to Swift 3. I have to say that I had fully working project before. Now I have problem where I have no errors and just some warnings but some of the functions are not being executed. What should cause this?
I only assume that those given functions are faulty because these are the parts where I am not getting anything even print.
These are some of my functions that worked before but not with Swift 3:
//With this I get selected brand products values like product name, nicotine, flavor etc..
let ref = FIRDatabase.database().reference().child("Snuses").queryOrdered(byChild: "Brand").queryEqual(toValue: brandName)
ref.observeSingleEvent(of: .value, with: { (snapshot) in
if snapshot.exists(){
if let products = (snapshot.value as AnyObject).allValues as? [[String:AnyObject]]{
self.productsValue = products
self.productsTable.reloadData()
}
}
})
//With this fucntion I get the products count.
let ref = FIRDatabase.database().reference().child("Snuses").queryOrdered(byChild: "Brand").queryEqual(toValue: filteredBrands[indexPath.row])
ref.observeSingleEvent(of: .value, with: { (snapshot) in
if snapshot.exists(){
if let products = (snapshot.value as AnyObject).allValues as? [[String:AnyObject]]{
var count = (snapshot.childrenCount)
snusProductCountLabel.text = "\(count) products"
}
}
})
//Parse snus brands
func parseSnuses(){
let ref = FIRDatabase.database().reference().child("Brands").queryOrderedByKey()
ref.observe(.childAdded, with: { (snapshot) in
self.brands.append(snapshot.key)
print(snapshot.key)
self.snusBrandsTableView.reloadData()
}){ (error) in
}
Anything I can do different please tell me! Those functions are in different ViewControllers.
Edit: this is my JSON tree
{
"Snuses" : {
"Catch Eucalyptus White Large" : {
"Brand" : "Catch",
"Products" : "Catch Eucalyptus White Large",
"PorionWeight" : 21.6,
"flavor" : "Tobacco, Eucalyptus",
"nicotine" : 8.0,
"PortionsCan" : 24,
"shipping weight" : 39
},
And these are security rules:
{
"rules": {
".read": "true",
".write": "true",
"Snuses": {
".indexOn": "Brand"
}
}
}

Answer 1

I believe the
if let products = (snapshot.value as AnyObject)
.allValues as? [[String:AnyObject]]{
is the issue.
Try this as a test to see if it prints the data from the snapshot:
let ref = FIRDatabase.database().reference().child("Snuses")
.queryOrdered(byChild: "Brand").queryEqual(toValue: brandName)
ref.observeSingleEvent(of: .value, with: { (snapshot) in
if snapshot.exists() {
let dict = snapshot?.value as! [String: [String:String]]
let productsArray = Array(dict)
for row in productsArray {
print(row)
}
}
})
for a non-swifty test, you can also try this inside the closure instead of the above
let d2 = snapshot?.value as! NSDictionary
let a2 = d2.allValues
for r2 in a2 {
print(r2)
}
one more option:
let q = snapshot?.value as! [String: AnyObject]
let a3 = Array(q)
for r3 in a3 {
print(r3)
}
I don't know what your tableView is expecting in the array but one of those should cover it.