Pass information from Parse to the TableiewController - xcode

Question

I have an issue when I'm trying to pass the information from the database from Parse to my TableViewController. I think that is the way I'm calling to the name and password.
When I push the View Users button the app crash.
I put my git if you need more information. https://github.com/emmanuelcu/ParseProject.git
class TableViewController: UITableViewController{
var dataParse:NSMutableArray = NSMutableArray()
var count:Int = 0
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
//PFQuery
let query = PFQuery(className: "LoginCredentials")
query.findObjectsInBackgroundWithBlock {
(objects: [PFObject]? , error: NSError?) -> Void in
if(error == nil){
print("The current number of users is \(objects!.count)")
self.count = objects!.count
self.tableView.reloadData()
} else {
print("Error")
}
}
}
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 Incomplete implementation, return the number of sections
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
//return self.dataParse.count
return self.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "CellData"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! TableViewCell
// Configure the cell...
cell.password.text = dataParse[indexPath.row]["name"] as? String
cell.name.text = dataParse[indexPath.row]["user"] as? String
print("Error")
return cell
}

Answer 1

When you run your query you never assign your objects to your data source, only the number of objects that you receive. Also you're force unwrapping that count without checking if objects has a count, which is possible even without an error.

Answer 2

It works like this dataParse array is empty you should populate it, or should disable view users button when it is empty etc.
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cellIdentifier = "CellData"
let cell = tableView.dequeueReusableCellWithIdentifier(cellIdentifier, forIndexPath: indexPath) as! TableViewCell
// Configure the cell...
if dataParse.count > indexPath.row {
cell.password.text = dataParse[indexPath.row]["name"] as? String
cell.name.text = dataParse[indexPath.row]["user"] as? String
}
print("Error")
return cell
}