Getting an Array From Parse into a Table View (Swift 2) - ios

Question

I am trying to pull an array of strings in the from "my_classes" in the "User" class in Parse. I want each individual string within the array to become a separate cell in a tableview when I tap on the search button. This is my array in "my_classes" : ["Physics","Economics","Pre Calculus"]. I want "Physics" as it's own cell, "Economics" as its own cell, etc.
import UIKit
import Parse
class CardSetClassTableViewController: UITableViewController, UISearchBarDelegate {
// MARK: Outlets
#IBOutlet var searchBar: UISearchBar!
#IBOutlet var resultsTableView: UITableView!
// MARK: Variables
var searchResults = [String]()
// MARK: Actions
#IBAction func newClassBarButtonItemPressed(sender: AnyObject) {
self.performSegueWithIdentifier("newClassSegue", sender: self)
}
// MARK: Functions
override func viewDidLoad() {
super.viewDidLoad()
self.searchBar.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func displayAlert(title: String, message: String) {
let alert = UIAlertController(title: title, message: message, preferredStyle:UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alert, animated: true, completion: nil)
}
func searchBarSearchButtonClicked(searchBar: UISearchBar)
{
if reachabilityStatus == kNOTREACHABLE {
self.displayAlert("No Internet Connection", message: "Please connect to the internet before continuing.")
} else {
searchBar.resignFirstResponder()
print("Search word = \(searchBar.text!)")
let classNameQuery = PFQuery(className:"_User")
classNameQuery.whereKey("my_classes".lowercaseString, equalTo: searchBar.text!.lowercaseString)
let query = PFQuery.orQueryWithSubqueries([classNameQuery])
query.findObjectsInBackgroundWithBlock {
(results: [PFObject]?, error: NSError?) -> Void in
if error != nil {
self.displayAlert("Error", message: error!.localizedDescription)
return
}
if let objects = results {
self.searchResults.removeAll(keepCapacity: false)
for object in objects {
let className = object.valueForKey("my_classes") as! String
self.searchResults.append(className)
}
dispatch_async(dispatch_get_main_queue()) {
self.resultsTableView.reloadData()
self.searchBar.resignFirstResponder()
}
}
}
}
}
// MARK: - Table view data source
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return searchResults.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cell", forIndexPath: indexPath)
cell.textLabel!.text = searchResults[indexPath.row]
return cell
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
{
let classIndexPath = tableView.indexPathForSelectedRow!
let selectedCell = tableView.cellForRowAtIndexPath(classIndexPath)! as UITableViewCell
let spinningActivity = MBProgressHUD.showHUDAddedTo(self.view, animated: true)
spinningActivity.labelText = "Loading"
if reachabilityStatus == kNOTREACHABLE {
spinningActivity.hide(true)
self.displayAlert("No Internet Connection", message: "Please connect to the internet before continuing.")
} else {
// let className : String = String(selectedCell.textLabel!.text!)
self.performSegueWithIdentifier("addCardSet", sender: self)
}
searchBar.resignFirstResponder()
}
}
Thanks!

Answer 1

Try the following...
Edit
var songsArray = [String]()
func fetchUsers() {
let userQuery: PFQuery = PFUser.query()!
//search users by the sepcified username, returns a users! object
//make an array to put the values from the users! array object into
//then append those from your "middle-man" array into your destination array,
//in this example songArray is destination array and songsFromParse is "middle-man" array
userQuery.whereKey("username", equalTo: (username)!)
userQuery.findObjectsInBackgroundWithBlock({
(users, error) -> Void in
var songsFromParse = users!
if error == nil {
if songsFromParse.count != 0 {
self.songsArray = (songsFromParse[i].valueForKey("CurrentSongURLArray") as! Array)
}
self.tableView.reloadData()
} else {
print(error)
}
})
}
You then take your new array that contains the objects that you retrieved, in this example songsArray and use it to populate your tableView. In cellForRowAtIndexPath ...
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell ID")
cell?.textLabel?.text = songsArray[indexPath]
return cell!
}