How to display CloudKit RecordType instances in a tableview controller - swift

Question

To my knowledge, the following code (or very close to it) would retrieve one cloudkit instance from the recordtype array...
let pred = NSPredicate(value: true)
let query = CKQuery(recordType: "Stores", predicate: pred)
publicDatabase.performQuery(query, inZoneWithID: nil) { (result, error) in
if error != nil
{
print("Error" + (error?.localizedDescription)!)
}
else
{
if result?.count > 0
{
let record = result![0]
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.txtDesc.text = record.objectForKey("storeDesc") as? String
self.position = record.objectForKey("storeLocation") as! CLLocation
let img = record.objectForKey("storeImage") as! CKAsset
self.storeImage.image = UIImage(contentsOfFile: img.fileURL.path!)
....(& so on)
However, how and when (physical location in code?) would I query so that I could set each cell to the information of each instance in my DiningType record?
for instance, would I query inside the didreceivememory warning function? or in the cellforRowatIndexPath? or other!
If I am misunderstanding in my above code, please jot it down in the notes, all help at this point is valuable and extremely appreciated.

Answer 1

Without a little more information, I will make a few assumptions about the rest of the code not shown. I will assume:
You are using a UITableView to display your data
Your UITableView (tableView) is properly wired to your viewController, including a proper Outlet, and assigning the tableViewDataSource and tableViewDelegate to your view, and implementing the required methods for those protocols.
Your data (for each cell) is stored in some type of collection, like an Array (although there are many options).
When you call the code to retrieve records from the database (in this case CloudKit) the data should eventually be stored in your Array. When your Array changes (new or updated data), you would call tableView.reloadData() to tell the tableView that something has changed and to reload the cells.
The cells are wired up (manually) in tableView(:cellForRowAtIndexPath:). It calls this method for each item (provided you implemented the tableView(:numberOfRowsInSection:) and numberOfSectionsInTableView(_:)
If you are unfamiliar with using UITableView's, they can seem difficult at first. If you'd like to see a simple example of wiring up a UITableView just let me know!

Answer 2

First, I had to take care of the typical cloudkit requirements: setting up the container, publicdatabase, predicate, and query inputs. Then, I had the public database perform the query, in this case, recordtype of "DiningType". Through the first if statement of the program, if an error is discovered, the console will print "Error" and ending further action. However, if no run-time problem is discovered, each result found to be relatable to the query is appended to the categories array created above the viewdidload function.
var categories: Array<CKRecord> = []
override func viewDidLoad() {
super.viewDidLoad()
func fetchdiningtypes()
{
let container = CKContainer.defaultContainer()
let publicDatabase = container.publicCloudDatabase
let predicate = NSPredicate(value: true)
let query = CKQuery(recordType: "DiningType", predicate: predicate)
publicDatabase.performQuery(query, inZoneWithID: nil) { (results, error) -> Void in
if error != nil
{
print("Error")
}
else
{
for result in results!
{
self.categories.append(result)
}
NSOperationQueue.mainQueue().addOperationWithBlock( { () -> Void in
self.tableView.reloadData()
})
}
}
}
fetchdiningtypes()