Pass data fetched from Cloudkit from one viewcontroller to another - ios

Question

I have a button that calls this function and also calls performSegueWithIdentifier. Segue occurs before the data is the two query returns data. How do i get round this?
-(void)recommendSomeone {
NSString *currentUserID = [NSString stringWithFormat:#"%#%#",#"KU",self.liaResponse[#"id"]];
CKContainer *myContainer = [CKContainer defaultContainer];
CKDatabase *publicDatabase = [myContainer publicCloudDatabase];
CKRecordID *currentUserRecordID = [[CKRecordID alloc] initWithRecordName:currentUserID];
CKReference *recordToMatch = [[CKReference alloc] initWithRecordID:currentUserRecordID action:CKReferenceActionNone];
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"contactList CONTAINS %#",recordToMatch];
CKQuery *query = [[CKQuery alloc] initWithRecordType:#"knotworkGhostUsers" predicate:predicate];
[publicDatabase performQuery:query inZoneWithID:nil completionHandler:^(NSArray *results, NSError *error) {
if (error) {
// Error handling for failed fetch from public database
NSLog(#"error querying knotwork users %#", error);
}
else {
// Display the fetched records
self.randomGhostUser = results[arc4random_uniform([results count])];
NSLog(#"this is the first name %#", self.randomGhostUser[#"firstname"]);
NSLog(#"knotwork ghost users for current user data returned ordinary title %#",results);
NSString* searchQuery = #" ";
NSString *kuTitle = [self.randomGhostUser[#"title"] lowercaseString];
NSArray *keyWords = #[#"developer",#"networking",#"sales manager",#"engineer",#"doctor",#"facility manager"];
for(NSString* keyWord in keyWords){
NSRange checkResult = [kuTitle rangeOfString:keyWord];
if(checkResult.location != NSNotFound){
searchQuery = [NSString stringWithFormat:#"%#%#%#",searchQuery,#" ",keyWord];
}
}
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"allTokens tokenmatches[cdl] %# AND contactList CONTAINS %#",searchQuery,recordToMatch];
CKQuery *query2 = [[CKQuery alloc] initWithRecordType:#"knotworkGhostUsers" predicate:predicate];
[publicDatabase performQuery:query2 inZoneWithID:nil completionHandler:^(NSArray *response, NSError *error) {
if (error) {
// Error handling for failed fetch from public database
NSLog(#"error querying knotwork users %#", error);
}
else {
// Display the fetched records
self.recommendedGhostUser = response;
NSLog(#"knotwork users data returned after recom %#", self.recommendedGhostUser);
}
}];
}
[self performSegueWithIdentifier:#"Recommend" sender:nil];
}];
}
emphasized text

Answer 1

You have to replace your segue and put it inside your second completion-block.
Because otherwise your completion-block will be called after you already have pushed the segue.
[publicDatabase performQuery:query2 inZoneWithID:nil completionHandler:^(NSArray *response, NSError *error) {
if (error) {
// Error handling for failed fetch from public database
NSLog(#"error querying knotwork users %#", error);
}
else {
// Display the fetched records
self.recommendedGhostUser = response;
NSLog(#"knotwork users data returned after recom %#", self.recommendedGhostUser);
//Put it in here
[self performSegueWithIdentifier:#"Recommend" sender:nil];
}
}];
Also you could use prepareForSegue to pass your value to the second controller:
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
// Set Segue name from storyboard
if ([[segue identifier] isEqualToString:#"seguename"])
{
// Get reference to the destination view controller
YourViewController *vc = [segue destinationViewController];
// Pass any objects to the view controller here, like...
[vc setMyObjectHere:object];
}
}
(Link to segue-answer)