In the code below, self.arrayOfLikers is an array of Pointers to Parse User Objects. Which looks like this on Parse:
var query = PFQuery(className: "Item")
query.includeKey("likedBy")
query.getObjectInBackgroundWithId(theObjectIdOfTheItem!) { (returnedItem, error) in
if error != nil {
print(error)
}
else {
returnedItem?.fetchInBackgroundWithBlock({ (fetchedReturnedItem, error) in
if error != nil {
print(error)
}
else {
dispatch_async(dispatch_get_main_queue(),{
self.arrayOfLikers = fetchedReturnedItem!["likedBy"] as! [PFUser]
print("about to print the arrayOfLikers")
print(self.arrayOfLikers)
self.tableView.reloadData()
})
}
})
}
}
When I print my self.arrayOfLikers I can see that the first index contains a correctly retrieved PFUser object. Below is a print statement from Xcode:
In another viewController, I am storing these pointers when the user taps the "like" button. This is how I am storing those pointers:
Creation of the userPointer:
let userPointer = PFObject(outDataWithClassName: "User", objectId: user?.objectId)
(oddly, the Parse docs use withoutDataWithClassName, but when I put this in, Xcode keeps making me change it outDataWithClassName, and it compiles, so I guess this is correct?)
Storing the userPointer: (please note, theItemObject is an object set by a previous VC):
theItemObject!.addObject(userPointer, forKey: "likedBy")
Consequently, Parse via Xcode gives me this error:
2016-03-30 23:38:47.749 Trashly[5482:1512409] [Error]: object not found for get (Code: 101, Version: 1.12.0)
Optional(Error Domain=Parse Code=101 "object not found for get" UserInfo={code=101, temporary=0, error=object not found for get, NSLocalizedDescription=object not found for get})
Any ideas why my query is not getting any user objects but the first one?
Related
when i run the following code i get this error.
['FIRESTORE INTERNAL ASSERTION FAILED: Invalid document reference. Document references must have an even number of segments, but User has 1']
func saveLabel(uid: String, label: String){
let userRef = db.collection("User").document(uid)
userRef.updateData(["label": label]) { (error) in
if error == nil {
print("updated")
}else{
print("not updated")
}
}
}
This error almost certainly means that uid is empty. You should log it to make sure.
Could anyone tell me why my startingPoints array is still at 0 elements? I know that I am getting objects returned during the query, because that print statement prints out each query result, however it seems like those objects are not getting appended to my local array. I've included the code snippet below...
func buildStartSpots() -> Void {
let queryStartingPoints = PFQuery(className: "CarpoolSpots")
queryStartingPoints.whereKey("spotCityIndex", equalTo: self.startingCity)
queryStartingPoints.findObjectsInBackgroundWithBlock{(objects: [PFObject]?, error: NSError?) -> Void in
if error == nil {
for object in objects! {
print("starting point: \(object)")
self.startingPoints.append(object)
}
} else {
// Log details of the failure
print("Error: \(error!) \(error!.userInfo)")
}
}
print("starting points")
dump(self.startingPoints)
}
While I have no experience in Parse, the block is asynchronously executed and likely non-blocking as dictated by the method name of the API call. Therefore, it is not guaranteed that the data would be available at the time you call dump, since the background thread might still be doing its work.
The only place that the data is guaranteed to be available at is the completion block you supplied to the API call. So you might need some ways to notify changes to others, e.g. post an NSNotification or use event stream constructs from third party libraries (e.g. ReactiveCocoa, RxSwift).
When you try to access the array, you need to use it within the closure:
func buildStartSpots() -> Void {
let queryStartingPoints = PFQuery(className: "CarpoolSpots")
queryStartingPoints.whereKey("spotCityIndex", equalTo: self.startingCity)
queryStartingPoints.findObjectsInBackgroundWithBlock{(objects: [PFObject]?, error: NSError?) -> Void in
if error == nil {
for object in objects! {
print("starting point: \(object)")
**self.startingPoints.append(object)**
}
//use it here
startingPoints xxx
} else {
// Log details of the failure
print("Error: \(error!) \(error!.userInfo)")
}
}
print("starting points")
dump(self.startingPoints)
}
I am able to get the application functioning as intended and will close this answer out.
It seems as though that the startingPoints array is not empty, and the values I need can be accessed from a different function within that same class.
The code snippet I am using to access my locally stored query results array is here:
for object in self.startingPoints {
let startingLat = object["spotLatitude"] as! Double
let startingLong = object["spotLongitude"] as! Double
let carpoolSpotAnnotation = CarpoolSpot(name: object.valueForKey("spotTitle") as! String, subTitle: object.valueForKey("spotSubtitle") as! String, coordinate: CLLocationCoordinate2D(latitude: startingLat, longitude: startingLong))
self.mapView.addAnnotation(carpoolSpotAnnotation)
The code snippet above is located within my didUpdateLocations implementation of the locationManager function, and with this code, I am able to access the query results I need.
I'm trying to query a nonexistent object like this code bellow, but always "Mike" is found. What could be wrong? Everything is working great (Save, Delete, Update and Query without error recognition).
var query = PFQuery(className:"Restaurant")
query.whereKey("clientname", equalTo:"Mike")
query.findObjectsInBackgroundWithBlock { (objects, error) -> Void in
if (error == nil) {
print ("Found")
}
else {
print ("Not Found")
}
}
Try checking (debugging) what "objects" actually is. I think you will see that it is an empty array, meaning it did NOT find Mike.
An empty array of results is not a query error. The query succeeds, but finds no objects. So not getting an error does not mean "Found". It just means there was no error.
I'm trying to do a query by selectedBook (this is a string of selectedBook's objectID). However, I'm getting this error: "[Error]: pointer field book needs a pointer value (Code: 102, Version: 1.8.2)." I believe I have to do the query with the actual book object rather than the objectID, how can I go about doing this? Thanks in advance!!
var query = PFQuery(className:"UserTags")
query.whereKey("book", equalTo:selectedBook)
query.findObjectsInBackgroundWithBlock { (objects:[AnyObject]?, error:NSError?) -> Void in
if error == nil {
// The find succeeded.
print("Successfully retrieved \(objects!.count) tags.")
// Do something with the found objects
if let objects = objects as? [PFObject] {
for object in objects {
print(object.objectId)
}
}
} else {
// Log details of the failure
print("Error: \(error!)")
}
Figured it out. Here is the code in case someone else runs into this:
let pointer = PFObject(withoutDataWithClassName:"Book", objectId: booksObjectID)
var query = PFQuery(className: "UserTags")
query.whereKey("book", equalTo: pointer)
query.includeKey("book")
query.findObjectsInBackgroundWithBlock { (objects:[AnyObject]?, error:NSError?) -> Void in
for object in objects! {
self.userTags.addObject(object)
}
}
From documentation:
InvalidQuery - 102 - Error code indicating you tried to query with a
datatype that doesn't support it, like exact matching an array or
object.
The error description tells you a lot. This kind of querying does not support queuing by object (in your case, book). You have to use a datatype that is supported - for example query by book ID or name which are more primitive data types.
I'm using the TwitterKit SDK and listing a group of Tweets. The function has an error handler that stores any tweets that have been removed by the user and thus not shown. I am attempting to retrieve these particular ID's from the NSError user info dictionary. I can find them but end up with an anyObject.
This code is getting the tweet objects and filtering out the bad ones...
// load tweets with guest login
Twitter.sharedInstance().logInGuestWithCompletion {
(session: TWTRGuestSession!, error: NSError!) in
// Find the tweets with the tweetIDs
Twitter.sharedInstance().APIClient.loadTweetsWithIDs(tweetIDs) {
(twttrs, error) - > Void in
// If there are tweets do something magical
if ((twttrs) != nil) {
// Loop through tweets and do something
for i in twttrs {
// Append the Tweet to the Tweets to display in the table view.
self.tweetsArray.append(i as TWTRTweet)
}
} else {
println(error)
}
println(error)
if let fails: AnyObject = error.userInfo?["TweetsNotLoaded"] {
println(fails)
}
}
}
The println(error) dump is...
Error Domain=TWTRErrorDomain Code=4 "Failed to fetch one or more of the following tweet IDs: 480705559465713666, 489783592151965697." UserInfo=0x8051ab80 {TweetsNotLoaded=(
480705559465713666,
489783592151965697
), NSLocalizedDescription=Failed to fetch one or more of the following tweet IDs: 480705559465713666, 489783592151965697.}
and refining the results from the error "error.userInfo?["TweetsNotLoaded"]" I can end up with...
(
480705559465713666,
489783592151965697
)
My question is, is there a better way to get this data?
If not, how am I able to convert the (data, data) anyObject into an array of [data, data] ?
Best guess is that TweetsNotLoaded is an NSArray of NSNumber (or maybe NSString, not sure how they're coding/storing message ids), so you can cast the result and go from there:
if let tweetsNotLoaded = error.userInfo?["TweetsNotLoaded"] as? [String] {
// here tweets not loaded will be [String], deal with them however
...
}
If that doesn't work, assume they're longs and use:
if let tweetsNotLoaded = error.userInfo?["TweetsNotLoaded"] as? [Int64] {
// here tweets not loaded will be [Int64], deal with them however
...
}