I get this error when using setPropertiesToFetch. It's odd because info1 and info2 do exist in my entity.
let fetchRequest = NSFetchRequest()
let entityDescription = NSEntityDescription.entityForName("Table1", inManagedObjectContext: managedObjectContext)
fetchRequest.resultType = .DictionaryResultType
fetchRequest.returnsDistinctResults = true
fetchRequest.propertiesToFetch = ["info1", "info2"]
fetchRequest.includesSubentities = true
fetchRequest.entity = entityDescription
do {
let result = try managedObjectContext.executeFetchRequest(fetchRequest)
print(result)
} catch {
let fetchError = error as NSError
print(fetchError)
}
Without propertiesToFetch line I get this output:
[{
info1 = data1;
info2 = data2;
info3 = data3;
}, {
...
}]
Entity needs to be set before propertiesToFetch can be used.
fetchRequest.entity = entityDescription
fetchRequest.propertiesToFetch = ["info1", "info2"]
fetchRequest.includesSubentities = true
Related
let tango_id = Expression<Int64>("tango_id")
let e_score = Expression<Double>("e_score")
let interval = Expression<Double>("interval")
let next_revision_date = Expression<Date>("next_revision_date")
let bookmark = Expression<Bool>("bookmark")
let bookmark_date = Expression<Date>("bookmark_date")
let learnt = Expression<Bool>("learnt")
do {
try userdb.run(userTable.create { t in
t.column(tango_id, primaryKey: true)
t.column(e_score)
t.column(interval)
t.column(next_revision_date)
t.column(bookmark)
t.column(learnt)
})
}
catch let error {
print("creation failed: \(error)")
}
I want to add a column for bookmark_date which is defined as Expression
Every child has a pick up point location consists of latitude and longitude that i fetch from sqlite database. I have childIdArray which is array of childID's. I want to calculate the estimate time(ETA) from current location of their respective drivers location i fetch from getCurrentLocationOfRespectiveDrivers() method with pickUp point of children that i fetch from sqlite database in form of array of latitude and longitude.
but i get error
fatal error: Array index out of range
in getCurrentLocationOfRespectiveDrivers() method.
Any help would be highly appreciated.. thanks in advance
var etaArray : [String] = []
var estimatedTime : String?
var latitudeArray : [Double] = []
var longitudeArray : [Double] = []
override func viewDidLoad() {
super.viewDidLoad()
let rs = ModelManager.sharedInstance.fetchingPickUpAnnotationsArray(ChildDetailsVC.parentID)
latitudeArray = rs.latPickUp
longitudeArray = rs.longPickUp
print("pickUpLatitudeArray = \(latitudeArray)")
print("pickUpLongitudeArray = \(longitudeArray)")
let result = ModelManager.sharedInstance.fetchingChildren( ChildDetailsVC.parentID)
self.childNameArray = result.childNames
self.childImageArray = result.childImages
self.childIDArray = result.chidIDs
self.childDriverArray = result.childDrivers
getCurrentLocationOfRespectiveDrivers()
for (var i = 0; i < childIDArray.count; i++)
{
etaArray.append("")
}
}
func getCurrentLocationOfRespectiveDrivers()
{
for( var i = 0 ; i < latitudeArray.count ; i++)
{
let url:NSURL = NSURL(string:"http://development.ssntpl.com/gogo_app/api.php?action=getDriverCurrentLocation")!
let request = NSMutableURLRequest(URL:url)
request.HTTPMethod = "POST"
let post:NSString = "child_id=\(childIDArray)"
request.HTTPBody = post.dataUsingEncoding(NSUTF8StringEncoding)
let task = NSURLSession.sharedSession().dataTaskWithRequest(request)
{
data, response, error in
if error != nil
{
print("error is \(error)")
return;
}
do
{
let myJSON = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
if let parseJSON = myJSON
{
let Status = parseJSON["status"] as! Int
let Code = parseJSON["code"] as! Int
if (Status == 1 && Code == 200)
{
let Result = parseJSON["result"] as! NSArray
self.etaArray.removeAll()
//here i get the crash fatal error: Array index out of range
let latitudePickUp = self.latitudeArray[i]
let longitudePickUp = self.longitudeArray[i]
let CoordinatePickUp = CLLocation(latitude: latitudePickUp, longitude: longitudePickUp)
for res in Result
{
self.estimatedTime = ""
if (res["exists"] as! Int == 1)
{
let lastLatitude = res["latitude"] as! CLLocationDegrees
let lastLongitude = res["longitude"] as! CLLocationDegrees
let Location : CLLocation = CLLocation(latitude: lastLatitude, longitude: lastLongitude)
let meters:CLLocationDistance = Location.distanceFromLocation(CoordinatePickUp)
print(meters)
let ID = res["child_id"] as! String
let time = round(meters/40000 * 60)
self.estimatedTime = String(time)
self.etaArray.append(self.estimatedTime!)
}
else
{
self.etaArray.append("")
}
}
}
else
{
}
}
}
catch
{
print(error)
}
}
//executing the task
task.resume()
}
dispatch_async(dispatch_get_main_queue(), { () -> Void in
self.tableView.reloadData()
})
}
I've been tying to figure out this one for a few days now... Here is my original code:
if let ratingDic = dictionary["rating"] as? [String: Any],
let ratingId = ratingDic["id"] {
searchResult.ratingID = ratingId as! String
}
Here is my api:
"amount" = "50.00";
"rating" = {
"name" = "Platinum";
"id" = 5
I'm pretty sure I need to use "valueForKey" so here is my updated code:
if let ratingDic = dictionary["rating"] as? [String: Any],
//let ratingId = ratingDic["id"] {
let ratingId = [ratingDic.valueForKey("id")!] {
searchResult.ratingID = ratingId as! Number
}
However now I receive the "Value for type String:Any has no member "valueForKey"
Never mind, I was forgetting to change the actual variable to a "Double" or number
var ratingID = 0.0
instead of
var ratingID = ""
and the code now reads
if let ratingDic = dictionary["rating"] as? [String: Any],
let ratingId = ratingDic["id"] {
searchResult.ratingID = ratingId as! Double
}
I am running the following code:
var inventario = PFQuery(className:"InventarioObjetos")
inventario.getObjectInBackgroundWithId(toPassID) {
(inventario: PFObject?, error: NSError?) -> Void in
if error != nil {
NSLog("%#", error!)
} else {
inventario["Categoria"] = self.nuevoCategoria.text
inventario["Descripcion"] = self.nuevoDescripcion.text
inventario["Tamano"] = self.tamano.text
// Guarda la fecha de entrada
let dateStringFormatter = NSDateFormatter()
dateStringFormatter.dateFormat = "dd-MM-yyyy"
dateStringFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX")
let d = dateStringFormatter.dateFromString(self.nuevoFechaDeEntrada.text)
inventario["FechaDeEntrada"] = d
}
}
And on the inventario["Tamano"] = self.tamano.text line, I get this error:
Cannot assign a value of type 'String!' to a value of type 'AnyObject?'
Just cast self.tamano.text to an AnyObject: inventario["Tamano"] = self.tamano.text as! AnyObject
try this:
inventario["Tamano"] = self.tamano.text? (as! AnyObject?) shouldn't need this
Actually I would add the "?" in all your conversions just in case the user left one empty or a check like
if let strTamano = self.tamano.text{
inventario["Tamano"] = strTamano
} else { println("error converting tamano") }
of course the println would popup a dialog or do something more useful to the final user.
this question is similar to Replace occurrences of NSNull in nested NSDictionary
In swift I am getting an error (I believe because of NSNull's) I don't really care if the NSNull becomes an empty string or a nil. I am just wanting to get the code to work.
I have a large data structure coming in from JSON as an NSDictionary. Then I am saving that to a temporary file. Here is the code:
var jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: .MutableContainers, error: &err) as! NSDictionary
let json = JSON(jsonResult)
if (json["errors"].array?.count > 0) {
println("could not load stuff")
} else {
println("retrieving the stuff")
let file = "file.txt"
let file_path = NSTemporaryDirectory() + file
let dict:NSDictionary = jsonResult
let readDict:NSDictionary? = NSDictionary(contentsOfFile: file_path)
if dict.writeToFile(file_path, atomically: true) {
let readDict:NSDictionary? = NSDictionary(contentsOfFile: file_path)
//--- need to handle the NSNull junk here
if let dict = readDict {
println("Temp file created, here are the contents: \(dict)")
} else {
println("!!!Failed to READ the dictionary data back from disk.")
}
}
else {
println("!!!Failed to WRITE the dictionary to disk.")
}
}
Here's an example of what jsonResult looks like
things = (
{
"one" = one;
two = "<null>";
"three" = three;
"four" = "<null>";
"five" = five;
"six" = "six-6";
seven = 7;
eight = eight;
nine = "<null>";
ten = "<null>";
eleven = "<null>";
"twelve" = "<null>";
},
UPDATE:
Problem: I have a very large amount of JSON (roughly 600kb as text) Within that JSON data there are nulls. The problem I was having is that when you NSJSONSerialization as NSDictionary, it converts the nulls into NSNull objects (it looks funky if you print this out because they appear as a string, this is wrong.
Solution: You need to have a "pruned" or "sanitized" dictionary. What this means is to throw out the key and value entirely. To do this, I added a sanitized_dict function. Here is the function:
func sanitize_dict(obj: AnyObject) -> AnyObject {
if obj.isKindOfClass(NSDictionary) {
var saveableObject = obj as! NSMutableDictionary
for (key, value) in obj as! NSDictionary {
if (value.isKindOfClass(NSNull)) {
//println("Removing NSNull for: \(key)")
saveableObject.removeObjectForKey(key)
}
if (value.isKindOfClass(NSArray)) {
let tmpArray: (AnyObject) = sanitize_dict(value as! NSArray)
saveableObject.setValue(tmpArray, forKey: key as! String)
}
if (value.isKindOfClass(NSDictionary)) {
let tmpDict: (AnyObject) = sanitize_dict(value as! NSDictionary)
saveableObject.setValue(tmpDict, forKey: key as! String)
}
}
return saveableObject
//--- because arrays are handled differently,
//--- you basically need to do the same thing, but for an array
//--- if the object is an array
} else if obj.isKindOfClass(NSArray) {
var saveableObject = [AnyObject]()
for (index, ele) in enumerate(obj as! NSArray) {
if (ele.isKindOfClass(NSNull)) {
// simply don't add element to saveableobject and we're good
}
if (ele.isKindOfClass(NSArray)) {
let tmpArray: (AnyObject) = sanitize_dict(ele as! NSArray)
saveableObject.append(tmpArray)
}
if (ele.isKindOfClass(NSDictionary)) {
let tmpDict: (AnyObject) = sanitize_dict(ele as! NSDictionary)
saveableObject.append(tmpDict)
}
}
return saveableObject
}
// this shouldn't happen, but makes code work
var saveableObject = [AnyObject]()
return saveableObject
}
So your other code needs to call that function, it should look something like this:
var err: NSError?
var jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: .MutableContainers, error: &err) as! NSDictionary
//--- right now jsonResult is not actual json, and actually has the NSNulls
//--- get that result into the sanitized function above
let saveableDict: (AnyObject) = self.sanitize_dict(jsonResult)
let json = JSON(saveableDict)
if (json["errors"].array?.count > 0) {
println("!!!Failed to load.")
} else {
println("Load json successful. Attempting to save file...")
//--- set up basic structure for reading/writing temp file
let file = "file.txt"
let file_path = NSTemporaryDirectory() + file
let dict:NSDictionary = jsonResult
let readDict:NSDictionary? = NSDictionary(contentsOfFile: file_path)
if dict.writeToFile(file_path, atomically: true) {
let readDict:NSDictionary? = NSDictionary(contentsOfFile: file_path)
if let dict = readDict {
println("Temp file created, here are the contents: \(dict)")
} else {
println("!!!Failed to READ the dictionary data back from disk.")
}
}
else {
println("!!!Failed to WRITE the dictionary to disk.")
}
}
Hope this helps somebody out there with a big JSON dataset and nulls. It is all about that sanitize function!