How to set data to a Array with objects in Firestore

Question

What I want to do is to set all data to my array in Firestore, it would look something like this: Firestore

But what I have done gives me this error:

*** Terminating app due to uncaught exception 'FIRInvalidArgumentException', reason: 'Unsupported type: _SwiftValue'
*** First throw call stack:
(
    0   CoreFoundation                      0x000000010b8d71e6 __exceptionPreprocess + 294
    1   libobjc.A.dylib                     0x000000010af6c031 objc_exception_throw + 48
    2   test collectionview                 0x00000001092e7dda -[FSTUserDataConverter parseScalarValue:context:] + 2169
    3   test collectionview                 0x00000001092e729c -[FSTUserDataConverter parseData:context:] + 792
    4   test collectionview                 0x00000001092e735b __42-[FSTUserDataConverter parseData:context:]_block_invoke + 94
    5   CoreFoundation                      0x000000010b87ac50 __NSArrayEnumerate + 592
    6   test collectionview                 0x00000001092e7122 -[FSTUserDataConverter parseData:context:] + 414
    7   test collectionview                 0x00000001092e65e3 __46-[FSTUserDataConverter parsedSetData:options:]_block_invoke + 346
    8   libswiftCore.dylib                  0x000000010e8a0af1 _T0s26_SwiftDeferredNSDictionaryC23enumerateKeysAndObjectsySi7options_ys9UnmanagedVyyXlG_AGSpys5UInt8VGtXB5usingtFTf4dgn_n + 289
    9   libswiftCore.dylib                  0x000000010e703b11 _T0s26_SwiftDeferredNSDictionaryC23enumerateKeysAndObjectsySi7options_ys9UnmanagedVyyXlG_AGSpys5UInt8VGtXB5usingtF + 17
    10  libswiftCore.dylib                  0x000000010e7040cb _T0s26_SwiftDeferredNSDictionaryC23enumerateKeysAndObjectsySi7options_ys9UnmanagedVyyXlG_AGSpys5UInt8VGtXB5usingtFTo + 43
    11  test collectionview                 0x00000001092e6303 -[FSTUserDataConverter parsedSetData:options:] + 467
    12  test collectionview                 0x00000001092dc0aa -[FIRDocumentReference setData:options:completion:] + 147
    13  test collectionview                 0x00000001092dbf1a -[FIRDocumentReference setData:] + 92
    14  test collectionview                 0x00000001091e8f85 _T019test_collectionview25NewExerciseViewControllerC08doneWithD6ActionySo15UIBarButtonItemCF + 7845
    15  test collectionview                 0x00000001091e91cc _T019test_collectionview25NewExerciseViewControllerC08doneWithD6ActionySo15UIBarButtonItemCFTo + 60
    16  UIKit                               0x000000010c46a3e8 -[UIApplication sendAction:to:from:forEvent:] + 83
    17  UIKit                               0x000000010ce6f209 __45-[_UIButtonBarTargetAction _invoke:forEvent:]_block_invoke + 154
    18  UIKit                               0x000000010ce6f142 -[_UIButtonBarTargetAction _invoke:forEvent:] + 154
    19  UIKit                               0x000000010c46a3e8 -[UIApplication sendAction:to:from:forEvent:] + 83
    20  UIKit                               0x000000010c5e57a4 -[UIControl sendAction:to:forEvent:] + 67
    21  UIKit                               0x000000010c5e5ac1 -[UIControl _sendActionsForEvents:withEvent:] + 450
    22  UIKit                               0x000000010c5e4a09 -[UIControl touchesEnded:withEvent:] + 580
    23  UIKit                               0x000000010c4df0bf -[UIWindow _sendTouchesForEvent:] + 2729
    24  UIKit                               0x000000010c4e07c1 -[UIWindow sendEvent:] + 4086
    25  UIKit                               0x000000010c484310 -[UIApplication sendEvent:] + 352
    26  UIKit                               0x000000010cdc56af __dispatchPreprocessedEventFromEventQueue + 2796
    27  UIKit                               0x000000010cdc82c4 __handleEventQueueInternal + 5949
    28  CoreFoundation                      0x000000010b879bb1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    29  CoreFoundation                      0x000000010b85e4af __CFRunLoopDoSources0 + 271
    30  CoreFoundation                      0x000000010b85da6f __CFRunLoopRun + 1263
    31  CoreFoundation                      0x000000010b85d30b CFRunLoopRunSpecific + 635
    32  GraphicsServices                    0x000000011147aa73 GSEventRunModal + 62
    33  UIKit                               0x000000010c469057 UIApplicationMain + 159
    34  test collectionview                 0x00000001091f19a7 main + 55
    35  libdyld.dylib                       0x000000010f1c6955 start + 1
    36  ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)

I have made a model for my "exercise" like this:

import Foundation
import Firestore

protocol  DocumentSerializable {
    init?(dictionary:[String:Any])
}


struct Exercise {
    var title: String
    var language: String
    var translated: String
    var uid: String
    var userId: String
    var dueDate: Int
    var lastOpen: Int
    var words: Array<Any>
    
    var dictionary:[String:Any] {
        return [
            "title":title,
            "language":language,
            "translated":translated,
            "uid":uid,
            "userId":userId,
            "dueDate":dueDate,
            "lastOpen":lastOpen,
            "words":words
        ]
    }
}

extension Exercise : DocumentSerializable {
    init?(dictionary: [String : Any]) {
        guard let title = dictionary["title"] as? String,
            let language = dictionary["language"] as? String,
            let translated = dictionary["translated"] as? String,
            let uid = dictionary["uid"] as? String,
            let userId = dictionary["userId"] as? String,
            let dueDate = dictionary["dueDate"] as? Int,
            let lastOpen = dictionary["lastOpen"] as? Int,
            let words = dictionary["words"] as? Array<Any>
        
            else {return nil}
        
        self.init(title: title, language: language, translated: translated, uid: uid, userId: userId, dueDate: dueDate, lastOpen: lastOpen, words: words)
    }
}

and a model for the words like this:

import Foundation
import Firestore

protocol  DocumentSerializable2 {
    init?(dictionary:[String:Any])
}

struct Word {
    var translation: String
    var word: String
   
    var dictionary:[String:Any] {
        return [
            "translation":translation,
            "word":word
            
        ]
    }
}

extension Word : DocumentSerializable {
    init?(dictionary: [String : Any]) {
        guard let translation = dictionary["translation"] as? String,
            let word = dictionary["word"] as? String
            
            else {return nil}
        
        self.init(translation: translation, word: word)
    }
}

I have tried this code to set the data and it does work fine for all the data except for the words part:

let newExercise = Exercise(title: exerciseTitleTxt.text!, language: language1Txt.title(for: .normal)!, translated: language2Txt.title(for: .normal)!, uid: "test", userId: uid!, dueDate: dueDateMiliseconds, lastOpen: Date().millisecondsSince1970, words: wordsArray)

       db.collection("exercises").document("test2").setData(newExercise.dictionary)

To get the words into the "wordsArray" am I doing like this:

let word = Word(translation: translationTxt.text!, word: wordTxt.text!)
wordsArray.append(word)

So my own guess is that I need to change the way I am saving the words in the Exercise model but I can not wrap my head around how exactly I would do that.

Thanks for the help in advance!

Please edit the question to show the exact text of any errors (not just an image). The text will be easier to read and search. — Doug Stevenson
– Doug Stevenson, Commented Aug 21, 2018 at 14:58

Chris Edgington · Accepted Answer · 2018-08-21 15:12:57Z

5

This is because your words parameter is an array of Word objects - Array<Word> or [Word]. Firebase doesn't know how to serialise it. What you need to do is convert your array of Words to an array of dictionaries.

var dictionary:[String:Any] {
      return [
          ...
          "words" : words.map({$0.dictionary})
      ]
}

answered Aug 21, 2018 at 15:12

Chris Edgington

3,2955 gold badges26 silver badges43 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

How to set data to a Array with objects in Firestore

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related