I am getting the following error while saving data to CoreData. I made this project completely simple for you to review my project. There is Local json in the project. You can download and test my project.
Project GitLab Link: Core Data Test Project
2021-08-20 23:15:33.153215+0300 CoreDataTest[29156:2365912] [error] warning: Multiple NSEntityDescriptions claim the NSManagedObject subclass 'QuestionCD' so +entity is unable to disambiguate.
CoreData: warning: Multiple NSEntityDescriptions claim the NSManagedObject subclass 'QuestionCD' so +entity is unable to disambiguate.
2021-08-20 23:15:33.153422+0300 CoreDataTest[29156:2365912] [error] warning: 'QuestionCD' (0x282ef02c0) from NSManagedObjectModel (0x283ad45f0) claims 'QuestionCD'.
.......
Failed to save selected category: A Core Data error occurred.
Source Editor Functionality Is Limited Error (What is this ? / Why ?):
Core Data Entities:
Core Data Save Function:
func saveSelectedQuestion(questionTitle: String, id: String, questions: [QuestionList]) {
let questionsCD = QuestionCD(context: persistentContainer.viewContext)
questionsCD.title = questionTitle
questionsCD.id = id
questionsCD.questions = questions
do {
try persistentContainer.viewContext.save()
} catch {
print("Failed to save selected category: \(error.localizedDescription)")
}
}
Model:
class QuestionContainer: NSObject, Codable {
var questionCategories: [Question]
init(questionCategories: [Question]) {
self.questionCategories = questionCategories
}
}
class Question: NSObject, Codable {
var title: String
var id: String
var questions: [QuestionList]
init(title: String, id: String, questions: [QuestionList]) {
self.title = title
self.id = id
self.questions = questions
}
}
public class QuestionList: NSObject, Codable {
init(id: String, question: String, isQuestionImage: Bool, isSectionImage: Bool, imageURL: String, imageData: Data? = nil, sections: Sections, selected: String, correct: String) {
self.id = id
self.question = question
self.isQuestionImage = isQuestionImage
self.isSectionImage = isSectionImage
self.imageURL = imageURL
self.imageData = imageData
self.sections = sections
self.selected = selected
self.correct = correct
}
var id: String
var question: String
var isQuestionImage, isSectionImage: Bool
var imageURL: String
var imageData: Data?
var sections: Sections
var selected: String
var correct: String
}
public class Sections: NSObject, Codable {
init(a: String, b: String, c: String, d: String) {
self.a = a
self.b = b
self.c = c
self.d = d
}
var a, b, c, d: String
private enum CodingKeys: String, CodingKey {
case a = "A"
case b = "B"
case c = "C"
case d = "D"
}
}
Page Where I Save Data:
I am saving data from this page.
struct QuestionCategoryCellView: View {
@ObservedObject var questionCategoryCellViewModel = QuestionCategoryCellViewModel()
var questionTitle: String
var questionID: String
@Binding var questions: [QuestionList]
var body: some View {
Button(action: {
print("title: \(questionTitle)")
if questionCategoryCellViewModel.searchCategoryInCoreData(id: questionID) {
print("already saved")
} else {
questionCategoryCellViewModel.saveSelectedQuestionsToCoreData(questionTitle: questionTitle, id: questionID, questions: questions)
}
}) {
Text(questionTitle)
}
}
}
