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Coredata in swift

Murad_9288 answered on August 24, 2024 Popularity 3/10 Helpfulness 8/10

answer Coredata in swift

Coredata in swift

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//
//  CoreDataManager.swift
//
//  Created by Md Murad Hossain on 25/08/2024.
//  Email: muradhossainm01@gmail.com
//

import Foundation
import UIKit
import CoreData

class CoreDataManager {
    static let shared = CoreDataManager()
    
    private lazy var persistentContainer: NSPersistentContainer = {
        let container = NSPersistentContainer(name: "ChatData")
        container.loadPersistentStores(completionHandler: { (_, error) in
            if let error = error as NSError? {
                fatalError("Unresolved error \(error), \(error.userInfo)")
            }
        })
        return container
    }()
    
    private var context: NSManagedObjectContext {
        return persistentContainer.viewContext
    }
    
    
    // Create and Save Data
    func saveCoreData(_ imageData: Data?,
                       date: Date,
                       prompt: String) {
        
        let newItem = ChatData(context: context)
        newItem.image = imageData
        newItem.date = date
        newItem.prompt = prompt
        saveContext()
    }
    
    
    // Fetch Data
    func fetchAllItems() -> [ChatData] {
        let fetchRequest: NSFetchRequest<ChatData> = ChatData.fetchRequest()
        let sort = NSSortDescriptor(key: #keyPath(ChatData.date), ascending: false)
        fetchRequest.sortDescriptors = [sort]
        
        do {
            return try context.fetch(fetchRequest)
        } catch {
            print("Error fetching data: \(error)")
            return []
        }
    }
    
    
    // Edit Data
    func editItem(_ item: ChatData, newPrompt: String, date: Date, image: Data) {
        item.prompt = newPrompt
        item.date = date
        item.image = image
        saveContext()
    }
    
    
    // Delete Data
    func deleteItem(_ item: ChatData) {
        context.delete(item)
        saveContext()
    }
    
    
    // Save Changes
    private func saveContext() {
        if context.hasChanges {
            do {
                try context.save()
            } catch {
                print("Error saving context: \(error)")
            }
        }
    }
}




//  ChatData+CoreDataProperties.swift
import Foundation
import CoreData


extension ChatData {

    @nonobjc public class func fetchRequest() -> NSFetchRequest<ChatData> {
        return NSFetchRequest<ChatData>(entityName: "ChatData")
    }

    @NSManaged public var date: Date?
    @NSManaged public var image: Data?
    @NSManaged public var prompt: String?

}

extension ChatData : Identifiable {

}



//  ChatData+CoreDataClass.swift

import Foundation
import CoreData

@objc(ChatData)
public class ChatData: NSManagedObject {

}

Popularity 3/10 Helpfulness 8/10 Language swift

Source: Grepper

Tags: core-data ios swift

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Contributed on Aug 24 2024

Murad_9288

0 Answers Avg Quality 2/10

Coredata in swift

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