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daniloc/EntityIterator.swift

Last active May 7, 2021 20:54
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  1. daniloc revised this gist Aug 28, 2020. No changes.
  2. daniloc revised this gist Aug 28, 2020. No changes.
  3. daniloc revised this gist Aug 28, 2020. No changes.
  4. daniloc revised this gist Aug 28, 2020. No changes.
  5. daniloc revised this gist Aug 28, 2020. No changes.
  6. daniloc created this gist Aug 28, 2020.
    24 changes: 24 additions & 0 deletions EntityIterator.swift
    View file
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    //adapted via: https://www.hackingwithswift.com/books/ios-swiftui/dynamically-filtering-fetchrequest-with-swiftui

    import SwiftUI
    import CoreData

    struct EntityIterator<Entity: NSManagedObject, Content: View>: View {

    var fetchRequest: FetchRequest<Entity>
    var results: FetchedResults<Entity> { fetchRequest.wrappedValue }

    let content: (Entity) -> Content

    var body: some View {
    ForEach(fetchRequest.wrappedValue, id: \.self) { result in
    self.content(result)
    }
    }

    init(predicate: NSPredicate, sortDescriptors: [NSSortDescriptor], @ViewBuilder content: @escaping (Entity) -> Content) {
    fetchRequest = FetchRequest<Entity>(entity: Entity.entity(), sortDescriptors: sortDescriptors, predicate: predicate)

    self.content = content
    }
    }