magicalrecord

I'm writing an application and I am using MagicalRecord as a framework for interacting with Core Data. The application fetches an array of posters from a server and then displays them. Posters can also be created on the app and then uploaded to the server if the user requires it. So posters created by the user are stored in the local db using Core Data, while posters fetched from the server should only be displayed in the app but not saved locally. How can I use the same Poster class (which now is a subclass of NSManagedObject) to handle both these cases? Here is my class: @interface Poster :

I am making a method that will remove all of my NSManagedObjects that were not updated in the last sync. - (void)removeStaleObjects { // Delete objects that have not been updated in this sync. NSPredicate *stalePredicate = [NSPredicate predicateWithFormat:@"updated < %@", self.syncStart]; NSArray *staleObjects = [Node MR_findAllWithPredicate:stalePredicate]; for (Node *n in staleObjects) { [[NSManagedObjectContext MR_defaultContext] deleteObject:n]; } } The code keeps failing on the MR_findAll... line with [__NSDate objCType]: unrecognized selector sent to instance I have checked my syntax

简介 项目主页: https://github.com/magicalpanda/MagicalRecord 实例下载: https://github.com/ios122/MagicalRecord 在软件工程中,活动记录模式是一种用于在关系数据库中存储数据的设计模式.这种设计模式最早由Martin Fowler在他的 Patterns of Enterprise Application Architecture 一书中命名.这样的一个对象的,接口应该包含插入,更新和删除的方法;再加上与底层数据库几乎直接对应的的属性. 活动记录是一种访问数据库中数据的方式.一个数据库的表或者试图被装箱进一个类中;因此,一个对象实例对应表中的一行数据.在创建对象之后,会往表中添加新的一行以保存数据.加载对象时,从数据库中获取信息;当对象更新时,表中对应的行也会被更新.装箱类实现存取方法和分别对应表或视图中每一列的属性. - Wikipedia MagicalRecord 受Ruby on Rails活动记录获取方式的便利性影响.项目目标是: 清理我的Core Data相关代码 支持清晰,简单,一行代码式的查询 当需要优化请求时,仍然可以修改 NSFetchRequest. 使用 CocoaPods 安装 把下面一行添加到 Podfile : pod "MagicalRecord" 在工程目录执行:

I need to save my array to Core Data. let array = [8, 17.7, 18, 21, 0, 0, 34] The values inside that array, and the number of values are variable. 1. What do I declare inside my NSManagedObject class? class PBOStatistics: NSManagedObject, Equatable { @NSManaged var date: NSDate @NSManaged var average: NSNumber @NSManaged var historicAverage: NSNumber @NSManaged var total: NSNumber @NSManaged var historicTotal: NSNumber @NSManaged var ordersCount: NSNumber @NSManaged var historicOrdersCount: NSNumber @NSManaged var values: [Double] //is it ok? @NSManaged var location: PBOLocation } 2. What do I