magicalrecord

Cannot retrieve temporary object in child context with existingObjectWithID:error:

由 筅森魡賤 提交于 2019-12-08 07:53:36
问题 I have created an object in managed object context, which I haven't saved yet. Further I created a child context and want to modify this object in this context. To be able to modify this object I have to retrieve this temporary object in the child context. I use MagicalRecord's method MR_inContext: , which use the method existingObjectWithID:error: . But this doesn't return the object for the given temporary object ID. The method objectWithID: does seems to work. I don't understand why

How to bind NSArrayController to NSManagedObjectContext when using MagicalRecord

由 血红的双手。 提交于 2019-12-08 03:17:33
问题 Ive recently started migrating a project to MagicalRecord and cant find how i would bind it to an NSArrayController in the interface builder of XCode 4. The approach ive taken so far (besides lots of google) is making a reference to the [MagicalRecord defaultContext] and binding to that but i get an error: "Cannot perform operation without a managed object context" Any pointers in the right direction would be really appreciated. 回答1: Make sure you turn on MagicalRecord as mentioned in the

Magical Record Truncate not working after app terminate

由 南笙酒味 提交于 2019-12-08 00:53:57
问题 hey all i've code like this if ([cellValue isEqualToString:@"Logout"]) { NSManagedObjectContext *localContext = [NSManagedObjectContext MR_contextForCurrentThread]; [EUserBrief MR_truncateAllInContext:localContext]; [DownloadList MR_truncateAllInContext:localContext]; } the code i want to truncate all data on entities [EUserbrief] and [DownloadList].. the code working fine, but after app terminate and i get in , EuserBrief data and downloadlist still there,,, any solution for this? 回答1: You

Magical Record add object, different context error

由 前提是你 提交于 2019-12-07 16:48:36
问题 I'm using Magical Record in my app, and want to add the functionality for a user to add a 'Note', which is a child of 'entry'. I added this code: [MagicalRecord saveWithBlock: ^(NSManagedObjectContext *localContext) { Note *newNote = [Note MR_createInContext: localContext]; newNote.content = noteContent; newNote.name = @"User Note"; [self.entry addNotesObject: newNote]; } completion: ^(BOOL success, NSError *error) { if (error != nil) { // show alert } else if (success) { [[self tableView]

MR_SHORTHAND does not work

由 时间秒杀一切 提交于 2019-12-07 04:03:51
问题 I use MagicalRecords but by some reason MR_SHORTHAND does not work for me. I have added these lines below to Prefix.pch #define MR_SHORTHAND #import "CoreData+MagicalRecord.h" In case when app calls + createEntity method the app terminates due unrecognized selector. But if I write MR_createEntity everything works fine. Team *team = [Team MR_createEntity]; // This line works but Team *team = [Team createEntity]; // This line does not work with reason: '+[Team createEntity]: unrecognized

Can't Find iPhone Simulator's SQLite Database : Using Magical Record

由 蹲街弑〆低调 提交于 2019-12-06 16:17:49
问题 In my application's documents folder, I do not find my SQLite database Library/Application Support/iPhone Simulator/6.1/"random app id"/Documents/ ^This folder is empty MagicalRecord seems to be working, I just have no idea how to find the database. I use the following to set up Magical Record [MagicalRecord setupAutoMigratingCoreDataStack]; So where does MagicalRecord store its database? 回答1: MagicalRecord stores, by default, all data stores in the following location: {App Folder}/Library

Deleting entity in MagicalRecord is not persisting

由 一笑奈何 提交于 2019-12-06 15:48:27
I am having a strange issue with MagicalRecord. Deletes will not persist. When I delete, NSFetchedResultsControllerDelegate correctly sees that the object has been deleted. However, if I close and reopen the app, the entity reappears. The code I am using to delete the entity is: ActivityType *activityType = [_fetchedResultsController objectAtIndexPath:indexPath]; [activityType deleteInContext:[NSManagedObjectContext MR_defaultContext]]; [[NSManagedObjectContext MR_defaultContext] MR_saveToPersistentStoreAndWait]; The code I am using for setting up the NSFetchedResultsController is:

Importing with MagicalRecord + AFNetworking

由 不羁岁月 提交于 2019-12-06 15:02:59
I'm using AFNetworking and MagicalRecord (the current develop branch) and I'm trying to figure out how to import a lot of objects which are dependent on each other. Each resource/entity has multiple pages worth of downloads. I have a class managing the downloads for a given entity and saving them using MagicalDataImport (which has been amazing). I believe my issue is that the imports aren't happening on the same thread. So I think what is happening is: In one thread, EntityA is getting saved properly and propagated to the parent entity. Then in another thread, EntityB is being saved, and along

Magical Record Truncate not working after app terminate

由 孤街醉人 提交于 2019-12-06 12:15:58
hey all i've code like this if ([cellValue isEqualToString:@"Logout"]) { NSManagedObjectContext *localContext = [NSManagedObjectContext MR_contextForCurrentThread]; [EUserBrief MR_truncateAllInContext:localContext]; [DownloadList MR_truncateAllInContext:localContext]; } the code i want to truncate all data on entities [EUserbrief] and [DownloadList].. the code working fine, but after app terminate and i get in , EuserBrief data and downloadlist still there,,, any solution for this? You need to call [localContext MR_save]; Your changes will not be persisted to any data store without saving. 来源：

Importing Data using MagicalRecord

由 北战南征 提交于 2019-12-06 02:49:45
问题 I'm using MagicalRecord to import data from plist. I'm using code less import as explained in this tutorial Importing Data Made Easy. I have two entities Manufacturer and Car, they have one to many and one to one relation respectively. Plist structure This import work fine NSArray *manufacturers = ... [MagicalRecord saveWithBlock:^(NSManagedObjectContext *localContext) { [manufacturers enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) { [Manufacturer MR_importFromObject:obj
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