realm

In the context of a React Native app, using Realm locally only (so no realm object server for now). What is the difference between opening a realm using Realm.open({schema: [Car, Person]}) and creating a new Realm instance with new Realm({schema: [Car, Person]}); When should I use one or the other? Looks like Realm.open is just a callback to make sure the syncronisation is done, so only needed for synced Realms? So far this is what I found: Realm.open: According to the doc reference Realm.open means "Open a Realm asynchronously with a promise. If the Realm is synced, it will be fully

Can I connect to a remote Realm without having to login? In Swift, the only way to create a synchronizable Realm is through the syncConfiguration property of a Realm.Configuration . Is there a method for getting an anonymous User so that anyone can connect to the remote Realm? marius Can I connect to a remote Realm without having to login? No, you always need to be authenticated. Is there a method for getting an anonymous User so that anyone can connect to the remote Realm? Yes, via SyncCredentials.anonymous() . This is now possible in Realm Cloud . Here's how I am doing it in Swift: if let

I am trying to add Realm to my app written in swift. I have followed the tutorial and I can't seem to get it to work. The biggest problem is that when I try to import Realm I get No such module 'Realm' I don't know what else to try. You can see my efforts below. You can see the instructions here: http://realm.io/docs/cocoa/0.85.0/#swft I have also copied the instructions below: Due to the current lack of proper infrastructure for Swift dependency management, using Realm in your project requires the following steps: Add Realm as a submodule by opening the Terminal, cd-ing into your top-level

I would like to use Realm and Alamofire to map JSON to my database objects. Are there good tutorials out there? Realm offers built-in limited capabilities of mapping arbitrary JSON structures to RLMObjects . But there are some good third-party libraries, which could assist you with your use-case. You might want to checkout these: Realm-JSON (Objective-C), which offers a declarative, Mantle like way of defining your mapping ObjectMapper (Swift), which offers Realm and Alamofire support 来源： https://stackoverflow.com/questions/33479733/realm-map-json-to-realm-objects-with-alamofire

I'm working on an iOS app with Realm.io as the persistent store. I've just updated one of my custom RLMObject subclasses by adding a primary key. When I run the app, I get an error telling me I need to add migration steps: 'Migration is required for object type 'MY_REALM_OBJECT' due to the following errors: - Property 'property_name' has been made a primary key.' I have other migration code but can't find anything in the Realm docs on how to add a primary key to an RLMObject. Anyone know how to do this? You need to use the key "primaryKeyProperty" and set the value to the RLMObject property

Long time lurker, first time asker. I'm using Realm Cocoa (from Realm.io) in a project and am struggling to perform searches by PKs. Let's say I have an entity called RLMFoo which has a primary key called bar . I also have a list of PKs, let's say stored in an array: NSArray *primaryKeys = @[@"bar1", @"bar2", @"bar3"] Is there any way to retrieve all entities of class RLMFoo from my realm in one single query? I've tried so far: Predicate with format: [RLMFoo objectsInRealm:realm withPredicate:[NSPredicate predicateWithFormat:@"bar IN %@", primaryKeys]]; Realm's where: [RLMFoo objectsInRealm

I'm tryig to get the ítem with max id using this query realm.objects(Entity).filter("@max.id").first It's throwing an error saying that can't parse query so it seems this is not the correct way to do it. How can I write this query on Realm for Swift? Filters alone cannot do what you're after as they only consider a single top-level object at a time. Beyond that conceptual issue, there are a few issues with the code you posted: @"@max.id" is not a valid NSPredicate format string . NSPredicate format strings must be composed of comparisons between expressions, not expressions on their own.

I'm trying to pick image from device's Photo Library in method: func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) { userPhoto.image = info[UIImagePickerControllerOriginalImage] as! UIImage? userPhoto.contentMode = .scaleAspectFill userPhoto.clipsToBounds = true dismiss(animated: true, completion: nil) } and save this picture in Realm (as NSData): asset.assetImage = UIImagePNGRepresentation(userPhoto.image!)! as NSData? ... try! myRealm.write { user.assetsList.append(asset) myRealm.add(user) } After build succeeded and trying to