Code Quality Rank: L5
Programming language: Swift
License: MIT License
Tags: Core Data    
Latest version: v4.1.2

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Swift 4.2 Platforms iOS | watchOS | tvOS | macOS CocoaPods Carthage Swift Package Manager License MIT

⚠️ Since this repository is going to be archived soon, I suggest migrating to NSPersistentContainer instead (available since iOS 10). For other convenience helpers, beside managing stack, I'm currently just using this.


Super awesome Swift minion for Core Data (iOS, macOS, tvOS)

I made this for personal use, but feel free to use it or contribute. For more examples check out [Sources](Sources) and [Tests](Tests).



AECoreDataUI was previously part of AERecord, so you may want to check that also.

Why do we need yet another one Core Data wrapper? You tell me!
Inspired by many different (spoiler alert) magical solutions, I wanted something which combines complexity and functionality just about right. All that boilerplate code for setting up of Core Data stack, passing the right NSManagedObjectContext all accross the project and different threads, not to mention that boring NSFetchRequest boilerplates for any kind of creating or querying the data - should be more simple with this.


  • Create default or custom Core Data stack (or more stacks) easily accessible from everywhere
  • Have main and background contexts, always in sync, but don't worry about it
  • CRUD data in many ways with generic one liners
  • iCloud support
  • Covered with unit tests
  • Covered with inline docs


You may see this demo project for example.

Create Core Data stack

Almost everything in AERecord is made with 'optional' parameters (which have default values if you don't specify anything).
So you can load (create if doesn't already exist) CoreData stack like this:

do {
    try AERecord.loadCoreDataStack()
} catch {

or like this:

let myModel: NSManagedObjectModel = AERecord.modelFromBundle(for: MyClass.self)
let myStoreType = NSInMemoryStoreType
let myConfiguration = ...
let myStoreURL = AERecord.storeURL(for: "MyName")
let myOptions = [NSMigratePersistentStoresAutomaticallyOption : true]
do {
    try AERecord.loadCoreDataStack(managedObjectModel: myModel, storeType: myStoreType, configuration: myConfiguration, storeURL: myStoreURL, options: myOptions)
} catch {

or any combination of these.

If for any reason you want to completely remove your stack and start over (separate demo data stack for example) you can do it as simple as this:

do {
    try AERecord.destroyCoreDataStack() // destroy default stack
} catch {

do {
    let demoStoreURL = AERecord.storeURL(for: "Demo")
    try AERecord.destroyCoreDataStack(storeURL: demoStoreURL) // destroy custom stack
} catch {

Similarly you can delete all data from all entities (without messing with the stack) like this:


Context operations

Context for current thread (Context.default) is used if you don't specify any (all examples below are using Context.default).

// get context
AERecord.Context.main // get NSManagedObjectContext for main thread
AERecord.Context.background // get NSManagedObjectContext for background thread
AERecord.Context.default // get NSManagedObjectContext for current thread

// execute NSFetchRequest
let request = ...
let managedObjects = AERecord.execute(fetchRequest: request) // returns array of objects

// save context
AERecord.save() // save default context
AERecord.saveAndWait() // save default context and wait for save to finish

// turn managed objects into faults (you don't need this often, but sometimes you do)
let objectIDs = ...
AERecord.refreshObjects(with: [objectIDs], mergeChanges: true) // turn objects for given IDs into faults
AERecord.refreshRegisteredObjects(mergeChanges: true) // turn all registered objects into faults

Easy Queries

Easy querying helpers are created as NSManagedObject extension.
All queries are called on generic NSManagedObject, and Context.default is used if you don't specify any (all examples below are using Context.default). All finders have optional parameter for NSSortDescriptor which is not used in these examples. For even more examples check out unit tests.


If you need custom NSFetchRequest, you can use createPredicate(with:) and createFetchRequest(predicate:sortdDescriptors:), tweak it as you wish and execute with AERecord.

// create request for any entity type
let attributes = ...
let predicate = NSManagedObject.createPredicate(with: attributes)
let sortDescriptors = ...
let request = NSManagedObject.createFetchRequest(predicate: predicate, sortDescriptors: sortDescriptors)

// set some custom request properties
request.someProperty = someValue

// execute request and get array of entity objects
let managedObjects = AERecord.execute(fetchRequest: request)

Of course, all of the often needed requests for creating, finding, counting or deleting entities are already there, so just keep reading.


NSManagedObject.create() // create new object

let attributes = ...
NSManagedObject.create(with: attributes) // create new object and sets it's attributes

NSManagedObject.firstOrCreate(with: "city", value: "Belgrade") // get existing object (or create new if it doesn't already exist) with given attribute

let attributes = ...
NSManagedObject.firstOrCreate(with: attributes) // get existing object (or create new if it doesn't already exist) with given attributes

Find first

NSManagedObject.first() // get first object

let predicate = ...
NSManagedObject.first(with: predicate) // get first object with predicate

NSManagedObject.first(with: "bike", value: "KTM") // get first object with given attribute name and value

let attributes = ...
NSManagedObject.first(with: attributes) // get first object with given attributes

NSManagedObject.first(orderedBy: "speed", ascending: false) // get first object ordered by given attribute name

Find all

NSManagedObject.all() // get all objects

let predicate = ...
NSManagedObject.all(with: predicate) // get all objects with predicate

NSManagedObject.all(with: "year", value: 1984) // get all objects with given attribute name and value

let attributes = ...
NSManagedObject.all(with: attributes) // get all objects with given attributes


let managedObject = ...
managedObject.delete() // delete object (call on instance)

NSManagedObject.deleteAll() // delete all objects

NSManagedObject.deleteAll(with: "fat", value: true) // delete all objects with given attribute name and value

let attributes = ...
NSManagedObject.deleteAll(with: attributes) // delete all objects with given attributes

let predicate = ...
NSManagedObject.deleteAll(with: predicate) // delete all objects with given predicate


NSManagedObject.count() // count all objects

let predicate = ...
NSManagedObject.count(with: predicate) // count all objects with predicate

NSManagedObject.count(with: "selected", value: true) // count all objects with given attribute name and value

let attributes = ...
NSManagedObject.count(with: attributes) // count all objects with given attributes


do {
    try NSManagedObject.distinctValues(for: "city") // get array of all distinct values for given attribute name
} catch {

do {
    let attributes = ["country", "city"]
    try NSManagedObject.distinctRecords(for: attributes) // get dictionary with name and values of all distinct records for multiple given attributes
} catch {

Auto Increment

If you need to have auto incremented attribute, just create one with Int type and get next ID like this:

NSManagedObject.autoIncrementedInteger(for: "myCustomAutoID") // returns next ID for given attribute of Integer type

Turn managed object into fault

NSFetchedResultsController is designed to watch only one entity at a time, but when there is a bit more complex UI (ex. showing data from related entities too), you sometimes have to manually refresh this related data, which can be done by turning 'watched' entity object into fault. This is shortcut for doing just that (mergeChanges parameter defaults to true). You can read more about turning objects into faults in Core Data documentation.

let managedObject = ...
managedObject.refresh() // turns instance of managed object into fault

Batch update

Batch updating is the 'new' feature from iOS 8. It's doing stuff directly in persistent store, so be carefull with this and read the docs first. Btw, NSPredicate is also optional parameter here.

NSManagedObject.batchUpdate(properties: ["timeStamp" : NSDate()]) // returns NSBatchUpdateResult?

NSManagedObject.objectsCountForBatchUpdate(properties: ["timeStamp" : NSDate()]) // returns count of updated objects

NSManagedObject.batchUpdateAndRefreshObjects(properties: ["timeStamp" : NSDate()]) // turns updated objects into faults after updating them in persistent store



AERecord is released under the MIT license. See [LICENSE](LICENSE) for details.

*Note that all licence references and agreements mentioned in the AERecord README section above are relevant to that project's source code only.