ioscore-datansfetchrequestxcdatamodel

Access FetchRequest from xcdatamodel in iOS

I'm using NSPersistentContainer to access my core data in iOS10 app and Xcode 8. Similar to Entity, I added a "UserFetchRequest" in my Coredata xcdatamodel. Below is the screen shot.

Screen Shot

How can I access the "UserFetchRequest" in the code?

Solution

  • Having given your fetch request a name in the Data Model Inspector on the right hand side:

    Data Model Editor

    (in my case named "randomFetch" where yours is "UserFetchRequest"), get the model from the persistentContainer:

    let model = persistentContainer.managedObjectModel

    and then access the fetch request using the fetchRequestTemplate(forName:) method:

    let fetchRequest = model.fetchRequestTemplate(forName: "randomFetch") as! NSFetchRequest<Event>

    You can then execute this fetch request as normal.