CODEWITHSUNDEEP
iosswiftrealm
John Fda
John Fda

Reputation: 327

Using Realm With Existing Class?

Generic question about integrating Realm with an existing project. Another framework I have has a User class which has a bunch of properties. Is there anyway with Realm that I can just store this object without creating an entire new Realm model and copying over the values from the User's properties to the new Realm model?

Can I do something like this?

class RealmUser: Object {
    dynamic user: User?
}

Even though user isn't a Realm defined model.

Thanks.

Upvotes: 1

Views: 1013

Answers (1)

joern
joern

Reputation: 27620

Realm only supports the following property types: Bool, Int8, Int16, Int32, Int64, Double, Float, String, NSDate, and NSData.

So you cannot simply add your User object to a Realm. If your User class implements NSCoding you could convert the User object to a NSData object and store that, but you would lose the ability to query User's properties so IMHO that is not a practical option.

If you really want to use Realm I think there is no other way but to create a RealmUser object with all the properties from the User class. You can add a convenience initializer that makes the creation of RealmUser objects easier in other parts of your code base:

class RealmUser: Object {
   dynamic var userId = 0
   dynamic var name = ""
   ...

   convenience init(withUser user: User) {
        self.init()
        userId = user.id
        name = user.name
        ...
   }
}

This is not as short and practical as your solution would be, but adding custom classes to Realm is just not possible.

Upvotes: 2

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