One to Many Relationships not supported

[fstigre]

First of all, let me thank you all for the awesome framework, I can't believe how easy it is to sync data with IceCream it is really like magic.

I currently have a project where I'm using a One-to- many relationships in Realm using the List method let dogs = List<Dog>() but I tried it and IceCream does not create the right relationship in CloudKit dashboard.

Can someone please confirm that let dogs = List<Dog>() is not supported in IceCream and that the only option would be using the LinkingObject option, let dogs = LinkingObjects(fromType: Dog.self, property: "owner")?

Thanks a lot!

[caiyue1993]

Yes, I can confirm that. We're still working on the support of List data structure.

[fstigre]

Thank you for the confirmation. Keep up the good work, IceCream it's awesome!

[fstigre]

One last question, Is the LinkingObjects recommended for One to Many relationships? Has anyone done it?

[caiyue1993]

Yes, as it said in the README file:

Thanks to the CKReference in the CloudKit, IceCream has supported many-to-one relationship nicely. As the Dog example shows, a dog may have an owner. And we'll wrap the owner up as CKReference and push them to the CloudKit.
Inversely, the Person object has a dogs property which is the type of LinkingObjects. So we've successfully supported to-many relationship with a nice workaround. All make sense.

[fstigre]

@caiyue1993 The README file only mentions the Many-to-One relationship but nothing about One-to-Many. Is the LinkingObjects recommended for both, the Many-to-One and One-to-Many relationships?

[caiyue1993]

Let me clarify this. The List structure is still not supported in IceCream and you can only use type LinkingObjects to implement to-many relationship as a workaround. If you are only using many-to-one(for example, Dog has an owner property which is Person type), you don't need to use LinkingObjects at all.
You can give it a try :)

[fstigre]

Again, I'm using One-to-Many NOT Many-to-One. Any idea when List will be supported? The library it's awesome but the List is a must for me. I'm definitely willing to donate to get that feature and I'm sure a lot more people would donate too.

[caiyue1993]

I'm currently spending my leisure time working on this feature. It makes sense and you could try looking at the #206 in advance.

[caiyue1993]

Hi @fstigre,
I don't know whether you are still sticking around, but I'd like to say that the issue that you described has been fixed in the #206. I'm sorry for the delay and thanks for the donation that you appealed in another ticket.

Please refer to the README for the detailed usage. Just let me know if you encounter other issues. Thank you again.