Core Data Entity Relationship like Array inside Entity?

Question

So I am making a todo like app. Now I have made the app I want to add a functionality where each task can have subtasks like:

Task: Book Report Sub Tasks: - Get Information - Summarise and Print information - Stick information to paper

To clarify I kind of want the core data entity to function as if it were an array.

Now I tried attempting this myself and I did it but what happened was that the when I would add a task and delete the task, the subtasks would still be there.

I am really confused on how I need to setup my entity. Any help is appreciated! Thanks!

Hope this might help stackoverflow.com/questions/8280777/… — Viraj
– Viraj, Commented Nov 15, 2012 at 6:08

Chris McCall · Accepted Answer · 2012-11-15 20:59:10Z

1

You need to create a to-many relationship to another entity and a reciprocal "Inverse" relationship in the child entity.

Check this out:

http://timroadley.com/2012/02/19/core-data-basics-part-4-relationships/

Inverse relationships must be created in the model editor:

enter image description here

edited Nov 15, 2012 at 20:59

answered Nov 15, 2012 at 6:11

Chris McCall

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2 Comments

iDeveloper Over a year ago

Thanks for your response, I have successfully created a to-many relationship in my project but I did not get what you meant by 'a reciprocal relationship in the child entity.'

Marcio Granzotto Over a year ago

The link is dead. That's why you should not use external links

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