undefined method `updated?' for HasOneAssociation , for nested attributes in Rails 4

has-one, nested-attributes, ruby-on-rails

Solution

EDIT

Actually, I had defined the relation twice in my case, once as `belongs_to`, once as `has_one_through`. Long day :) Arthur's answer should be the accepted one!

Previous answer:

Just had the same problem and worked it out. I had this:

    has_one :organization, through: :event

I switched it to this: 

    has_one: organization, through: :event, autosave: false

I think it might be an ActiveRecord bug.

Autosave calls `updated?` on associations, which is defined for `belongs_to`, but not for `has_one` (or `has_one_through`).

Problem

so my problem is like: https://gist.github.com/panSarin/4a221a0923927115584a when i save this form i get error like in title ``` NoMethodError (undefined method `updated?' for #ActiveRecord::Associations::HasOneAssociation:0x00000008fcacf8>): ``` I checked without polymorphic association - and it`s the same. When the parent model (BusinessClient in that case) have `belongs_to` then it works fine. But i can't belive that i can't have architecture that children keeps `parent_id` . Any idea what should i change to make it works ?

Original source