How to find the changes of associated model's record?

Question

I have two model like below,

orders table attributes:

#  order_cost          :float
#  order_number        :string(255)

order_items table attributes:

#  order_id      :integer
#  price         :float
#  qty           :integer
#  name          :string

Association: "Order has_many Order_items"

I want to find out any changes made in order_items from order.

Consider "Order 1" has "4 order_items". In that, 2nd order_item.name is changed & 3rd order_item.qty changed.

Now my question, How to find Order 1 associated record changes?

Answer 1

Maybe this answer would help. link

Apart from this I think there is no direct path to monitor changes of an association.

Answer 2

From what I understand, you want a record of the changes that took in your database. If so, there's a gem called paper_trail that can help you with this.

https://github.com/airblade/paper_trail

Answer 3

ActiveModel::Dirty is what you are looking for.