Polymorphic and Inverse_Of

Hello everyone,

Rails documentation mentions that ‘inverse_of’ associations don’t work
with
polymorphic associations. I searched quite a bit online but couldn’t
find a
good reasoning for why that is the case?

My use-case for using inverse_of is to be able to have nested models.
And
the (child) model that I nested, was supposed to be the polymorphic
model.
For example,

BOOK
has_many :pages,
-> { order(position: :asc) },
inverse_of: :book

accepts_nested_attributes_for :pages

PAGE
belongs_to :post, inverse_of: :content_sections
validates :post, presence: true

Now I am going to have other models like Documents, Journals,
Photo-Albums
all of whom need to have *Pages. *This seemed to be a perfect case to
make
a polymorphic relationship between Page and all these other models using
Pageable.

In such a case, I would like to understand why rails polymorphism
doesn’t
play well with inverse_of, and if there are any other solutions to solve
my
use-case? Should I go ahead and make my own version of rails
polymorphism
for this use-case?

Thank you!

*. *

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