How to connect 3 Ruby on Rails models?

Question

Ruby on Rails

user.rb: has_many :comments
post.rb: has_many :comments
comment.rb:

belongs_to :post
belongs_to :user

Regular comments.
How can I add?
Added without users so: @comment = @post.comments.create(comment_params)
In the table comments user and post:references are registered. It remains only to write a line. Help me please.
And by the way, is it possible to write belongs_to: :post, :user?

Answer 1

createcreates an object from the passed parameters and saves it immediately, so adding later
and not saving will not happen.
Instead create, use buildand save by
hand

@comment = @post.comments.build(comment_params)
@comment.user = current_user
@comment.save

Answer 2

>And by the way, is it possible to write belongs_to: :post, :user
No
In your case, use has_many, through ( documentation )

Answer 3

@comment = @post.comments.create(comment_params)
@comment.user = current_user

Answer 4

> And by the way, is it possible to write belongs_to: :post, :user
There are polymorphic relationships for this