ruby on rails - How to get model with relation as hash? -

i want hash representation of post model posts's related comments included array of hashes.

my models:

class post < activerecord::base   has_many :comments end  class comment < activerecord::base   belongs_to :post end

so output should this:

{   "id": 3,   "body": "this post",   "comments": [     {       "id": 1,       "post_id": 3,       "body": "this comment",     }   ] }

things have tried (that return post, not related comments:

post.includes(:comments).as_json post.eager_load(:comments).as_json

you can try following:

post.as_json(include: :comments)

Szoka