I have two databases in different domains. For this, I created two Repo. The first database contains only the users table, this database is used by all our applications.
In my Phoenix application I have the following relationship, for example:
user schema
many_to_many :posts, App.Post, join_through: App.PostUser
post schema
many_to_many :users, App.User, join_through: App.PostUser
post_user schema
schema "posts_users" do
belongs_to :post, App.Post
belongs_to :user, App.User
end
How can I assign users to posts using different Repo?
I tried to do the following function, but some erros ocurr.
def add_users(post_ids, user_ids \\ []) do
post= Repo.get!(Post, post_id |> AnotherRepo.preload(:users)
users = AnotherRepo.all(from u in User, where: u.id in ^user_ids)
post
|> Post.changeset(%{})
|> put_assoc(:users, users)
|> Repo.update()
end
** (Postgrex.Error) ERROR 42P01 (undefined_table) relation "posts" does not exist
query: SELECT u0."id", u0."name", u0."email", r1."id" FROM "users" AS u0 INNER JOIN "posts" AS r1 ON
r1."id" = ANY($1) INNER JOIN "posts_users" AS r2 ON r2."post_id" = r1."id" WHERE (r2."user_id" = u0."id") ORDER BY r1."id"
