Something like this… (not tested)
defp tags_json(tags) do
tags |> Enum.map(&tag_json(&1))
end
defp tag_json(tag) do
%{id: tag.id, name: tag.name}
end
BTW If You are not really modifying the output, You can also use Map.from_struct
Like so
tag |> Map.from_struct
Thanks for your reply.
Actually the user_json function itself not working. I can not get the separate the id and name
defmodule VampDev.UserView do
use VampDev.Web, :view
def render("index.json", %{user: user}) do
user_json(user)
end
defp user_json(user) do
%{id: user.id, name: user.name}
end
end
Reading your code I see that user is also a collection, it is a list of users…
As seen here…
VampDev.User
|> Repo.all()
So proceed the same, with a users_json…
In your controller
def index(conn, _params) do
users =
VampDev.User
|> Repo.all()
|> Repo.preload(:tags)
render conn, users: users
end
In your view
def render("index.json", %{users: users}) do
%{users: users_json(users)}
end
defp users_json(users) do
users |> Enum.map(&user_json(&1))
end
defp user_json(user) do
%{id: user.id, name: user.name}
end
In the index action of a resource controller, You expect to receive a collection of users. It is in the show action You get only one user.
