Rails, how to specify which fields to output in a controller's JSON response?

Question

in my controller I currently have:

invite = Invite.find_by_token(params[:id])
user = invite.user

json_response({
  user: user
})

def json_response(object, status = :ok)
  render json: object, status: status
end

Right now, user is returning all user fields. I want to return just (id, email)... I've tried:

user = invite.user.select(:id, :email)
user = invite.user.pluck(:id, :email)

neither works. Ideas?

Answer 1

You can use the method as_json passing attributes you want in the response, like:

user.as_json(only: [:id, :email])