How to return data from different entities in one request?

Question

Ruby on Rails

Hello! I want to build an application, for example, twitter. It should work like this:
1. The base template is loaded.
2. We send an Ajax request (for example, to get /user/{username})
3. We get a json response with all tweets, tags, information about the user, etc. 4. And on the front end, this whole thing will be sorted out by
AngularJs
volume: how to give away all the data so gracefully at once? I am new to rails. In php I did something like this:

//Метод Контроллера для роута get /user/{current_user}
public function($current_user) {
  $tags = new Tags();
  $user = new User();
  $profile = [
      "tags" => $tags->get_tag($current_user)
      "profile_info" => $user->get_info($current_user) 
      ....
  ] 
  return json_encode($profile)
}

Can this be done more elegantly in rails, or is the principle the same? If not difficult, then with code examples. Thank you!

Answer 1

If I understand correctly, then:
User model:
has_many :tags
Tag model:
belongs_to :user

@user = User.find(params[:user_id])
render json: {
  tags: @user.tags,
  profile_info: @user
}