Serialize JSON Association for Model Children

I am using active model serializers for my API. I have a model (Task) that has many sub-tasks (always Task model) called children. I am doing this recursive has_many association thanks to ancestor birth ( https://github.com/stefankroes/ancestry )

It works well enough, but I have this problem: The task has a user relationship, but while the active serializer models export the user for the main object, it does not display the user's details for all children. This is my serializer:

class TaskSerializer < ActiveModel::Serializer
  attributes :id, :name, :details, :user_id

  belongs_to :user
  has_many :children

end

      

        
        
        
      

    

This is my controller:

class Api::V1::TasksController < Api::V1::BaseController
  respond_to :json

  def index
    @tasks = current_user.company.tasks
    respond_with @tasks, location: nil
  end
end

      

        
        
        
      

    

And this is my model:

class Task < ActiveRecord::Base
  has_ancestry

  belongs_to :user
end

      

        
        
        
      

    

I also tried to do this in my model:

class Api::V1::TasksController < Api::V1::BaseController
  respond_to :json

  def index
    @tasks = current_user.company.tasks
    render json: @tasks,
           each_serializer: TaskSerializer,
           status: :ok

  end
end

      

        
        
        
      

    

But doesn't work ... I have user data for the parent but not the children (where it only shows the user_id, without the whole User object)

Any suggestions?