Create nested entities for existing parent entity


#1
  class Users < ROM::Relation[:sql]
       schema(:users, infer: true) do
           associations do
               has_many :tasks
           end
       end
end

  class Tasks < ROM::Relation[:sql]
      schema(:users, infer: true) do
         associations do
             belongs_to :user
        end
     end
end


  class UserRepo < ROM::Repository[:users]
    ;# update_data = { user_id: 123, tasks: [{desc: "test"}, {desc: "test1"}]}
     def update_user(update_data)
         users.transaction do
             users
                .tasks
                .by_user_id(update_data[:user_id])
                .changeset(:create, update_data[:tasks])
                .commit
         end
    end
 end

Hi! In the example above, I want to update the user with new tasks (this is how we say in our domain), but the tasks need user_id (i don’t find a good solution making an operation just for merge user_id for each task) for each item and using associate with changeset involves having the user struct. What is the proper way of handling this case with rom?