Ecto, Contexts and Naming References

Hello there,
My first post here.

I am playing out with Elixir and the new Phoenix (1.3). Tried to create a Todo app following the code snippets here: Working with Ecto associations and embeds « Plataformatec Blog

Since it is Phoenix 1.3, I tried to put them into context. However, naming seems to be confusing.

I created the project as follows:

mix phx.gen.html Todo List lists title:string

mix phx.gen.schema Todo.Item items body:text list_id:references:lists

scheme are as follows:

schema "todo_lists" do
    field :title, :string
		has_many :todo_items, TodoApp.Todo.Item

    timestamps()
  end 

…

 schema "todo_items" do
    field :body, :string
    #field :todo_list_id, :id
		belongs_to :todo_list, TodoApp.Todo.List
		
    timestamps()
  end

I receive this error:

Ecto.QueryError at GET /lists/4
deps/ecto/lib/ecto/association.ex:495: field TodoApp.Todo.Item.list_id in where does not exist in the schema in query:

from i in TodoApp.Todo.Item,
where: i.list_id == ^4,
order_by: [asc: i.list_id],
select: {i.list_id, i}

It is clear that alto it should be TodoApp.Todo.Item.todo_list_id for in the DB there is no such field as list_id but todo_list_id.

How to fix this?