Need help with has_one [SOLVED]

Questions / Help
1

I’m struggling with a one-to-one mapping, I would like :monday to point to a Day, and that day should only belong to one Schedule.

defmodule Ftest.Energy.Day do
  use Ecto.Schema
  import Ecto.Changeset
  alias Ftest.Energy.Schedule

  schema "hours" do
    field :hour_00, :float
    field :hour_01, :float
    belongs_to :schedule, Schedule
  end

  @doc false
  def changeset(day, attrs) do
    day
    |> cast(attrs, [:hour_00, :hour_01, :schedule_id])
    |> validate_required([:hour_00, :hour_01])
  end
end

defmodule Ftest.Energy.Schedule do
  use Ecto.Schema
  import Ecto.Changeset
  alias Ftest.Energy.Day

  schema "schedules" do
    has_one :monday, Day
  end

  @doc false
  def changeset(schedule, attrs) do
    schedule
    |> cast(attrs, [])
    |> cast_assoc(:monday)
  end
end


  def create_new do
    Schedule.changeset(%Schedule{},
      %{
        monday: %{hour_00: 1.0, hour_01: 2.0}
      }
    ) |> Repo.insert
  end

If I insert using the create_new, :monday is empty.

Any help or suggestions are greatly appreciated :slight_smile:

Solved by stackexchange, replaced has_on with belongs_to