init: inital commit

lib/localiser/domain/schema/sensor_calibration.ex

@@ -0,0 +1,26 @@
+defmodule Localiser.Domain.Schema.SensorCalibration do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  alias Localiser.Domain.Schema.Sensor
+
+  @timestamps_opts [inserted_at: :inserted_at, updated_at: false, type: :utc_datetime]
+
+  schema "sensor_calibrations" do
+    field :rssi_ref, :integer
+    field :path_loss_exp, :float
+    field :calibrated_at, :utc_datetime
+
+    belongs_to :sensor, Sensor
+
+    timestamps(@timestamps_opts)
+  end
+
+  @doc false
+  def changeset(calibration, attrs) do
+    calibration
+    |> cast(attrs, [:sensor_id, :rssi_ref, :path_loss_exp, :calibrated_at])
+    |> validate_required([:sensor_id, :rssi_ref, :path_loss_exp, :calibrated_at])
+    |> assoc_constraint(:sensor)
+  end
+end