add steps

lib/memex/steps/step.ex

@@ -0,0 +1,22 @@
+defmodule Memex.Steps.Step do
+  use Ecto.Schema
+  import Ecto.Changeset
+
+  @primary_key {:id, :binary_id, autogenerate: true}
+  @foreign_key_type :binary_id
+  schema "steps" do
+    field :description, :string
+    field :position, :integer
+    field :title, :string
+    field :pipeline_id, :binary_id
+
+    timestamps()
+  end
+
+  @doc false
+  def changeset(step, attrs) do
+    step
+    |> cast(attrs, [:title, :description, :position])
+    |> validate_required([:title, :description, :position])
+  end
+end