Some work

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

priv/repo/migrations/20180702154630_remove_slug_for_event.exs

@@ -0,0 +1,15 @@
+defmodule Eventos.Repo.Migrations.RemoveSlugForEvent do
+  use Ecto.Migration
+
+  def up do
+    alter table(:events) do
+      remove(:slug)
+    end
+  end
+
+  def down do
+    alter table(:events) do
+      add :slug, :string, null: false
+    end
+  end
+end