feat: add table for storing post drafts

Author: akinsey

priv/repo/migrations/20200716204502_post_drafts.exs

@@ -0,0 +1,20 @@
+defmodule Epoch.Repo.Migrations.PostDrafts do
+  use Ecto.Migration
+  @schema_prefix "posts"
+
+  def up do
+    execute "CREATE SCHEMA #{@schema_prefix}"
+
+    create table(:user_drafts, [prefix: @schema_prefix, primary_key: false]) do
+      add :user_id, references(:users, type: :uuid, on_delete: :delete_all, prefix: "public"), null: false
+      add :draft, :text
+      add :updated_at, :timestamp
+    end
+    create unique_index(:user_drafts, [:user_id], prefix: @schema_prefix)
+  end
+
+  def down do
+    drop table(:user_drafts, [prefix: @schema_prefix])
+    execute "DROP SCHEMA #{@schema_prefix}"
+  end
+end