Gab Social. All are welcome.

db/migrate/20170506235850_create_conversations.rb

@@ -0,0 +1,10 @@
+class CreateConversations < ActiveRecord::Migration[5.0]
+  def change
+    create_table :conversations, id: :bigserial do |t|
+      t.string :uri, null: true, default: nil
+      t.timestamps
+    end
+
+    add_index :conversations, :uri, unique: true
+  end
+end