Initial commit

db/migrate/20200609144734_create_comments.rb

@@ -0,0 +1,13 @@
+class CreateComments < ActiveRecord::Migration[5.2]
+  def change
+    create_table :comments do |t|
+      t.bigint :user_id, null: false, unsigned: true
+      t.string :author_uid, limit: 16, null: false
+      t.string :title, limit: 64, null: false
+      t.text   :data, limit: 5120, null: false
+
+      t.timestamps
+      t.index :user_id
+    end
+  end
+end