创建 OrderItems 表 - Rails 数据库迁移

def up create_table :order_items do |t| t.integer :order_id, null: false t.integer :product_id, null: false t.integer :product_sku_id, null: false t.integer :amount, null: false t.decimal :price, precision: 10, scale: 2, null: false t.integer :rating t.text :review t.datetime :reviewed_at

t.timestamps null: false

end

add_foreign_key :order_items, :orders, on_delete: :cascade add_foreign_key :order_items, :products, on_delete: :cascade add_foreign_key :order_items, :product_skus, on_delete: :cascade end