{"provider_url":"https://hatena.blog","published":"2007-09-09 09:30:50","description":"Rails \u3067\u306f\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u6210\u3059\u308b\u306e\u306b\u3001db/migrate/ \u306b\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u7528\u306e\u30d5\u30a1\u30a4\u30eb # $RAILS_ROOT/db/migrate/001_create_entries.rb class CreateEntries < ActiveRecord::Migration def self.up create_table :entries do |t| t.column :title, :string t.column :body, :text end end def self.down drop_table :entries end end \u3092\u4f5c\u3063\u305f\u3042\u3068\u3001 % rake\u2026","height":"190","provider_name":"Hatena Blog","blog_title":"elm200 \u306e\u65e5\u8a18(\u65e7\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc)","width":"100%","author_name":"elm200","blog_url":"https://elm200.hatenadiary.org/","type":"rich","version":"1.0","image_url":null,"url":"https://elm200.hatenadiary.org/entry/20070909/1187829050","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Felm200.hatenadiary.org%2Fentry%2F20070909%2F1187829050\" title=\" Migration \u306e\u6b69\u304d\u65b9 - elm200 \u306e\u65e5\u8a18(\u65e7\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc)\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/elm200/","title":" Migration \u306e\u6b69\u304d\u65b9","categories":["Ruby on Rails"]}