ma2 https://blog.hatena.ne.jp/ma2/ ma2’s diary https://ma2.hatenadiary.com/ sinatra 何気なく DataMapper のバージョンを 0.10.x から 1.0.0 に上げたらエラー。 NoMethodError at /localhost undefined method `titleize' for Extlib::Inflection:Module ログの方にはこんな感じ。 H:/heroku/dzz/vendor/bundle/ruby/1.8/gems/dm-core-1.0.0/lib/dm-core.rb:49: warning: already initialized constant Inflector どうも Inflector に titleize メソッ… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fma2.hatenadiary.com%2Fentry%2F20100905%2Fp1" title=" DataMapper 1.0.0 をactive_support 2.3.8で使う - ma2’s diary" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2010-09-05 00:00:00 rich https://ma2.hatenadiary.com/entry/20100905/p1 1.0 100%