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  <author_name>craccho</author_name>
  <author_url>https://blog.hatena.ne.jp/craccho/</author_url>
  <blog_title>Paamayim Nekudotayim</blog_title>
  <blog_url>https://craccho.hatenadiary.org/</blog_url>
  <categories>
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  <description>認証して、なおかつファイルをアップロードするときに、以下のようなコードを書いてはいけない。 class ApplicationController &lt; ActionController::Base def authenticate flash[:request_params] = request.parameters unless session[:shop_id] @logged_in_shop = nil redirect_to :controller =&gt; &quot;shop&quot;, :action =&gt; :login false else @logged_in_shop ||= Shop.find…</description>
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  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2007-03-05 00:00:00</published>
  <title>singleton can’t be dumped [Rails]</title>
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  <url>https://craccho.hatenadiary.org/entry/20070305</url>
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