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form_tagを使ったファイルのアップロード(ファイルシステムに保存)

Last updated at Posted at 2013-06-03

view

<%= form_tag({:action=>"upload"}, {:multipart => true} ) do %>
   <%= file_field :upload, :datafile%>
   <%= submit_tag  "Upload"  %>
<% end %>

ソース


<form accept-charset="UTF-8" action="/upload/upload" enctype="multipart/form-data" method="post">
   <input id="upload_datafile" name="upload[datafile]" type="file" />
   <input name="commit" type="submit" value="Upload" />
</form>

コントローラ

def upload
  data=params[:upload]
  File.open('./tmp/files/'+ data[:datafile].original_filename, 'wb') do |of|
    of.write(data[:datafile].read)
  end
  redirect_to upload_index_path
end
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