如何检查Rails上传的文件类型? [英] How to check in rails uploaded file type?

问题描述

如何查看即将发送的文件类型? 例如，csv或xls ... 请输入密码... 我收到文件是这样的:

How can i see what type of file is comming? For example, csv or xls... Give code please... I get file so:

aut_name = uploaded_io.original_filename
      File.open(Rails.root.join('public', 'uploads_prices', uploaded_io.original_filename), 'wb') do |file|
        file.write(uploaded_io.read)
      end
      as_load(aut_name)

也许是通过MIMO，但是如何?

Maybe by MIMO, but how?

推荐答案

uploaded_io.content_type包含文件的MIME类型.

uploaded_io.content_type contains the MIME type of file.

所以:

uploaded_io.content_type == "text/csv"

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