在Rails中使用MIME类型呈现文件 [英] Rendering file with MIME Type in rails

问题描述

代码如下:

render :file => @somedir + "/blah.xml"

...但是当我检入FireBug时，得到的MIME类型是text/html.在这种情况下，如何指定MIME类型?

...but the resulting MIME type is text/html when I check in FireBug. How do I specify a MIME type in this case?

推荐答案

实际上，有两种方法可以设置content-type(我认为这就是mime-type的意思).如果适用于您的Rails版本，则应使用第二个选项.

Actually there are two ways to set the content-type (I think this is what you mean by mime-type). You should use the second option, if it works for your Rails version.

class FileController < ApplicationController

  def index
    filename = 'some.xml'

    extname = File.extname(filename)[1..-1]
    mime_type = Mime::Type.lookup_by_extension(extname)
    content_type = mime_type.to_s unless mime_type.nil?

    # 1
    #headers['Content-Type'] = content_type
    #render :file => filename

    # 2
    render :file => filename, :content_type => content_type
  end

end

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