Add a custom format in Rails (that will work with respond_to)

Question

I have map.resources :posts and I want to be able to serve post bodies in markdown format. So I set up my respond_to block:

respond_to do |format|
  format.markdown {
    render :text => @post.body.to_s
  }
end

But when I try to access /posts/1234.markdown, I get this error:

NameError (uninitialized constant Mime::MARKDOWN):
  app/controllers/posts_controller.rb:96:in `show'
  app/controllers/posts_controller.rb:79:in `show'

How do I add markdown as an acceptable format? Where can I see the list of acceptable formats?

score 35 · Accepted Answer · edited Mar 28 '17 at 16:04

35

http://weblog.rubyonrails.org/2006/12/19/using-custom-mime-types

# add in config/initializers/mime_types.rb
Mime::Type.register "text/markdown", :markdown

edited Mar 28 '17 at 16:04

Taylor Williams

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answered Mar 16 '10 at 16:37

clyfe

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27

Probably `config/initializers/mime_types.rb` might be the appropriate place for registering a new MIME type. – Harish Shetty Mar 16 '10 at 18:23
the link has been removed – baash05 May 23 '13 at 00:05
2

The link is actually broken. You can find the article at http://weblog.rubyonrails.org/2006/12/18/using-custom-mime-types/ – yagooar Jun 02 '13 at 11:27
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@HarishShetty 's comment is an essential part of this answer. Please update your answer -- current docs suggest `config/initializers/mime_types.rb` -- http://guides.rubyonrails.org/action_controller_overview.html#restful-downloads – Don Cheadle Feb 09 '15 at 16:25

score 1 · Answer 2 · answered Mar 16 '10 at 16:36

1

Mime::Types.register

answered Mar 16 '10 at 16:36

yfeldblum

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Add a custom format in Rails (that will work with respond_to)

2 Answers2

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