Rack fails with Rails when I try to upload file (using paper clip) on Ruby 1.9

Question

Hi,

I have a Ruby on Rails application I'm using Ruby 1.9 and Rails 2.3.4 and I want users to upload videos so I installed Paperclip gem but I'm getting this error from Rack. The fact that it says it's "invalid byte sequence" makes me suspect that it's from Ruby 1.9.

any ideas?

Thanks,

Tam

Rendering posts/new
Rendered posts/_form (4.5ms)
Rendered layouts/_footer (13.5ms)
Completed in 238ms (View: 161, DB: 8) | 200 OK [http://localhost/posts/new]
/!\ FAILSAFE /!\  2009-09-25 17:26:06 -0700
  Status: 500 Internal Server Error
  invalid byte sequence in US-ASCII
    /Users/tammam56/.gem/ruby/1.9.1/gems/rack-1.0.0/lib/rack/utils.rb:324:in `=~'
    /Users/tammam56/.gem/ruby/1.9.1/gems/rack-1.0.0/lib/rack/utils.rb:324:in `block in parse_multipart'
    /Users/tammam56/.gem/ruby/1.9.1/gems/rack-1.0.0/lib/rack/utils.rb:319:in `loop'
    /Users/tammam56/.gem/ruby/1.9.1/gems/rack-1.0.0/lib/rack/utils.rb:319:in `parse_multipart'
    /Users/tammam56/.gem/ruby/1.9.1/gems/rack-1.0.0/lib/rack/request.rb:141:in `POST'

The form:

<% form_for @post, :html => {:multipart => true} do |f| %>
    <table width='100%' border="1">
     <tr>
      <td colspan="2">
       <h2>Post your Story</h2>
      </td>
     </tr> 
     <tr>
      <td nowrap="nowrap" width="20%">
       <p class="new_post_labels">I'm single bacause </p>
       <div id='ErrorMessage_title'></div>
      </td>
      <td>
       <%= f.text_field :title, :class => "grayInput fromInputPost", :maxLength =>100, :size => "50" %>
      </td>  
     </tr> 
     <tr>
      <td nowrap="nowrap" width="20%" valign="top">
       <p class="new_post_labels">Story Details (maximum 500 characters) </p>
       <div class="char_counter_new" id='actual_msg_count'>0/500</div>
       <div id='ErrorMessage_description'></div>    
      </td>
      <td>
       <%= f.text_area :description, :id => 'the_message_textarea', :size => "45x5", :class => "grayInput fromInputPostArea", :onkeyup => "calculate_msg_char_counter();", :id => "the_message_textarea" %>          
      </td>  
     </tr>  
     <tr>
      <td nowrap="nowrap" width="20%">
       <p class="new_post_labels">Video URL(optional - 90 seconds max)</p>
      </td>
      <td>
       <%= f.file_field :video %>
       <%= f.text_field :video_link, :class => "grayInput fromInputPost", :maxLength =>255, :size => "50" %>
      </td>  
     </tr>
     <tr>
      <td>
      </td>
      <td align="left" nowrap="nowrap">
       <p class="new_post_labels"><%= f.check_box :is_notify_when_comment %>Email me when someone comments on my story</p>
      </td>
     </tr> 
     <tr>
      <td></td>
      <td>
       <input type="button" value="Submit the Story" class="btnSubmitNewUser" onClick="validate_fields(this.form);" />&nbsp;
      </td>
     </tr>
    </tabl

e>
<% end %>

Answer 1

Looks like there's an answer here:

http://rubynyc.wordpress.com/ruby-1-9-1/paperclip-triggering-a-invalid-byte-sequence-in-us-ascii/

Essentially, the fix is to uninstall the version of Rack that comes with Rails and reinstall the gem from github. Of course, you might want to try this on another machine first... :-)