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Response should be encoded in charset
Reported by donncha | March 23rd, 2010 @ 04:14 AM
I have an app which is UTF-8, but needs to output ISO-8859-1 in
response to a particular request. I set the appropriate headers in
the controller method
response.headers['Content-Type'] = 'text/html; charset=ISO-8859-1'
and my template file contains output like
<%= some_string.encode("iso-8859-1") %>
However, Rails renders the file into an ASCII-8BIT string, which
falls over when we try to create an eTag out of it...
if etag.blank?
headers.delete('ETag')
else
headers['ETag'] = %("#{Digest::MD5.hexdigest(ActiveSupport::Cache.expand_cache_key(etag))}")
end
...as the call to blank? assumes the string is UTF-8 and fails with an ArgumentError: (invalid byte sequence in UTF-8). See #2628 for reference.
In my opinion, the response.body should be a string in the same encoding as the charset?
In the meantime, the attached patch is working for me.
Comments and changes to this ticket
-
-
Jeremy Kemper March 23rd, 2010 @ 02:03 PM
- State changed from “new” to “invalid”
Your template needs to have the correct encoding. Set Encoding.default_external = "iso-8859-1".
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donncha March 24th, 2010 @ 12:04 AM
Sorry, doesn't work.
If I add
to the controller's method I still get the "invalid sequence in UTF-8" error. Debugging into ActionController#Base.render shows that External.default_external is in fact ISO-8859-1, but the response.body string still thinks it's UTF-8 (although it contains ISO-8859-1 characters), so it fails at the blank? call.Encoding.default_external = 'iso-8859-1'[188, 197] in /Users/donch/Development/Exact/Steam/3583/vendor/rails/actionpack/lib/action_controller/response.rb 188 def handle_conditional_get! 189 if etag? || last_modified? 190 set_conditional_cache_control! 191 elsif nonempty_ok_response? 192 debugger => 193 self.etag = body 194 195 if request && request.etag_matches?(etag) 196 self.status = '304 Not Modified' 197 self.body = '' /Users/donch/Development/Exact/Steam/3583/vendor/rails/actionpack/lib/action_controller/response.rb:193 self.etag = body (rdb:1) Encoding.default_external #<Encoding:ISO-8859-1> (rdb:1) body.encoding #<Encoding:UTF-8> (rdb:1)Furthermore, my encoding is now also set to ISO-8859-1 for all future requests, which is not what I want. I want to be able to output ISO-8859-1 for a single particular request, but have the rest of my app remain in UTF-8.
If I set the charset for the response to ISO-8859-1, why is the response encoding in UTF-8?
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donncha
Jeremy Kemper