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-rwxr-xr-xactionpack/lib/action_controller/cgi_ext/cgi_methods.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/actionpack/lib/action_controller/cgi_ext/cgi_methods.rb b/actionpack/lib/action_controller/cgi_ext/cgi_methods.rb
index 817d9d0d0d..a2ba601662 100755
--- a/actionpack/lib/action_controller/cgi_ext/cgi_methods.rb
+++ b/actionpack/lib/action_controller/cgi_ext/cgi_methods.rb
@@ -91,7 +91,7 @@ class CGIMethods #:nodoc:
# test most frequent case first
if value.is_a?(String)
value
- elsif value.respond_to?(:content_type)
+ elsif value.respond_to?(:content_type) && ! value.content_type.blank?
# Uploaded file
unless value.respond_to?(:full_original_filename)
class << value