utf8_monkey_patches.rb
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unless RUBY_VERSION == '1.8.7'
# Make sure the logger supports encodings properly.
module ActiveSupport
class BufferedLogger
def add(severity, message = nil, progname = nil, &block)
return if @level > severity
message = (message || (block && block.call) || progname).to_s
# If a newline is necessary then create a new message ending with a newline.
# Ensures that the original message is not mutated.
message = "#{message}\n" unless message[-1] == ?\n
buffer << message.force_encoding(Encoding.default_external)
auto_flush
message
end
end
end
# This makes it so all parameters get converted to UTF-8 before they hit your app. If someone sends invalid UTF-8 to your server, raise an exception.
# At UserVoice, we rescue this exception and show a custom error page.
class ActionController::InvalidByteSequenceErrorFromParams < Encoding::InvalidByteSequenceError; end
class ActionController::Base
def force_utf8_params
traverse = lambda do |object, block|
if object.kind_of?(Hash)
object.each_value { |o| traverse.call(o, block) }
elsif object.kind_of?(Array)
object.each { |o| traverse.call(o, block) }
else
block.call(object)
end
object
end
force_encoding = lambda do |o|
if o.respond_to?(:force_encoding)
o.force_encoding(Encoding::UTF_8)
raise ActionController::InvalidByteSequenceErrorFromParams unless o.valid_encoding?
end
if o.respond_to?(:original_filename)
o.original_filename.force_encoding(Encoding::UTF_8)
raise ActionController::InvalidByteSequenceErrorFromParams unless o.original_filename.valid_encoding?
end
end
traverse.call(params, force_encoding)
path_str = request.path.to_s
if path_str.respond_to?(:force_encoding)
path_str.force_encoding(Encoding::UTF_8)
raise ActionController::InvalidByteSequenceErrorFromParams unless path_str.valid_encoding?
end
end
before_filter :force_utf8_params
end
# Serialized columns in AR don't support UTF-8 well, so set the encoding on those as well.
class ActiveRecord::Base
def unserialize_attribute_with_utf8(attr_name)
traverse = lambda do |object, block|
if object.kind_of?(Hash)
object.each_value { |o| traverse.call(o, block) }
elsif object.kind_of?(Array)
object.each { |o| traverse.call(o, block) }
else
block.call(object)
end
object
end
force_encoding = lambda do |o|
o.force_encoding(Encoding::UTF_8) if o.respond_to?(:force_encoding)
end
value = unserialize_attribute_without_utf8(attr_name)
traverse.call(value, force_encoding)
end
alias_method_chain :unserialize_attribute, :utf8
end
# Make sure the flash sets the encoding to UTF-8 as well.
module ActionController
module Flash
class FlashHash
def [](k)
v = super
v.is_a?(String) ? v.force_encoding("UTF-8") : v
end
end
end
end
end