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class Hash
def to_json(options = {}) #:nodoc:
hash_keys = self.keys
if options[:except]
hash_keys = hash_keys - Array(options[:except])
elsif options[:only]
hash_keys = hash_keys & Array(options[:only])
end
returning result = '{' do
result << hash_keys.map do |key|
"#{ActiveSupport::JSON.encode(key)}: #{ActiveSupport::JSON.encode(self[key], options)}"
end * ', '
result << '}'
end
end
end
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