diff options
Diffstat (limited to 'activesupport/lib/active_support/json/encoding.rb')
| -rw-r--r-- | activesupport/lib/active_support/json/encoding.rb | 117 |
1 files changed, 86 insertions, 31 deletions
diff --git a/activesupport/lib/active_support/json/encoding.rb b/activesupport/lib/active_support/json/encoding.rb index b2adfea273..832d1ce6d5 100644 --- a/activesupport/lib/active_support/json/encoding.rb +++ b/activesupport/lib/active_support/json/encoding.rb @@ -17,6 +17,7 @@ module ActiveSupport class << self delegate :use_standard_json_time_format, :use_standard_json_time_format=, :escape_html_entities_in_json, :escape_html_entities_in_json=, + :encode_big_decimal_as_string, :encode_big_decimal_as_string=, :to => :'ActiveSupport::JSON::Encoding' end @@ -24,7 +25,11 @@ module ActiveSupport # matches YAML-formatted dates DATE_REGEX = /^(?:\d{4}-\d{2}-\d{2}|\d{4}-\d{1,2}-\d{1,2}[T \t]+\d{1,2}:\d{2}:\d{2}(\.[0-9]*)?(([ \t]*)Z|[-+]\d{2}?(:\d{2})?))$/ - # Dumps object in JSON (JavaScript Object Notation). See www.json.org for more info. + # Dumps objects in JSON (JavaScript Object Notation). + # See www.json.org for more info. + # + # ActiveSupport::JSON.encode({ team: 'rails', players: '36' }) + # # => "{\"team\":\"rails\",\"players\":\"36\"}" def self.encode(value, options = nil) Encoding::Encoder.new(options).encode(value) end @@ -47,7 +52,7 @@ module ActiveSupport end end - # like encode, but only calls as_json, without encoding to string + # like encode, but only calls as_json, without encoding to string. def as_json(value, use_options = true) check_for_circular_references(value) do use_options ? value.as_json(options_for(value)) : value.as_json @@ -56,10 +61,11 @@ module ActiveSupport def options_for(value) if value.is_a?(Array) || value.is_a?(Hash) - # hashes and arrays need to get encoder in the options, so that they can detect circular references + # hashes and arrays need to get encoder in the options, so that + # they can detect circular references. options.merge(:encoder => self) else - options + options.dup end end @@ -101,9 +107,14 @@ module ActiveSupport '&' => '\u0026' } class << self - # If true, use ISO 8601 format for dates and times. Otherwise, fall back to the Active Support legacy format. + # If true, use ISO 8601 format for dates and times. Otherwise, fall back + # to the Active Support legacy format. attr_accessor :use_standard_json_time_format + # If false, serializes BigDecimal objects as numeric instead of wrapping + # them in a string. + attr_accessor :encode_big_decimal_as_string + attr_accessor :escape_regex attr_reader :escape_html_entities_in_json @@ -118,13 +129,7 @@ module ActiveSupport def escape(string) string = string.encode(::Encoding::UTF_8, :undef => :replace).force_encoding(::Encoding::BINARY) - json = string. - gsub(escape_regex) { |s| ESCAPED_CHARS[s] }. - gsub(/([\xC0-\xDF][\x80-\xBF]| - [\xE0-\xEF][\x80-\xBF]{2}| - [\xF0-\xF7][\x80-\xBF]{3})+/nx) { |s| - s.unpack("U*").pack("n*").unpack("H*")[0].gsub(/.{4}/n, '\\\\u\&') - } + json = string.gsub(escape_regex) { |s| ESCAPED_CHARS[s] } json = %("#{json}") json.force_encoding(::Encoding::UTF_8) json @@ -132,7 +137,8 @@ module ActiveSupport end self.use_standard_json_time_format = true - self.escape_html_entities_in_json = false + self.escape_html_entities_in_json = true + self.encode_big_decimal_as_string = true end end end @@ -154,32 +160,67 @@ class Struct #:nodoc: end class TrueClass - AS_JSON = ActiveSupport::JSON::Variable.new('true').freeze - def as_json(options = nil) AS_JSON end #:nodoc: + def as_json(options = nil) #:nodoc: + self + end + + def encode_json(encoder) #:nodoc: + to_s + end end class FalseClass - AS_JSON = ActiveSupport::JSON::Variable.new('false').freeze - def as_json(options = nil) AS_JSON end #:nodoc: + def as_json(options = nil) #:nodoc: + self + end + + def encode_json(encoder) #:nodoc: + to_s + end end class NilClass - AS_JSON = ActiveSupport::JSON::Variable.new('null').freeze - def as_json(options = nil) AS_JSON end #:nodoc: + def as_json(options = nil) #:nodoc: + self + end + + def encode_json(encoder) #:nodoc: + 'null' + end end class String - def as_json(options = nil) self end #:nodoc: - def encode_json(encoder) encoder.escape(self) end #:nodoc: + def as_json(options = nil) #:nodoc: + self + end + + def encode_json(encoder) #:nodoc: + encoder.escape(self) + end end class Symbol - def as_json(options = nil) to_s end #:nodoc: + def as_json(options = nil) #:nodoc: + to_s + end end class Numeric - def as_json(options = nil) self end #:nodoc: - def encode_json(encoder) to_s end #:nodoc: + def as_json(options = nil) #:nodoc: + self + end + + def encode_json(encoder) #:nodoc: + to_s + end +end + +class Float + # Encoding Infinity or NaN to JSON should return "null". The default returns + # "Infinity" or "NaN" which breaks parsing the JSON. E.g. JSON.parse('[NaN]'). + def as_json(options = nil) #:nodoc: + finite? ? self : nil + end end class BigDecimal @@ -188,14 +229,26 @@ class BigDecimal # those libraries would get in general a wrong number and no way to recover # other than manually inspecting the string with the JSON code itself. # - # That's why a JSON string is returned. The JSON literal is not numeric, but if - # the other end knows by contract that the data is supposed to be a BigDecimal, - # it still has the chance to post-process the string and get the real value. - def as_json(options = nil) to_s end #:nodoc: + # That's why a JSON string is returned. The JSON literal is not numeric, but + # if the other end knows by contract that the data is supposed to be a + # BigDecimal, it still has the chance to post-process the string and get the + # real value. + # + # Use <tt>ActiveSupport.use_standard_json_big_decimal_format = true</tt> to + # override this behaviour. + def as_json(options = nil) #:nodoc: + if finite? + ActiveSupport.encode_big_decimal_as_string ? to_s : self + else + nil + end + end end class Regexp - def as_json(options = nil) to_s end #:nodoc: + def as_json(options = nil) #:nodoc: + to_s + end end module Enumerable @@ -205,7 +258,9 @@ module Enumerable end class Range - def as_json(options = nil) to_s end #:nodoc: + def as_json(options = nil) #:nodoc: + to_s + end end class Array @@ -241,7 +296,7 @@ class Hash Hash[subset.map { |k, v| [k.to_s, encoder.as_json(v, options)] }] end - def encode_json(encoder) + def encode_json(encoder) #:nodoc: # values are encoded with use_options = false, because we don't want hash representations from ActiveModel to be # processed once again with as_json with options, as this could cause unexpected results (i.e. missing fields); |