Module: ActiveSupport::JSON

Defined in:
activesupport/lib/active_support/json/encoding.rb,
activesupport/lib/active_support/json/decoding.rb

Defined Under Namespace

Modules: Encoding

Constant Summary

DATE_REGEX =

matches YAML-formatted dates

/^(?:\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})?))$/

Class Method Summary (collapse)

Class Method Details

+ (Object) decode(json, options = {})

Parses a JSON string (JavaScript Object Notation) into a hash. See www.json.org for more info.

ActiveSupport::JSON.decode("{\"team\":\"rails\",\"players\":\"36\"}")
=> {"team" => "rails", "players" => "36"}


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# File 'activesupport/lib/active_support/json/decoding.rb', line 19

def decode(json, options = {})
  if options.present?
    raise ArgumentError, "In Rails 4.1, ActiveSupport::JSON.decode no longer " \
      "accepts an options hash for MultiJSON. MultiJSON reached its end of life " \
      "and has been removed."
  end

  data = ::JSON.parse(json, quirks_mode: true)

  if ActiveSupport.parse_json_times
    convert_dates_from(data)
  else
    data
  end
end

+ (Object) encode(value, options = nil)

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\"}"


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# File 'activesupport/lib/active_support/json/encoding.rb', line 20

def self.encode(value, options = nil)
  Encoding.json_encoder.new(options).encode(value)
end

+ (Object) parse_error

Returns the class of the error that will be raised when there is an error in decoding JSON. Using this method means you won't directly depend on the ActiveSupport's JSON implementation, in case it changes in the future.

begin
  obj = ActiveSupport::JSON.decode(some_string)
rescue ActiveSupport::JSON.parse_error
  Rails.logger.warn("Attempted to decode invalid JSON: #{some_string}")
end


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# File 'activesupport/lib/active_support/json/decoding.rb', line 45

def parse_error
  ::JSON::ParserError
end