Question

如何教ActiveSupport不要覆盖标准的“json”gem行为？

require "rubygems"
gem "json"
require "json"

class Time
  def to_json(options = nil)
    "custom string"
  end
end

hash = { :x => Time.now }

puts hash.to_json # => {"x":custom string}

gem "activesupport"
require "active_support/core_ext/object" # Somewhere into Rails internals

puts Time.now.to_json # => custom string

puts hash.to_json # => {"x":"2011-02-14T16:30:10+05:00"}

预计：在需要“active_support / core_ext / object”后，我想获得{“x”：自定义字符串}结果。

Answer 1

由于某些重要原因，自v2.3.3转换为#as_json以来的Rails。所以和它一起跳舞。

http://weblog.rubyonrails.org/2009/7/20/rails-2-3-3-touching-faster-json-bug-fixes

Answer 2

你必须定义

class Time
  def to_json(options = nil)
    "custom string"
  end
end

之后

gem "activesupport"
require "active_support/core_ext/object"

码

Answer 3

如何使用Time.now strftime格式化Time.now.strftime("format")格式字符串Time.now.to_s，请参阅Ruby Docs。

或者，如果您不想格式化它，只需将其用作字符串调用{{1}}

ActiveSupport会覆盖#to_json行为

3 个答案: