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TL;DR The primary driver is to remove autoload surprise. This is related to #12106. (The root cause for that ticket is that json/add defines Regexp#to_json among others, but here I'll reproduce the problem without json/add.) Before: >> require 'active_support/core_ext/to_json' => true >> //.as_json NoMethodError: undefined method `as_json' for //:Regexp from (irb):3 from /Users/godfrey/.rvm/rubies/ruby-2.0.0-p195/bin/irb:16:in `<main>' >> //.to_json => "\"(?-mix:)\"" >> //.as_json => "(?-mix:)" After: >> require 'active_support/core_ext/to_json' => true >> //.as_json => "(?-mix:)" This is because ActiveSupport::JSON is autoloaded the first time Object#to_json is called, which causes additional core extentions (previously defined in active_support/json/encoding.rb) to be loaded. When someone require 'active_support/core_ext', the expectation is that it would add certain methods to the core classes NOW. The previous behaviour causes additional methods to be loaded the first time you call `to_json`, which could cause nasty surprises and other unplesant side-effects. This change moves all core extensions in to core_ext/json. AS::JSON is still autoloaded on first #to_json call, but since it nolonger include the core extensions, it should address the aforementioned bug. *Requiring core_ext/object/to_json now causes a deprecation warnning* |
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inclusion_test.rb | ||
json_test.rb | ||
to_param_test.rb | ||
to_query_test.rb |