RSpec
Ruby on Rails
Ruby
-
add_whiner
-
as_json
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blank?
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duplicable?
-
encode_json
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id
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method_missing
(<= v3.1.0)
-
raise_nil_warning_for
(<= v3.1.0)
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to_json
(<= v2.2.1)
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to_param
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try
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try!
(>= v4.0.2)
= private
= protected
Extensions to nil which allow for more helpful error messages for people who are new to Rails.
NilClass#id exists in Ruby 1.8 (though it is deprecated). Since id is a fundamental method of Active Record models NilClass#id is redefined as well to raise a RuntimeError and warn the user. She probably wanted a model database identifier and the 4 returned by the original method could result in obscure bugs.
The flag config.whiny_nils determines whether this feature is enabled. By default it is on in development and test modes, and it is off in production mode.
