RSpec
Ruby on Rails
Ruby
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new
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append_features
(>= v7.1.3.2)
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class
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const_missing
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extended
(>= v7.1.3.2)
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inspect
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method_missing
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prepend_features
(>= v7.1.3.2)
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target
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warn
(<= v5.2.3)
= private
= protected
DeprecatedConstantProxy transforms a constant into a deprecated one. It takes the names of an old (deprecated) constant and of a new constant (both in string form) and optionally a deprecator. The deprecator defaults to +ActiveSupport::Deprecator+ if none is specified. The deprecated constant now returns the value of the new one.
PLANETS = %w(mercury venus earth mars jupiter saturn uranus neptune pluto) # (In a later update, the original implementation of `PLANETS` has been removed.) PLANETS_POST_2006 = %w(mercury venus earth mars jupiter saturn uranus neptune) PLANETS = ActiveSupport::Deprecation::DeprecatedConstantProxy.new('PLANETS', 'PLANETS_POST_2006') PLANETS.map { |planet| planet.capitalize } # => DEPRECATION WARNING: PLANETS is deprecated! Use PLANETS_POST_2006 instead. (Backtrace informationâ¦) ["Mercury", "Venus", "Earth", "Mars", "Jupiter", "Saturn", "Uranus", "Neptune"]
