class ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy
DeprecatedInstanceVariableProxy
transforms an instance variable into a deprecated one. It takes an instance
of a class, a method on that class and an instance variable. It optionally
takes a deprecator as the last argument. The deprecator defaults to
ActiveSupport::Deprecator
if none is specified.
class Example def initialize @request = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(self, :request, :@request) @_request = :special_request end def request @_request end def old_request @request end end example = Example.new # => #<Example:0x007fb9b31090b8 @_request=:special_request, @request=:special_request> example.old_request.to_s # => DEPRECATION WARNING: @request is deprecated! Call request.to_s instead of @request.to_s (Backtrace information…) "special_request" example.request.to_s # => "special_request"
Public Class Methods
new(instance, method, var = "@
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# File lib/active_support/deprecation/proxy_wrappers.rb, line 91 def initialize(instance, method, var = "@#{method}", deprecator = ActiveSupport::Deprecation.instance) @instance = instance @method = method @var = var @deprecator = deprecator end
Private Instance Methods
target()
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# File lib/active_support/deprecation/proxy_wrappers.rb, line 99 def target @instance.__send__(@method) end
warn(callstack, called, args)
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# File lib/active_support/deprecation/proxy_wrappers.rb, line 103 def warn(callstack, called, args) @deprecator.warn("#{@var} is deprecated! Call #{@method}.#{called} instead of #{@var}.#{called}. Args: #{args.inspect}", callstack) end