class ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy
This DeprecatedInstanceVariableProxy transforms instance variable to deprecated instance variable.
class Example
def initialize(deprecator)
@request = ActiveSupport::Deprecation::DeprecatedInstanceVariableProxy.new(self, :request, :@request, deprecator)
@_request = :a_request
end
def request
@_request
end
def old_request
@request
end
end
When someone execute any method on @request variable this will trigger warn method on deprecator_instance and will fetch @_request variable via request method and execute the same method on non-proxy instance variable.
Default deprecator is ActiveSupport::Deprecation.
Public Class Methods
# File activesupport/lib/active_support/deprecation/proxy_wrappers.rb, line 79
def initialize(instance, method, var = "@#{method}", deprecator = ActiveSupport::Deprecation.instance)
@instance = instance
@method = method
@var = var
@deprecator = deprecator
end© 2004–2018 David Heinemeier Hansson
Licensed under the MIT License.