Type:
Class
This DeprecatedInstanceVariableProxy transforms instance variable to deprecated instance variable.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | 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 endend |
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.