method

new_constants_in

v6.0.0 - Show latest stable - 0 notes - Class: ActiveSupport::Dependencies

new_constants_in(*descs) public

Run the provided block and detect the new constants that were loaded during its execution. Constants may only be regarded as ‘new’ once – so if the block calls new_constants_in again, then the constants defined within the inner call will not be reported in this one.

If the provided block does not run to completion, and instead raises an exception, any new constants are regarded as being only partially defined and will be removed immediately.

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# File activesupport/lib/active_support/dependencies.rb, line 697
    def new_constants_in(*descs)
      constant_watch_stack.watch_namespaces(descs)
      success = false

      begin
        yield # Now yield to the code that is to define new constants.
        success = true
      ensure
        new_constants = constant_watch_stack.new_constants

        return new_constants if success

        # Remove partially loaded constants.
        new_constants.each { |c| remove_constant(c) }
      end
    end

new_constants_in

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