def select(method, choices = nil, options = {}, html_options = {}, &block)
      choices = instance_exec(&choices) if choices.is_a?(Proc)
      super
    end
def select(method, choices = nil, options = {}, html_options = {}, &block)
      choices = instance_exec(&choices) if choices.is_a?(Proc)
      super
    end
Extend select to accept proc type `choices` argument
 @see ActionView::Helpers::FormBuilder#select