ApplicationHelper problem nesting other modules to it

Hi,

I am in the process of learning Ruby and Rails and I am having a
problem with some some helpers that will end up in a plugin. I have
defined the following, approximately:

module ApplicationHelper

def foo
SomeClass.new
end

module A
def method_missing(name, *args)

content_tag(…)

end
end

class SomeClass
include A
def method_missing(name, *args)
super(name args)
end
end

end

Now, the problem is that content_tag is not defined in Module A. I
have tried including into Module A various helper modules of
ActionView but it ends up not finding _erbout, so I gave out using
that route. I was wondering if there is another way to make my Module
A pick up all of the Helper methods of ActionView the same way that
ApplicationHelper does. Ultimately Module A and SomeClass will be
extracted into a plugin, but I wanted to test if what I am trying to
do will work at all… Any suggestions and workarounds would be great!!