From: brad smith <bradleydsmith@...>
Date: 2013-06-04T05:05:26+09:00
Subject: Re: Cannot access constants from included modules in a submodule

--089e0160a3b820f6ce04de457cb7
Content-Type: text/plain; charset=ISO-8859-1

can you put the actual code in a gist or something to make it easier to
read.

Thanks,
Brad


On Mon, Jun 3, 2013 at 11:38 AM, Bram S. <lists@ruby-forum.com> wrote:

> Hi there,
>
> I am trying to include a bunch of constants into a module and all its
> "submodules" (by this I mean modules that are defined within the scope
> of the first module; is there a word for that?), but the constants only
> seem accessible in the module that directly includes them, not in a
> submodule.  See this example:
>
> ===
> module FooModule
>
>   Foo = :foo
>
> end
>
> module BarModule
>
>   include FooModule
>
>   Bar = :bar
>
>   p ancestors # => [BarModule, FooModule]
>   p Bar # works
>   p Foo # works
>
>   module SubBarModule
>
>     p ancestors # => [BarModule::SubBarModule]
>     p Bar # works
>     p Foo # fails
>
>   end
>
> end
> ===
>
> Now if the SubBarModule's ancestors do not include FooModule, I can
> understand that it cannot access Foo, but on the other hand,
> SubBarModule's ancestors do not include BarModule either, so why can it
> acces Bar?
>
> Tested in Ruby 1.8.7, 1.9.3p0 and 2.0.0p195, just to be sure that the
> semantics have not changed -- it seems to be they haven't.
>
> Regards,
>
> Bram Senders
> bupknar@gmail.com
>
> --
> Posted via http://www.ruby-forum.com/.
>
>

--089e0160a3b820f6ce04de457cb7
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr">can you put the actual code in a gist or something to make=
 it easier to read.<div><br></div><div style>Thanks,</div><div style>Brad</=
div></div><div class=3D"gmail_extra"><br><br><div class=3D"gmail_quote">On =
Mon, Jun 3, 2013 at 11:38 AM, Bram S. <span dir=3D"ltr">&lt;<a href=3D"mail=
to:lists@ruby-forum.com" target=3D"_blank">lists@ruby-forum.com</a>&gt;</sp=
an> wrote:<br>
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">Hi there,<br>
<br>
I am trying to include a bunch of constants into a module and all its<br>
&quot;submodules&quot; (by this I mean modules that are defined within the =
scope<br>
of the first module; is there a word for that?), but the constants only<br>
seem accessible in the module that directly includes them, not in a<br>
submodule. =A0See this example:<br>
<br>
=3D=3D=3D<br>
module FooModule<br>
<br>
=A0 Foo =3D :foo<br>
<br>
end<br>
<br>
module BarModule<br>
<br>
=A0 include FooModule<br>
<br>
=A0 Bar =3D :bar<br>
<br>
=A0 p ancestors # =3D&gt; [BarModule, FooModule]<br>
=A0 p Bar # works<br>
=A0 p Foo # works<br>
<br>
=A0 module SubBarModule<br>
<br>
=A0 =A0 p ancestors # =3D&gt; [BarModule::SubBarModule]<br>
=A0 =A0 p Bar # works<br>
=A0 =A0 p Foo # fails<br>
<br>
=A0 end<br>
<br>
end<br>
=3D=3D=3D<br>
<br>
Now if the SubBarModule&#39;s ancestors do not include FooModule, I can<br>
understand that it cannot access Foo, but on the other hand,<br>
SubBarModule&#39;s ancestors do not include BarModule either, so why can it=
<br>
acces Bar?<br>
<br>
Tested in Ruby 1.8.7, 1.9.3p0 and 2.0.0p195, just to be sure that the<br>
semantics have not changed -- it seems to be they haven&#39;t.<br>
<br>
Regards,<br>
<br>
Bram Senders<br>
<a href=3D"mailto:bupknar@gmail.com">bupknar@gmail.com</a><br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
--<br>
Posted via <a href=3D"http://www.ruby-forum.com/" target=3D"_blank">http://=
www.ruby-forum.com/</a>.<br>
<br>
</font></span></blockquote></div><br></div>

--089e0160a3b820f6ce04de457cb7--