On Jul 19, 1:32 am, Dan <[email protected]> wrote:
> I'm putting together a quick routine to assemble a horizontal menu bar
> in my layout.html file (does one already exist? I only saw the one
> called MENU() to create vertical menus).
Yes,
{{=MENU(response.menu,_class="web2py-menu web2py-menu-horizontal")}}
I thought it would be a
> simple map-reduce operation, but I'm getting a strange result. Here is
> the code in my view file:
>
> {{=response.write(' | '.join(map(lambda m:'<a href="%s">%s</a>'%
> (m[2],m[0]),response.menu_user)),False)}}{{pass}}
>
> which produces this (from View Source):
> <a href="/user/login">Login</a> | <a href="/user/register">Register
> for a new account</a>None
>
> I can't figure out why the "None" is being added at the end. Looking
> at the examples on this page, I see a different approach using a for:
> loop, so I tried that and sure enough, the results do not have a
> "None" hanging on to the end.
Becuase these two are equivalent:
{{response.write(' | '.join(map(lambda m:'<a href="%s">%s</a>'% (m[2],m
[0]),response.menu_user)),False)}}
{{=XML(' | '.join(map(lambda m:'<a href="%s">%s</a>'% (m[2],m
[0]),response.menu_user)))}}
but response.write returns None
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