When mako renders the template, it results in just plain old HTML
(plus js or css etc) - meaning it can't represent an actual Python
object (None) since HTML has no notion of objects, or python for that
matter. So basically, actual objects can't be POSTed or GETed. You
have to use strings and interpret/assemble that info correctly on the
server side.
Pylons can't interpret the u'None' value for you because it is
ambiguous - did the user type in 'None' and submit, or is this 'None'
the actual python None.
hth,
Chris
On Feb 14, 3:53 pm, Eric Ongerth <[EMAIL PROTECTED]> wrote:
> Newbie here, but getting somewhere. But I just hit this one problem,
> the straightening out of which will hopefully also cure me of some
> related misconceptions or poor assumptions.
>
> In one of my mako templates, I have something like the following. The
> trouble I am having is with passing the value None through the form
> submission.
>
> <% foo = None %>
>
> ${h.form_remote_tag(url=h.url(action="DoXYZ", bar=foo), update="abc",
> method="GET")}
> ${h.text_field(name="frobnitz")}
> ${h.submit(value='save', name='commit')}
> ${h.end_form()}
>
> <div id="abc"></div>
>
> ...now when the request reaches the controller:
>
> bar = request.params['bar']
>
> ... and at this point, unfortunately the value of bar is u'None' .. a
> text string rather than the actual python None.
>
> Why does that happen? It is easy to write an ugly workaround for it,
> but instead I'm trying to understand better what's behind it and
> hopefully my rewritten solution will stay more elegant.
>
> Thanks.
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