Moritz,
Didn't know about the lurl(), but I don't think that is the root of the
problem. I don't have access to any of the tg namespace. The problem
seems to be in widget.display(). I can pull up a shell, make a
*jbar=HomeMenuBar('home_dom_id'))
*object but calling jbar.display() (or jbar.render()) throws the same
"request" or "tg" not defined error.
It seems like the template code for widgets is being evaluated separately
from that of the master.html template (which makes sense), I just don't
know how to import tg or request (or other TG modules) into a widget's
namespace.
Looking through the various widget templates, I haven't seen examples of tg
or other namespaces being used. Perhaps I am going about this the wrong
way?
- Shane
On Friday, May 3, 2013 1:46:45 AM UTC-5, Moritz Schlarb wrote:
>
> Use the lazy variant that gets evaluated as late as possible:
> tg.lurl()
>
> Am Freitag, 3. Mai 2013 07:16:55 UTC+2 schrieb Shane:
>>
>> Hello,
>>
>> I am building a JBar menubar widget for a TG application. I was planning
>> to build different menubars by subclassing a base JBar(Widget) class and
>> modifying the template. The problem is that I need to use tg.url and
>> request objects to modify the menu from the controller. When I call the
>> display() method on my *HomeMenuBar*, I get:
>>
>> *UndefinedError: "request" not defined*
>>
>> So, I'm not getting access to request (or tg.url) in the environment of
>> my widget template. How do I do this?
>>
>> To summarize what is happening (ToscaWidgets 0.9.12, TurboGears2 2.2.0):
>>
>> *class HomeMenuBar (JBar):*
>> * template=('''*
>> * <html xmlns="http://www.w3.org/1999/xhtml"*
>> * xmlns:py="http://genshi.edgewall.org/"*
>> * xmlns:xi="http://www.w3.org/2001/XInclude"*
>> * py:attrs="attrs" *
>> * py:strip="">*
>> * *
>> * <ul class="${menu_css}">*
>> * <li><a py:if="request.identity"
>> href="${tg.url('/about')}">About</a></li> *
>> * <li><a py:if="request.identity" href='/pdf/User
>> Manual.pdf'>Help</a></li>*
>> * <li><a py:if="request.identity" id="login"
>> class="loginlogout" href="${tg.url('/logout_handler')}">Logout</a></li>*
>> * </ul>*
>> * *
>> * </html>*
>> * ''')*
>> *home_menu_bar=HomeMenuBar('home_menu')*
>>
>> I create the object once in my widgets.MenuBar.py and pass from the
>> controller to another template in the tmpl_context:
>>
>> *@expose('MyApp.templates.TableView')*
>> *@expose('json')*
>> *def home (self, *args, **kw):*
>> * ...*
>> * tmpl_context.menu_bar=MenuBars.home_menu_bar*
>> * return {}*
>>
>> In my *TableView.html *template, I include:
>>
>> *<xi:include href="master.html" />*
>>
>> which finally brings in the menu bar across the top of each page:
>> ....
>> *<div py:if="hasattr(tmpl_context, 'menu_bar')" id="menu_bar_container">*
>> * ${tmpl_context.menu_bar.display()}*
>> *</div>*
>> ....
>>
>> I had previously passed a genshi method name from controller to template
>> in order to accomplish the same task, but I wanted to put the menubar into
>> a widget, as this allows more flexibility to modify the menu in the
>> controller.
>>
>> Thank you,
>>
>> Shane
>>
>
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