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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