Toscawidgets and CherryPy

[Holger Bast]

Hi,

I'm trying to use sprox (http://sprox.org/ uses tw for form generation) together with cherrypy and mako, but I'm stuck because of the initialization of the underlying ToscaWidgets.

Using sprox, like it is described in the tutorials on http://sprox.org/, brings always to the following error:

TypeError: No object (name: ToscaWidgets per-request storage) has been registered for this thread

It seems that the tw is not initialized and so it can not be used by sprox. I started reading the tw documentation and found some sample code to get started with tw on cherrypy:

http://toscawidgets.org/documentation/ToscaWidgets/install/cherrypy_app.html

I only used the wrapper function from the sample

def tw_middleware(app):
    from tw.api import make_middleware
    conf = {'toscawidgets.framework.default_view':'genshi',
            'toscawidgets.middleware.inject_resources': 'true'}
    return make_middleware(app, conf, stack_registry=True)

adapted it for mako:

def tw_middleware(app):

    from tw.api import make_middleware

    conf = {'toscawidgets.framework.default_view' : 'mako',

            'toscawidgets.middleware.inject_resources': True}

    print "tw_middleware called"

    return make_middleware(app, conf, stack_registry=True)

and put the following code in my cherrypy configuration:

    "toscawidgets.on": True,

    'wsgi.pipeline': [('tw', tw_middleware)],

But I always get the same error,...

--- SNIP ---

    print registration_form()
  File "/usr/local/lib/python2.7/site-packages/sprox/viewbase.py", line 113, in __call__
    return self.display(*args, **kw)
  File "/usr/local/lib/python2.7/site-packages/sprox/viewbase.py", line 119, in display
    return self.__widget__.display(*args, **kw)
  File "/usr/local/lib/python2.7/site-packages/sprox/viewbase.py", line 108, in __widget__
    self.___widget__ = self.__base_widget_type__(**self.__widget_args__)
  File "/usr/local/lib/python2.7/site-packages/sprox/viewbase.py", line 123, in __widget_args__
    return self._do_get_widget_args()
  File "/usr/local/lib/python2.7/site-packages/sprox/formbase.py", line 236, in _do_get_widget_args
    d = super(FormBase, self)._do_get_widget_args()
  File "/usr/local/lib/python2.7/site-packages/sprox/viewbase.py", line 126, in _do_get_widget_args
    widget_dict = self._do_get_field_widgets(self.__fields__)
  File "/usr/local/lib/python2.7/site-packages/sprox/formbase.py", line 285, in _do_get_field_widgets
    widgets = super(FormBase, self)._do_get_field_widgets(fields)
  File "/usr/local/lib/python2.7/site-packages/sprox/viewbase.py", line 250, in _do_get_field_widgets
    widgets[field_name] = field_widget_type(**field_widget_args)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/core/util.py", line 161, in wrapper
    base.__dict__[post_name](self, *args, **kw)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/core/base.py", line 403, in post_init
    self._collect_resources()
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/core/base.py", line 384, in _collect_resources
    oset.add_all(chain(*[c._resources for c in self.javascript]))
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/core/util.py", line 311, in add_all
    self.add(item)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/core/util.py", line 306, in add
    if item not in self:
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/core/resources.py", line 444, in __eq__
    return getattr(other, "link", None) == self.link
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/core/resources.py", line 433, in _get_link
    return tw.framework.url(url or '')
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/mods/base.py", line 114, in url
    prefix = self.request_local.environ['toscawidgets.prefix']
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/core/registry.py", line 144, in __getattr__
    return getattr(self._current_obj(), attr)
  File "/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/tw/core/registry.py", line 201, in _current_obj
    'thread' % self.____name__)
TypeError: No object (name: ToscaWidgets per-request storage) has been registered for this thread

--- SNIP ---

Now I'm stuck. I already read the posts about that topic here in the mailing list. Some help would be great!

Thanks + bye, Holger

[Mengu]

hey, i'm just bumping up this thread so anyone aware of this issue but
haven't seen your post read, might answer.

On Apr 7, 9:52 pm, Holger Bast <holger.b...@googlemail.com> wrote:
> Hi,

> I'm trying to use sprox (http://sprox.org/uses tw for form generation)

> together with cherrypy and mako, but I'm stuck because of the
> initialization of the underlying ToscaWidgets.
>

> Using sprox, like it is described in the tutorials onhttp://sprox.org/,

> brings always to the following error:
> TypeError: No object (name: ToscaWidgets per-request storage) has been
> registered for this thread
>
> It seems that the tw is not initialized and so it can not be used by sprox.
> I started reading the tw documentation and found some sample code to get

> started with tw on cherrypy:http://toscawidgets.org/documentation/ToscaWidgets/install/cherrypy_a...