[TurboGears] Re: widget - dynamically contruct template string on __init__

[Kevin Dangoor]

On 1/7/06, Ksenia Marasanova [EMAIL PROTECTED] wrote:
  class MyWidget(Widget):
  def __init__(self, *args, **kwargs):
  # just use textarea template for testing
  kwargs['template'] = 
  div xmlns:py=http://purl.org/kid/ns#; py:strip=True
  textarea name=${widget.name} id=${widget.name}
  class=textarea_field
  py:attrs=widget.attrs${widget_value}/textarea
 span class=field_error
  py:if=widget_error${str(widget_error)}/span
  /div
 super(MyWidget, self).__init__(*args, **kwargs)

 Okay, I see it finally. I was using widgets devcast as a manual, but
 it looks like since changeset 437 template cannot be assigned to a
 widget instance, it can only be declared as a class variable (and
 processed in __classinit__).
 Never mind.

I think that logic has always been in __classinit__ (for better or
worse) and that you can override the template *by name* if you want...

SomeWidget(template=foo.bar.baz)

Kevin

[TurboGears] Re: widget - dynamically contruct template string on __init__

[Ksenia Marasanova]

2006/1/7, Ksenia Marasanova [EMAIL PROTECTED]:
 Hey,

 I am trying to construct template property of a widget based on widget
 parameters, in __init__ method:

 class MyWidget(Widget):
 def __init__(self, *args, **kwargs):
 # just use textarea template for testing
 kwargs['template'] = 
 div xmlns:py=http://purl.org/kid/ns#; py:strip=True
 textarea name=${widget.name} id=${widget.name}
 class=textarea_field
 py:attrs=widget.attrs${widget_value}/textarea
span class=field_error
 py:if=widget_error${str(widget_error)}/span
 /div
super(MyWidget, self).__init__(*args, **kwargs)

 But it doesn't work, here is the end of the traceback that looks relevant:
   File [...]/turbogears/widgets/base.py, line 129, in insert
 self.template)
   File [...]/turbogears/view.py, line 61, in transform
 engine, template = _choose_engine(template)
   File [...]/turbogears/view.py, line 32, in _choose_engine
 raise KeyError, \
 KeyError: 'Template engine div xmlns is not installed'

Okay, I see it finally. I was using widgets devcast as a manual, but
it looks like since changeset 437 template cannot be assigned to a
widget instance, it can only be declared as a class variable (and
processed in __classinit__).
Never mind.

--
Ksenia