#2443: Exception "TypeError: 'NoneType' object is not callable" on render
widgets
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Reporter: xaka | Owner:
Type: defect | Status: new
Priority: normal | Milestone: __unclassified__
Component: TurboGears | Version: 1.0.9
Severity: normal | Keywords:
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{{{
import turbogears as tg
tg.view.load_engines()
class MyWidget(tg.widgets.Widget):
template = """
<div>hello world</div>
"""
class Module1(object):
class widget(MyWidget):
pass
m1 = Module1()
w1 = m1.widget()
class Module2(object):
class widget(MyWidget):
pass
m2 = Module2()
w2 = m2.widget()
w1.render()
w2.render()
}}}
Problem in turbogears.widgets.meta module. To generate template's module
name it
uses the following algo:
{{{
modname = "%s.%s" % (cls.__module__.__name__, cls.__name__)
}}}
In example above we have 2 different classes (Module1.widget == class1 and
Module2.wiget == class2) with same names and living in same module i.e.
modname for class1 == modname for class2. As result when we initiate
class2 with existing modname in sys.modules it destroys prev template's
module for class1 and during rendering we get the exception.
You can write your own fix for that issue. Attached patch is just "way to
fix".
--
Ticket URL: <http://trac.turbogears.org/ticket/2443>
TurboGears <http://www.turbogears.org/>
TurboGears front-to-back web development
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