终于让我找到一个解决办法:我开发了一个模板,调试标签:
from django import template
import traceback
class DebugVariable(template.Variable):
def _resolve_lookup(self, context):
current = context
for bit in self.lookups:
try: # dictionary lookup
current = current[bit]
except (TypeError, AttributeError, KeyError):
try: # attribute lookup
current = getattr(current, bit)
if callable(current):
if getattr(current, 'alters_data', False):
current = settings.TEMPLATE_STRING_IF_INVALID
else:
try: # method call (assuming no args required)
current = current()
except:
raise Exception("Template Object Method Error : %s" % traceback.format_exc())
except (TypeError, AttributeError):
try: # list-index lookup
current = current[int(bit)]
except (IndexError, # list index out of range
ValueError, # invalid literal for int()
KeyError, # current is a dict without `int(bit)` key
TypeError, # unsubscriptable object
):
raise template.VariableDoesNotExist("Failed lookup for key [%s] in %r", (bit, current)) # missing attribute
except Exception, e:
if getattr(e, 'silent_variable_failure', False):
current = settings.TEMPLATE_STRING_IF_INVALID
else:
raise
except Exception, e:
if getattr(e, 'silent_variable_failure', False):
current = settings.TEMPLATE_STRING_IF_INVALID
else:
raise
return current
class DebugVarNode(template.Node):
def __init__(self, var):
self.var = DebugVariable(var)
def render(self, context):
return self.var.resolve(context)
@register.tag('debug_var')
def do_debug_var(parser, token):
"""
raise every variable rendering exception, TypeError included (usually hidden by django)
Syntax::
{% debug_var obj.my_method %} instead of {{ obj.my_method }}
"""
bits = token.contents.split()
if len(bits) != 2:
raise template.TemplateSyntaxError("'%s' tag takes one argument" % bits[0])
return DebugVarNode(bits[1])
所以现在我的模板我刚刚更换
{{ my_object.my_method }} by {% debug_var my_object.my_method %}
我有完全相同的问题...我会认为这是一个在Django本身的错误... – 2012-01-13 13:07:54