Python 类型错误无法连接';str';和';错误列表';物体
我的代码 回溯Python 类型错误无法连接';str';和';错误列表';物体,python,django,python-2.7,Python,Django,Python 2.7,我的代码 回溯 def is_valid(self): form = super(UserCreateForm, self).is_valid() for f, error in self.errors.iteritems(): if f != '__all_': self.fields[f].widget.attrs.update({'class': 'error', 'value': strip_tags(error)}) re
def is_valid(self):
form = super(UserCreateForm, self).is_valid()
for f, error in self.errors.iteritems():
if f != '__all_':
self.fields[f].widget.attrs.update({'class': 'error', 'value': strip_tags(error)})
return form
Django是一个字典,键是字段名,值是表示错误消息的Unicode字符串的列表。错误消息存储在列表中,因为一个字段可以有多个错误消息:
Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
114. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/saurabh/Desktop/project/ribbit/ribbit_app/views.py" in signup
48. if user_form.is_valid():
File "/home/saurabh/Desktop/project/ribbit/ribbit_app/forms.py" in is_valid
18. self.fields[f].widget.attrs.update({'class': 'error', 'value': strip_tags(error)})
File "/usr/local/lib/python2.7/dist-packages/django/utils/functional.py" in wrapper
203. return func(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/utils/html.py" in strip_tags
134. s.feed(value)
File "/usr/lib/python2.7/HTMLParser.py" in feed
113. self.rawdata = self.rawdata + data
Exception Type: TypeError at /signup
Exception Value: cannot concatenate 'str' and 'ErrorList' objects
并将值作为string
获取,但将列表
对象传递给它:
>>> f.errors
{'sender': ['Enter a valid email address.'], 'subject': ['This field is required.']}
因此,您需要更改这一行:
def is_valid(self):
form = super(UserCreateForm, self).is_valid()
for f, error in self.errors.iteritems():
# Here `error` is a list of errors for `f` field. (may be one or more)
if f != '__all_':
self.fields[f].widget.attrs.update({'class': 'error', 'value': strip_tags(error)})
return form
收件人:(对于仅获取第一个错误)
或:(对于所有错误)
这是什么背景?
self.fields[f].widget.attrs.update({'class': 'error', 'value': strip_tags(error)})
self.fields[f].widget.attrs.update({'class': 'error', 'value': strip_tags(error[0])})
self.fields[f].widget.attrs.update({'class': 'error', 'value': strip_tags(", ".join(error))})