我在使用Django的表单上遇到Unicode输入问题:
UnicodeEncodeError at /
'ascii' codec can't encode character u'\xe4' in position 7: ordinal not in range(128)
这种情况发生在gunicorn上,以及在调试模式下运行Django。我的form.py启用了unicode:
#!/usr/bin/python
# -*- coding: utf-8 -*-
from django import forms
from django.core.mail import send_mail
from django.core.mail import EmailMessage
import datetime
class RTForm(forms.Form):
# ...
institution_station = forms.CharField(max_length=75, label=u"Institute/Station*")
# ...
基于此视图创建视图,目的是根据输入建立电子邮件:
class RTview(FormView):
template_name = 'rt-form.html'
form_class = RTForm
success_url = '/thanks/'
def form_valid(self, form):
# This method is called when valid form data has been POSTed.
# It should return an HttpResponse.
form.send_email()
return super(RTview, self).form_valid(form)
send_email函数看起来像这样:
def send_email(self):
email = EmailMessage(
subject='New item',
#body='Here is the message.',
from_email=self.cleaned_data['email'],
to=['foo@example.com'])
# The dict fields of the form contains all defined fields incl.
# their labels etc. So taking this we can match and check for the
# validated data to fullfill our task.
values = []
for i in self.fields.iteritems():
values.append(u"%s: \t%s" % (self[i[0]].label, str(self.cleaned_data[i[0]]) ) )
email.body = "\n".join(values)
email.send()
将unicode放入institution_station
时,应用程序会响应上述错误,在values.append()
的{{1}}失败。
回溯看起来像:
send_email
我可能错过了什么?
答案 0 :(得分:6)
我认为这里的问题是调用str(self.cleaned_data[i[0]])
,它会从unicode值中创建一个字节串。例如,u"%s" % str(u"überwach!")
将失败,其中u"%s" % unicode(u"überwach!")
将正常工作(即使unicode
调用在这种情况下是多余的......)
修改:添加一些详细信息:str(u"überwach!")
失败并显示UnicodeEncodeError
,因为在引擎盖下,它调用u"überwach!".encode("ascii")
,但ASCII无法处理变音符号......
可悲的是,我找不到文档中描述的这个问题(str()
调用__str__
对unicode
对象,但这个__str__
是如何实现的?),但有关该主题的更多信息,请参阅Python Unicode Howto。
答案 1 :(得分:3)
您要插入的字符串不是unicode
试试这个:
values.append(u"%s: \t%s" % (unicode(self[i[0]].label), unicode(self.cleaned_data[i[0]]) ) )