UnicodeEncodeError：'ascii'編碼解碼器無法在位置35編碼字符u'\ xc5'：序號不在範圍內（128）

Question

我目前使用Django-countries獲取表單字段的ISO國家/地區列表。它顯示沒有在我的網站的錯誤，但Django的管理站點它會導致上述錯誤由於非ASCII國名的存在：

Unicode error hint: The string that could not be encoded/decoded was: itan Åland

我讀過類似的問題可以用encode('utf-8')屬性來解決，但是如果不需要聯繫Django Admin本身，這似乎不是很可行。如果有人能解決這個問題，我將不勝感激。

Models.py（消息）：

 
    from __future__ import unicode_literals 
    from django.db import models 
    from auth.models import User 
    from tourlisting.models import Tour 

    class Itinerary(models.Model): 
     start_date = models.DateField() 
     end_date = models.DateField() 

     def __str__(self): 
      return "Itinerary " + str(self.id) 

    class TourActivity(models.Model): 
     start_time = models.DateTimeField() 
     end_time = models.DateTimeField() 
     description = models.CharField(max_length=500, default='') 
     location = models.CharField(max_length=200) 
     itinerary = models.ForeignKey(Itinerary) 

    class ThreadManager(models.Manager): 
     def create_thread(self, tour, itinerary, traveller): 
      thread = self.create(tour=tour, itinerary=itinerary, traveller=traveller) 
      return thread 

    class Thread(models.Model): 
     tour = models.ForeignKey(Tour) 
     itinerary = models.ForeignKey(Itinerary, null=True) 
     traveller = models.ForeignKey(User) 
     objects = ThreadManager() 

     def __str__(self): 
      return "Thread " + str(self.id) 

    class Message(models.Model): 
     message = models.TextField() 
     sender = models.ForeignKey(User, related_name='sent_messages') 
     thread = models.ForeignKey(Thread) 
     time_sent = models.DateTimeField(auto_now_add=True) 
     time_read = models.DateTimeField(null=True, blank=True) 

Models.py（tourlisting）：

 
    from __future__ import unicode_literals 
    from django.db import models 
    from auth.models import UserProfile, User 
    from djmoney.models.fields import MoneyField 
    from django.utils import timezone 
    from django_countries.fields import CountryField 
    import datetime 

    class Category(models.Model): 
     name = models.CharField(max_length=100, unique=True) 
     def __str__(self): 
      return self.name 

    class Tour(models.Model): 
     tour_name = models.CharField(max_length=100, default='') 
     tour_desc = models.CharField('Tour Description', max_length=10000, default='') 
     tour_guide = models.ForeignKey(UserProfile) 
     tour_length = models.IntegerField('Tour length (days)', default = 3) 
     country = CountryField(default='', max_length=100) 
     city = models.CharField(max_length=1000, default='') 
     ppl_min = models.IntegerField('Minimum no. of travellers', default=1) 
     ppl_max = models.IntegerField('Maximum no. if travellers', default=10) 
     price = MoneyField(max_digits=6,decimal_places=2, default_currency='USD', default=50) 
     category = models.ForeignKey(Category) 
     pub_date = models.DateField('date published', auto_now_add=True) 
     active = models.BooleanField(default=True) 
     deleted = models.BooleanField(default=False) 
     def __str__(self): 
      return "{0} by {1}".format(self.tour_name, self.tour_guide) 
     def was_listed_recently(self): 
      return self.pub_date >= timezone.now() - datetime.timedelta(days=7) 

堆棧跟蹤：

 

    Environment: 


    Request Method: GET 
    Request URL: http://localhost:8000/admin/messaging/thread/2/change/ 

    Django Version: 1.9.2 
    Python Version: 2.7.10 
    Installed Applications: 
    ('django.contrib.auth', 
    'django.contrib.contenttypes', 
    'django.contrib.sessions', 
    'django.contrib.sites', 
    'django.contrib.messages', 
    'django.contrib.admin', 
    'django.contrib.staticfiles', 
    'messaging', 
    'crispy_forms', 
    'djmoney', 
    'django_countries', 
    'haystack', 
    'pysolr', 
    'django_tables2', 
    'phonenumber_field', 
    'django_extensions') 
    Installed Middleware: 
    ('django.contrib.sessions.middleware.SessionMiddleware', 
    'django.middleware.common.CommonMiddleware', 
    'django.middleware.csrf.CsrfViewMiddleware', 
    'django.contrib.auth.middleware.AuthenticationMiddleware', 
    'django.contrib.auth.middleware.SessionAuthenticationMiddleware', 
    'django.contrib.messages.middleware.MessageMiddleware', 
    'django.middleware.clickjacking.XFrameOptionsMiddleware', 
    'django.middleware.security.SecurityMiddleware') 


    Template error: 
    In template /usr/local/lib/python2.7/dist-packages/django/contrib/admin/templates/admin/change_form.html, error at line 33 
     ascii 23 : {% endblock %} 
     24 : {% endif %} 
     25 : 
     26 : {% block content %} 
     27 : {% block object-tools %} 
     28 : {% if change %}{% if not is_popup %} 
     29 : 
     30 :  {% block object-tools-items %} 
     31 :  

     32 :   {% url opts|admin_urlname:'history' original.pk|admin_urlquote as history_url %} 
     33 :   {% trans "History" %} 
     34 : 
 
     35 :  {% if has_absolute_url %}
{% trans "View on site" %}
{% endif %} 
     36 :  {% endblock %} 
     37 : 
     38 : {% endif %}{% endif %} 
     39 : {% endblock %} 
     40 : {% csrf_token %}{% block form_top %}{% endblock %} 
     41 : 
     42 : {% if is_popup %}{% endif %} 
     43 : {% if to_field %}{% endif %} 


    Traceback: 

    File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response 
     174.      response = self.process_exception_by_middleware(e, request) 

    File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response 
     172.      response = response.render() 

    File "/usr/local/lib/python2.7/dist-packages/django/template/response.py" in render 
     160.    self.content = self.rendered_content 

    File "/usr/local/lib/python2.7/dist-packages/django/template/response.py" in rendered_content 
     137.   content = template.render(context, self._request) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/backends/django.py" in render 
     95.    return self.template.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     206.      return self._render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render 
     197.   return self.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     992.     bit = node.render_annotated(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render 
     173.   return compiled_parent._render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render 
     197.   return self.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     992.     bit = node.render_annotated(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render 
     173.   return compiled_parent._render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render 
     197.   return self.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     992.     bit = node.render_annotated(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render 
     69.     result = block.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     992.     bit = node.render_annotated(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render 
     69.     result = block.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     992.     bit = node.render_annotated(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py" in render 
     220.      nodelist.append(node.render_annotated(context)) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/loader_tags.py" in render 
     209.     return template.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     208.     return self._render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in _render 
     197.   return self.nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     992.     bit = node.render_annotated(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py" in render 
     220.      nodelist.append(node.render_annotated(context)) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py" in render 
     220.      nodelist.append(node.render_annotated(context)) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py" in render 
     326.     return nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     992.     bit = node.render_annotated(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/defaulttags.py" in render 
     326.     return nodelist.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     992.     bit = node.render_annotated(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_annotated 
     959.    return self.render(context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render 
     1049.   return render_value_in_context(output, context) 

    File "/usr/local/lib/python2.7/dist-packages/django/template/base.py" in render_value_in_context 
     1026.  value = force_text(value) 

    File "/usr/local/lib/python2.7/dist-packages/django/utils/encoding.py" in force_text 
     78.     s = six.text_type(s) 

    File "/usr/local/lib/python2.7/dist-packages/django/utils/html.py" in 
     381.   klass.__unicode__ = lambda self: mark_safe(klass_unicode(self)) 

    File "/usr/local/lib/python2.7/dist-packages/django/forms/boundfield.py" in __str__ 
     43.   return self.as_widget() 

    File "/usr/local/lib/python2.7/dist-packages/django/forms/boundfield.py" in as_widget 
     101.   return force_text(widget.render(name, self.value(), attrs=attrs)) 

    File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/widgets.py" in render 
     291.    'widget': self.widget.render(name, value, *args, **kwargs), 

    File "/usr/local/lib/python2.7/dist-packages/django/forms/widgets.py" in render 
     528.   options = self.render_options(choices, [value]) 

    File "/usr/local/lib/python2.7/dist-packages/django/forms/widgets.py" in render_options 
     554.   for option_value, option_label in chain(self.choices, choices): 

    File "/usr/local/lib/python2.7/dist-packages/django/forms/models.py" in __iter__ 
     1110.    yield self.choice(obj) 

    File "/usr/local/lib/python2.7/dist-packages/django/forms/models.py" in choice 
     1117.   return (self.field.prepare_value(obj), self.field.label_from_instance(obj)) 

    File "/usr/local/lib/python2.7/dist-packages/django/forms/models.py" in label_from_instance 
     1180.   return smart_text(obj) 

    File "/usr/local/lib/python2.7/dist-packages/django/utils/encoding.py" in smart_text 
     42.  return force_text(s, encoding, strings_only, errors) 

    File "/usr/local/lib/python2.7/dist-packages/django/utils/encoding.py" in force_text 
     80.     s = six.text_type(bytes(s), encoding, errors) 

    Exception Type: UnicodeEncodeError at /admin/messaging/thread/2/change/ 
    Exception Value: 'ascii' codec can't encode character u'\xc5' in position 35: ordinal not in range(128) 

Answer 1

添加到您的模型：

@python_2_unicode_compatible 
class Thread(models.Model): 
    ... 

和更新這個類的STR方法：

class Tour(models.Model): 
    ... 
    def __str__(self): 
     return "{0} by {1}".format(self.tour_name.encode('utf8'), self.tour_guide) 

您還需要確保用戶配置的表示被編碼爲utf8

Answer 2

試試這個：（U「」從unicode字符串）我認爲這可能是問題

def __str__(self): 
    return u"{0} by {1}".format(self.tour_name, self.tour_guide)