当我开始遇到此问题时，我在数据库模型中添加了一个完全不相关的字段
Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/admin/backend/network/add/
Django Version: 2.0.6
Python Version: 3.6.5
Installed Applications:
['backend.apps.BackendConfig',
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware']
Template error:
In template C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\contrib\admin\templates\admin\includes\fieldset.html, error at line 19
'str' object has no attribute 'utcoffset'
9 : {% for field in line %}
10 : <div{% if not line.fields|length_is:'1' %} class="field-box{% if field.field.name %} field-{{ field.field.name }}{% endif %}{% if not field.is_readonly and field.errors %} errors{% endif %}{% if field.field.is_hidden %} hidden{% endif %}"{% elif field.is_checkbox %} class="checkbox-row"{% endif %}>
11 : {% if not line.fields|length_is:'1' and not field.is_readonly %}{{ field.errors }}{% endif %}
12 : {% if field.is_checkbox %}
13 : {{ field.field }}{{ field.label_tag }}
14 : {% else %}
15 : {{ field.label_tag }}
16 : {% if field.is_readonly %}
17 : <div class="readonly">{{ field.contents }}</div>
18 : {% else %}
19 : {{ field.field }}
20 : {% endif %}
21 : {% endif %}
22 : {% if field.field.help_text %}
23 : <div class="help">{{ field.field.help_text|safe }}</div>
24 : {% endif %}
25 : </div>
26 : {% endfor %}
27 : </div>
28 : {% endfor %}
29 : </fieldset>
Traceback:
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\core\handlers\exception.py" in inner
35. response = get_response(request)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\core\handlers\base.py" in _get_response
158. response = self.process_exception_by_middleware(e, request)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\core\handlers\base.py" in _get_response
156. response = response.render()
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\response.py" in render
106. self.content = self.rendered_content
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\response.py" in rendered_content
83. content = template.render(context, self._request)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\backends\django.py" in render
61. return self.template.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
175. return self._render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in _render
167. return self.nodelist.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
943. bit = node.render_annotated(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\loader_tags.py" in render
155. return compiled_parent._render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in _render
167. return self.nodelist.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
943. bit = node.render_annotated(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\loader_tags.py" in render
155. return compiled_parent._render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in _render
167. return self.nodelist.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
943. bit = node.render_annotated(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\loader_tags.py" in render
67. result = block.nodelist.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
943. bit = node.render_annotated(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\loader_tags.py" in render
67. result = block.nodelist.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
943. bit = node.render_annotated(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\defaulttags.py" in render
211. nodelist.append(node.render_annotated(context))
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\loader_tags.py" in render
194. return template.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
177. return self._render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in _render
167. return self.nodelist.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
943. bit = node.render_annotated(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\defaulttags.py" in render
211. nodelist.append(node.render_annotated(context))
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\defaulttags.py" in render
211. nodelist.append(node.render_annotated(context))
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\defaulttags.py" in render
314. return nodelist.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
943. bit = node.render_annotated(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\defaulttags.py" in render
314. return nodelist.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
943. bit = node.render_annotated(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_annotated
910. return self.render(context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render
999. return render_value_in_context(output, context)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\template\base.py" in render_value_in_context
978. value = str(value)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\utils\html.py" in <lambda>
380. klass.__str__ = lambda self: mark_safe(klass_str(self))
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\forms\boundfield.py" in __str__
36. return self.as_widget()
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\forms\boundfield.py" in as_widget
118. **kwargs
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\forms\widgets.py" in render
234. context = self.get_context(name, value, attrs)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\contrib\admin\widgets.py" in get_context
104. context = super().get_context(name, value, attrs)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\forms\widgets.py" in get_context
808. value = self.decompress(value)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\forms\widgets.py" in decompress
896. value = to_current_timezone(value)
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\forms\utils.py" in to_current_timezone
176. if settings.USE_TZ and value is not None and timezone.is_aware(value):
File "C:\Users\woode\Documents\RIoT Suite\riot-portal\env\lib\site-packages\django\utils\timezone.py" in is_aware
247. return value.utcoffset() is not None
Exception Type: AttributeError at /admin/backend/network/add/
Exception Value: 'str' object has no attribute 'utcoffset'
我可以查看我的页面以及所有管理面板，除了出现错误的添加页面之外，其他用户和组模型都可以正常工作。有人修复吗？我真的只是用这个把头撞在桌子上。
答案 0 :(得分：0)
我解决了！ Django在其页面之一上并在源代码中本身推荐'django.util.timezone.now'，但这是造成此问题的原因，我只是将其更改为datetime.now()很奇怪的问题...它与django一起工作了一段时间时区。