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我有一个Profile模型，它具有用户模型的外键。我创建了一个'编辑个人资料'视图，允许用户更新个人资料信息。其中一个领域是一个图像领域（托管与cloudinary）。由于将此字段更改为Cloudinary字段，我似乎在配置文件没有上载图像时，新创建的配置文件对象出现问题。但是，如果用户有一个配置文件图像我可以加载'edit_profile'视图没有问题。“NoneType”类型的对象没有len（） - 编辑表格
我缩小了它的形象领域，因为当我删除领域，它的作品没有问题。尽管回溯不是很有帮助。
这是我的edit_profile视图。
@login_required
def edit_profile(request):
if request.method == 'POST':
user_form = UserForm(request.POST, request.FILES, instance=request.user)
profile_form = ProfileForm(request.POST,request.FILES, instance=request.user.profile)
if user_form.is_valid() and profile_form.is_valid():
user_form.save()
profile_form.save()
messages.success(request, "Successfully Updated")
return redirect('profile:edit_profile')
else:
messages.success(request, "Please correct the below info")
else:
user_form = UserForm(instance=request.user)
profile_form = ProfileForm(instance=request.user.profile)
return render(request, 'profile/edit.html', {
'user_form': user_form,
'profile_form': profile_form
})
我有两种形式，一种是允许用户更新名字，姓氏和电子邮件的用户模型。然后是配置文件表单，它允许更新其他字段。
我想我需要添加一些逻辑来检查图像字段是否设置为空！？我没有在场上设置null = True设置，所以我有点困惑。
这是我的个人资料型号：
class Profile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
image = CloudinaryField('image', default="thumbnail_mqe6ne")
height = models.DecimalField(help_text="CM", max_digits=8, decimal_places=2, validators=[
MinValueValidator(20),
MaxValueValidator(600),
])
gender_option = (
('Male', 'Male'),
('Female', 'Female'),
)
profile_status = (
('Public', 'Public'),
('Private', 'Private'),
)
birth_date = models.DateField(blank=True, default=datetime.date.today, verbose_name="Date of Birth")
gender = models.CharField(choices=gender_option, blank=True, max_length=10)
bio = models.TextField(max_length=300, blank=True)
location = models.CharField(max_length=30, blank=True)
status = models.CharField(default="Public", max_length=10, choices=profile_status)
def __unicode__(self):
return unicode(self.user.username)
def get_absolute_url(self):
return reverse("profile:profile_home", kwargs={"id": self.id})
//回溯
Environment:
Request Method: GET
Request URL: http://localhost:8000/profile/edit/
Django Version: 1.10.4
Python Version: 2.7.6
Installed Applications:
['django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'django.contrib.sites',
'stats',
'home',
'sorl.thumbnail',
'storages',
'cloudinary',
'debug_toolbar',
'django_cleanup',
'allauth',
'allauth.account',
'allauth.socialaccount',
'allauth.socialaccount.providers.facebook']
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',
'whitenoise.middleware.WhiteNoiseMiddleware',
'debug_toolbar.middleware.DebugToolbarMiddleware']
Template error:
In template /vagrant/bodymakeover/templates/profile/edit.html, error at line 27
object of type 'NoneType' has no len() 17 : {% comment %}{{ profile.first_name }}<br>
18 : {{ profile.last_name }}<br>
19 : {{ profile.bio }}<br>
20 : {{ profile.location }}<br>
21 : {{ profile.birthdate }}<br>{% endcomment %}
22 :
23 :
24 : <form method="post" enctype='multipart/form-data'>
25 : {% csrf_token %}
26 : {{ user_form.as_p }}
27 : {{ profile_form.as_p }}
28 : <button class="btn btn-primary" type="submit">Save changes</button>
29 : </form>
30 :
31 :
32 : </div>
33 :
34 :
35 : {% endblock %}
Traceback:
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/core/handlers/exception.py" in inner
39. response = get_response(request)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
187. response = self.process_exception_by_middleware(e, request)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/core/handlers/base.py" in _get_response
185. response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/contrib/auth/decorators.py" in _wrapped_view
23. return view_func(request, *args, **kwargs)
File "/vagrant/bodymakeover/home/views.py" in edit_profile
54. 'profile_form': profile_form
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/shortcuts.py" in render
30. content = loader.render_to_string(template_name, context, request, using=using)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/loader.py" in render_to_string
68. return template.render(context, request)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/backends/django.py" in render
66. return self.template.render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render
208. return self._render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/test/utils.py" in instrumented_test_render
94. return self.nodelist.render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
174. return compiled_parent._render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/test/utils.py" in instrumented_test_render
94. return self.nodelist.render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
70. result = block.nodelist.render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/loader_tags.py" in render
70. result = block.nodelist.render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render
994. bit = node.render_annotated(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render_annotated
961. return self.render(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in render
1044. output = self.filter_expression.resolve(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in resolve
711. obj = self.var.resolve(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in resolve
852. value = self._resolve_lookup(context)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/template/base.py" in _resolve_lookup
915. current = current()
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/forms/forms.py" in as_p
289. errors_on_separate_row=True)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/forms/forms.py" in _html_output
226. 'field': six.text_type(bf),
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/utils/html.py" in <lambda>
382. klass.__unicode__ = lambda self: mark_safe(klass_unicode(self))
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/forms/boundfield.py" in __str__
43. return self.as_widget()
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/forms/boundfield.py" in as_widget
89. attrs = self.build_widget_attrs(attrs, widget)
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/forms/boundfield.py" in build_widget_attrs
238. if widget.use_required_attribute(self.initial) and self.field.required and self.form.use_required_attribute:
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/django/forms/widgets.py" in use_required_attribute
441. return super(ClearableFileInput, self).use_required_attribute(initial) and not initial
File "/vagrant/bodymakeover/venv/local/lib/python2.7/site-packages/cloudinary/__init__.py" in __len__
129. return len(self.public_id)
Exception Type: TypeError at /profile/edit/
Exception Value: object of type 'NoneType' has no len()
任何帮助，因为我敲我的头靠在墙上大加赞赏。有希望的东西是明显的:)
你能给出更详细的追溯？ – Rohanil
嘿Rohanil，我添加了追踪的最后部分，它似乎绊倒。够了吗？谢谢回复。 – JDavies
不，这还不够。为什么你不能粘贴整个事情？ –