Python Django Admin:TypeError:\uuuuu str\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu_Python_Django

Python Django Admin:TypeError:\uuuuu str\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu

python django

Python Django Admin:TypeError:\uuuuu str\uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu,python,django,Python,Django,我有一个正常运行的Django站点和一个正常运行的admin站点，但当我尝试使用admin站点从模型“Article”创建新对象时除外。当我尝试创建新的“Article”时，我遇到以下错误： TypeError at /admin/blog/article/add/ __str__ returned non-string (type FieldFile) Exception Type: TypeError Exception Value: __str__ returned non

我有一个正常运行的Django站点和一个正常运行的admin站点，但当我尝试使用admin站点从模型“Article”创建新对象时除外。当我尝试创建新的“Article”时，我遇到以下错误：

TypeError at /admin/blog/article/add/

__str__ returned non-string (type FieldFile)
Exception Type:     TypeError
Exception Value:    __str__ returned non-string (type FieldFile)
Exception Location:     /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/utils/encoding.py in force_text, line 90

奇怪的是，今天早上它还在工作。我试图安装django markdown，但我开始出现这个错误。我无法让它工作，所以我卸载了django markdown，并将所有代码恢复为原始代码（以前的功能），并进行了相应的迁移

但我还是发现了错误

以下是回溯和渲染错误：

Error during template rendering

In template /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/contrib/admin/templates/admin/includes/fieldset.html, error at line 19
__str__ returned non-string (type FieldFile)
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                              <p>{{ field.contents }}</p>
18                          {% else %}
19  

      {{ field.field }}



20                          {% endif %}
21                      {% endif %}
22                      {% if field.field.help_text %}
23                          <p class="help">{{ field.field.help_text|safe }}</p>
24                      {% endif %}
25                  </div>
26              {% endfor %}
27          </div>
28      {% endfor %}
29  </fieldset>
Traceback Switch to copy-and-paste view

    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/core/handlers/base.py in get_response

                                    response = response.render()

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/response.py in render

                                self.content = self.rendered_content

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/response.py in rendered_content

                            content = template.render(context, self._request)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/backends/django.py in render

                            return self.template.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                        return self._render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in _render

                            return self.nodelist.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                    bit = self.render_node(node, context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/debug.py in render_node

                                return node.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/loader_tags.py in render

                            return compiled_parent._render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in _render

                            return self.nodelist.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                    bit = self.render_node(node, context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/debug.py in render_node

                                return node.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/loader_tags.py in render

                            return compiled_parent._render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in _render

                            return self.nodelist.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                    bit = self.render_node(node, context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/debug.py in render_node

                                return node.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/loader_tags.py in render

                                    result = block.nodelist.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                    bit = self.render_node(node, context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/debug.py in render_node

                                return node.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/loader_tags.py in render

                                    result = block.nodelist.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                    bit = self.render_node(node, context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/debug.py in render_node

                                return node.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/defaulttags.py in render

                                                nodelist.append(node.render(context))

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/loader_tags.py in render

                                    return template.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                    return self._render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in _render

                            return self.nodelist.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                    bit = self.render_node(node, context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/debug.py in render_node

                                return node.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/defaulttags.py in render

                                                nodelist.append(node.render(context))

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/defaulttags.py in render

                                                nodelist.append(node.render(context))

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/defaulttags.py in render

                                    return nodelist.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                    bit = self.render_node(node, context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/debug.py in render_node

                                return node.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/defaulttags.py in render

                                    return nodelist.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/base.py in render

                                    bit = self.render_node(node, context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/debug.py in render_node

                                return node.render(context)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/template/debug.py in render

                                output = force_text(output)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/utils/encoding.py in force_text

                                        s = six.text_type(s)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/utils/html.py in <lambda>

                            klass.__str__ = lambda self: mark_safe(klass_str(self))

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/forms/forms.py in __str__

                            return self.as_widget()

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/forms/forms.py in as_widget

                            return force_text(widget.render(name, self.value(), attrs=attrs))

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/contrib/admin/widgets.py in render

                                'widget': self.widget.render(name, value, *args, **kwargs),

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/forms/widgets.py in render

                            options = self.render_options(choices, value)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/forms/widgets.py in render_options

                            for option_value, option_label in chain(self.choices, choices):

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/forms/models.py in __iter__

                                    yield self.choice(obj)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/forms/models.py in choice

                            return (self.field.prepare_value(obj), self.field.label_from_instance(obj))

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/forms/models.py in label_from_instance

                            return smart_text(obj)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/utils/encoding.py in smart_text

                        return force_text(s, encoding, strings_only, errors)

         ...
    ▶ Local vars
    /home/USERNAME/webapps/APPNAME/lib/python3.4/Django-1.8.2-py3.4.egg/django/utils/encoding.py in force_text

                                        s = six.text_type(s)

         ...
    ▶ Local vars

admin.py：

from django.contrib import admin
from blog.models import Article, Tag, Author, ArticleCategory, ArticleImage

# Register your models here.
admin.site.register(Article)
admin.site.register(Author)
admin.site.register(Tag)
admin.site.register(ArticleCategory)
admin.site.register(ArticleImage)

我几乎想卸载，然后用当前的设置重新开始整个过程，但我更愿意找出我搞砸了什么，然后修复它

非常感谢您的帮助

马特

如果看不到局部变量，就很难诊断问题。某处的一个模型返回一个

字段文件

，而不是一个字符串，当它被调用为admin中的一个小部件提供选项标签时，选择我认为

检查模型上的str方法。有

文件字段的人可能是罪魁祸首。但错误是“FieldFile”而不是“FileField”。它们是一样的吗？“当您访问模型上的文件字段时，会给您一个FieldFile实例作为访问基础文件的代理”，从而修复了它。这是在我遇到django markdown安装引起的bug时发生的，所以我将其归因于此。我将string方法更改为图像标题，现在效果很好。
from django.contrib import admin
from blog.models import Article, Tag, Author, ArticleCategory, ArticleImage

# Register your models here.
admin.site.register(Article)
admin.site.register(Author)
admin.site.register(Tag)
admin.site.register(ArticleCategory)
admin.site.register(ArticleImage)