django-machina 中的 NoReverseMatch，如果论坛的标题包含 Unicode 字符

Question

安装成功，论坛和主题都很好，但是有一个问题 - 如果我 post 一个带有 Unicode 字符的主题（例如俄语），NoReverseMatch:

NoReverseMatch at /forum/
Reverse for 'forum' with arguments '('', 6)' and keyword arguments '{}' not found. 1 pattern(s) tried: ['forum/forum/(?P<slug>[\w-]+)-(?P<pk>\d+)/$']

我理解是编码的问题。问题是我只是不知道哪个文件以及如何编辑以更正错误。比如需要把prsto #-*-编码：utf-8-*-。但是在哪里呢？

Request Method: GET
Request URL: http://127.0.0.1:8000/forum/

Django Version: 1.10.2
Python Version: 3.4.4
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'main_site',
 'ckeditor',
 'ckeditor_uploader',
 'mptt',
 'haystack',
 'widget_tweaks',
 'machina',
 'machina.apps.forum',
 'machina.apps.forum_conversation',
 'machina.apps.forum_conversation.forum_attachments',
 'machina.apps.forum_conversation.forum_polls',
 'machina.apps.forum_feeds',
 'machina.apps.forum_moderation',
 'machina.apps.forum_search',
 'machina.apps.forum_tracking',
 'machina.apps.forum_member',
 'machina.apps.forum_permission']
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',
 'machina.apps.forum_permission.middleware.ForumPermissionMiddleware']


Template error:
In template C:\Python34\lib\site-packages\machina\templates\machina\forum\index.html, error at line 0
   Reverse for 'forum' with arguments '('', 7)' and keyword arguments '{}' not found. 1 pattern(s) tried: ['forum/forum/(?P<slug>[\w-]+)-(?P<pk>\d+)/$']   1 : {% extends 'board_base.html' %}
   2 : {% load i18n %}
   3 : {% load mptt_tags %}
   4 : {% load forum_tags %}
   5 : 
   6 : {% block sub_title %}{% trans "Index" %}{% endblock sub_title %}
   7 : 
   8 : {% block content %}
   9 :  <br />
   10 :     <div class="row">


Traceback:

File "C:\Python34\lib\site-packages\django\core\handlers\exception.py" in inner
  39.             response = get_response(request)

File "C:\Python34\lib\site-packages\django\core\handlers\base.py" in _get_response
  217.                 response = self.process_exception_by_middleware(e, request)

File "C:\Python34\lib\site-packages\django\core\handlers\base.py" in _get_response
  215.                 response = response.render()

File "C:\Python34\lib\site-packages\django\template\response.py" in render
  109.             self.content = self.rendered_content

File "C:\Python34\lib\site-packages\django\template\response.py" in rendered_content
  86.         content = template.render(context, self._request)

File "C:\Python34\lib\site-packages\django\template\backends\django.py" in render
  66.             return self.template.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  208.                     return self._render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in _render
  199.         return self.nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\loader_tags.py" in render
  174.         return compiled_parent._render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in _render
  199.         return self.nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\loader_tags.py" in render
  174.         return compiled_parent._render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in _render
  199.         return self.nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\loader_tags.py" in render
  70.                 result = block.nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\loader_tags.py" in render
  70.                 result = block.nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\library.py" in render
  245.         return t.render(new_context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  210.                 return self._render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in _render
  199.         return self.nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\defaulttags.py" in render
  315.                 return nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\mptt\templatetags\mptt_tags.py" in render
  260.         bits = [self._render_node(context, node) for node in roots]

File "C:\Python34\lib\site-packages\mptt\templatetags\mptt_tags.py" in <listcomp>
  260.         bits = [self._render_node(context, node) for node in roots]

File "C:\Python34\lib\site-packages\mptt\templatetags\mptt_tags.py" in _render_node
  253.         rendered = self.template_nodes.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\defaulttags.py" in render
  315.                 return nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\defaulttags.py" in render
  315.                 return nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\defaulttags.py" in render
  315.                 return nodelist.render(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render
  994.                 bit = node.render_annotated(context)

File "C:\Python34\lib\site-packages\django\template\base.py" in render_annotated
  961.             return self.render(context)

File "C:\Python34\lib\site-packages\django\template\defaulttags.py" in render
  439.             url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app)

File "C:\Python34\lib\site-packages\django\urls\base.py" in reverse
  91.     return force_text(iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)))

File "C:\Python34\lib\site-packages\django\urls\resolvers.py" in _reverse_with_prefix
  392.             (lookup_view_s, args, kwargs, len(patterns), patterns)

Exception Type: NoReverseMatch at /forum/
Exception Value: Reverse for 'forum' with arguments '('', 7)' and keyword arguments '{}' not found. 1 pattern(s) tried: ['forum/forum/(?P<slug>[\w-]+)-(?P<pk>\d+)/$']

Answer 1

这是 django-machina 中的一个 bug。对于论坛名称中的 Unicode 符号，会生成空导致 NoReverseMatch 异常的 slug 字段。

看这里的代码/machina/apps/forum/abstract_models.py

class AbstractForum(MPTTModel, DatedModel):
...
    def save(self, *args, **kwargs):
        ...
        # Update the slug field
        self.slug = slugify(force_text(self.name))
        ...

这是 slugify 的定义：

def slugify(value, allow_unicode=False):
    ...

快速修复。 如下所示更新 save() 方法实现，并在管理员中重新保存所有论坛。

self.slug = slugify(force_text(self.name), allow_unicode=True)

此修复程序已经过测试。

django-machina 中的 NoReverseMatch，如果论坛的标题包含 Unicode 字符

NoReverseMatch in django-machina, if forum's title contains Unicode characters

django

django-mptt