最近在學(xué)習(xí)Django，跟著做一個(gè)Django論壇從搭建到部署，教程鏈接也貼上：【第一部分-django論壇從搭建到部署】一個(gè)完整Django入門指南-蒼云橫渡，做到第三部分時(shí)候遇到一個(gè)問題，困擾了我很久。經(jīng)查閱后仍是無果，官方文檔也看了依然沒有解決問題，后來突然發(fā)現(xiàn)了問題，再看看報(bào)錯(cuò)的情況，確實(shí)就是自己寫的時(shí)候?qū)戝e(cuò)了。先把錯(cuò)誤情況貼上：

Internal Server Error: /boards/1/ Traceback (most recent call last): File "D:\IDE\Python\Anaconda\lib\site-packages\django\core\handlers\ex ception.py", line 34, in inner response = get_response(request) File "D:\IDE\Python\Anaconda\lib\site-packages\django\core\handlers\ba se.py", line 126, in _get_response response = self.process_exception_by_middleware(e, request) File "D:\IDE\Python\Anaconda\lib\site-packages\django\core\handlers\ba se.py", line 124, in _get_response response = wrapped_callback(request, *callback_args, **callback_kwar gs) File "D:\IDE\pycharm\PyCharm Community Edition 2018.1.2\DjangoProjects \myproject\boards\views.py", line 33, in board_topics return render(request, 'topics.html', {'board': board}) File "D:\IDE\Python\Anaconda\lib\site-packages\django\shortcuts.py", l ine 36, in render content = loader.render_to_string(template_name, context, request, u sing=using) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\loader. py", line 62, in render_to_string return template.render(context, request) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\backend s\django.py", line 61, in render return self.template.render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 171, in render return self._render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 163, in _render return self.nodelist.render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 937, in render bit = node.render_annotated(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 904, in render_annotated return self.render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\loader_ tags.py", line 150, in render return compiled_parent._render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 163, in _render return self.nodelist.render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 937, in render bit = node.render_annotated(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 904, in render_annotated return self.render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\loader_ tags.py", line 62, in render result = block.nodelist.render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 937, in render bit = node.render_annotated(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 904, in render_annotated return self.render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\loader_ tags.py", line 62, in render result = block.nodelist.render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 937, in render bit = node.render_annotated(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\base.py ", line 904, in render_annotated return self.render(context) File "D:\IDE\Python\Anaconda\lib\site-packages\django\template\default tags.py", line 442, in render url = reverse(view_name, args=args, kwargs=kwargs, current_app=curre nt_app) File "D:\IDE\Python\Anaconda\lib\site-packages\django\urls\base.py", l ine 90, in reverse return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs)) File "D:\IDE\Python\Anaconda\lib\site-packages\django\urls\resolvers.p y", line 622, in _reverse_with_prefix raise NoReverseMatch(msg) django.urls.exceptions.NoReverseMatch: Reverse for 'new_topic' not found . 'new_topic' is not a valid view function or pattern name. [24/Nov/2018 22:54:00] "GET /boards/1/ HTTP/1.1" 500 169427

看起來有點(diǎn)亂，其實(shí)關(guān)鍵信息就是最后一句話：

Reverse for 'new_topic' not found . 'new_topic' is not a valid view function or pattern name.?

意思就是new_topic在反析的時(shí)候沒有被找到，'new_topic' 不是一個(gè)有效的視圖方法或者模式名。

瀏覽器報(bào)的錯(cuò)也貼上:

urls.py:

view.py:

我注意到其實(shí)是urls.py文件中命名空間寫錯(cuò)了：

實(shí)際上我在view.py文件中定義的方法是new_topic，HTML模板命名也是new_topic.html，所以多加了一個(gè)s導(dǎo)致了錯(cuò)誤。以后還是需要更加細(xì)心。