Question

我正在尝试使用Django构建一个静态站点生成器（因为它的资源非常强大），而且现在我的问题是处理Django命令，该命令应该将我的静态站点内容构建到目录中。显然我的'NoneType'对象没有属性'split'，但我不知道'NoneType'对象是什么。

(thisSite) C:\Users\Jaysp_000\thisSite\PROJECTx>python prototype.py build
Traceback (most recent call last):
  File "prototype.py", line 31, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\core\management\__init__.py",
 line 338, in execute_from_command_line
    utility.execute()
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\core\management\__init__.py",
 line 330, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\core\management\base.py", lin
e 390, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\core\management\base.py", lin
e 441, in execute
    output = self.handle(*args, **options)
  File "C:\Users\Jaysp_000\thisSite\PROJECTx\sitebuilder\management\commands\build.py", li
ne 38, in handle
    response = this_client_will.get(the_page_url)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\test\client.py", line 500, in
 get
    **extra)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\test\client.py", line 303, in
 get
    return self.generic('GET', path, secure=secure, **r)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\test\client.py", line 379, in
 generic
    return self.request(**r)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\test\client.py", line 466, in
 request
    six.reraise(*exc_info)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\utils\six.py", line 659, in r
eraise
    raise value
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\core\handlers\base.py", line
132, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\Jaysp_000\thisSite\PROJECTx\sitebuilder\views.py", line 35, in page
    return render(request, 'page.html', context)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\shortcuts.py", line 67, in re
nder
    template_name, context, request=request, using=using)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\template\loader.py", line 99,
 in render_to_string
    return template.render(context, request)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\template\backends\django.py",
 line 74, in render
    return self.template.render(context)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\template\base.py", line 208,
in render
    with context.bind_template(self):
  File "C:\Python34\Lib\contextlib.py", line 59, in __enter__
    return next(self.gen)
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\template\context.py", line 23
5, in bind_template
    updates.update(processor(self.request))
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\template\context_processors.p
y", line 56, in i18n
    context_extras['LANGUAGE_BIDI'] = translation.get_language_bidi()
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\utils\translation\__init__.py
", line 177, in get_language_bidi
    return _trans.get_language_bidi()
  File "C:\Users\Jaysp_000\thisSite\lib\site-packages\django\utils\translation\trans_real.
py", line 263, in get_language_bidi
    base_lang = get_language().split('-')[0]
AttributeError: 'NoneType' object has no attribute 'split'

似乎我的问题出在我的命令文件中，我称之为build。回溯还会调出我的views文件，该文件可以自行运行（也就是说，我的html文件可以在本地服务器上正确提供），但无论如何我都会包含它。

build.py

import os, shutil
from django.conf import settings
from django.core.management import call_command
from django.core.management.base import BaseCommand
from django.core.urlresolvers import reverse
from django.test.client import Client

def get_pages():
    for name in os.listdir(settings.STATIC_PAGES_DIRECTORY):
        if name.endswith('.html'):
            yield name[:-5]


class Command(BaseCommand):
    help = 'Build static site output.'

    def handle(self, *args, **options):
        """Request pages and build output."""
        if os.path.exists(settings.SITE_OUTPUT_DIRECTORY):
            shutil.rmtree(settings.SITE_OUTPUT_DIRECTORY)
        os.mkdir(settings.SITE_OUTPUT_DIRECTORY) 
        os.makedirs(settings.STATIC_ROOT)   
        call_command('collectstatic', interactive=False, clear=True, verbosity=0)
        this_client_will = Client()

        for page in get_pages():
            the_page_url = reverse('page',kwargs={'slug': page})      # PROBLEM SEEMS TO GENERATE STARTING HERE
            response = this_client_will.get(the_page_url)
            if page == 'index.html':
                output_dir = settings.SITE_OUTPUT_DIRECTORY
            else:
                output_dir = os.path.join(settings.SITE_OUTPUT_DIRECTORY, page)
                os.makedirs(output_dir)
            with open(os.path.join(output_dir, 'index.html'), 'wb', encoding='utf8') as f:
                f.write(response.content)

views.py

import os
from django.conf import settings
from django.http import Http404
from django.shortcuts import render
from django.template import Template
from django.utils._os import safe_join

# Create your views here.

def get_page_or_404(name):
    """Returns page content as a Django template or raise 404 error"""
    try:
        file_path = safe_join(settings.STATIC_PAGES_DIRECTORY, name)
    except ValueError:
        raise Http404("Page Not Found")
    else:
        if not os.path.exists(file_path):
            raise Http404("Page Not Found")

    with open(file_path,"r", encoding='utf8') as f:
        the_page = Template(f.read())

    return the_page

def page(request, slug='index'):
    """ Render the requested page if found """
    file_name = '{0}.html'.format(slug)
    page = get_page_or_404(file_name)
    context = {'slug': slug, 'page': page} 
    return render(request, 'page.html', context)   # THE TRACEBACK POINTS AT THIS LINE, TOO

以防万一有用知道，这是我的 urls.py ：

from django.conf.urls import include, url

urlpatterns = [
    url(r'^page/(?P<slug>[-\w]+)/$', 'sitebuilder.views.page', name='page'),
    url(r'^page$', 'sitebuilder.views.page', name='homepage'),
]

我发现这令人沮丧，主要是因为这个问题似乎与reverse（）函数有关，就像在构建模块中看到的那样，并且我没有很长时间使用该函数，只要我记得，但我不知道这是不是我的问题。有人可以帮我弄清楚我的问题来自何处以及如何解决（如果你有任何提示）？非常感谢。

Answer 1

base_lang = get_language().split('-')[0]

这一行是Django 1.8中的一个错误。它已作为1.8.1的一部分修复：

在停用翻译（#24569）时，翻译函数check_for_language（）和get_language_bidi（）中的Prevented TypeError。

您应该升级到最新的1.8.x版本1.8.8。在撰写本文时。这将解决这个bug和其他问题。

次要版本仅包含错误修正和安全补丁，因此您应该始终升级到您使用的任何主要版本的最新次要版本。

Answer 2

尝试在页面视图中激活语言：

from django.utils import translation

def page(request, slug='index'):
    """ Render the requested page if found """
    file_name = '{0}.html'.format(slug)
    page = get_page_or_404(file_name)
    context = {'slug': slug, 'page': page} 
    translation.activate('en') # <------- Activate language EN
    return render(request, 'page.html', context)

这是因为上下文处理器正在尝试获取上下文语言，而且显然是None。

<强>更新：

好吧，这是1.8中的一个bug，因为knbk说，所以你需要将它升级到新版本..

Django：AttributeError：'NoneType'对象没有属性'split'

2 个答案: