我是 Django 的新手，并且正在研究像 bitly 这样的 URL 缩短器项目。我在尝试单击在success.html模板中创建的链接时遇到问题，它不会重定向，并附加路径+ short_url + url：
DEBUG-URLRedirectView::get(): obj.url: www.google.com
[05/Feb/2017 19:02:27] "GET /gesw1m/ HTTP/1.1" 302 0
Not Found: /gesw1m/www.google.com
[05/Feb/2017 19:02:27] "GET /gesw1m/www.google.com HTTP/1.1" 404 2216
这是项目树：
-src_shrtnr
manage.py
-shrtnr
hosts.py
settings.py
urls.py
-hostconf
urls.py
views.py
-shortener
models.py
views.py
-templates
-shortener
already-exist.html
home.html
success.html
-analytics
...
这是success.html模板和图片：
<div style='align-text: center; width: 800px; margin: 0 auto;'>
<h1>Created!</h1>
<p>{{ object.url }}</p>
<p>Count: {{ object.clickevent.count }}</p>
<p><a href='{{ object.get_short_url }}'>{{ object.get_short_url }}</a></p>
<a href='/'>+New</a>
</div>
这是缩短器 models.py 文件：
class ShrtnrURL(models.Model):
url = models.CharField(max_length=220, validators=[validate_url, validate_dot_com])
shortcode = models.CharField(max_length=SHORTCODE_MAX, unique=True, blank=True)
...
def get_short_url(self):
url_path = reverse('scode', kwargs={'shortcode': self.shortcode}, host='www', scheme='http')
print('DEBUG-ShrtnrURL::get_short_url(), url_path: ', url_path)
return url_path
这是缩短的 views.py 相关视图：
class URLRedirectView(View):
qs = ShrtnrURL.objects.filter(shortcode__iexact=shortcode)
if qs.count() != 1 and not qs.exists():
raise Http404
obj = qs.first()
print('DEBUG-URLRedirectView::get(): obj.url: ',ClickEvent.objects.create_event(obj), obj.url)
return HttpResponseRedirect(obj.url)
这是hostconf urls.py：
from .views import wildcard_redirect
urlpatterns = [
url(r'^(?P<path>.*)', wildcard_redirect),
]
这是hostconf views.py：
DEFAULT_REDIRECT_URL = getattr(settings, 'DEFAULT_REDIRECT_URL', 'http://www.shrtnr.co')
def wildcard_redirect(request, path=None):
new_url = DEFAULT_REDIRECT_URL
if path is not None:
new_url = DEFAULT_REDIRECT_URL + '/' + path
print('DEBUG-wildcard_redirect(), new_url: ', new_url)
return HttpResponseRedirect(new_url)
这是hosts.py：
from shrtnr.hostsconf import urls as redirect_urls
host_patterns = [
host(r'www', settings.ROOT_URLCONF, name='www'),
host(r'(?!www).*', redirect_urls, name='wildcard'),
]
这是 shrtnr urls.py：
from shortener.views import HomeView, URLRedirectView
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^$', HomeView.as_view()),
url(r'^(?P<shortcode>[\w-]+)/$', URLRedirectView.as_view(), name='scode'),
]
从 settings.py 中选择的部分：
ALLOWED_HOSTS = ['www.shrtnr.co', 'shrtnr.co', 'blog.shrtnr.co']
INSTALLED_APPS = [
...
# Third party
'django_hosts',
# Custom app
'analytics',
'shortener',
]
MIDDLEWARE = [
'django_hosts.middleware.HostsRequestMiddleware',
...
'django_hosts.middleware.HostsResponseMiddleware',
]
ROOT_URLCONF = 'shrtnr.urls'
ROOT_HOSTCONF = 'shrtnr.hosts'
DEFAULT_HOST = 'www'
DEFAULT_REDIRECT_URL = 'http://www.shrtnr.co:8000'
PARENT_HOST = 'shrtnr.co:8000'
只是指出我在 /etc/hosts 中添加了：
127.0.0.1 www.shrtnr.co
127.0.0.1 shrtnr.co
127.0.0.1 blog.shrtnr.co
我仍处于“调试”模式，尚未托管（将使用 Heroku），但我在 settings.py 中根据需要添加了：8000 端口。我想我添加了所有必要的信息，如果我忘记提及某些内容，请告诉我。一旦我托管它，它可能会得到解决，但我不确定。
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