关于命名空间的问题,在project项目中,我们可以设置路由类似于:
from django.conf.urls import url,include
from django.contrib import admin
from django.conf import settings
from django.conf.urls.static import static
urlpatterns = [
url(r'^img_db/', include('img_db.urls')),
url(r'^polls/', include('polls.urls')),
url(r'^admin/', admin.site.urls),
url(r'^blog/', include('blog.urls')),
]
# urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
# urlpatterns += static(settings.STATIC_URL, document_root=settings.STATIC_ROOT)
但是当一个解决方案包含多个项目的时候,就需要用到命名空间来处理路由了
from django.conf.urls import url
from .views import *
app_name='polls'
urlpatterns = [
url(r'^$', index, name='index'),
url(r'^test/$', index_export, name="index_export"),
url(r'^(?P<question_id>[0-9]+)/$', detail_version2, name='detail'),
url(r'^(?P<question_id>[0-9]+)/results/$', results, name='results'),
url(r'^(?P<question_id>[0-9]+)/vote/$', vote, name='vote'),
]
此时,给项目添加app_name来使用路由中的name来达到后期可以动态利用路由的问题
比如我们在页面中可以写:
<a href="{% url 'polls:detail' question.id %}">vote again?</a>
<form action="{% url 'polls:vote' question.id %}" method="post">
django的过滤器和angular的过滤器是非常类似的,在django/template/defaultfilters.py中定义了很多过滤器的
@register.filter(is_safe=False)
def pluralize(value, arg='s')
用法 vote{{choice.vote|pluralize }}
* If value is 0, vote{{ value|pluralize }} display "0 votes".
那么最后生成就是 vote{{0|pluralize}}---> value+ (vote + s) 生成后缀信息 s为arg的默认值