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请问django的templates和url,views之间的关系怎么弄?

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请问django的templates和url,views之间的关系怎么弄?

沧海一幻觉 2019-08-19 17:13:20

django的templates和url,views之间的关系怎么弄


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4 回答

?
暮色呼如

settings:
import os.path

TEMPLATE_DIRS = (
os.path.join(os.path.dirname(__file__), 'templates').replace('\\','/'),
)

urls.py:
from django.conf.urls.defaults import *
from django.views.generic.simple import direct_to_template
from cy.views import index

urlpatterns = patterns('',
(r'^$',index), (这里地方怎么弄?)
)

views.py:
from django.http import Http404,HttpResponse
from django.template.loader import get_template
from django.template import Context
import datetime

def index(request):
now=datetime.datetime.now()
return render_to_response('index.html', locals())

以下是我的目录结构
cy:
manage.py
cy:
__init__.py
settings.py
urls.py
views.py
wsgi.py
templates:
base.html
index.html
about.html
contact.html



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反对 回复 2019-08-24
?
慕码人2483693

django2.0 的代码和1。x的代码在这个是完全不一样的。。。。
urlpatterns = [
path('', views.index, name='index'),
path('topics/', views.topics, name='topics'),
path('topics/(?P<topic_id>\d+)/', views.topic, name='topic'),

]

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反对 回复 2019-08-24
?
慕圣8478803

流线型化(streamlinling)函数导入1:直接导入视图函数 from django.conf.urls.defaults import * from mysite.views import hello urlpatterns = patterns('', (r'^hello/$', hello), (r'^time/$', time), )2:导入包函模块名和函数的客串,而不是函数本身 from django.conf.urls.defaults import * from mysite import views urlpatterns = patterns('', (r'^hello/$', 'views.hello'), (r'^time/$', 'views.time'),

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反对 回复 2019-08-24
?
烧仙草VB

流线型化(streamlinling)函数导入

1:直接导入视图函数
from django.conf.urls.defaults import *
from mysite.views import hello
urlpatterns = patterns('',
(r'^hello/$', hello),
(r'^time/$', time),
)
2:导入包函模块名和函数的客串,而不是函数本身
from django.conf.urls.defaults import *
from mysite import views
urlpatterns = patterns('',
(r'^hello/$', 'views.hello'),
(r'^time/$', 'views.time'),
)
3:不用导入任何视图内容,写清楚字符串描述
from django.conf.urls.defaults import *
urlpatterns = patterns('',
(r'^hello/$', 'mysite.views.hello'),
(r'^time/$', 'mysite.views.time'),
)
4:提取一个公共视图前缀
from django.conf.urls.defaults import *
urlpatterns = patterns('mysite.views',
(r'^hello/$', 'hello'),
(r'^time/$', 'time'),
)
5:partterns()返回对对象的相加
旧:
from django.conf.urls.defaults import *
urlpatterns = patterns('mysite.view',
(r'^hello/$', 'hello'),
(r'^time/$', 'time'),
(r'^other/$', 'mysite.others.other'),
)
新:
from django.conf.urls.defaults import *
urlpatterns = patterns('mysite.view',
(r'^hello/$', 'hello'),
(r'^time/$', 'time'),
)
urlpatterns += patterns('mysite.others',
(r'^other/$', 'other'),
)
6:到目前为止,在所有URLconf例子中,我们使用的很简单,即“无命名”正则表达式组,在我们
想要捕获的URL部分加上小括号,django会将捕获的文本作为位置参数传递给视图函数。在更
高级的用法中,还可以使用“命名”正则表达式组来捕获URL,并且将其作为“关键字”参数 传给视图。

在python正则表达式中,命名的正则表达式组的语法是(?p<name>pattern),这里name是组的名字,而pattern是匹配的某个模式。

下面是一个使用无名组的URLconf的例子:
from django.conf.urls.defaults import *
from mysite import views
urlpatterns = patterns('',
(r'^arcticles/(\d{4})/$',views.year_archive),
(r'^arcticles/(\d{4})/(\d{2})/$', view.moth_archive),
)
下面是相同的URLconf,使用命名组进行了重写:
from django.conf.urls.defaults import *
from mysite import views
urlpatterns = patterns('',
(r'^arcticles/(?P<year>\d{4})/$', veiws.year_archive),
(r'^arcticles/(?P<year>\d{4})/(?P<month>\d{2})/$', veiws.month_archive),
)
如果不带命名组,请求/arcticle/2006/03/将会等于这样的函数调用
month_archive(request, '2006', '03')
而带命名组,同样的请求就是这样的函数调用
month_archive(request, year='2006', month='03')
从中可以看出,使用命名组可以让你的URLconf更加清晰,减少参数次序可能搞混潜在的Bug,
还可以让你的定义中对参数重新排序。

7:视图冗余:
# urls.py

from django.conf.urls.defaults import *
from mysite import views

urlpatterns = patterns('',
(r'^(foo)/$', views.foobar_view),
(r'^(bar)/$', views.foobar_view),
)

# views.py

from django.shortcuts import render_to_response
from mysite.models import MyModel

def foobar_view(request, url):
m_list = MyModel.objects.filter(is_new=True)
if url == 'foo':
template_name = 'template1.html'
elif url == 'bar':
template_name = 'template2.html'
return render_to_response(template_name, {'m_list': m_list})
利用上面的方法可以减少视图冗余
8:为url里传入固定的参数:
# urls.py

from django.conf.urls.defaults import *
from mysite import views

urlpatterns = patterns('',
(r'^foo/$', views.foobar_view, {'template_name': 'template1.html'}),
(r'^bar/$', views.foobar_view, {'template_name': 'template2.html'}),
)

# views.py

from django.shortcuts import render_to_response
from mysite.models import MyModel

def foobar_view(request, template_name):
m_list = MyModel.objects.filter(is_new=True)
return render_to_response(template_name, {'m_list': m_list})
一些URL参数详解:
/mydata/jan/01/
/mydata/jan/02/
/mydata/jan/03/
以上为三个url我们可以用不同的方式实现
1: (r'^mydata/(/w{3})/(/d/d)', views.mydata) mydata(request, 'jan', '01')
2: (r'^mydata/(?P<month>/w{3})/(?P<day>/d/d)', view.mydata) mydata(request, month='jan', day='01')
3: (r'^mydata/birthday/$', views.mydata, {month:'jan', day:'01'}) mydata(request, month='jan', day='01')
9:include导入:
from django.conf.urls.defaults import *
urlpatterns = patterns('',
(r'^weblog/', include('mysite.blog.urls')),
(r'^photos/', include('mysite.photos.urls')),
(r'^about/$', 'mysite.views.about'),
)
10:实例:
验证用户是否登录:
以下是三个视图
def my_view1(request):
if not request.user.is_authenticated():
return HttpResponseRedirect('/accounts/login/')
# ...
return render_to_response('template1.html')

def my_view2(request):
if not request.user.is_authenticated():
return HttpResponseRedirect('/accounts/login/')
# ...
return render_to_response('template2.html')

def my_view3(request):
if not request.user.is_authenticated():
return HttpResponseRedirect('/accounts/login/')
# ...
return render_to_response('template3.html')
以下是对视图进行包装:
def requires_login(view):
def new_view(request, *args, **kwargs):
if not request.user.is_authenticated(): #如果用户没有登录,跳转到登录界面
return HttpResponseRedirect('/accounts/login/')
return view(request, *args, **kwargs) #否则返回传进来的方法
return new_view #返回new_view值:登录视图或者是传进来的视图
以下为URL配置:
from django.conf.urls.defaults import *
from mysite.views import requires_login, my_view1, my_view2, my_view3

urlpatterns = patterns('',
(r'^view1/$', requires_login(my_view1)),
(r'^view2/$', requires_login(my_view2)),
(r'^view3/$', requires_login(my_view3)),
)



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反对 回复 2019-08-24

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