模板导入_分页_cookie_装饰器_笔记

默认值:
url(r'index/', views.index,{'name':"root"})
def index(request,name):
    print(name)
    return HttpResponse('ok')

命名空间:
/a/   include('app01.urls',namespace='m1')
/b/   include('app01.urls',namespace='mm1')

app01.urls
/index/  name='n1'

reverse('m1:n1')-->对应url /a/index/

命名空间补充:
from django.conf.urls import url,include
urlpatterns = [
    url(r'^a/', include('app01.urls', namespace='author-polls')),
    url(r'^b/', include('app01.urls', namespace='publisher-polls')),
]

app01.urls.py
from django.conf.urls import url
from app01 import views
app_name = 'app01'
urlpatterns = [
    url(r'^(?P<pk>\d+)/$', views.detail, name='detail')
]

app01.views.py
def detail(request, pk):
    print(request.resolver_match)
    return HttpResponse(pk)

以上定义带命名空间的url之后，使用name生成URL时候，应该如下：
v = reverse('author-polls:detail', kwargs={'pk':11})
{% url 'author-polls:detail' pk=12 pp=99 %}

自定义函数
    simple_tag
    1 app下创建templatetags目录
    2 任意py文件 xxoo.py

    3 创建template对象,register

      from django import template
      from django.utils.safestring import  mark_safe

      register=template.Library()

    4.
      @register.simple_tag
      def hou(a1,a2):
        return a1+a2

    5. settings注册app

    6.顶部{%load xxoo %}

    7.使用   {% 函数名 arg1 arg2 %}  参数任意传
            {% hou 2 9 %}

    缺点:不能作为if条件
    有点:参数任意

    filter
    1 app下创建templatetags目录
    2 任意py文件 xxoo.py

    3 创建template对象,register

      from django import template
      from django.utils.safestring import  mark_safe

      register=template.Library()

    4.
      @register.filter
      def hou(a1,a2):
        return a1+a2

    5. settings注册app

    6.顶部{%load xxoo %}

    7.使用   {{ "参数一"|函数名:"参数二,参数三" }} 或 {{ "参数一"|函数名:数字 }}  参数任意传
            {{ "maliya" | jz:"LSS" }}

    缺点:参数最多两个，不能加空格
    优点:能作为if条件

分页(自定义分页):
    xss:
        前端:{{page_str|safe}}

        后台:mark_safe(page_str)

cookie
key,              键
value='',         值
max_age=None,     超时时间
expires=None,     超时时间(IE requires expires, so set it if hasn't been already.)
path='/',         Cookie生效的路径，/ 表示根路径，特殊的：跟路径的cookie可以被任何url的页面访问
domain=None,      Cookie生效的域名
secure=False,     https传输
httponly=False    只能http协议传输，无法被JavaScript获取（不是绝对，底层抓包可以获取到也可以被覆盖）

auth装饰器
def auth(func):
    def inner(request,*args,**kwargs):
        v=request.COOKIES.get('username111')
        if not v:
            return redirect('/login/')
        return  func(request,*args,**kwargs)
    return inner

FBV装饰
@auth
def index(request):
    #获取当前已经登录的用户
    v=request.COOKIES.get('username111')
    return render(request,'index.html',{'current_user':v})

CBV装饰
from django import views
from django.utils.decorators import method_decorator
@method_decorator(auth,name='dispatch')
class Order(views.View):
    # @method_decorator(auth)
    # def dispatch(self, request, *args, **kwargs):
    #     return super(Order,self).dispatch(request,*args,**kwargs)

    @method_decorator(auth)
    def get(self,request):
        v = request.COOKIES.get('username111')
        return render(request, 'index.html', {'current_user': v})

    def post(self,request):
        v = request.COOKIES.get('username111')
        return render(request, 'index.html', {'current_user': v})