1. views：请求的其他信息
2. 模板继承和引用
3. 自定义函数(simple_tag & filter)
4. 分页示例
5. cookie
6. CBV和FBV用户认证装饰器

1.views-请求的其他信息

1 from django.core.handlers.wsgi import  WSGIRequest2 3 request.environ4 request.environ['HTTP_USER_AGENT']

2.模板继承和引用

1 urlpatterns = [2     #path('admin/', admin.site.urls),3     url(r'tp11',views.tp11),4     url(r'tp12',views.tp11),5     url(r'tp13',views.tp11),6 7 ]

1 def tp11(request): 2  3     user_list = [1,2,3,] 4  5     return render(request,'tp11.html',{
    'u':user_list}) 6  7  8 def tp12(request): 9     name = 'root'10 11     return render(request, 'tp12.html', {
    'name': name})12 13 14 def tp13(request):15     status = '已删除'16 17     return render(request, 'tp13.html', {
    'status': status})

1  2  3  4     
       5      6     
       7     14     {% block css %} {% endblock %}15 16     
      
       潇韩海
      
17 18     {% block content %} {% endblock %}19     
      
20     21     {% block js %} {% endblock %}22 23 

1 {% extends 'master.html'%} 2  3 {% block title %} 用户管理 {% endblock %} 4  5 {% block content %} 6     
      
        7         {% for i in u %} 8             
       
{
    { i }}
 9         {% endfor %}10     
      
11 12     {% for i in u %}13         {% include 'tag.html' %}14     {% endfor %}15 {% endblock %}16 17 {% block css %}18     23 {% endblock %}24 25 {% block js %}26     27 {% endblock %}

1 
      
       2     
       3     
       4 
      

3.自定义函数(simple_tag & filter)

simple_taga. app创建templatetags目录b. 任意xxoo.py文件c.创建template对象reqisterd.   @register.simple_tag   def func(a1,a2)   	return "asasd"   	 e.settings中注册APP f. 顶部{% load xxoo %} g. {% 函数名 arg1 arg2%}  缺点：     参数任意

1  url(r'tp14/',views.tp14),

1 __author__ = 'Administrator' 2 from django import template 3 from django.utils.safestring import mark_safe 4  5 register = template.Library() 6  7 @register.simple_tag 8 def houyafan(a1,a2,): 9     return a1 + a210 11 @register.filter12 def jiajingze(a1,a2):13     return a1 + str(a2)

1 {% load xxoo %} 2  3  4  5     
       6      7  8  9     {
     { name }}10     {
    { name|lower }}11     {
    { name|truncatechars:"3" }}12 13     {% houyafan  2  8  %}14     15     {
    { "maliya"|jiajingze:"LS,YH" }}16     17      {% if "maliya"|jiajingze:"LS,YH" %}18      {% endif %}19 20 21 22 

4.分页示例

1 url(r'user_list/',views. user_list),

1 LISI = [] 2 for i in range(109): 3     LISI.append(i) 4  5 def user_list(request): 6     current_page = request.GET.get('p',1) 7     current_page = int(current_page) 8     start = (current_page-1) * 10 9     end = current_page * 1010     data = LISI[start:end]11 12     all_count = len(LISI)13     count,y = divmod(all_count,10)14     if y:15         count += 116 17     page_list = []18     for i in range(1,count+1):19         if i == current_page:20             temp = '%s' %(i,i)21         else:22             temp = '%s' %(i,i)23 24         page_list.append(temp)25     page_str = mark_safe("".join(page_list))26     return render(request,'user_list.html', {
    'li':data,'page_str':page_str})

1  2  3  4     
       5      6     18 19 20     
      
       21         {% for item in li %}22             {% include 'li.html' %}23         {% endfor %}24     
      
25     
      
       26         {
     { page_str }}27     
      
28 29 

1 
{
    { item }}

分页优化版

1 from django.shortcuts import render 2 from django.utils.safestring import mark_safe 3 from  utils import pagination 4 LISI = [] 5 for i in range(500): 6     LISI.append(i) 7  8 def user_list(request): 9     current_page = request.GET.get('p',1)10     current_page = int(current_page)11 12     val = request.COOKIES.get('per_page_count',10)13     val = int(val)14 15     page_obj = pagination.Page(current_page,len(LISI),val)16 17     data = LISI[page_obj.start:page_obj.end]18 19     page_str = page_obj.page_str("/user_list")20 21     return render(request,'user_list.html', {
    'li':data,'page_str': page_str})22     23   ###############################################################################24   from  utils import pagination25 26 LIST = []27 for i in range(500):28     LIST.append(i)29 30 def user_list(request):31     current_page = request.GET.get('p', 1)32     current_page = int(current_page)33 34     val = request.COOKIES.get('per_page_count')35     val = int(val)36     page_obj = pagination.Page(current_page,len(LIST),val)37     data = LIST[page_obj.start:page_obj.end]38 39     page_str = page_obj.page_str("/user_list/")40 41     return render(request,'user_list.html', {
    'li': data,'page_str': page_str})

1 __author__ = 'wei.han' 2 from django.utils.safestring import mark_safe 3  4  5 class Page: 6     def __init__(self, current_page, data_count, per_page_count=10, pager_num=7): 7         #用户点击值 8         self.current_page = current_page 9         #数据总数10         self.data_count = data_count11         #每页显示10条数据12         self.per_page_count = per_page_count13         #7页14         self.pager_num = pager_num15 16     #开始（显示居中）17     @property18     def start(self):19         return (self.current_page - 1) * self.per_page_count20 21     # 结束（显示居中）22     @property23     def end(self):24         return self.current_page * self.per_page_count25 26     #总页数27     @property28     def total_count(self):29         v, y = divmod(self.data_count, self.per_page_count)30         if y:31             v += 132         return v33 34     #url35     def page_str(self, base_url):36         page_list = []37 38         if self.total_count < self.pager_num:39             start_index = 140             end_index = self.total_count + 141         else:42             if self.current_page <= (self.pager_num + 1) / 2:43                 start_index = 144                 end_index = self.pager_num + 145             else:46                 start_index = self.current_page - (self.pager_num - 1) / 247                 end_index = self.current_page + (self.pager_num + 1) / 248                 if (self.current_page + (self.pager_num - 1) / 2) > self.total_count:49                     end_index = self.total_count + 150                     start_index = self.total_count - self.pager_num + 151 52         if self.current_page == 1:53             prev = '上一页'54         else:55             prev = '上一页' % (base_url, self.current_page - 1,)56         page_list.append(prev)57 58         for i in range(int(start_index), int(end_index)):59             if i == self.current_page:60                 temp = '%s' % (base_url, i, i)61             else:62                 temp = '%s' % (base_url, i, i)63             page_list.append(temp)64 65         if self.current_page == self.total_count:66             nex = '下一页'67         else:68             nex = '下一页' % (base_url, self.current_page + 1,)69         page_list.append(nex)70 71         jump = """72         GO73         79         """ % (base_url,)80 81         page_list.append(jump)82 83         page_str = mark_safe("".join(page_list))84 85         return page_str

1  2  3  4     
       5      6     18 19 20     
      
       21         {% for item in li %}22             {% include 'li.html' %}23         {% endfor %}24     
      
25 26     
      
       27         
       28             1029             3030             4031             5032         33     
      
34 35     
      
       36         {
     { page_str }}37     
      
38 39     40     41     56 57 

5.cookie

rep = HttpResponse(...) 或 rep ＝ render(request, ...) rep.set_cookie(key,value,...)rep.set_signed_cookie(key,value,salt='加密盐',...)    参数：        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

设置cookie有限时间

request.COOKIES.get('username111')reqpone = render(request,'index.html')设置cookie，关闭浏览器后就失效response.set_cookie('key','value')设置cookie,10秒后失效response.set_cookie('username111','value',max_age=10)return response设置cookie,5秒后失效import datetimecurrent_date = datetime.datetime.utcnow()current_date = current_date + datetime.timedelta(seconds=5)res.set_cookie('username111',u,expires=current_date)

 cookie加密

#request.COOKIES.get('...')#request.set_cookie(...)obj = HttpResponse('s')加密obj.set_signed_cookie('username','kanbazi',salt='jiamizifuchuan')获取加密request.get_signed_cookie('username',salt="jiamizifuchuan")return response

6.CBV和FBV用户认证装饰器

FBV

1 url(r'index/',views.index),

1 from django.shortcuts import render,redirect 2 from django.utils.safestring import mark_safe 3  4 user_info = { 5     'dachengzi': {
    'pwd': "123"}, 6     'kanbazi': {
    'pwd': "123"}, 7 } 8  9 10 def login(request):11     if request.method == "GET":12         return render(request, 'login.html')13     if request.method == "POST":14         u = request.POST.get('username')15         p = request.POST.get('pwd')16         dic = user_info.get(u)17         if not dic:18             return render(request,'login.html')19         if dic['pwd'] == p:20             res = redirect('/index/')21             res.set_cookie('username111',u)22             return res23         else:24             return render(request,'login.html')25             26             27 def auth(func):28     def inner(request,*arges,**kwargs):29         v = request.COOKIES.get('username111')30         if not v:31             return redirect('/login/')32         return func(request,*arges,**kwargs)33     return inner34     35 36 @auth37 def index(request):38     v = request.COOKIES.get('username111')39     return render(request,'index.html',{
    'current_user': v})

CBV

1 from django import views 2 from django.utils.decorators import method_decorator 3  4 @method_decorator(auth,name='dispatch') 5 class Order(views.View): 6  7     # @method_decorator(auth) 8     # def dispatch(self,request, *args,**kwargs): 9     #      return super(Order,self).dispatch(request, *args, **kwargs)10 11     # @method_decorator(auth)12     def get(self,request):13         v = request.COOKIES.get('username111')14         return render(request,'index.html',{
    'current_user': v})15 16     def post(self,request):17         v = request.COOKIES.get('username111')18         return render(request,'index.html',{
    'current_user': v})

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       5      6  7  8     
      
        9         
       10         
       11         
       12     
      
13 14 

1  2  3  4     
       5      6  7  8     
欢迎登录：{
    { current_user }}
 9 10