插拔式分页+bootstrap4（开源）

 1 class Pagination(object):
 2     def __init__(self, PagerCount,Pages, perPageItemNum, maxPageNum):
 3         # 数据总个数
 4         self.PagerCount = PagerCount
 5         # 当前页
 6         try:
 7             v = int(Pages)
 8             if v <= 0:
 9                 v = 1
10             self.current_Pages = v
11         except Exception as e:
12             self.current_Pages = 1
13 
14         # 每页显示的行数
15         self.per_page_item_num = perPageItemNum
16         # 最多显示页面几个页面
17         self.max_Page_Num = maxPageNum
18 
19 
20     #切片显示从多少开始
21     def start(self):
22         return (self.current_Pages - 1) * self.per_page_item_num
23 
24     # 切片显示从多少结束
25     def end(self):
26         return self.current_Pages * self.per_page_item_num
27 
28 
29     #计算页面多余的个数的时候
30     @property  # 直接填写self.num_pages   不用加括号
31     def num_pages(self):
32         # 总页数
33         a, b = divmod(self.PagerCount, self.per_page_item_num)
34         if b == 0:
35             return a
36         else:
37             return a + 1
38 
39     # 最多显示maxPageNum个页面
40     def paper_num_range(self):
41         if self.num_pages < self.max_Page_Num:
42             return range(1, self.num_pages + 1)
43         # 总页数特别多
44         part = int(self.max_Page_Num / 2)
45         if self.current_Pages <= part:
46             return range(1, self.max_Page_Num + 1)
47         if (self.current_Pages + part) > self.num_pages:
48             return range(self.num_pages - self.max_Page_Num + 1, self.num_pages + 1)
49         return range(self.current_Pages - part, self.current_Pages + part + 1)
50 
51 
52     def page_str(self):
53         page_list = []
54 
55         #首页
56         # first = "<li><a href=‘/myself/project/?p=1‘>首页</a></li>"
57         first = "<li class=‘page-item‘><a class=‘page-link‘ href=‘/myself/project/?p=1‘>首页</a></li>"
58         page_list.append(first)
59 
60 
61         # 添加上一页
62         if self.current_Pages == 0:
63             # prev = "<li><a href=‘#‘>上一页</a></li>"
64             prev = "<li class=‘page-item‘><a class=‘page-link‘ href=‘#‘>上一页</a></li>"
65         else:
66             prev = "<li class=‘page-item‘><a class=‘page-link‘ href=‘/myself/project/?p=%s‘>上一页</a></li>" %(self.current_Pages-1)
67             page_list.append(prev)
68 
69         #中间页码
70         for i in self.paper_num_range():
71             if i == self.current_Pages: #显示当前页样式
72                 temp = "<li class=‘page-item active‘><a class=‘page-link‘ href=‘/myself/project/?p=%s‘>%s</a></li>" % (i, i)
73             else:
74                 temp = "<li class=‘page-item‘><a class=‘page-link‘  href=‘/myself/project/?p=%s‘>%s</a></li>" % (i, i)
75             page_list.append(temp)
76 
77 
78         #下一页
79         if self.current_Pages == self.num_pages:
80             nex = "<li class=‘page-item‘><a  class=‘page-link‘ href=‘#‘>下一页</a></li>"
81         else:
82             nex = "<li class=‘page-item‘><a class=‘page-link‘  href=‘/myself/project/?p=%s‘>下一页</a></li>" %(self.current_Pages + 1)
83         page_list.append(nex)
84 
85 
86         #尾页
87         end = "<li class=‘page-item‘><a class=‘page-link‘ href=‘/myself/project/?p=%s‘>尾页</a></li>" % (self.PagerCount)
88         page_list.append(end)
89 
90 
91 
92         #将上面的内容加入页面
93         return "".join(page_list)

from 工程名.pager import Pagination

article_list = models.Article.objects.all()    //Article是文章的数据表

P = request.GET.get("p")     #这个直接复制

#Pagination(数据库.count,当前页P = request.GET.get("p"),显示多少行， 最多显示多少页链接) 

#示例：对应Pagination的解释
pager_obj = Pagination(article_list.count(), P, 2, 10)

 list = article_list[pager_obj.start():pager_obj.end()] #直接复制

return render(request, "index.html",{"list":list,"pager_obj":pager_obj}) #直接复制

示例：57行代码
   href=‘/myself/project/?p=1‘>  #修改路由 其余的都需要修改对应的路由

 {% for article in list %}  所有表里的数据可以从article.取值

在py文件中，添加第五个参数：username:
def __init__(self, PagerCount,Pages, perPageItemNum, maxPageNum,username):    
        self.username= username
           #修改a标签参数：
             href=‘/index/myblog/{}/?p=1‘>首页</a></li>".format(self.username)
             href=‘/index/myblog/%s/?p=%s‘>上一页</a></li>" %(self.username,self.current_Pages-1)