标签:bsp 自定义分页 %s django ext imp boot play 条件
1 """ 2 分页组件使用示例: 3 4 obj = Pagination(request.GET.get(‘page‘,1),len(USER_LIST),request.path_info) 5 page_user_list = USER_LIST[obj.start:obj.end] 6 page_html = obj.page_html() 7 8 return render(request,‘index.html‘,{‘users‘:page_user_list,‘page_html‘:page_html}) 9 10 11 """ 12 13 14 class Pagination(object): 15 16 def __init__(self,current_page,all_count,request,per_page_num=2,pager_count=11): 17 """ 18 封装分页相关数据 19 :param current_page: 当前页 20 :param all_count: 数据库中的数据总条数 21 :param per_page_num: 每页显示的数据条数 22 :param pager_count: 最多显示的页码个数 23 """ 24 25 try: 26 current_page = int(current_page) 27 except Exception as e: 28 current_page = 1 29 30 if current_page <1: 31 current_page = 1 32 33 self.current_page = current_page 34 35 self.all_count = all_count 36 self.per_page_num = per_page_num 37 38 39 # 总页码 40 all_pager, tmp = divmod(all_count, per_page_num) 41 if tmp: 42 all_pager += 1 43 self.all_pager = all_pager 44 45 46 self.pager_count = pager_count 47 self.pager_count_half = int((pager_count - 1) / 2) 48 49 # 保存搜索条件 50 import copy 51 self.params = copy.deepcopy(request.GET) 52 53 @property 54 def start(self): 55 return (self.current_page - 1) * self.per_page_num 56 57 @property 58 def end(self): 59 return self.current_page * self.per_page_num 60 61 def page_html(self): 62 # 如果总页码 < 11个: 63 if self.all_pager <= self.pager_count: 64 pager_start = 1 65 pager_end = self.all_pager + 1 66 # 总页码 > 11 67 else: 68 # 当前页如果<=页面上最多显示11/2个页码 69 if self.current_page <= self.pager_count_half: 70 pager_start = 1 71 pager_end = self.pager_count + 1 72 73 # 当前页大于5 74 else: 75 # 页码翻到最后 76 if (self.current_page + self.pager_count_half) > self.all_pager: 77 pager_end = self.all_pager + 1 78 pager_start = self.all_pager - self.pager_count + 1 79 else: 80 pager_start = self.current_page - self.pager_count_half 81 pager_end = self.current_page + self.pager_count_half + 1 82 83 page_html_list = [] 84 85 first_page = ‘<li><a href="?page=%s">首页</a></li>‘ % (1,) 86 page_html_list.append(first_page) 87 88 if self.current_page <= 1: 89 prev_page = ‘<li class="disabled"><a href="#">上一页</a></li>‘ 90 else: 91 prev_page = ‘<li><a href="?page=%s">上一页</a></li>‘ % (self.current_page - 1,) 92 93 page_html_list.append(prev_page) 94 95 for i in range(pager_start, pager_end): 96 self.params[‘page‘] = i 97 if i == self.current_page: 98 temp = ‘<li class="active"><a href="?%s">%s</a></li>‘ % (self.params.urlencode(), i,) 99 else: 100 temp = ‘<li><a href="?%s">%s</a></li>‘ % (self.params.urlencode(), i,) 101 page_html_list.append(temp) 102 103 if self.current_page >= self.all_pager: 104 next_page = ‘<li class="disabled"><a href="#">下一页</a></li>‘ 105 else: 106 next_page = ‘<li><a href="?page=%s">下一页</a></li>‘ % (self.current_page + 1,) 107 page_html_list.append(next_page) 108 109 last_page = ‘<li><a href="?page=%s">尾页</a></li>‘ % (self.all_pager,) 110 page_html_list.append(last_page) 111 112 return ‘‘.join(page_html_list)
1 from django.shortcuts import render,HttpResponse 2 from app01 import models 3 4 # Create your views here. 5 def index(request): 6 # li = [] 7 # for i in range(100): 8 # li.append(models.Book(name="图书%s"%i,price=10+i)) 9 # models.Book.objects.bulk_create(li) 10 # return HttpResponse(‘ok‘) 11 from app01.page import Pagination 12 current_page_num=request.GET.get(‘page‘,1) 13 book_list = models.Book.objects.all() 14 pagination=Pagination(current_page_num,book_list.count(),request) 15 book_list=book_list[pagination.start:pagination.end] 16 return render(request,‘index.html‘,locals())
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Title</title> 6 <link rel="stylesheet" href="/static/bootstrap-3.3.7-dist/css/bootstrap.css"> 7 </head> 8 <body> 9 <ul> 10 {% for book in book_list %} 11 <li>{{ book.name }}---{{ book.price }}</li> 12 {% endfor %} 13 </ul> 14 <nav aria-label="Page navigation"> 15 <ul class="pagination"> 16 {{ pagination.page_html|safe }} 17 </ul> 18 </nav> 19 20 </body> 21 </html>
标签:bsp 自定义分页 %s django ext imp boot play 条件
原文地址:https://www.cnblogs.com/xuqidong/p/12231766.html