一、函数版 （未更新）
1 def show_books(request): 2 """ 3 自定制分页器（函数版）: 4 :param request: 5 :return: data_list: 希望展示在当前页面的数据集合 6 page_html: 页码导航条html 7 """ 8 url = request.path_info 9 10 all_book_list = models.Book.objects.all()11 total_data = all_book_list12 13 try:14 total_data_num = total_data.count() # 总数据条数15 except TypeError:16 total_data_num = len(total_data)17 18 current_page_id = request.GET.get('page') # 当前页码id19 try:20 current_page_id = int(current_page_id)21 except (ValueError, TypeError):22 current_page_id = 123 24 perpage_data_num = 10 # 每个页面展示数据条数25 26 quotient, more = divmod(total_data_num, perpage_data_num)27 total_page_num = quotient+1 if more != 0 or quotient == 0 and more == 0 else quotient # 总页码数28 29 # 控制当前页码乱入负数、太大数等情况30 if current_page_id < 1:31 current_page_id = 132 elif current_page_id > total_page_num:33 current_page_id = total_page_num34 35 pagedata_start_id = (current_page_id - 1) * perpage_data_num36 pagedata_end_id = current_page_id * perpage_data_num37 38 nvgtnbar_page_num = 9 # 页面中页码导航条显示的页码个数39 left_page_id = current_page_id - nvgtnbar_page_num // 2 # 页码导航条最左边的页码id40 right_page_id = current_page_id + nvgtnbar_page_num // 2 # 页码导航条最右边的页码id41 42 # 两端控制溢出43 if left_page_id < 1:44 left_page_id = 145 right_page_id = nvgtnbar_page_num46 if right_page_id > total_page_num:47 right_page_id = total_page_num48 left_page_id = total_page_num - nvgtnbar_page_num + 149 50 # 数据量不足的情况下，控制页码导航条的显示51 if total_page_num < nvgtnbar_page_num:52 left_page_id = 153 right_page_id = total_page_num54 55 page_html = ''56 prev_page_id = current_page_id - 1 if current_page_id != 1 else current_page_id57 next_page_id = current_page_id + 1 if current_page_id != total_page_num else current_page_id58 first_page_html = '二、分页器（封装版） （已更新）
class Pagination(object): def __init__(self, request, data_set, perpage_data_count=10, nvgbar_page_count=9): """ 自定制分页器: 供调用属性 设定接收分页器处理后结果的对象为mypage mypage.data： 希望展示在当前页面上的数据集合 mypage.page_html：页码导航栏html :param request: request请求 :param data_set: 希望进行分页处理的容器性数据对象，即总数据 :param perpage_data_count: 希望每个页面要展示的数据条数，默认10条 :param nvgbar_page_count: 希望页码导航条展示的页码数，默认9个页码 """ self.url = request.path_info self.perpage_data_count = perpage_data_count self.nvgbar_page_count = nvgbar_page_count current_page_id = request.GET.get('page') try: current_page_id = int(current_page_id) except (ValueError, TypeError): current_page_id = 1 self.current_page_id = current_page_id try: total_data_count = data_set.count() except TypeError: total_data_count = len(data_set) # quotient, more = divmod(total_data, self.perpage_data) # self.total_page_count = quotient + 1 if more != 0 or quotient == 0 and more == 0 else quotient # 总页码数 self.total_page_count, more = divmod(total_data_count, self.perpage_data_count) if more: self.total_page_count += 1 # 控制当前页码乱入负数、太大数等情况（两个if，顺序不能反） if self.current_page_id > self.total_page_count: self.current_page_id = self.total_page_count if self.current_page_id < 1: self.current_page_id = 1 perpagedata_start = (self.current_page_id - 1) * self.perpage_data_count perpagedata_end = self.current_page_id * self.perpage_data_count self.data = data_set[perpagedata_start: perpagedata_end] @property def page_html(self): left_page_id = self.current_page_id - self.nvgbar_page_count // 2 # 页码导航条最左边的页码id right_page_id = self.current_page_id + self.nvgbar_page_count // 2 # 页码导航条最右边的页码id # 两端控制溢出 if left_page_id < 1: left_page_id = 1 right_page_id = self.nvgbar_page_count if right_page_id > self.total_page_count: right_page_id = self.total_page_count left_page_id = self.total_page_count - self.nvgbar_page_count + 1 # 数据量不足的情况下，控制页码导航条的显示 if self.total_page_count < self.nvgbar_page_count: left_page_id = 1 right_page_id = self.total_page_count page_html_list = [' ') page_html = ''.join(page_html_list) return page_html 视图中使用分页器： 模板html中调用
from utils.mypage import Pagination def show_books(request): book_list = models.Books.objects.all() # book_list = models.Books.objects.all().value_list('title', 'authors') show_obj = Pagination(request, book_list) return render(request, 'books.html', { 'show_obj': show_obj}) 模板中：
Title { { show_obj.page_html|safe }}
{ % for book in show_obj.data %} 序号 ID 书名 { % endfor %} { { forloop.counter }} { { book.id }} { { book.title }}
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