How to implement the custom pager for python
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Custom pager encapsulation code
Encapsulate paging related data:
: param current_page: current page
: param all_count: the total number of data items in the database
: param per_page_num: the number of pieces of data displayed per page
: param pager_count: the maximum number of page numbers displayed
Class Pagination (object): def _ _ init__ (self, current_page, all_count, per_page_num=2, pager_count=11): try:current_page = int (current_page) except Exception as e:current_page = 1if current_page
< 1:current_page = 1self.current_page = current_pageself.all_count = all_countself.per_page_num = per_page_num# 总页码all_pager, tmp = divmod(all_count, per_page_num)if tmp:all_pager += 1self.all_pager = all_pagerself.pager_count = pager_countself.pager_count_half = int((pager_count - 1) / 2)@propertydef start(self):return (self.current_page - 1) * self.per_page_num@propertydef end(self):return self.current_page * self.per_page_numdef page_html(self):# 如果总页码 < 11个：if self.all_pager 11else:# 当前页如果= self.all_pager:next_page = '下一页'else:next_page = '下一页' % (self.current_page + 1,)page_html_list.append(next_page)last_page = '尾页' % (self.all_pager,)page_html_list.append(last_page)# 尾部添加标签page_html_list.append('''''')return ''.join(page_html_list)自定义分页器使用后端from utils.mypage import Paginationdef get_book(request):book_list = models.Book.objects.all()current_page = request.GET.get("page",1)all_count = book_list.count()page_obj = Pagination(current_page=current_page,all_count=all_count,per_page_num=10)page_queryset = book_list[page_obj.start:page_obj.end]return render(request,'booklist.html',locals())前端{% for book in page_queryset %} {{ book.title }} {% endfor %}{{ page_obj.page_html|safe }}
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