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django的分页
一.分页器的函数封装
# 分页计算最小页和最大页 def page_list_return(total, current=1): ‘‘‘ 分页,返回本次分页的最小页数和最大页数列表 :param total: :param current: :return: ‘‘‘ min_page = current - 2 if current - 4 > 0 else 1 max_page = current + 4 if current + 4 < total else total return list(range(min_page, max_page + 1)) # 分页器 def pages(post_objects, request): ‘‘‘ 分页公共函数,返回分页的对象元组 :param post_objects: :param request: :return: ‘‘‘ # 分页器 paginator = Paginator(post_objects, 10) try: # 本页页码 current_page = int(request.GET.get(‘page‘, ‘1‘)) except ValueError: current_page = 1 # 所有页码 page_range = page_list_return(len(paginator.page_range), current_page) try: # 本页对象 page_objects = paginator.page(current_page) except (EmptyPage, InvalidPage): page_objects = paginator.page(paginator.num_pages) if current_page >= 5: show_first = 1 else: show_first = 0 if current_page <= (len(paginator.page_range) - 3): show_end = 1 else: show_end = 0 # 所有对象,分页器,本页对象,所有页码,本业页码,是否显示第一页,是否显示最后一页 return post_objects, paginator, page_objects, page_range, current_page, show_first, show_end
二.view页面的传递
def menu_list(request): header_title, path = ‘菜单详情‘, ‘菜单详情‘ menus_list = MenuInfo.objects.all() menus_list, p, page_obj, page_range, current_page, show_first, show_end = pages(menus, request) return render(request, ‘menu/menu_list.html‘,locals())
三.前端页面的代码
<div class="col-sm-7"> <div class="dataTables_paginate paging_simple_numbers" id="editable_paginate"> <ul class="pagination"> {% if page_obj.has_previous %} <li class="paginate_button previous " id="editable_previous"> <a class="page" href="?page={{ page_obj.previous_page_number }}" aria-controls="editable" data-dt-idx="0" tabindex="0">上一页</a> </li> {% else %} <li class="paginate_button previous disabled" id="editable_previous"> <a class="page" aria-controls="example1" data-dt-idx="0" tabindex="0">上一页</a> </li> {% endif %} {% ifequal show_first 1 %} <li class="paginate_button"> <a class="page" href="?page=1" aria-controls="editable" data-dt-idx="1" tabindex="0">1..</a> </li> {% endifequal %} {% for page in page_range %} {% ifequal current_page page %} <li class="paginate_button active"> <a class="page" href="?page={{ page }}" aria-controls="editable" data-dt-idx="1" tabindex="0" title="第{{ page }}页">{{ page }}</a> </li> {% else %} <li class="paginate_button"> <a class="page" href="?page={{ page }}" aria-controls="editable" data-dt-idx="1" tabindex="0" title="第{{ page }}页">{{ page }}</a> </li> {% endifequal %} {% endfor %} {% ifequal show_end 1 %} <li class="paginate_button"> <a class="page" href="?page={{ p.num_pages }}" aria-controls="editable" data-dt-idx="1" tabindex="0" title="第{{ page }}页">...{{ p.num_pages }}</a> </li> {% endifequal %} {% if page_obj.has_next%} <li class="paginate_button next " id="editable_next"> <a class="page" href="?page={{ page_obj.next_page_number }}" aria-controls="editable" data-dt-idx="1" tabindex="0">下一页</a> </li> {% else %} <li class="paginate_button next disabled " id="editable_next"> <a class="page" aria-controls="editable" data-dt-idx="1" tabindex="0">下一页</a> </li> {% endif %} </ul> </div> </div>
django的分页
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