用法
###在视图函数中，
def samplerlist(request):
search_dict = {}
search_key = request.GET.get('q', '')
if search_key:
search_dict["key"] = search_key
data = models.xxx.objects.filter(**search_dict).order_by('-id')
page_object = Pagination(request, data, )
context = {
'data': page_object.queryset,
'search_key': search_key,
'page_string': page_object.html()
}
###在 模板页面中
{{ page_string }}
from django.utils.safestring import mark_safe
import copy
class Pagination(object):
def __init__(self, request, queryset, page_param='page', page_size=10, page_plus=5, show_prev_next=True,
show_first_end=True):
"""
:param request:页面request
:param queryset: 未分页前的dataset
:param page_param: 分页参数名
:param page_size:分页大小
:param page_plus: 显示当前页的前后几页
:param show_prev_next:是否显示上一页和下一页
:param show_first_end:是否显示首页和尾页
"""
query_dict=copy.deepcopy(request.GET)
query_dict._mutable=True
self.query_dict=query_dict
page = request.GET.get(page_param, '1')
if page.isdecimal():
page = int(page)
else:
page = 1
self.page = page
self.page_size = page_size
self.page_param=page_param
self.page_plus = page_plus
self.start = (page - 1) * page_size
self.end = page * page_size
self.show_prev_next = show_prev_next
self.show_first_end = show_first_end
self.queryset = queryset[self.start: self.end]
self.total_count = queryset.count()
total_page_count, div = divmod(self.total_count, self.page_size)
if div:
total_page_count += 1
self.total_page_count = total_page_count
def html(self):
if self.total_page_count <= 2 * self.page_plus + 1:
"""数据小于11页"""
start_page = 1
end_page = self.total_page_count
else:
"""数据大于等于11页"""
if self.page <= self.page_plus:
"""当前页小于plus时"""
start_page = 1
end_page = 2 * self.page_plus + 1
else:
# 当前页大于plus
# 如果当前前码加上plus超出了所有页码
if (self.page + self.page_plus) > self.total_page_count:
start_page = self.total_page_count - 2 * self.page_plus
end_page = self.total_page_count
else:
start_page = self.page - self.page_plus
end_page = self.page + self.page_plus
page_str_list = ['<ul class="pagination">']
if self.page > 1:
if self.show_first_end:
self.query_dict.setlist(self.page_param, [1])
page_str_list.append('<li><a href="?{}">首页</a></li>'.format(self.query_dict.urlencode()))
if self.show_prev_next:
self.query_dict.setlist(self.page_param, [self.page - 1])
page_str_list.append('<li><a href="?{}">上一页</a></li>'.format(self.query_dict.urlencode()))
else:
if self.show_first_end:
page_str_list.append('<li class="disabled"><span>首页</span></li>')
if self.show_prev_next:
page_str_list.append('<li class="disabled"><span>上一页</span></li>')
for i in range(start_page, end_page + 1):
if i == self.page: # 当前页
ele = '<li class="active"><span>{}</span></li>'.format(i)
else:
self.query_dict.setlist(self.page_param, [i])
ele = '<li><a href="?{}">{}</a></li>'.format(self.query_dict.urlencode(), i)
page_str_list.append(ele)
if self.page < self.total_page_count:
if self.show_prev_next:
self.query_dict.setlist(self.page_param, [self.page + 1])
page_str_list.append('<li><a href="?{}">下一页</a></li>'.format(self.query_dict.urlencode()))
if self.show_first_end:
self.query_dict.setlist(self.page_param, [self.total_page_count])
page_str_list.append('<li><a href="?{}">尾页</a></li>'.format(self.query_dict.urlencode()))
else:
if self.show_prev_next:
page_str_list.append('<li class="disabled"><span>下一页</span></li>')
if self.show_first_end:
page_str_list.append('<li class="disabled"><span>尾页</span></li>')
# 跳转
# search_string = """
# <li>
# <form style="float:left;margin-left:-1px" method="get">
# <input name="page"
# style="position:relative;float:left;display:initial-block;width: 80px;border-radius: 0"
# type="text" class="form-control" placeholder="页码">
# <button style="border-radius: 0" class="btn btn-default" type="submit">跳转</button>
# </form>
# </li>
# """
# page_str_list.append(search_string)
page_str_list.append('</ul>')
page_string = "".join(page_str_list)
return mark_safe(page_string)
评论