分页器代码说明

import os
import random
# 需要导入分页器类from django.core.paginator import Paginator, EmptyPage# 导入配置django配置文件
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'dailyfresh.settings')iterable_obj = [random.randint(1, 100) for i in range(45)]   # 必须为可迭代对象，比如 QuerySet, list, tuple
print(iterable_obj)
# 实例化分页器
paginator = Paginator(object_list=iterable_obj, per_page=20)# 每页显示数据量
print("每页显示数据量:%s" % paginator.per_page)
# 总页数
print("总页数:%s" % paginator.num_pages)
# 数据总数
print("数据总数:%s" % paginator.count)# 获取某页的page对象，如果为不存在的页码会抛EmptyPage异常
try:page_obj = paginator.page(random.randint(1, 4))
except EmptyPage:page_obj = paginator.page(1)print("[异常]获取page对象超出范围")
print(page_obj)
print("通过page对象获取分页器实例", page_obj.paginator)# 获取当前页码
print("获取当前页码:%s" % page_obj.number)
# 获取当前页内容
print("获取当前页内容:%s" % page_obj.object_list)# 校验是否有上一页，返回布尔值
print("是否有上一页：%s" % page_obj.has_previous())
# 上一页页码。如果无上一页，则抛错
print("上一页页码：%s" % page_obj.previous_page_number())# 校验是否有下一页，返回布尔值
print("是否有下一页:%s" % page_obj.has_next())
# 下一页页码。如果无下一页，则抛错
print("下一页页码：%s" % page_obj.next_page_number())

执行结果如下：

简单demo

定义视图

from django.views import Viewclass DemoView(View):def get(self, request, page_num):iterable_obj = [i for i in range(45)]# 对数据进行分页paginator = Paginator(iterable_obj, 10)cur_page = paginator.page(page_num)content = {"cur_page": cur_page,}return render(request, "demo.html", content)

添加路由

from django.urls import re_path, path
from apps.goods import views
# 定义命名空间
app_name = "goods"urlpatterns = [re_path("demo_list/(?P<page_num>\d+)", views.DemoView.as_view(), name="demo_list")
]

添加demo.html模板

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>Title</title>
</head>
<body>
<!-- 展示每页信息 -->
<ul>{% for v in cur_page.object_list %}<li>{{v}}</li>{% endfor %}
</ul><!-- 生成页码信息 -->
<div>{% if cur_page.has_previous %}<a href="{% url 'goods:demo_list' cur_page.previous_page_number %}">上一页</a>{% endif %}{% for page_num in cur_page.paginator.page_range %}<a href="{% url 'goods:demo_list' page_num %}">{{ page_num }}</a>{% endfor %}{% if cur_page.has_next %}<a href="{% url 'goods:demo_list' cur_page.next_page_number %}">下一页</a>{% endif %}
</div>
</body>
</html>

界面第5页展示如下：