这篇文章主要介绍了Python Django 添加首页尾页上一页下一页代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
添加首页和尾页：
views.py：

from django.shortcuts import render
from app01 import models
def book_list(request):

从 URL 中取参数

page_num = request.GET.get(“page”)
print(page_num, type(page_num))
page_num = int(page_num)

定义两个变量保存数据从哪儿取到哪儿

data_start = (page_num - 1) * 10
data_end = page_num * 10

书籍总数

total_count = models.Book.objects.all().count()

每一页显示多少条数据

per_page = 10

总共需要多少页码来显示

total_page, m = divmod(total_count, per_page)

页面上最多展示的页码

max_page = 11
half_max_page = max_page // 2

页面上展示的页码的开始页

page_start = page_num - half_max_page

页面上展示的页码的结束页

page_end = page_num + half_max_page

如果当前页减一半比 1 小

if page_start <= 1:
page_start = 1
page_end = max_page

如果当前页加一半比总页码还大

if page_end > total_page:
page_end = total_page
page_start = total_page - max_page + 1

如果还有数据

if m:
total_page += 1
all_book = models.Book.objects.all()[data_start:data_end]

拼接 html 的分页代码

html_list = []

添加首页按钮

html_list.append(‘

首页
’)

展示的页码

for i in range(page_start, page_end + 1):
tmp = ‘
{0}
’.format(i)
html_list.append(tmp)

添加尾页按钮

html_list.append(‘
尾页

’.format(total_page))
page_html = “”.join(html_list) # 拼接 html 的分页代码
return render(request, “book_list.html”, {“books”: all_book, “page_html”: page_html})

book_list.html：<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>书籍列表</title><link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" >
</head>
<body>
<div class="container"> <table class="table table-bordered"><thead><tr><th>序号</th><th>id</th><th>书名</th></tr></thead><tbody>{% for book in books %}<tr><td>{{ forloop.counter }}</td><td>{{ book.id }}</td><td>{{ book.title }}</td></tr>{% endfor %}</tbody></table> <nav aria-label="Page navigation"><ul class="pagination"><li>{{ page_html|safe }}</li></ul></nav>
</div>
</body>
</html>

views.py：

from django.shortcuts import render
from app01 import models
def book_list(request):# 从 URL 中取参数page_num = request.GET.get("page")print(page_num, type(page_num))page_num = int(page_num) # 定义两个变量保存数据从哪儿取到哪儿data_start = (page_num - 1) * 10data_end = page_num * 10# 书籍总数total_count = models.Book.objects.all().count() # 每一页显示多少条数据per_page = 10# 总共需要多少页码来显示total_page, m = divmod(total_count, per_page) # 页面上最多展示的页码max_page = 11half_max_page = max_page // 2# 页面上展示的页码的开始页page_start = page_num - half_max_page# 页面上展示的页码的结束页page_end = page_num + half_max_page # 如果当前页减一半比 1 小if page_start <= 1:page_start = 1page_end = max_page# 如果当前页加一半比总页码还大if page_end > total_page:page_end = total_pagepage_start = total_page - max_page + 1# 如果还有数据if m:total_page += 1all_book = models.Book.objects.all()[data_start:data_end] # 拼接 html 的分页代码html_list = [] # 添加首页按钮html_list.append('<li><a href="/book_list/?page=1" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a></li>') # 如果是第一页，就没有上一页if page_num <= 1:html_list.append('<li class="disabled"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">«</span></a></li>'.format(page_num-1))else:# 加一个上一页的标签html_list.append('<li><a href="/book_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">«</span></a></li>'.format(page_num-1)) # 展示的页码for i in range(page_start, page_end + 1):# 给当前页添加 activeif i == page_num:tmp = '<li class="active"><a href="/book_list/?page={0}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{0}</a></li>'.format(i)else:tmp = '<li><a href="/book_list/?page={0}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{0}</a></li>'.format(i)html_list.append(tmp) # 如果是最后一页，就没有下一页if page_num >= total_page:html_list.append('<li class="disabled"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">»</span></a></li>')else:html_list.append('<li><a href="/book_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">»</span></a></li>'.format(page_num+1)) # 添加尾页按钮html_list.append('<li><a href="/book_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >尾页</a></li>'.format(total_page))page_html = "".join(html_list) # 拼接 html 的分页代码return render(request, "book_list.html", {"books": all_book, "page_html": page_html})

book_list.html：

<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>书籍列表</title><link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css" rel="external nofollow" rel="external nofollow" >
</head>
<body>
<div class="container"> <table class="table table-bordered"><thead><tr><th>序号</th><th>id</th><th>书名</th></tr></thead><tbody>{% for book in books %}<tr><td>{{ forloop.counter }}</td><td>{{ book.id }}</td><td>{{ book.title }}</td></tr>{% endfor %} </tbody></table><nav aria-label="Page navigation"><ul class="pagination"><li>{{ page_html|safe }}</li></ul></nav>
</div>
</body>
</html>

运行结果：
后续改进：

处理用户传给 url 的 page 参数异常的值的情况

例如：

访问，http://127.0.0.1:8888/book_list/?page=a

访问，http://127.0.0.1:8888/book_list/?page=-1

都会出错

改进：

from django.shortcuts import render
from app01 import models
def book_list(request):# 从 URL 中取参数page_num = request.GET.get("page")print(page_num, type(page_num)) # page_num 为 str 类型# 书籍总数total_count = models.Book.objects.all().count() # 每一页显示多少条数据per_page = 10# 总共需要多少页码来显示total_page, m = divmod(total_count, per_page) # 如果还有数据if m:total_page += 1try:page_num = int(page_num)# 如果输入的页码数超过了最大的页码数，默认返回最后一页if page_num > total_page:page_num = total_page# 如果输入的页码数小于 1，则返回第一页if page_num < 1:page_num = 1except Exception as e:# 当输入的页码不是正经数字的时候 默认返回第一页的数据page_num = 1# 定义两个变量保存数据从哪儿取到哪儿data_start = (page_num - 1) * 10data_end = page_num * 10# 页面上最多展示的页码max_page = 11half_max_page = max_page // 2# 页面上展示的页码的开始页page_start = page_num - half_max_page# 页面上展示的页码的结束页page_end = page_num + half_max_page # 如果当前页减一半比 1 小if page_start <= 1:page_start = 1page_end = max_page# 如果当前页加一半比总页码还大if page_end > total_page:page_end = total_pagepage_start = total_page - max_page + 1all_book = models.Book.objects.all()[data_start:data_end] # 拼接 html 的分页代码html_list = [] # 添加首页按钮html_list.append('<li><a href="/book_list/?page=1" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a></li>') # 如果是第一页，就没有上一页if page_num <= 1:html_list.append('<li class="disabled"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">«</span></a></li>'.format(page_num-1))else:# 加一个上一页的标签html_list.append('<li><a href="/book_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">«</span></a></li>'.format(page_num-1))# 展示的页码for i in range(page_start, page_end + 1):# 给当前页添加 activeif i == page_num:tmp = '<li class="active"><a href="/book_list/?page={0}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{0}</a></li>'.format(i)else:tmp = '<li><a href="/book_list/?page={0}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{0}</a></li>'.format(i)html_list.append(tmp) # 如果是最后一页，就没有下一页if page_num >= total_page:html_list.append('<li class="disabled"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">»</span></a></li>')else:html_list.append('<li><a href="/book_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">»</span></a></li>'.format(page_num+1)) # 添加尾页按钮html_list.append('<li><a href="/book_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >尾页</a></li>'.format(total_page))page_html = "".join(html_list) # 拼接 html 的分页代码return render(request, "book_list.html", {"books": all_book, "page_html": page_html})

如果数据库中的数据数少于 max_page，则会显示负数的页数

例如数据库中只有 21 条数据：
改进：

from django.shortcuts import render
from app01 import models
def book_list(request):# 从 URL 中取参数page_num = request.GET.get("page")print(page_num, type(page_num)) # page_num 为 str 类型 # 书籍总数total_count = models.Book.objects.all().count() # 每一页显示多少条数据per_page = 10# 总共需要多少页码来显示total_page, m = divmod(total_count, per_page) # 如果还有数据if m:total_page += 1try:page_num = int(page_num)# 如果输入的页码数超过了最大的页码数，默认返回最后一页if page_num > total_page:page_num = total_page# 如果输入的页码数小于 1，则返回第一页if page_num < 1:page_num = 1except Exception as e:# 当输入的页码不是正经数字的时候 默认返回第一页的数据page_num = 1# 定义两个变量保存数据从哪儿取到哪儿data_start = (page_num - 1) * 10data_end = page_num * 10# 页面上最多展示的页码max_page = 11# 如果总页码数小于页面上最多展示的页码if total_page < max_page:max_page = total_pagehalf_max_page = max_page // 2# 页面上展示的页码的开始页page_start = page_num - half_max_page# 页面上展示的页码的结束页page_end = page_num + half_max_page # 如果当前页减一半比 1 小if page_start <= 1:page_start = 1page_end = max_page# 如果当前页加一半比总页码还大if page_end > total_page:page_end = total_pagepage_start = total_page - max_page + 1all_book = models.Book.objects.all()[data_start:data_end] # 拼接 html 的分页代码html_list = [] # 添加首页按钮html_list.append('<li><a href="/book_list/?page=1" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</a></li>') # 如果是第一页，就没有上一页if page_num <= 1:html_list.append('<li class="disabled"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">«</span></a></li>'.format(page_num-1))else:# 加一个上一页的标签html_list.append('<li><a href="/book_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">«</span></a></li>'.format(page_num-1))# 展示的页码for i in range(page_start, page_end + 1):# 给当前页添加 activeif i == page_num:tmp = '<li class="active"><a href="/book_list/?page={0}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{0}</a></li>'.format(i)else:tmp = '<li><a href="/book_list/?page={0}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{0}</a></li>'.format(i)html_list.append(tmp) # 如果是最后一页，就没有下一页if page_num >= total_page:html_list.append('<li class="disabled"><a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">»</span></a></li>')else:html_list.append('<li><a href="/book_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><span aria-hidden="true">»</span></a></li>'.format(page_num+1)) # 添加尾页按钮html_list.append('<li><a href="/book_list/?page={}" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >尾页</a></li>'.format(total_page)) page_html = "".join(html_list) # 拼接 html 的分页代码return render(request, "book_list.html", {"books": all_book, "page_html": page_html})

运行结果：

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