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Python Django 简单分页的实现代码解析

更新时间:2020-07-25 23:12:01 作者:startmvc
这篇文章主要介绍了PythonDjango简单分页的实现代码解析,文中通过示例代码介绍的非常详细

这篇文章主要介绍了Python Django 简单分页的实现代码解析,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

models.py:


from django.db import models
class Book(models.Model):
 title = models.CharField(max_length=32)
 def __str__(self):
 return self.title
 class Meta:
 db_table = "books"

批量创建 106 条数据


import os
if __name__ == '__main__':
 os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite3.settings")
 import django
 django.setup()
 from app01 import models
 # 106 个书籍对象
 objs = [models.Book(title="《Python 的故事第{}版》".format(i)) for i in range(116)]
 # 在数据库中批量创建, 10 次一提交
 models.Book.objects.bulk_create(objs, 10)

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)
 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 = []
 for i in range(1, total_page+1):
 tmp = '<li><a href="/book_list/?page={0}" rel="external nofollow" >{0}</a></li>'.format(i)
 html_list.append(tmp) 
 page_html = "".join(html_list) 
 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" >
</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">
 {{ page_html|safe }}
 </ul>
 </nav> 
</div>
</body>
</html>

运行结果:

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

python django 简单分页 实现