Python Django 简单分页的实现代码解析

2019-11-25 11:54:34

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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 modelsclass 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 osif __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 renderfrom 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：