Django框架实现的分页demo示例

(编辑：jimmy 日期: 2024/11/16 浏览：2)

本文实例讲述了Django框架实现的分页。分享给大家供大家参考，具体如下：

首先初始化model,建表

class Book(models.Model):
  name = models.CharField(max_length=20)
  def __str__(self):
    return self.name
  class Meta:
    db_table = 'books'

然后用pycharm的数据库模块可视化插入

分页思路

url传递参数http://127.0.0.1:8000/books/"htmlcode">

def books(request):
  #取从url传递的参数
  page_num = request.GET.get('page')
  page_num = int(page_num)
  start = (page_num-1)*5
  end = page_num*5
  #总页码数是"/books/" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{}</li>'.format(i,i)
    html_str_list.append(tmp)
  page_html = "".join(html_str_list)
  return render(request,'books.html',{'books':all_books,'total_page':total,'page_html':page_html})

拿到数据总量的值,每一页的数量为5,如果有余数则total+1也就是增加一个页面.

建立一个列表,去拼接a标签,最后传递给前端

前端

前端的样式用到了boottrap,可以直接看文档.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>书记列表</title>
  <link rel="stylesheet" href="/static/bootstrap/css/bootstrap.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.name }}</td>
      </tr>
    {% endfor %}
    </tbody>
  </table>
<nav aria-label="Page navigation">
 <ul class="pagination">
  <li>
   <a href="#" rel="external nofollow" rel="external nofollow" aria-label="Previous">
    <span aria-hidden="true">&laquo;</span>
   </a>
  </li>
   {{ page_html|safe }}
  <li>
   <a href="#" rel="external nofollow" rel="external nofollow" aria-label="Next">
    <span aria-hidden="true">&raquo;</span>
   </a>
  </li>
 </ul>
</nav>
</div>
</body>
</html>

{{ page_html|safe }}

传递过来的page_html要用safe过滤器,不然无法转移成html.

最终效果

分页优化

设置一个首页一个尾页,以及显示局部的页面

def books(request):
  # 取从url传递的参数
  page_num = request.GET.get('page')
  page_num = int(page_num)
  start = (page_num - 1) * 5
  end = page_num * 5
  # 总页码数是"/books/" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >首页</li>'.format(1,1))
  for i in range(page_start, page_end+1):
    tmp = '<li><a href="/books/" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >{}</li>'.format(i, i)
    html_str_list.append(tmp)
  html_str_list.append('<li><a href="/books/" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >最后一页</li>'.format(total))
  page_html = "".join(html_str_list)
  return render(request, 'books.html', {'books': all_books, 'total_page': total, 'page_html': page_html})

希望本文所述对大家基于Django框架的Python程序设计有所帮助。

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