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Python Django 簡(jiǎn)單分頁(yè)的實(shí)現(xiàn)代碼解析

更新時(shí)間：2019年08月21日 11:01:23 作者：Sch01aR#

這篇文章主要介紹了Python Django 簡(jiǎn)單分頁(yè)的實(shí)現(xiàn)代碼解析,文中通過(guò)示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值,需要的朋友可以參考下

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"

批量創(chuàng)建 106 條數(shù)據(jù)

import os
if __name__ == '__main__':
  os.environ.setdefault("DJANGO_SETTINGS_MODULE", "mysite3.settings")
  import django
  django.setup()
  from app01 import models
  # 106 個(gè)書籍對(duì)象
  objs = [models.Book(title="《Python 的故事第{}版》".format(i)) for i in range(116)]
  # 在數(shù)據(jù)庫(kù)中批量創(chuàng)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):
  # 從 URL 中取參數(shù)
  page_num = request.GET.get("page")
  print(page_num, type(page_num))
  page_num = int(page_num)
 
  # 定義兩個(gè)變量保存數(shù)據(jù)從哪兒取到哪兒
  data_start = (page_num-1)*10
  data_end = page_num*10
 
  # 書籍總數(shù)
  total_count = models.Book.objects.all().count()
 
  # 每一頁(yè)顯示多少條數(shù)據(jù)
  per_page = 10
 
  # 總共需要多少頁(yè)碼來(lái)顯示
  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 的分頁(yè)代碼
  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>書籍列表</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>序號(hào)</th>
      <th>id</th>
      <th>書名</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>

運(yùn)行結(jié)果：