Python Django 简单分页的实现代码解析

 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"

 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)

 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 = '
{0}
'.format(i) html_list.append(tmp) page_html = "".join(html_list) return render(request, "book_list.html", {"books": all_book, "page_html": page_html})

    
  {% for book in books %}  {% endfor %} 
 
 
 
序号
id
书名
 
{{ forloop.counter }}
{{ book.id }}
{{ book.title }}