Django-分页器
# Create your views here.
# 导入render和HttpResponse模块
from django.shortcuts import render, HttpResponse
# 导入Paginator,EmptyPage和PageNotAnInteger模块
from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
# 从Django项目的应用中导入模块
from app01.models import *
from app01 import models
def create(request):
booklist = []
for i in range(100):
booklist.append(models.Book(title="book" + str(i), price=20 + i * i))
models.Book.objects.bulk_create(booklist)
return HttpResponse("ok")
def index(request):
# 获取Book数据表中的所有记录
book_list = Book.objects.all()
# 生成paginator对象,定义每页显示10条记录
paginator = Paginator(book_list, 10)
# 从前端获取当前的页码数,默认为1
page = request.GET.get('page', 1)
# 把当前的页码数转换成整数类型
currentPage = int(page)
try:
print(page)
book_list = paginator.page(page) # 获取当前页码的记录
except PageNotAnInteger:
book_list = paginator.page(1) # 如果用户输入的页码不是整数时,显示第1页的内容
except EmptyPage:
book_list = paginator.page(paginator.num_pages) # 如果用户输入的页数不在系统的页码列表中时,显示最后一页的内容
return render(request, "index.html", locals())
from django.conf.urls import url
from django.contrib import admin
from app01 import views
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^create/', views.create),
url(r'^index/', views.index),
{% load staticfiles %} <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> </head> <body> <div class="container "> <div class="table-responsive"> <table class="table table-hover"> <thead> <tr> <th>名称</th> <th>价格</th> </tr> </thead> <tbody> {% for book in book_list %} <tr> <td >{{ book.title }} </td> <td>{{ book.price }}</td> </tr> {% endfor %} </tbody> </table> </div> <ul class="pagination " id="pager "> {#上一页按钮开始#} {# 如果当前页有上一页#} {% if book_list.has_previous %} {# 当前页的上一页按钮正常使用#} <li class="previous"><a href="./?page={{ book_list.previous_page_number }}">上一页</a></li> {% else %} {# 当前页的不存在上一页时,上一页的按钮不可用#} <li class="previous disabled"><a href="#">上一页</a></li> {% endif %} {#上一页按钮结束#} {# 页码开始#} {% for num in paginator.page_range %} {% if num == currentPage %} <li class="item active"><a href="./?page={{ num }}">{{ num }}</a></li> {% else %} <li class="item"><a href="./?page={{ num }}">{{ num }}</a></li> {% endif %} {% endfor %} {#页码结束#} {# 下一页按钮开始#} {% if book_list.has_next %} <li class="next"><a href="./?page={{ book_list.next_page_number }}">下一页</a></li> {% else %} <li class="next disabled"><a href="#">下一页</a></li> {% endif %} {# 下一页按钮结束#} </ul> </div> </body> </html>
from django.db import models
import django.utils.timezone as timezone
# Create your models here.
class Book(models.Model):
title = models.CharField(max_length=32)
price = models.DecimalField(max_digits=6, decimal_places=2)
create_time = models.DateField(default=timezone.now())
memo = models.CharField(max_length=32, default="")
效果图：
批量插入数据
# booklist = []
# for i in range(100):
# booklist.append(models.Book(name="book" + str(i), price=20 + i * i))
#
# models.Book.objects.bulk_create(booklist)
当有很多页时
# Create your views here. # 导入render和HttpResponse模块 from django.shortcuts import render, HttpResponse # 导入Paginator,EmptyPage和PageNotAnInteger模块 from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger # 从Django项目的应用中导入模块 from app01.models import * from app01 import models def create(request): booklist = [] for i in range(100): booklist.append(models.Book(title="books" + str(i), price=20 + i * i)) models.Book.objects.bulk_create(booklist) return HttpResponse("ok") def index(request): # 获取Book数据表中的所有记录 book_list = Book.objects.all() # 生成paginator对象,定义每页显示10条记录 paginator = Paginator(book_list, 10) # 从前端获取当前的页码数,默认为1 page = request.GET.get('page', 1) # 把当前的页码数转换成整数类型 currentPage = int(page) if paginator.num_pages > 30: if currentPage - 5 < 1: pageRange = range(1, 11) elif currentPage + 5 > paginator.num_pages: pageRange = range(currentPage - 5, paginator.num_pages + 1) else: pageRange = range(currentPage - 5, currentPage + 5) else: pageRange = paginator.page_range try: print(page) book_list = paginator.page(page) # 获取当前页码的记录 except PageNotAnInteger: book_list = paginator.page(1) # 如果用户输入的页码不是整数时,显示第1页的内容 except EmptyPage: book_list = paginator.page(paginator.num_pages) # 如果用户输入的页数不在系统的页码列表中时,显示最后一页的内容 return render(request, "index.html", locals())
{% load staticfiles %} <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> </head> <body> <div class="container "> <div class="table-responsive"> <table class="table table-hover"> <thead> <tr> <th>名称</th> <th>价格</th> </tr> </thead> <tbody> {% for book in book_list %} <tr> <td >{{ book.title }} </td> <td>{{ book.price }}</td> </tr> {% endfor %} </tbody> </table> </div> <ul class="pagination " id="pager "> {#上一页按钮开始#} {# 如果当前页有上一页#} {% if book_list.has_previous %} {# 当前页的上一页按钮正常使用#} <li class="previous"><a href="./?page={{ book_list.previous_page_number }}">上一页</a></li> {% else %} {# 当前页的不存在上一页时,上一页的按钮不可用#} <li class="previous disabled"><a href="#">上一页</a></li> {% endif %} {#上一页按钮结束#} {# 页码开始#} {% for num in pageRange %} {% if num == currentPage %} <li class="item active"><a href="./?page={{ num }}">{{ num }}</a></li> {% else %} <li class="item"><a href="./?page={{ num }}">{{ num }}</a></li> {% endif %} {% endfor %} {#页码结束#} {# 下一页按钮开始#} {% if book_list.has_next %} <li class="next"><a href="./?page={{ book_list.next_page_number }}">下一页</a></li> {% else %} <li class="next disabled"><a href="#">下一页</a></li> {% endif %} {# 下一页按钮结束#} </ul> </div> </body> </html>
效果图
