这期内容当中小编将会给大家带来有关使用Django如何实现一个分页与搜索功能,文章内容丰富且以专业的角度为大家分析和叙述,阅读完这篇文章希望大家可以有所收获。
第一步,写路由:为了清晰,这里只给出主页和展示页面的路由。
urls.py:
from django.urls import path from . import views from django.conf.urls.static import static from django.conf import settings from django.contrib.staticfiles.urls import staticfiles_urlpatterns # from django.contrib import staticfiles urlpatterns = [ # 主页 path('', views.index), # 访问他人信息入口,分页展示 path('other/profile', views.request_user), urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT) urlpatterns += staticfiles_urlpatterns()
第二步,写视图:这里做了访问限制,登录才能访问
views.py:
from django.contrib.auth.decorators import login_required from django.shortcuts import render, redirect from django.http import HttpResponseRedirect, HttpResponse from django.contrib.auth import authenticate, login, logout from .models import UserInfo, Email_Message, Wastes from django.contrib.auth.models import AnonymousUser from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger @login_required(login_url='/tologin') def request_user(request): # 实现搜索 key = request.GET.get('key') all_users = UserInfo.objects.filter(cate="买家").all() userlist = [] # 如果前端传入关键字,才会进行检索,否则显示全部买家 if key: for user in all_users: if key in user.address: userlist.append(user) all_users = userlist if all_users: paginator = Paginator(all_users, 2) page = request.GET.get('page') try: contacts = paginator.page(page) except PageNotAnInteger: contacts = paginator.page(1) except EmptyPage: contacts = paginator.page(paginator.num_pages) return render(request, 'Myapp/userlist.html', {'contacts': contacts}) else: info = '暂无数据' return render(request, 'Myapp/userlist.html', {'info': info})
分页的原理是用到了django自带的分页组件
需要注意的是,搜索的关键字传参,用的是GET请求,而不是POST请求
简单来说,就是先判断前端页面是否用搜索框搜索了关键字,如果搜索了,那么这个词会被
key = request.GET.get('key')
赋值给key,然后进行后续判断处理即可。
如果没有,就正常展示我们需要展示的。
分页的原理。
可以去看这个组件的文档介绍。
如果返回的key检索不到结果,返回空数据页,并提醒。
html代码:
{% load static %} <!--[if lt IE 7 ]><html class="ie ie6" lang="en"> <![endif]--> <!--[if IE 7 ]><html class="ie ie7" lang="en"> <![endif]--> <!--[if IE 8 ]><html class="ie ie8" lang="en"> <![endif]--> <!--[if (gte IE 9)|!(IE)]><!--> <html lang="en"> <!--<![endif]--> <head> <!-- favicon.ico ================================================== --> <link rel='shortcut icon' href="{% static 'Myapp/img/favicon.con' %}" rel="external nofollow" type="image/x-icon"/> <!-- Basic Page Needs ================================================== --> <meta charset="utf-8"> <title>Detail</title> <meta name="description" content=""> <meta name="author" content=""> <!-- Mobile Specific Metas ================================================== --> <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"> <!-- CSS ================================================== --> <link rel="stylesheet" href="{% static 'Myapp/css/zerogrid.css' %}" rel="external nofollow" > <link rel="stylesheet" href="{% static 'Myapp/css/style.css' %}" rel="external nofollow" > <link rel="stylesheet" href="{% static 'Myapp/css/lightbox.css' %}" rel="external nofollow" > <!-- Custom Fonts --> <link href="{% static 'Myapp/assets/css/font-awesome.min.css' %}" rel="external nofollow" rel="stylesheet" type="text/css"> <link rel="stylesheet" href="{% static 'Myapp/css/menu.css' %}" rel="external nofollow" > <link rel="stylesheet" href="{% static 'Myapp/assets/css/bootstrap.min.css' %}" rel="external nofollow" > <script src="{% static 'Myapp/js/jquery1111.min.js' %}" type="text/javascript"></script> <script src="{% static 'Myapp/js/script.js' %}"></script> <!--[if lt IE 8]> <div style=' clear: both; text-align:center; position: relative;'> <a href="http://windows.microsoft.com/en-US/internet-explorer/Items/ie/home?ocid=ie6_countdown_bannercode" rel="external nofollow" > <img src="http://storage.ie6countdown.com/assets/100/images/banners/warning_bar_0000_us.jpg" border="0" height="42" width="820" alt="You are using an outdated browser. For a faster, safer browsing experience, upgrade for free today." /> </a> </div> <![endif]--> <!--[if lt IE 9]> <script src="js/html5.js"></script> <script src="js/css3-mediaqueries.js"></script> <![endif]--> </head> <body> <div class="wrap-body"> <!--////////////////////////////////////Header--> <header class="zerogrid"> <div class="logo"><img src="{% static 'Myapp/img/logo.png' %}" alt=""/></div> <div id='cssmenu' class="align-center"> <ul> <li><a href='http://127.0.0.1:8000/'><span>主页</span></a></li> <li><a href='http://127.0.0.1:8000/about'><span>关于我们</span></a></li> <li><a href='http://127.0.0.1:8000/show_detail'><span>每日看价</span></a></li> <li><a href='http://127.0.0.1:8000/other/profile'><span>找个买家</span></a></li> <li class='last'><a href='http://127.0.0.1:8000/contact'><span>联系我们</span></a></li> </ul> </div> <form > {% csrf_token %} <label> <div class="form-group"> <input type="search" class="form-control" name="key" placeholder="您可输入所在城市以检索买家"> </div> </label> <input class="btn btn-default" type="submit" value="搜索"> </form> </header> <!--////////////////////////////////////Container--> <div > <table class="table table-bordered"> <tr class="success"> <td>昵称</td> <td>地址</td> <td>最近活跃</td> </tr> {% for u in contacts %} <tr class="info"> <td><a href="http://127.0.0.1:8000/other/profile/{{ u.username }}" rel="external nofollow" >{{ u.username }}</a> </td> <td>{{ u.address }}</td> <td>{{ u.last_login }}</td> </tr> {% endfor %} </table> </div> <div class="navigation"> <ul> {% for pg in contacts.paginator.page_range %} {% if contacts.number == pg %} <li class="active"><a href="?page={{ pg }}" rel="external nofollow" rel="external nofollow" >{{ pg }}</a></li> {% else %} <li><a href="?page={{ pg }}" rel="external nofollow" rel="external nofollow" >{{ pg }}</a></li> {% endif %} {% endfor %} {% if contacts.has_next %} <li><a href="?page={{ contacts.next_page_number }}" rel="external nofollow" >下一页</a></li> {% endif %} </ul> </div> <!--////////////////////////////////////Footer--> </div> {% if info %} <script> window.alert('{{ info }}'); </script> {% endif %} </body> </html>
效果:
主页主要功能部分:
信息页分页与搜索:搜索框和分页都是存在的,目前是第一页:http://127.0.0.1:8000/other/profile
第二页:http://127.0.0.1:8000/other/profile?page=2
搜索测试:
搜索无效信息测试:
上述就是小编为大家分享的使用Django如何实现一个分页与搜索功能了,如果刚好有类似的疑惑,不妨参照上述分析进行理解。如果想知道更多相关知识,欢迎关注亿速云行业资讯频道。
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