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這期內容當中小編將會給大家帶來有關使用Django如何實現一個分頁與搜索功能,文章內容豐富且以專業的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
第一步,寫路由:為了清晰,這里只給出主頁和展示頁面的路由。
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 = [ # 主頁 path('', views.index), # 訪問他人信息入口,分頁展示 path('other/profile', views.request_user), urlpatterns += static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT) urlpatterns += staticfiles_urlpatterns()
第二步,寫視圖:這里做了訪問限制,登錄才能訪問
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): # 實現搜索 key = request.GET.get('key') all_users = UserInfo.objects.filter(cate="買家").all() userlist = [] # 如果前端傳入關鍵字,才會進行檢索,否則顯示全部買家 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 = '暫無數據' return render(request, 'Myapp/userlist.html', {'info': info})
分頁的原理是用到了django自帶的分頁組件
需要注意的是,搜索的關鍵字傳參,用的是GET請求,而不是POST請求
簡單來說,就是先判斷前端頁面是否用搜索框搜索了關鍵字,如果搜索了,那么這個詞會被
key = request.GET.get('key')
賦值給key,然后進行后續判斷處理即可。
如果沒有,就正常展示我們需要展示的。
分頁的原理。
可以去看這個組件的文檔介紹。
如果返回的key檢索不到結果,返回空數據頁,并提醒。
html代碼:
{% 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>主頁</span></a></li> <li><a href='http://127.0.0.1:8000/about'><span>關于我們</span></a></li> <li><a href='http://127.0.0.1:8000/show_detail'><span>每日看價</span></a></li> <li><a href='http://127.0.0.1:8000/other/profile'><span>找個買家</span></a></li> <li class='last'><a href='http://127.0.0.1:8000/contact'><span>聯系我們</span></a></li> </ul> </div> <form > {% csrf_token %} <label> <div class="form-group"> <input type="search" class="form-control" name="key" placeholder="您可輸入所在城市以檢索買家"> </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>昵稱</td> <td>地址</td> <td>最近活躍</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" >下一頁</a></li> {% endif %} </ul> </div> <!--////////////////////////////////////Footer--> </div> {% if info %} <script> window.alert('{{ info }}'); </script> {% endif %} </body> </html>
效果:
主頁主要功能部分:
信息頁分頁與搜索:搜索框和分頁都是存在的,目前是第一頁:http://127.0.0.1:8000/other/profile
第二頁:http://127.0.0.1:8000/other/profile?page=2
搜索測試:
搜索無效信息測試:
上述就是小編為大家分享的使用Django如何實現一個分頁與搜索功能了,如果剛好有類似的疑惑,不妨參照上述分析進行理解。如果想知道更多相關知識,歡迎關注億速云行業資訊頻道。
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