通过使用bootstrap框架,并配合Django自带的Paginator分页组件即可实现简单的分页效果。
1.创建MyWeb项目
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python manage.py startapp MyWeb |
2.修改settings.py配置文件,导入我们的app的名字,去掉csrf这个选项
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# 屏蔽一项 MIDDLEWARE = [ #'django.middleware.csrf.CsrfViewMiddleware' ] # 新增一项 TEMPLATES = [ 'MyWeb.apps.MywebConfig' ] |
3.来urls.py里面写一条路由,名字就叫index/映射到views.index函数下处理此请求
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from MyWeb import views urlpatterns = [ path( 'admin/' , admin.site.urls), path( 'index/' , views.index) ] |
4.最后在myweb里面的views.py设置一个视图函数,最后运行
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from django.shortcuts import render from django.shortcuts import HttpResponse from MyWeb import models def index(requests): return HttpResponse( "abcd" ) |
5.配置数据库文件models.py并设置以下内容
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from django.db import models # 创建用户表 class User(models.Model): id = models.AutoField(primary_key = True ) username = models.CharField(max_length = 32 ) password = models.CharField(max_length = 32 ) |
6.更新数据库与数据表
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python manage.py makemigrations # 将你的数据库变动记录下来(并不会帮你创建表) python manage.py migrate # 将你的数据库变动正在同步到数据库中 |
7.增加一个新的view并使用rand()函数.
首先在urls.py中增加路由
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from django.contrib import admin from django.urls import path from MyWeb import views urlpatterns = [ path( 'admin/' , admin.site.urls), path( 'index/' ,views.index), path( 'rand/' ,views.rand) ] |
其次在view.py视图中增加生成函数.
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from django.shortcuts import render from django.shortcuts import HttpResponse from MyWeb import models import random # 首页 def index(requests): return HttpResponse( "abcd" ) # 生成测试数据 def rand(request): for i in range ( 1 , 1000 ): chars = [] pasd = [] for x in range ( 1 , 8 ): chars.append(random.choice( 'abcdefghijklmnopqrstuvwxyz' )) pasd.append(random.choice( '0987654321' )) user = "".join(chars) pwd = "".join(pasd) models.User.objects.create(username = user, password = pwd) return HttpResponse( "ok" ) |
启动django并访问http://127.0.0.1:8000/rand/等待数据生成结束.
8.在templates模板中,新增一个page.html页面。
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<!--name: page.html--> <!DOCTYPE html> < html lang = "en" > < head > < meta charset = "UTF-8" > < title >Title</ title > < link rel = "stylesheet" href = "https://cdn.lyshark.com/bootstrap/4.5.0/css/bootstrap.min.css" rel = "external nofollow" > </ head > < body > < table class = "table table-sm table-hover" > < thead > < tr class = "table-success" > < th > 序号</ th > < th > 用户名</ th > < th > 用户密码</ th > </ tr > </ thead > < tbody > {% for article in user_list %} < tr class = "table-primary" > < td >{{ article.id }}</ td > < td >{{ article.username }}</ td > < td >{{ article.password }}</ td > </ tr > {% endfor %} </ tbody > </ table > < nav class = "d-flex justify-content-center" aria-label = "Page navigation example" > < ul class = "pagination" > < li class = "page-item" >< a class = "page-link" href = "./page?id=1" rel = "external nofollow" >首页</ a ></ li > {% if user_list.has_previous %} < li class = "page-item" >< a class = "page-link" href = "./page?id={{ user_list.previous_page_number }}" rel = "external nofollow" >上一页</ a ></ li > {% else %} < li class = "page-item disabled" >< a class = "page-link" href = "#" rel = "external nofollow" rel = "external nofollow" >上一页</ a ></ li > {% endif %} {% for item in page_range %} {% if item == currentPage %} < li class = "page-item active" >< a class = "page-link" href = "./page?id={{ item }}" rel = "external nofollow" rel = "external nofollow" >{{ item }}</ a ></ li > {% else %} < li class = "page-item" >< a class = "page-link" href = "./page?id={{ item }}" rel = "external nofollow" rel = "external nofollow" >{{ item }}</ a ></ li > {% endif %} {% endfor %} {% if user_list.has_next %} < li class = "page-item" >< a class = "page-link" href = "./page?id={{ user_list.next_page_number }}" rel = "external nofollow" >下一页</ a ></ li > {% else %} < li class = "page-item disabled" >< a class = "page-link" href = "#" rel = "external nofollow" rel = "external nofollow" >下一页</ a ></ li > {% endif %} < li class = "page-item" >< a class = "page-link" href = "./page?id={{ paginator.num_pages }}" rel = "external nofollow" >尾页</ a ></ li > </ ul > </ nav > < div style = "text-align: center;" class = "alert alert-dark" > 统计: {{ currentPage }}/{{ paginator.num_pages }} 共查询到:{{ paginator.count }} 条数据 页码列表:{{ paginator.page_range }} </ div > </ body > </ html > |
9.最后在路由曾以及view中增加对应的URL以及路由函数.
首先在urls.py中增加一条新路由.
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from django.contrib import admin from django.urls import path from MyWeb import views urlpatterns = [ path( 'admin/' , admin.site.urls), path( 'index/' ,views.index), path( 'rand/' ,views.rand), path( 'page' ,views.page) ] |
接着在views.py中增加一个page函数.
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from django.shortcuts import render from django.shortcuts import HttpResponse from MyWeb import models import random from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger # 首页 def index(requests): return HttpResponse( "abcd" ) # 生成测试数据 def rand(request): for i in range ( 1 , 1000 ): chars = [] pasd = [] for x in range ( 1 , 8 ): chars.append(random.choice( 'abcdefghijklmnopqrstuvwxyz' )) pasd.append(random.choice( '0987654321' )) user = "".join(chars) pwd = "".join(pasd) models.User.objects.create(username = user, password = pwd) return HttpResponse( "ok" ) # 分页函数 def page(request): user = models.User.objects. all () paginator = Paginator(user, 10 ) currentPage = int (request.GET.get( "id" , 1 )) if paginator.num_pages > 15 : if currentPage - 5 < 1 : pageRange = range ( 1 , 11 ) elif currentPage + 5 > paginator.num_pages: pageRange = range (currentPage - 5 ,paginator.num_pages) else : pageRange = range (currentPage - 5 ,currentPage + 5 ) else : pageRange = paginator.page_range try : user_list = paginator.page(currentPage) except PageNotAnInteger: user_list = paginator.page( 1 ) except : user_list = paginator.page(paginator.num_pages) return render(request, "page.html" ,{ "user_list" :user_list, "paginator" :paginator, "page_range" :pageRange, "currentPage" :currentPage}) |
准备就绪之后,直接访问http://127.0.0.1:8000/page即可看到分页显示效果.
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原文链接:https://www.cnblogs.com/LyShark/p/15498755.html