Domain > 2fun.cc

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Whois

Property	Value
Email	KEENAN@SULTANIK.NET
NameServer	UK6.WORLDFRIEND.WEB.ID
Created	2014-10-08 06:32:32
Changed	2014-10-18 06:23:50
Registrar	ENOM, INC.

DNS Resolutions

Date	IP Address
2013-08-03	31.22.4.107 (ClassC)
2013-09-13	31.22.4.108 (ClassC)
2014-08-17	209.99.40.222 (ClassC)
2015-11-18	64.74.223.41 (ClassC)
2018-05-30	47.254.39.234 (ClassC)
2025-03-30	82.156.193.135 (ClassC)

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wp-block-navigation-is-layout-flex aria-label 		 data-wp-interactivecore/navigation data-wp-context{overlayOpenedBy:{click:false,hover:false,focus:false},type:overlay,roleAttribute:,ariaLabel:\u83dc\u5355}>button aria-haspopupdialog aria-label打开菜单 classwp-block-navigation__responsive-container-open  				data-wp-on-async--clickactions.openMenuOnClick				data-wp-on--keydownactions.handleMenuKeydown			>svg width24 height24 xmlnshttp://www.w3.org/2000/svg viewBox0 0 24 24 aria-hiddentrue focusablefalse>rect x4 y7.5 width16 height1.5 />rect x4 y15 width16 height1.5 />/svg>/button>				div classwp-block-navigation__responsive-container  has-text-color has-contrast-color has-background has-base-background-color  idmodal-1 				data-wp-class--has-modal-openstate.isMenuOpen				data-wp-class--is-menu-openstate.isMenuOpen				data-wp-watchcallbacks.initMenu				data-wp-on--keydownactions.handleMenuKeydown				data-wp-on-async--focusoutactions.handleMenuFocusout				tabindex-1			>					div classwp-block-navigation__responsive-close tabindex-1>						div classwp-block-navigation__responsive-dialog 				data-wp-bind--aria-modalstate.ariaModal				data-wp-bind--aria-labelstate.ariaLabel				data-wp-bind--rolestate.roleAttribute			>							button aria-label关闭菜单 classwp-block-navigation__responsive-container-close 				data-wp-on-async--clickactions.closeMenuOnClick			>svg xmlnshttp://www.w3.org/2000/svg viewBox0 0 24 24 width24 height24 aria-hiddentrue focusablefalse>path dm13.06 12 6.47-6.47-1.06-1.06L12 10.94 5.53 4.47 4.47 5.53 10.94 12l-6.47 6.47 1.06 1.06L12 13.06l6.47 6.47 1.06-1.06L13.06 12Z>/path>/svg>/button>							div classwp-block-navigation__responsive-container-content 				data-wp-watchcallbacks.focusFirstElement			 idmodal-1-content>								ul classwp-block-navigation__container is-responsive items-justified-right wp-block-navigation>ul classwp-block-page-list>li classwp-block-pages-list__item wp-block-navigation-item open-on-hover-click>a classwp-block-pages-list__item__link wp-block-navigation-item__content hrefhttp://2.k2tv.cn/index.php/sample-page/>示例页面/a>/li>/ul>/ul>							/div>						/div>					/div>				/div>/nav>			/div>					/div>			/div>	/div>/header>main classwp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained stylemargin-top:var(--wp--preset--spacing--60)>	h1 classwp-block-heading has-text-align-left>博客/h1>	div classwp-block-query alignfull is-layout-flow wp-block-query-is-layout-flow>	ul classalignfull wp-block-post-template is-layout-flow wp-block-post-template-is-layout-flow>li classwp-block-post post-1 post type-post status-publish format-standard hentry category-uncategorized>				div classwp-block-group alignfull has-global-padding is-layout-constrained wp-block-group-is-layout-constrained stylepadding-top:var(--wp--preset--spacing--60);padding-bottom:var(--wp--preset--spacing--60)>						h2 classwp-block-post-title has-x-large-font-size>a hrefhttp://2.k2tv.cn/index.php/2025/03/07/hello-world/ target_self >python分享/a>/h2>			div classentry-content alignfull wp-block-post-content has-medium-font-size has-global-padding is-layout-constrained wp-block-post-content-is-layout-constrained>p>/p>h2 classwp-block-heading>一、引言/h2>p>在当今的 Web 开发领域，选择一个合适的后端框架至关重要。Python 的 Django 框架以其 “Batteries included”（自带电池）的理念，为开发者提供了一套全面且高效的解决方案。它遵循 MVC（实际上 Django 遵循的是 MVT，即 Model – View – Template）架构模式，具备强大的数据库抽象层、内置的管理界面、表单处理、安全防护等功能，极大地提高了开发效率。本次分享将深入探讨 Django 的核心特性、开发流程以及一些实用的开发技巧。/p>h2 classwp-block-heading>二、Django 核心特性/h2>h3 classwp-block-heading>（一）强大的 ORM（对象关系映射）/h3>p>Django 的 ORM 允许开发者使用 Python 代码来操作数据库，而无需编写复杂的 SQL 语句。例如，定义一个简单的博客文章模型：/p>p>python/p>pre classwp-block-code>code>from django.db import modelsclass Post(models.Model):    title  models.CharField(max_length200)    content  models.TextField()    pub_date  models.DateTimeField(date published)    def __str__(self):        return self.title/code>/pre>p>通过这个模型，我们可以轻松地进行数据库操作，如创建、查询、更新和删除文章：/p>p>python/p>pre classwp-block-code>code># 创建一篇新文章new_post  Post(titleNew Blog Post, contentThis is the content of the post., pub_datetimezone.now())new_post.save()# 查询所有文章all_posts  Post.objects.all()# 更新文章post  Post.objects.get(id1)post.title  Updated Titlepost.save()# 删除文章post  Post.objects.get(id1)post.delete()/code>/pre>h3 classwp-block-heading>（二）内置的管理界面/h3>p>Django 自动生成一个功能强大的管理界面，只需简单的配置，就可以对数据库中的数据进行管理。在 code>admin.py/code> 文件中注册模型：/p>p>python/p>pre classwp-block-code>code>from django.contrib import adminfrom.models import Postadmin.site.register(Post)/code>/pre>p>之后，在浏览器中访问 code>/admin/code> 路径，使用管理员账号登录，就可以方便地对文章进行增删改查操作。/p>h3 classwp-block-heading>（三）URL 路由系统/h3>p>Django 的 URL 路由系统允许开发者将 URL 映射到视图函数或类视图。在 code>urls.py/code> 文件中定义 URL 模式：/p>p>python/p>pre classwp-block-code>code>from django.urls import pathfrom.views import post_list, post_detailurlpatterns  [    path(posts/, post_list, namepost_list),    path(posts/<int:pk>/, post_detail, namepost_detail),/code>/pre>p>这里，code>posts//code> 路径会调用 code>post_list/code> 视图函数，而 code>posts/<int:pk>//code> 路径会调用 code>post_detail/code> 视图函数，并将文章的主键作为参数传递给它。/p>h3 classwp-block-heading>（四）模板系统/h3>p>Django 的模板系统允许开发者将业务逻辑和展示逻辑分离。模板文件通常使用 HTML 语法，并结合 Django 的模板标签和过滤器。例如，在 code>post_list.html/code> 模板中显示文章列表：/p>p>html/p>pre classwp-block-code>code><!DOCTYPE html><html langen><head>    <meta charsetUTF-8>    <title>Post List</title></head><body>    <h1>Blog Posts</h1>    {% for post in posts %}        <h2><a href{% url post_detail pkpost.pk %}>{{ post.title }}</a></h2>        <p>{{ post.content }}</p>    {% endfor %}</body></html>/code>/pre>h2 classwp-block-heading>三、Django 开发流程/h2>h3 classwp-block-heading>（一）项目创建/h3>p>使用 code>django-admin/code> 命令创建一个新的 Django 项目：/p>p>bash/p>pre classwp-block-code>code>django-admin startproject myprojectcd myproject/code>/pre>h3 classwp-block-heading>（二）应用创建/h3>p>在项目中创建一个新的应用：/p>p>bash/p>pre classwp-block-code>code>python manage.py startapp myapp/code>/pre>h3 classwp-block-heading>（三）模型设计/h3>p>在 code>myapp/models.py/code> 中定义数据库模型，如前面的 code>Post/code> 模型。/p>h3 classwp-block-heading>（四）数据库迁移/h3>p>创建数据库迁移文件并应用到数据库：/p>p>bash/p>pre classwp-block-code>code>python manage.py makemigrationspython manage.py migrate/code>/pre>h3 classwp-block-heading>（五）视图编写/h3>p>在 code>myapp/views.py/code> 中编写视图函数或类视图：/p>p>python/p>pre classwp-block-code>code>from django.shortcuts import renderfrom.models import Postdef post_list(request):    posts  Post.objects.all()    return render(request, post_list.html, {posts: posts})/code>/pre>h3 classwp-block-heading>（六）URL 配置/h3>p>在 code>myapp/urls.py/code> 中配置 URL 模式，并在项目的 code>urls.py/code> 中包含该应用的 URL 配置：/p>p>python/p>pre classwp-block-code>code># myapp/urls.pyfrom django.urls import pathfrom.views import post_listurlpatterns  [    path(posts/, post_list, namepost_list),# myproject/urls.pyfrom django.contrib import adminfrom django.urls import path, includeurlpatterns  [    path(admin/, admin.site.urls),    path(, include(myapp.urls)),/code>/pre>h3 classwp-block-heading>（七）模板创建/h3>p>在 code>myapp/templates/code> 目录下创建模板文件，如 code>post_list.html/code>。/p>h2 classwp-block-heading>四、实用开发技巧/h2>h3 classwp-block-heading>（一）使用 Django REST framework 构建 API/h3>p>如果需要开发 RESTful API，可以使用 Django REST framework。首先安装该框架：/p>p>bash/p>pre classwp-block-code>code>pip install djangorestframework/code>/pre>p>然后在 code>settings.py/code> 中添加 code>rest_framework/code> 到 code>INSTALLED_APPS/code>：/p>p>python/p>pre classwp-block-code>code>INSTALLED_APPS  [    #...    rest_framework,    myapp,/code>/pre>p>接着定义序列化器和视图集：/p>p>python/p>pre classwp-block-code>code># myapp/serializers.pyfrom rest_framework import serializersfrom.models import Postclass PostSerializer(serializers.ModelSerializer):    class Meta:        model  Post        fields  __all__# myapp/views.pyfrom rest_framework import viewsetsfrom.models import Postfrom.serializers import PostSerializerclass PostViewSet(viewsets.ModelViewSet):    queryset  Post.objects.all()    serializer_class  PostSerializer/code>/pre>p>最后配置 URL：/p>p>python/p>pre classwp-block-code>code># myapp/urls.pyfrom django.urls import path, includefrom rest_framework.routers import DefaultRouterfrom.views import PostViewSetrouter  DefaultRouter()router.register(rposts, PostViewSet)urlpatterns  [    path(, include(router.urls)),/code>/pre>h3 classwp-block-heading>（二）使用 Django Debug Toolbar 进行调试/h3>p>Django Debug Toolbar 可以在开发过程中提供详细的调试信息。安装该工具：/p>p>bash/p>pre classwp-block-code>code>pip install django-debug-toolbar/code>/pre>p>在 code>settings.py/code> 中进行配置：/p>p>python/p>pre classwp-block-code>code>INSTALLED_APPS  [    #...    debug_toolbar,MIDDLEWARE  [    #...    debug_toolbar.middleware.DebugToolbarMiddleware,INTERNAL_IPS  [    127.0.0.1,/code>/pre>p>在 code>urls.py/code> 中添加配置：/p>p>python/p>pre classwp-block-code>code>from django.conf import settingsfrom django.conf.urls import include, urlif settings.DEBUG:    import debug_toolbar    urlpatterns  [        url(r^__debug__/, include(debug_toolbar.urls)),     + urlpatterns/code>/pre>h2 classwp-block-heading>五、总结/h2>p>Django 作为一个功能强大、高效且易于上手的 Python Web 框架，为开发者提供了丰富的工具和功能。通过本次分享，我们了解了 Django 的核心特性、开发流程以及一些实用的开发技巧。无论是开发小型的个人项目还是大型的企业级应用，Django 都能帮助我们快速搭建出稳定、可靠的后端服务。希望大家在今后的开发中能够充分利用 Django 的优势，开发出优秀的 Web 应用。/p>/div>			div stylemargin-top:var(--wp--preset--spacing--40); classwp-block-post-date has-small-font-size>time datetime2025-03-07T20:16:56+08:00>a hrefhttp://2.k2tv.cn/index.php/2025/03/07/hello-world/>2025年3月7日/a>/time>/div>		/div>			/li>/ul>		div classwp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained stylepadding-top:var(--wp--preset--spacing--60);padding-bottom:var(--wp--preset--spacing--60)>			/div>			div classwp-block-group alignwide has-global-padding is-layout-constrained wp-block-group-is-layout-constrained>			/div>	/div>/main>footer classwp-block-template-part>div 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