BBS - 首页个人站点ORM
Posted Alice的小屋
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1 ajax和用户认证组件 ----PIL和session 2 ajax和form组件注册功能 (1) form请求和ajax上传文件 form请求: <form action="" novalidate enctype="multipart/form-data"> </form> request.FILES("avatar") ajax: formdata=new FormData() formdata.append("","") $.ajax({ url:"" processData:false, contentType:false data:formdata }) request.FILES("avatar") (2)图像预览 (3)form组件: class Userform(forms.Form): user=forms.Charfield() email=forms.Emailfield() def reg(): if request.method=="GET": form=Userform() return render(request,"reg.html",locals()) 在reg.html： 渲染方式： 1 ：{{form.as_p}} 2 : {{form.user}} {{form.user.label}} 3 : {%for field in form%} {{field}} {{field.label}} {%endfor%} def reg(): if request.method=="POST": form=Userform(request.POST) if form.is_valid(): form.cleaned_data else: form.errors return ...... (4) media配置： 静态文件的处理又包括STATIC和MEDIA两类，这往往容易混淆，在Django里面是这样定义的： MEDIA: 指用户上传的文件，比如在Model里面的FileFIeld，ImageField上传的文件。 STATIC:指服务器自己的文件。 示例： class User()： avatar = models.FileField(upload_to=\'avatars/\', default="/avatars/default.png") if 实例化一个User对象的时候，avatar字段会接收一个文件对象，这个文件对象 会默认保存到项目的根目录对应的upload_to=\'avatars/\'的位置 配置1： MEDIA_ROOT=os.path.join(BASE_DIR,"blog","media") if 实例化一个User对象的时候，avatar字段会接收一个文件对象，这个文件对象 会默认保存到MEDIA_ROOT对应路径的upload_to=\'avatars/\'的位置 配置2： settings： MEDIA_URL="/media/" url.py: from django.views.static import serve from cnblog_s9 import settings # media 配置 url(r\'^media/(?P<path>.*)$\', serve, {\'document_root\': settings.MEDIA_ROOT}), http://127.0.0.1:8000/media/avatars/lufei.jpg 博客系统： 系统首页 admin:数据库后台管理web页面 个人站点： 查询 基于对象查询(子查询) 基于queryset查询(join查询)
一、首页
def index(request): article_list = Article.objects.all() return render(request, \'index.html\',{\'article_list\':article_list})
# 登录 显示 用户名 ，注销 ， 修改密码 。。。
# 未登录 显示 登录 ， 注册
<ul class="nav navbar-nav navbar-right"> {% if request.user.username%} <li><a href="">{{ request.user.username }}</a></li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="#">注销</a></li> <li><a href="#">修改密码</a></li> <li role="separator" class="divider"></li> <li><a href="#">更换头像</a></li> </ul> </li> {% else %} <li><a href="">登录</a></li> <li><a href="">注册</a></li> {% endif %}
文章列表显示：以及用户头像点击到站点
<div class="col-md-7"> <div class="article_list"> {% for article in article_list %} <div class="article_item"> <div><h5><a href="">{{ article.title }}</a></h5></div> <div class="row"> <div class="col-md-2"><a href="/blog/{{ article.user.username }}"><img width="60" height="60" src="/media/{{ article.user.avatar }}" alt=""></a> </div> <div class="col-md-9 desc"> <p>{{ article.desc }}</p> </div> </div> <div class="small"> <span><a href="/blog/{{ article.user.username }}">{{ article.user.username }}</a>发布于</span> <span>{{ article.create_time|date:\'Y-m-d\' }}</span> <span class="glyphicon glyphicon-comment"></span>评论({{ article.comment_count }}) {# <span class="glyphicon glyphicon-comment"></span>评论({{ article.comment_set.count }}) #} <span class="glyphicon glyphicon-thumbs-up"></span>赞({{ article.up_count }}) </div> </div> <hr> {% endfor %} </div> </div>
注意点：
1. img 的 src
<img width="60" height="60" src="/media/{{ article.user.avatar }}" alt="">
2.小图标 点赞数 评论数
<span class="glyphicon glyphicon-comment"></span>评论({{ article.comment_count }})
<span class="glyphicon glyphicon-thumbs-up"></span>赞({{ article.up_count }})
因为：点赞数 评论数 要频繁的查，如果每次跨表，效率会低！
<span class="glyphicon glyphicon-comment"></span>评论({{ article.comment_set.count }})
所以 不使用这个，跨表查询 article.comment_set.count 而是 新加字段 comment_count
之后，在进行一次数据库迁移：makemigrations migrate
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>index</title> <link rel="stylesheet" href="/static/bootstrap-3.3.7/css/bootstrap.css"> <link rel="stylesheet" href="/static/css/login.css"> <style type="text/css"> .article_item .desc{ margin-left: -40px;} </style> </head> <body> {# 导航条#} <nav class="navbar navbar-inverse"> <div class="container-fluid"> <!-- Brand and toggle get grouped for better mobile display --> <div class="navbar-header"> <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> <a class="navbar-brand" href="#">博客园</a> </div> <!-- Collect the nav links, forms, and other content for toggling --> <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1"> <ul class="nav navbar-nav"> <li class="active"><a href="#">Link <span class="sr-only">(current)</span></a></li> <li><a href="#">Link</a></li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="#">Action</a></li> <li><a href="#">Another action</a></li> <li><a href="#">Something else here</a></li> <li role="separator" class="divider"></li> <li><a href="#">Separated link</a></li> <li role="separator" class="divider"></li> <li><a href="#">One more separated link</a></li> </ul> </li> </ul> <ul class="nav navbar-nav navbar-right"> {% if request.user.username%} <li><a href="">{{ request.user.username }}</a></li> <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="#">注销</a></li> <li><a href="#">修改密码</a></li> <li role="separator" class="divider"></li> <li><a href="#">更换头像</a></li> </ul> </li> {% else %} <li><a href="">登录</a></li> <li><a href="">注册</a></li> {% endif %} </ul> </div><!-- /.navbar-collapse --> </div><!-- /.container-fluid --> </nav> <div class="container-fluid"> <div class="col-md-2"> <div class="panel panel-primary"> <div class="panel-heading">Panel heading without title</div> <div class="panel-body"> Panel content </div> </div> <div class="panel panel-info"> <div class="panel-heading">Panel heading without title</div> <div class="panel-body"> Panel content </div> </div> <div class="panel panel-warning"> <div class="panel-heading">Panel heading without title</div> <div class="panel-body"> Panel content </div> </div> </div> <div class="col-md-7"> <div class="article_list"> {% for article in article_list %} <div class="article_item"> <div><h5><a href="">{{ article.title }}</a></h5></div> <div class="row"> <div class="col-md-2"><a href="/blog/{{ article.user.username }}"><img width="60" height="60" src="/media/{{ article.user.avatar }}" alt=""></a> </div> <div class="col-md-9 desc"> <p>{{ article.desc }}</p> </div> </div> <div class="small"> <span><a href="/blog/{{ article.user.username }}">{{ article.user.username }}</a>发布于</span> <span>{{ article.create_time|date:\'Y-m-d\' }}</span> <span class="glyphicon glyphicon-comment"></span>评论({{ article.comment_count }}) <span class="glyphicon glyphicon-thumbs-up"></span>赞({{ article.up_count }}) </div> </div> <hr> {% endfor %} </div> </div> <div class="col-md-3"> <div class="panel panel-danger"> <div class="panel-heading"> <h3 class="panel-title">Panel title</h3> </div> <div class="panel-body"> Panel content </div> </div> </div> </div> <script src="/static/js/jquery-3.2.1.min.js"></script> <script src="/static/bootstrap-3.3.7/js/bootstrap.min.js"></script> </body> </BBS--功能4：个人站点页面设计（ORM跨表与分组查询）