复习:博客站点
<!DOCTYPE html>
{% load staticfiles %}
<html>
<head>
<meta charset="utf-8">
<title>first web</title>
<link rel="stylesheet" href="{% static 'css/semantic.css'%}" media="screen" title="no title" charset="utf-8">
<link href="https://fonts.googleapis.com/css?family=Oswald|Raleway" rel="stylesheet">
<style type="text/css">
/*封面图部分样式如下*/
.ui.vertical.segment.masthead {
height: 300px;
background: url("{% static 'images/star_banner.jpg'%}");
background-size: cover;
background-position: 100% 80%;
} .ui.center.aligned.header.blogslogon {
margin-top: 40px;
}
.ui.center.aligned.header.blogslogon p {
margin-top: 10px;
color: white;
font-size: 10px;
}
/*菜单栏部分样式如下*/
.ui.container.nav {
width: 500px;
} /*菜单栏部分样式如下*/
.ui.container.vertical.segment {
width: 800px;
} h2 {
font-family:'Oswald', sans-serif!important;
font-size:40px;
} p {
font-family: 'Raleway', sans-serif;
font-size:18px;
}
</style>
</head>
<body>
<!-- 封面图部分如下 -->
<div class="ui inverted vertical segment masthead">
<h1 class="ui center aligned header blogslogon" style="font-size:50px;font-family: 'Raleway', sans-serif!important;">
Bloger
<p class="ui sub header">
everyone has a story to tell
</p>
</h1>
</div>
<!-- 菜单栏部分如下 -->
<div class="ui container nav">
<div class="ui borderless text three item menu ">
<div class="ui simple dropdown item">
Categories
<i class="dropdown icon"></i>
<div class="menu">
<a class="item" href="">life</a>
<a class="item" href="">tech</a>
</div>
</div>
<a class="item">
Popular
</a>
<a class="item">
About
</a>
</div>
</div>
<div class="ui divider"></div>
<!-- 文章内容部分如下 -->
<div class="ui vertical segment">
{% for article in article_list%}
<div class="ui container vertical segment">
<a href="#">
<h2 class="ui header">
{{ article.headline }}
</h2>
</a>
<i class="icon grey small unhide">10,000</i>
<p>
{{ article.content|truncatewords:100 }}
<a href="#">
<i class="angle tiny double grey right icon">READMORE</i>
</a>
</p>
<div class="ui mini tag label">
life
</div>
</div>
{% endfor %} </div>
<!-- 页尾部分如下 -->
<div class="ui inverted vertical very padded segment">
Mugglecoding®
</div>
</body>
</html>
1.GET方法传递参数
2.开发过程的三个问题(从后向前思考)
Model层:需要多少个数据字段
View层:根据什么请求,返回什么结果
Template层:如何与用户进行交互?
(2)开发流程
T 需要看到数据的网页
M 做数据
V 视图模型
U url地址
T 调整网页
1.Model层
(1)添加tag标签
- choices 选项
TAG_CHOICES = (
('tech','Tech'), #值:名字
('life','Life'),
)
tag = models.CharField(null=True,blank=True,max_length=5, choices=TAG_CHOICES)
(2)更新数据库到后台
PS C:\Users\Administrator\Desktop\root\firstsite> python.exe .\manage.py makemigrations PS C:\Users\Administrator\Desktop\root\firstsite> python.exe .\manage.py migrate PS C:\Users\Administrator\Desktop\root\firstsite> python.exe .\manage.py runserver
(3)启动服务器,后台查看tag标签
2. View层
(1)认识request请求参数?
(2)通过GET方法获取tag对应的值
(3)判断request请求,通过Get方法得到的数据,进行判断
http://127.0.0.1:8000/index/?tag=tech
http://127.0.0.1:8000/index/?tag=life
(4)views.py的index视图代码
def index(request):
print(request)
print("==="*30)
print(dir(request))
print("==="*30)
print(type(request)) queryset = request.GET.get('tag')
print(queryset) if queryset:
article_list = Aritcle.objects.filter(tag=queryset) #过滤器
else:
article_list = Aritcle.objects.all() #获取Article数据库所有的数据 context = {}
context['article_list'] = article_list
index_page = render(request,'firstweb.html',context)
return index_page
3.Template层:如何与用户交互?
(1)a标签跳转url
(2)小修改:模板变量
(3) html代码
<!DOCTYPE html>
{% load staticfiles %}
<html>
<head>
<meta charset="utf-8">
<title>first web</title>
<link rel="stylesheet" href="{% static 'css/semantic.css'%}" media="screen" title="no title" charset="utf-8">
<link href="https://fonts.googleapis.com/css?family=Oswald|Raleway" rel="stylesheet">
<style type="text/css">
/*封面图部分样式如下*/
.ui.vertical.segment.masthead {
height: 300px;
background: url("{% static 'images/star_banner.jpg'%}");
background-size: cover;
background-position: 100% 80%;
} .ui.center.aligned.header.blogslogon {
margin-top: 40px;
}
.ui.center.aligned.header.blogslogon p {
margin-top: 10px;
color: white;
font-size: 10px;
}
/*菜单栏部分样式如下*/
.ui.container.nav {
width: 500px;
} /*菜单栏部分样式如下*/
.ui.container.vertical.segment {
width: 800px;
} h2 {
font-family:'Oswald', sans-serif!important;
font-size:40px;
} p {
font-family: 'Raleway', sans-serif;
font-size:18px;
}
</style>
</head>
<body>
<!-- 封面图部分如下 -->
<div class="ui inverted vertical segment masthead">
<h1 class="ui center aligned header blogslogon" style="font-size:50px;font-family: 'Raleway', sans-serif!important;">
Bloger
<p class="ui sub header">
everyone has a story to tell
</p>
</h1>
</div>
<!-- 菜单栏部分如下 -->
<div class="ui container nav">
<div class="ui borderless text three item menu ">
<div class="ui simple dropdown item">
Categories
<i class="dropdown icon"></i>
<div class="menu">
<a class="item" href="?tag=life">life</a>
<a class="item" href="?tag=tech">tech</a>
</div>
</div>
<a class="item">
Popular
</a>
<a class="item">
About
</a>
</div>
</div>
<div class="ui divider"></div>
<!-- 文章内容部分如下 -->
<div class="ui vertical segment">
{% for article in article_list%}
<div class="ui container vertical segment">
<a href="#">
<h2 class="ui header">
{{ article.headline }}
</h2>
</a>
<i class="icon grey small unhide">10,000</i>
<p>
{{ article.content|truncatewords:100 }}
<a href="#">
<i class="angle tiny double grey right icon">READMORE</i>
</a>
</p>
<div class="ui mini tag label">
{{ article.tag }}
</div>
</div>
{% endfor %} </div>
<!-- 页尾部分如下 -->
<div class="ui inverted vertical very padded segment">
Mugglecoding®
</div>
</body>
</html>