进行了前后端简单的链接
view 视图代码如下
from django.shortcuts import render
from django.http import HttpResponse
from django.shortcuts import redirect def s1(request):
return HttpResponse('<h1>hello<h1>') def login(request):
error_msg=""
if request.method=="POST":
user=request.POST.get('user',None)
pwd=request.POST.get('pwd',None)
if user=="root" and pwd=="":
return redirect("http://www.baidu.com")#实现重定向，如果网址写错的话，会自动加到链接的后面
else:
error_msg="用户名或密码错误" return render(request ,'login.html',{'error_msg':error_msg}) # Create your views here.
login页面代码视图如下
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="/static/common.css">
</head>
<body>
<form action="/login/" method="post">
<p>
<label for="username">用户名</label>
<input id="username" name="user" type="text">
</p>
<p>
<label for="password">密码</label>
<input id="password" name="pwd" type="text">{{error_msg}}
<input type="submit" value="提交">
</p>
</form>
</body>
</html>
账号必须是root 密码必须是123 才能够重定向 否则 就会这样
如果符合条件就会跳转到百度
注意细节
post的话，action方法必须/login/ 否则会报错 或者修改setting的文件
又新建了home页面
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<form action="/home/" method="post">
<input type="text" name="username" placeholder="用户名">
<input type="text" name="password" placeholder="密码">
<input type="text" name="sex" placeholder="性别">
<input type="submit" value="添加">
</form>
<table>
{% for row in userlist %}
<tr>
<td>{{row.username}}</td>
<td>{{row.password }}</td>
<td>{{row.sex}}</td>
</tr>
{% endfor %}<!-必须加endfor-!>这是模板语言
</table>
</body>
</html>
view 的视图函数如下
def home(request):
if request.method=="POST":
u=request.POST.get('username',None)
p=request.POST.get('password',None)
s=request.POST.get('sex',None)
temp={"username": u,"password": p,"sex":s} userlist.append(temp)
return render(request,'home.html',{"userlist":userlist})#userlist传递给前端页面
内容整理
内容整理
1. 创建Django工程
django-admin startproject 工程名 2. 创建APP
cd 工程名
python manage.py startapp cmdb 3、静态文件
project.settings.py STATICFILES_DIRS = (
os.path.join(BASE_DIR, "static"),
) 4、模板路径 DIRS ==> [os.path.join(BASE_DIR,'templates'),] 5、settings中 middlerware # 注释 csrf 6、定义路由规则
url.py "login" --> 函数名 7、定义视图函数
app下views.py def func(request):
# request.method GET / POST # http://127.0.0.1:8009/home?nid=123&name=alex
# request.GET.get('',None) # 获取请求发来的而数据 # request.POST.get('',None) # return HttpResponse("字符串")
# return render(request, "HTML模板的路径")
# return redirect('/只能填URL') 8、模板渲染
特殊的模板语言 -- {{ 变量名 }} def func(request):
return render(request, "index.html", {'current_user': "alex"}) index.html <html>
..
<body>
<div>{{current_user}}</div>
</body> </html> ====> 最后生成的字符串 <html>
..
<body>
<div>alex</div>
</body> </html>
-- For循环
def func(request):
return render(request, "index.html", {'current_user': "alex", 'user_list': ['alex','eric']}) index.html <html>
..
<body>
<div>{{current_user}}</div> <ul>
{% for row in user_list %} {% if row == "alex" %}
<li>{{ row }}</li>
{% endif %} {% endfor %}
</ul> </body> </html> #####索引#################
def func(request):
return render(request, "index.html", {
'current_user': "alex",
'user_list': ['alex','eric'],
'user_dict': {'k1': 'v1', 'k2': 'v2'}}) index.html <html>
..
<body>
<div>{{current_user}}</div> <a> {{ user_list.1 }} </a>
<a> {{ user_dict.k1 }} </a>
<a> {{ user_dict.k2 }} </a> </body> </html> ###### 条件 def func(request):
return render(request, "index.html", {
'current_user': "alex",
"age": 18,
'user_list': ['alex','eric'],
'user_dict': {'k1': 'v1', 'k2': 'v2'}}) index.html <html>
..
<body>
<div>{{current_user}}</div> <a> {{ user_list.1 }} </a>
<a> {{ user_dict.k1 }} </a>
<a> {{ user_dict.k2 }} </a> {% if age %}
<a>有年龄</a>
{% if age > 16 %}
<a>老男人</a>
{% else %}
<a>小鲜肉</a>
{% endif %}
{% else %}
<a>无年龄</a>
{% endif %}
</body> </html>
内容整理
1. 创建Django工程
django-admin startproject 工程名 2. 创建APP
cd 工程名
python manage.py startapp cmdb 3、静态文件
project.settings.py STATICFILES_DIRS = (
os.path.join(BASE_DIR, "static"),
) 4、模板路径 DIRS ==> [os.path.join(BASE_DIR,'templates'),] 5、settings中 middlerware # 注释 csrf 6、定义路由规则
url.py "login" --> 函数名 7、定义视图函数
app下views.py def func(request):
# request.method GET / POST # http://127.0.0.1:8009/home?nid=123&name=alex
# request.GET.get('',None) # 获取请求发来的而数据 # request.POST.get('',None) # return HttpResponse("字符串")
# return render(request, "HTML模板的路径")
# return redirect('/只能填URL') 8、模板渲染
特殊的模板语言 -- {{ 变量名 }} def func(request):
return render(request, "index.html", {'current_user': "alex"}) index.html <html>
..
<body>
<div>{{current_user}}</div>
</body> </html> ====> 最后生成的字符串 <html>
..
<body>
<div>alex</div>
</body> </html>
-- For循环
def func(request):
return render(request, "index.html", {'current_user': "alex", 'user_list': ['alex','eric']}) index.html <html>
..
<body>
<div>{{current_user}}</div> <ul>
{% for row in user_list %} {% if row == "alex" %}
<li>{{ row }}</li>
{% endif %} {% endfor %}
</ul> </body> </html> #####索引#################
def func(request):
return render(request, "index.html", {
'current_user': "alex",
'user_list': ['alex','eric'],
'user_dict': {'k1': 'v1', 'k2': 'v2'}}) index.html <html>
..
<body>
<div>{{current_user}}</div> <a> {{ user_list.1 }} </a>
<a> {{ user_dict.k1 }} </a>
<a> {{ user_dict.k2 }} </a> </body> </html> ###### 条件 def func(request):
return render(request, "index.html", {
'current_user': "alex",
"age": 18,
'user_list': ['alex','eric'],
'user_dict': {'k1': 'v1', 'k2': 'v2'}}) index.html <html>
..
<body>
<div>{{current_user}}</div> <a> {{ user_list.1 }} </a>
<a> {{ user_dict.k1 }} </a>
<a> {{ user_dict.k2 }} </a> {% if age %}
<a>有年龄</a>
{% if age > 16 %}
<a>老男人</a>
{% else %}
<a>小鲜肉</a>
{% endif %}
{% else %}
<a>无年龄</a>
{% endif %}
</body> </html>