Django模板和Django使用cookie

- 日理万妓 2023-07-07 05:42 34阅读 0赞

### 文章目录 ###

*  本文代码已上传\[代码连接轻点此处\](https://download.csdn.net/download/qq\_32460819/12179139)
 *  说明:
 *  一、创建魔板
 *  二、上传数据
 *  三、创建数据上传完成提示, 使用form魔板
 *   *  1. 新建forms.py
     *  2.HTML调用forms.py
     *  3. views.py
     *  4 urls.py请求与反馈
 *  四、cookie
 *   *  1 test\_cookie.html
     *  2 views.py 设置cookie
     *  3 urls.py调用
     *  4 结果

# 本文代码已上传[代码连接轻点此处][Link 1] #

# 说明: #

*  首先创建好通用魔板,即完成数据库,跟后台APP
 *  首先浏览器访问服务器, url(r’^first\_test/$’, first\_test), first\_test先返回html界面
 *  用户在向html界面传递数据, 于是服务器根据传递的参数传递回first\_test函数, 这个时候才开始处理数据
 *  处理数据包含将用户提交的数据上传到服务器
 *  因为界面包含的按钮跳转jqAjax()函数,该函数执行url=http://127.0.0.1:8000/post\_data/
 *  因此又跳转到post\_data请求,
 *  而该请求仅仅将成功请求标识返回来,于是界面进行了反馈显示
 *  所以从用户请求到最终用了 1请1显(请求显示界面) 1请1显(请求数据处理既提示)

# 一、创建魔板 #

命令行:

*  1 创建项目 `django-admin startproject cookie_test`
 *  2 创建后台APP `python manage.py startapp App`
 *  3 创建对应数据库 `create database cookie_test;`

修改文件

*  1 创建文件夹cookie\_test/template/ cookie\_test/static/
 *  2 修改配置文件 settings.py  
    INSTALLED\_APPS = (App,) 刚创建的后台APP  
    ‘django.middleware.csrf.CsrfViewMiddleware’, \# 需要被注释  
    添加 TEMPLATES\{  
    ‘DIRS’: \[  
    os.path.join(BASE\_DIR, “template”.replace("\\",’/’)),  
    os.path.join(BASE\_DIR, “App”.replace("\\",’/’)),  
    \],\}  
    数据库  
    DATABASES = \{  
    ‘default’: \{  
    \# ‘ENGINE’: ‘django.db.backends.sqlite3’,  
    \# ‘NAME’: os.path.join(BASE\_DIR, ‘db.sqlite3’),  
    ‘ENGINE’: ‘django.db.backends.mysql’,  
    ‘NAME’ : “cookie\_test”,  
    ‘USER’ : ‘root’,  
    ‘PASSWORD’:‘zjq’,  
    ‘HOST’ :‘localhost’,  
    ‘POST’ :3306,  
    \}  
    \}  
    中文  
    LANGUAGE\_CODE = ‘en-us’改’zh-hans’ \# 汉字  
    静态路径  
    STATIC\_URL = ‘/static/’  
    STATICFILES\_DIRS = (  
    os.path.join(BASE\_DIR, “static”.replace("\\", “/”)),  
    )
 *  3 修改views.py与urls.py,创建对应HTML,浏览器请求确定魔板魔板没有问题\\
 *  4 在models里面建立表Student, 将来在数据库中呈现的就是cookie\_test/App\_Student
 *  5 将表在admin中注册 admin.site.register(Student) \# 安装表,admin请求时会显示该表
 *  6 更新数据库连接  
    `python manage.py validate`  
    `python manage.py makemigrations`  
    `python manage.py syncdb`
 *  7 查看数据库 出现cookie\_test/App\_Student

# 二、上传数据 #

def first_test(request):
        register = Register()
    
        if request.method == "POST" and request.POST:
            # 传递参数
            user = request.POST["user"]
            password = request.POST["password"]
            phone = request.POST["phone"]
    
            # 密码加密
            hash = hashlib.md5()
            hash.update(password.encode("UTF-8"))
            password = hash.hexdigest()
    
            # 上传数据库
            u = Student()
            u.name = user
            u.password = password
            u.phone = phone
            u.save()
    
        return render_to_response("first_test.html", locals())

# 三、创建数据上传完成提示, 使用form魔板 #

## 1. 新建forms.py ##

from django import forms
    # 生成forms表单
    class Register(forms.Form):
        user = forms.CharField(max_length=32, label="用户名")  # 默认显示user, 添加label显示label名
        password = forms.CharField(max_length=32)
        phone = forms.CharField(max_length=15)
    
        def clean_password(self): # 函数明命名必须clean_字段名称
            password = self.cleaned_data["password"] # 获取要判断的数据
            if password[0].isdigit():  # 判断数字
                raise forms.ValidationError("firs cann't be number")
            return password

## 2.HTML调用forms.py ##

注意将/static/js/jquery.1.11.3.min.js,随便找个网站, 下载一个就行

<!DOCTYPE html>
    <html>
    <head>
    	<meta charset="utf-8">
    	<title>first_test</title>
    	<script src="/static/js/jquery.1.11.3.min.js"> </script>
    </head>
    <body>
    	
    
    	<form action="" method="POST">
    		{
       {register}}
    		<button onclick="jqAjax()">click</button>
    	</form>
    	<script> function jqAjax(){ var json_data = JSON.toString({ "for":"hello"}) $.ajax( { url:"http://127.0.0.1:8000/post_data/", //请求数据为son_data type:"POST", data:json_data, beforeSend:function(){ }, success:function(data){ if(data["statue"]=="success"){ alert("提交成功") } else{ alert("失败") } }, error:function(err){ alert(err) } } ) } </script>
    
    </body>
    </html>

## 3. views.py ##

from django.shortcuts import render_to_response
    from App.models import *
    import hashlib
    from App.forms import *
    from django.http import JsonResponse
    # Create your views here.
    def first_test(request):
        register = Register()
    
        if request.method == "POST" and request.POST:
            # 传递参数
            user = request.POST["user"]
            password = request.POST["password"]
            phone = request.POST["phone"]
    
            # 密码加密
            hash = hashlib.md5()
            hash.update(password.encode("UTF-8"))
            password = hash.hexdigest()
    
            # 上传数据库
            u = Student()
            u.name = user
            u.password = password
            u.phone = phone
            u.save()
    
        return render_to_response("first_test.html", locals())
    
    
    def post_data(request):
        if request.method == "POST" and request.POST:
            response_data = { "statue": "success"}
        else:
            response_data = { "statue": "error"}
    
        return JsonResponse(response_data)

## 4 urls.py请求与反馈 ##

from django.conf.urls import include, url
    from django.contrib import admin
    from App.views import *
    
    urlpatterns = [
        url(r'^admin', include(admin.site.urls)),
        url(r'^first_test/$', first_test),
        url(r'^post_data/$', post_data),
    ]

# 四、cookie #

cookie标识为当前用户存到的本地的验证信息, 如访问京东,第一次登陆之后,后期登陆无需在重新输入账号密码,因为cookie标识在本地, 当再次访问京东网址时, cookie会告诉京东刚用户登陆无需在登陆的一个flag

## 1 test\_cookie.html ##

<!DOCTYPE html>
    <html>
    <head>
    	<meta charset="utf-8">
    	<title>test_cookie</title>
    </head>
    <body>
    	<form>
    		
    	</form>
    </body>
    </html>

## 2 views.py 设置cookie ##

def test_cookie(request):
    
        response = render_to_response('test_cookie.html', locals())
    
        response.set_cookie("name", "for", 3600) # 在本地存放name for 为3600秒, 在这个时间内,都是以这个for用户来访问的
        
        return response

## 3 urls.py调用 ##

url(r'^test_cookie/$', test_cookie),

## 4 结果 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDYwODE5_size_16_color_FFFFFF_t_70]  
在访问同一网站  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDYwODE5_size_16_color_FFFFFF_t_70 1]

[Link 1]: https://download.csdn.net/download/qq_32460819/12179139
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDYwODE5_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20200221174341860.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDYwODE5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDYwODE5_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200221174520273.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzMyNDYwODE5,size_16,color_FFFFFF,t_70