小白学习django第六站-http相关

请求与相应

HttpRequest对象API

def home(request):

    print('path:', request.path)

    print('mothod:', request.method)

    print('encoding:', request.encoding)

    print('GET:', request.GET)

    print('POST:', request.POST)

    print('FILES', request.FILES)

    print('COOKIES:', request.COOKIES)

    print('session:', request.session)

    print('is_ajax:', request.is_ajax())

path: /blog1/home/

mothod: GET

encoding: None

GET: <QueryDict: {}>

POST: <QueryDict: {}>

FILES <MultiValueDict: {}>

COOKIES: {'csrftoken': 'xnjakTTg7c8cy6pnyZzgKg8fkyXkMBcl3LXCnMeQC8n4oLIByU0U6Pr3DGCRj6EO', 'sessionid': '7it5s9n3zn8or27i9kxqiewjiq6rvjfb'}

session: <django.contrib.sessions.backends.db.SessionStore object at 0x7fbcd958f9e8>

is_ajax: False

views.py

def index(request):

    print(request.path)         # 请求路径

    print(request.method)       # 请求方法

    print(request.encoding)     # 编码格式

    # return HttpResponse('1111')

    return render(request, 'blog/get_post_test.html')

def get_text(request):

    # if request.method == 'GET':

        # return render(request, 'blog/get_post_test.html')

    # elif request.method == 'POST':

    a = request.GET.get('a')

    b = request.GET.get('b')

    print(a, b)

    return HttpResponse('xxxxxxxx')

def post_text(request):

    if request.method == 'GET':

        return render(request, 'blog/get_post_test.html')

    elif request.method == 'POST':

        a = request.POST.getlist('a') # getlist 一键多值

        # a = request.POST.get('a')

        # b = request.POST.get('b')

        # print(a, b)

        print(a)

        return HttpResponse('xxxxxxxx')

html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

<form action="" method="post">

{#<form action="" method="get">#}

    {% csrf_token %} {# 防止跨域请求 #}

    <input type="text" name="a" id="a">

    <input type="text" name="a" id="b">

    <input type="submit" value="提交" id="c">

</form>

</body>

</html>

类视图

views.py

from django.shortcuts import render, redirect, reverse

from django.http import HttpResponse

from .models import BlogModle2

from django.views import View

# Create your views here.

class BlogIndex(View):

    def get(self, request):

        return render(request, 'blog/demo_index.html')

class BlogAdd(View):

    def get(self, request):

        return render(request, 'blog/demo_add.html')

    def post(self, request):

        title = request.POST.get('title')

        content = request.POST.get('content')

        blog = BlogModle2(title=title, content=content)

        blog.save()

        return render(request, 'blog/demo_add.html')

class BlogList(View):

    def get(self, request):

        blog_list = BlogModle2.objects.all()

        return render(request, 'blog/demo_list.html', context={'blog_list': blog_list})

class BlogDetail(View):

    def get(self, request, blog_id):

        blog = BlogModle2.objects.get(id=blog_id)

        return render(request, 'blog/demo_detail.html', context={'blog': blog})

class BlogDelete(View):

    def get(self, request, blog_id):

        blog = BlogModle2.objects.get(id=blog_id)

        if blog:

            blog.delete()

            return redirect(reverse('blog_list'))

        else:

            return HttpResponse('不存在这条博客')

class BlogEdit(View):

    def get(self, request, blog_id):

        blog = BlogModle2.objects.get(id=blog_id)

        return render(request, 'blog/demo_add.html', context={'blog': blog})

    def post(self, request, blog_id):

        blog = BlogModle2.objects.get(id=blog_id)

        blog.title = request.POST.get('title')

        blog.content = request.POST.get('content')

        blog.save()

        return redirect(reverse('blog_list'))

urls.py

path('index/', views.BlogIndex.as_view(), name='blog_index'),

    path('add/', views.BlogAdd.as_view(), name='blog_add'),

    path('list/', views.BlogList.as_view(), name='blog_list'),

    path('detail/<blog_id>', views.BlogDetail.as_view(), name='blog_detail'),

    path('delete/<blog_id>', views.BlogDelete.as_view(), name='blog_delete'),

    path('edit/<blog_id>', views.BlogEdit.as_view(), name='blog_edit'),

文件上传

先在settings.py设置路径

创建文件夹

编写views.py

import os

from mysite.settings import MEDIA_ROOT

class Upload_file(View):

    def get(self, request):

        return render(request, 'blog/file.html')

    def post(self, request):

        # f1 = request.FILES['file']

        f1 = request.FILES.get('file')

        f1_name = os.path.join(MEDIA_ROOT, f1.name)

        with open(f1_name, 'wb') as f:

            for i in f1.chunks():

                f.write(i)

        return HttpResponse('上传成功')

html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

<form action="" method="post" enctype="multipart/form-data">

    {% csrf_token %}

    <input type="file" name="file">

    <input type="submit">

</form>

</body>

</html>

HttpResponse对象

属性

def index(request):

    response = HttpResponse('')

    print(response.content)

    print(response.status_code)

    print(response.charset)

    return response

方法

设置cookie

# 设置cookie

import datetime

def set_cookie(request):

    response = HttpResponse('设置cookie')

    response.write('我是写入进去的')

    # response.set_cookie('name', 'ing', max_age=100)  # 设置多少秒之后过期

    response.set_cookie('name', 'ing', expires=datetime.datetime(2019, 9, 6)) # 设置过期日期

    return response

def get_cookie(request):

    cookie = request.COOKIES

    print(cookie.get('name'))

    return HttpResponse('获取cookie')

def delete_cookie(request):

    rs = HttpResponse("删除cookie")

    rs.delete_cookie('name')

    return rs

返回json数据

登录案例，设置session,需要先执行makemigrations， migrate

def home(request):          # 主页

    a = 1

    # b = a + '1'

    print('只是我视图函数在调用')

    username = request.session.get('username', '未登录')

    return render(request, 'form_test/home.html', context={'username': username})

class LoginTest(View):      # 登录

    def get(self, request):

        return render(request, 'form_test/login.html')

    def post(self, request):

        username = request.POST.get('username')

        request.session['username'] = username  # 字典传值， 会存到数据库

        request.session.set_expiry(None)  # 设置过期时间， 默认两周

        print(request.session)

        return redirect(reverse('home'))

def login_out(request):         # 登出

    request.session.flush()         # 清除会话数据

    return redirect(reverse('home'))

settings中设置

# 是否关闭浏览器使得session过期，默认False

# SESSION_EXPIRE_AT_BROWSER_CLOSE = False

# 是否每次请求都保存session，默认修改之后保存

# SESSION_SAVE_EVERY_REQUEST = False

# session的cookie失效日期，默认两周

# SESSION_COOKIE_AGE = 1209600

创建models.py模型

from django.db import models

# Create your models here.

class UserModel(models.Model):

    username = models.CharField(max_length=30, unique=True)

    password = models.CharField(max_length=100)

    email = models.EmailField()

django form表单的使用，登录注册案例

views.py

from .models import UserModel

from .forms import RegisterForm, LoginForm

class Register(View):

    def get(self, request):

        form = RegisterForm()   # 实例化一个表单实例

        return render(request, 'form_test/register.html', context={'form': form})

    def post(self, request):

        form = RegisterForm(request.POST)   # 获取form表单的数据

        if form.is_valid():  # 验证数据是否合法

            username = form.cleaned_data.get('username')    # 拿数据

            password = form.cleaned_data.get('password')

            password_repeat = form.cleaned_data.get('password_repeat')

            email = form.cleaned_data.get('email')

            if password == password_repeat:

                UserModel.objects.create(username=username, password=password, email=email)

                return HttpResponse('注册成功')

            else:

                return HttpResponse('注册失败')

        else:

            return HttpResponse('两次密码不一致')

class Login(View):

    def get(self, request):

        form =LoginForm()       # 先获得表单实例

        return render(request, 'form_test/login.html', context={'form': form})

    def post(self, request):

        form = LoginForm(request.POST)  # 获取发送的请求值

        if form.is_valid():     # 检测数据是否合法

            username = form.cleaned_data.get('username')

            password = form.cleaned_data.get('password')

            user = UserModel.objects.filter(username=username, password=password)

            if user:

                request.session['username'] = username

                return redirect(reverse('home'))

            else:

                return redirect(reverse('register'))

        else:

            return HttpResponse('登录失败')

forms.py

from django import forms

# 可以验证也可以生成前端代码

class RegisterForm(forms.Form):                 # 注册表单

    username = forms.CharField(max_length=30, min_length=6)

    password = forms.CharField(max_length=30, min_length=6,

                               widget=forms.PasswordInput(attrs={'placeholder': '请输入密码'}))

    password_repeat = forms.CharField(max_length=30, min_length=6,

                                      widget=forms.PasswordInput(attrs={'placeholder': '请输入密码'}))

    email = forms.EmailField()

class LoginForm(forms.Form):        # 登录表单

    username = forms.CharField(max_length=30, min_length=6,

                               widget=forms.TextInput(attrs={'placeholder': '请输入用户名'}))

    password = forms.CharField(max_length=30, min_length=6,

                               widget=forms.PasswordInput(attrs={'placeholder': '请输入密码'}))

html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

<form action="" method="post">

    {% csrf_token %}

    {{ form.as_p }}

{#    <input type="text" name="username">#}

    <input type="submit" value="登录">

</form>

</body>

</html>

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

<form action="" method="post">

    {% csrf_token %}

    {{ form.as_p }}

    <input type="submit" value="注册">

</form>

{{ username }}

</body>

</html>

小白学习django第六站-http相关的更多相关文章

小白学习django第四站-关联数据库
使用mysql连接django首先要配置好相关环境首先在setting.py配置数据库信息(需要现在mysql中创建一个数据库) 在setting.py那个目录的__init__.py文件中写入之 ...
小白学习django第五站-简易案例
首先在setting.py文件中编写数据库配置内容 DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', 'NAME': ' ...
小白学习django第三站-自定义过滤器及标签
要使用自定义过滤器和标签,首先要设置好目录结构现在项目目录下建立common的python包再将common加入到setting.py中的INSTALLED_APP列表中在common创建目录t ...
小白学习django第一站-环境配置
Django简单来说就是用Python开发的一个免费开源的Web框架使用Django,使你能够以最小的代价构建和维护高质量的Web应用. 开搞!!! 工具准备: linux(ubuntu) + py ...
小白学习django第二站-模版配置
上一站说道app创建,接下来我们来配置app的url路由首先需要到setting.py中添加book这个app, 再到django_test文件里的urls添加路由 include() : 这个函数 ...
小白学习Spark系列六：Spark调参优化
前几节介绍了下常用的函数和常踩的坑以及如何打包程序,现在来说下如何调参优化.当我们开发完一个项目,测试完成后,就要提交到服务器上运行,但运行不稳定,老是抛出如下异常,这就很纳闷了呀,明明测试上没问题, ...
小白学习tornado框架第一站-环境设置
首先建立一个虚拟环境 mkvirtualenv -p /usr/bin/python3 tornado_1 安装tornado框架 pip install tornado pycham中建立同步创 ...
学习django就看这本书了！django book 2.0中文版
所属网站分类: 资源下载 > python电子书作者:熊猫烧香链接:http://www.pythonheidong.com/blog/article/29/ 来源:python黑洞网 dj ...
小白神器 - Django - 起步
小白神器 - Django - 起步一. Django下载 1. 命令行 pip install django==1.11.16 pip install django==1.11.16 -i ht ...

随机推荐

centos后台运行python程序
在服务器上,为了退出终端,程序依然能够运行,需要设置程序在后台运行. 关键的命令:nohup *基本用法:进入要运行的py文件目录前 nohup python -u test.py > tes ...
JVM-GC算法（三）-分代收集算法
对象分类上次已经说过,分代收集算法是针对对象的不同特性,而使用合适的算法,这里面并没有实际上的新算法产生.与其说分代收集算法是第四个算法,不如说它是对前三个算法的实际应用. 首先我们来探讨一下对象 ...
springboot+dubbo+zookeeper+mybatis
参考地址:https://www.cnblogs.com/gaopengfirst/p/9555240.html 首先创建一个maven项目: 再在该父项目中创建3个module,分别是:provid ...
System.Runtime.CompilerServices.Unsafe
System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime.CompilerServices.Un ...
如何利用css进行网页布局
一.单列布局(类似于搜狐网站) 如: 代码为: 二.两列布局 1.固定宽度代码为: 2.自适应代码为: 三.三列布局代码为: 四.混合布局就是在前面的基础上,在进行划分块如: 代码为:
HTML头信息标签和标题标签
<html>  <head> <meta htt ...
css中设置table中的td内容自动换行
word-break:break-all和word-wrap:break-word都是能使其容器如DIV的内容自动换行. 它们的区别就在于: 1,word-break:break-all 例如div宽 ...
Sql UpdateOrInsert
SqlServer(先更新,受影响条数为0,则Insert,通过事务): begin tran update table set column=columnvalue where wherestr b ...
Service-stack.redis 使用PooledRedisClientManager 速度慢的原因之一
现在越来越多的开发者使用service-stack.redis 来进行redis的访问,但是获取redisclient的方式有多种方式,其中有一种从缓冲池获取client的方式很是得到大家的认可. L ...
layui相关总结
表格操作实例1: https://sun_zoro.gitee.io/layuitableplug/testTableCheckboxDisabled?v0.1.9

小白学习django第六站-http相关

小白学习django第六站-http相关的更多相关文章

随机推荐

热门专题