4、Django(django版本1.10.4)

下载开发包第三方镜像(加速下载)
pip install -i htps://pypi.douban.com/simple/ django ==1.10.4
卸载方法
pip uninstall django

(python3) C:\Users\Administrator>pip install django==1.10.4
Requirement already satisfied: django==1.10.4 in e:\evns\python3\lib\site-packages (1.10.4)
gerapy 0.8.5 has requirement django>=1.11, but you'll have django 1.10.4 which is incompatible.

(python3) C:\Users\Administrator>pip show django
Name: Django
Version: 1.10.4
Summary: A high-level Python Web framework that encourages rapid development and clean, pragmatic design.
Home-page: http://www.djangoproject.com/
Author: Django Software Foundation
Author-email: foundation@djangoproject.com
License: BSD
Location: e:\evns\python3\lib\site-packages
Requires:
Required-by:

    
    pip3 install django == 1.10.4

    
    
    C:\Python35\Scripts
    
    # 创建Django工程
    django-admin startproject 【工程名称】
    
        mysite
            - mysite        # 对整个程序进行配置
                - init
                - settings  # 配置文件
                - url       # URL对应关系
                - wsgi      # 遵循WSIG规范，uwsgi + nginx
            - manage.py     # 管理Django程序：
                                - python manage.py 
                                - python manage.py startapp xx
                                - python manage.py makemigrations
                                - python manage.py migrate
        
        
        
    # 运行Django功能
    python manage.py runserver 127.0.0.1:8001
    
    
    chouti
        - chouti
            - 配置
        - 主站 app
        - 后台管理 app
    
    
    
    # 创建app
    python manage.py startapp cmdb
    python manage.py startapp openstack
    python manage.py startapp xxoo....
    
    
    app：
        migrations     数据修改表结构
        admin          Django为我们提供的后台管理
        apps           配置当前app
        models         ORM,写指定的类  通过命令可以创建数据库结构
        tests          单元测试
        views          业务代码
    
    
    
    1、配置模板的路径
    
        TEMPLATES = [
                {
                    'BACKEND': 'django.template.backends.django.DjangoTemplates',
                    'DIRS': [os.path.join(BASE_DIR, 'templates')],
                    'APP_DIRS': True,
                    'OPTIONS': {
                        'context_processors': [
                            'django.template.context_processors.debug',
                            'django.template.context_processors.request',
                            'django.contrib.auth.context_processors.auth',
                            'django.contrib.messages.context_processors.messages',
                        ],
                    },
                },
            ]
    2、配置静态目录
        static
    
        STATICFILES_DIRS = (
            os.path.join(BASE_DIR, 'static'),
        )

        
        <link rel="stylesheet" href="/static/commons.css" />
    

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>
    

• 然后用pychram创建django程序方法:

  • 点击 file > New Project 然后新建如下图:

    
    
    image.png

• 选择Python的解析器(3.6) , 点击Create,

  
  
  image.png

• 得到以下目录:

  
  
  image.png
  
  
  image.png
  
  
  image.png
• 然后点击(http://127.0.0.1:8000/)

• 就能得到以下效果:

  
  
  image.png