django_base.txt

服务器程序和应用程序
WSGI

socket封装
wsgiref

MVC:Model View Controller

model          数据库相关
view           html页面
controller     处理请求


MTV:Model Template View

template   html页面
view       处理请求



路由系统


class test:
	def __str__(self):
		return 'this is in str'
st = test()
print st
# __str__  直接打印对象的实现方法

models 中的类相当于数据库中的 table
models 中的每个属性是数据库中的一个字段(一个列)


models.py

from django.db import models

class Reporter(models.Model):
    full_name = models.CharField(max_length=70)

    def __str__(self):              # __unicode__ on Python 2
        return self.full_name

class Article(models.Model):
    pub_date = models.DateField()
    headline = models.CharField(max_length=200)
    content = models.TextField()
    reporter = models.ForeignKey(Reporter, on_delete=models.CASCADE)

    def __str__(self):              # __unicode__ on Python 2
        return self.headline

admin.py

from django.contrib import admin
from . import models

admin.site.register(models.Article)
# 注册模型动态生成管理页面

urls.py

from django.conf.urls import url
from . import views

urlpatterns = [
	url(r'^articles/([0-9]{4})/$', views.year_archive),
	url(r'^articles/([0-9]{4})/([0-9],{2})/$', views.month_archive),
	url(r'^admin/', admin.site.urls),
	]
# urlconf 如果请求url为 ／articles/2005/05/ 则调用函数 news.views.month_archive(request, '2005', '05')

views.py

from django.shortcuts import render
from .models import Article

def year_archive(request, year):
	a_list = Article.objects.filter(pub_date_year=year)
	context = {'year': year, 'article_list': a_list}
	return render(request, 'news/year_archive.html', context)
# 每个视图只负责返回 httpresponse 对象或者抛出一个异常。

url()
regex view kwargs name

settings.py

INSTALLED_APPS = [
    'django.contrib.admin',  # 管理站点
    'django.contrib.auth',  # 认证系统
    'django.contrib.contenttypes',  # 用于内容类型的框架
    'django.contrib.sessions',  # 会话框架
    'django.contrib.messages',  # 消息框架
    'django.contrib.staticfiles',  # 管理静态文件的框架
    'app1.apps.App1Config', # 新建的app
]

# Django 会从 MIDDLEWARE_CLASSES 中按照从上到下的顺序一个个执行中间件中的 process_request 函数，而其中 process_response 函数则是最前面的最后执行。
# process_request()
# process_exception() (only if the view raised an exception)
# process_template_response()
# process_response()

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

migration 迁移
python manage.py makemigrations	# app1/migrations/0001_initial.py 生成迁移文件
python manage.py sqlmigrate app1 0001	# 查看迁移文件的SQL语句
python manage.py migrate	# 将改变更新到数据库中

def __str__():
	return self.question_text

imporrt django
django.setup()
# 效果相当于 python manage.py shell
# 需要先设置环境变量 DJANGO_SETTINGS_MODULE=dj1.settings,
# 需要确保 python path 可以运行 import dj1

app1/admin.py
from django.contrib import admin
from .models imporrt Question

admin.site.registerr(Question)

127.0.0.1:8000/admin
python manage.py runserver 0.0.0.0:8000
settings.py ALLOWED_HOSTS=['*']