Tutorial_1：Request and Response

一、创建一个Project

django-admin startproject longgb246

产生目录

longgb246/
    manage.py
    mysite/
        __init__.py
        settings.py
        urls.py
        wsgi.py

二、开启服务

python manage.py runserver

端口号：http://127.0.0.1:8000/
还可以改变端口，或者IP

python manage.py runserver 8080
python manage.py runserver 0.0.0.0:8000

三、开启app

python manage.py startapp polls

得到以下目录

polls/
    __init__.py
    admin.py
    apps.py
    migrations/
        __init__.py
    models.py
    tests.py
    views.py

3.1 写第一个view

打开polls/views.py
写入

from django.http import HttpResponse
def index(request):
    return HttpResponse("Hello, world. You're at the polls index.")

3.2 创建app的urls

得到以下目录

polls/
    __init__.py
    admin.py
    apps.py
    migrations/
        __init__.py
    models.py
    tests.py
    urls.py
    views.py

在urls.py中写到

from django.conf.urls import url
from . import views
urlpatterns = [
    url(r'^$', views.index, name='index'),
]

3.3 创建项目的urls

在目录的urls.py下
写入

from django.conf.urls import include, url
from django.contrib import admin
urlpatterns = [
    url(r'^polls/', include('polls.urls')),
    url(r'^admin/', admin.site.urls),
]

把polls写入其中。