django学习笔记【002】创建第一个django app

2.3.3

1、创建一个名叫polls的app

python3.5 manage.py startapp polls

tree mysite/
mysite/
├── db.sqlite3
├── manage.py
├── mysite
│   ├── __init__.py
│   ├── __pycache__
│   │   ├── __init__.cpython-35.pyc
│   │   ├── settings.cpython-35.pyc
│   │   ├── urls.cpython-35.pyc
│   │   └── wsgi.cpython-35.pyc
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
└── polls
├── admin.py
├── apps.py
├── __init__.py
├── migrations
│   └── __init__.py
├── models.py
├── tests.py
└── views.py

2、给polls这个app编写一个视图、也就是为polls/views.py 中增加相应输出html的文件；修改后polls/views.py 的内容如下：

from django.shortcuts import render
from django.http import HttpResponse
# Create your views here.

def index(request):
return HttpResponse("this is polls.index")

3、为视图关联一个url，这样通过这个url就能访问这个视图了；于是在pollsg下创建一个urls.py文件；

　 polls/urls.py 的内容如下：

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

urlpatterns=[
url(r'^$',views.index,name='index'),
]

4、把polls的url配置增加到整个project的url配置中去，所以把mysite/urls.py 文件的内容改成如下：

"""mysite URL Configuration

The `urlpatterns` list routes URLs to views. For more information please see: https://docs.djangoproject.com/en/1.10/topics/http/urls/ Examples:
Function views
1. Add an import:  from my_app import views
2. Add a URL to urlpatterns:  url(r'^$', views.home, name='home')
Class-based views
1. Add an import:  from other_app.views import Home
2. Add a URL to urlpatterns:  url(r'^$', Home.as_view(), name='home')
Including another URLconf
1. Import the include() function: from django.conf.urls import url, include
2. Add a URL to urlpatterns:  url(r'^blog/', include('blog.urls'))
"""
from django.conf.urls import url,include # 这里还要增加include的引用
from django.contrib import admin

urlpatterns = [
url(r'^polls/', include('polls.urls')), #注意include的参数中用的是 ‘.’号而不是目录分隔'/'
url(r'^admin/', admin.site.urls),
]

5、测试能不能访问到polls/view/index这个视图