一、创建项目:
django-admin startproject mysite
二、到该目录下,创建app:
python manage.py startapp learn # learn 是一个app的名称
并将app添加到mysite/mysite/settings.py 中:
INSTALLED_APPS = (
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'learn',
)
三、定义处理请求的函数:
在文件views.py中定义:
#coding:utf-8 from django.http import HttpResponse def index(request): return HttpResponse(u"欢迎光临 Mysite项目")
注意编码.
四、关联函数和请求:
在mysite/mysite/urls.py 中修改:
from django.conf.urls import include, url from django.contrib import admin urlpatterns = [ url(r'^$','learn.views.index',name='home'), url(r'^admin/', include(admin.site.urls)), #这一行系统默认 ]
注意:url中是用正则表达式匹配URL的。name的值为处理URL的函数名,string说明了函数的路径.
五、获取请求中的参数:(url='http://localhost:8000/?a=123&b=bat')
from django.shortcuts import render from django.http import HttpResponse def add(request): #此为处理请求的函数 a = request.GET['a'] b = request.GET['b'] c = int(a)+int(b) return HttpResponse(str(c))
六、URL中正则的灵活运用:
eg:网站采用 http://host:80/calc/3/4/这样的方式
更改处理函数:views.py
def add2(request,a,b): c = int(a) + int(b) return HttpResponse(str(c))
更改正则表达式:urls.py
url(r'^calc/(d+)/(d+)/$', 'calc.views.add2', name='add2'),
七、前端页面模版应用:
在app的目录下创建templates文件夹,在该文件夹下创建模版文件:home.html (Django项目默认会寻找该目录下的模版文件)
[cos@localhost templates]$ ls ad.html base.html bottom.html home.html nav.html tongji.html # 这些模版是项目引用的. [cos@localhost templates]$ cat home.html {% extends 'base.html' %} {% block title %}welcome home html{% endblock %} #覆盖默认内容,否则就显示继承自base.html中的默认内容. {% block content %} {% include 'ad.html' %} #引用ad.html模版. this is index page,welcome! {% endblock %}
更改处理请求的函数,向客户端返回该模版文件:(当然内容是经过渲染的)
在app/views.py中
from django.shortcuts import render def home(request): return render(request, 'home.html')
八、启动项目:
[cos@localhost mysite]$ python manage.py runserver 0.0.0.0:8000 Performing system checks... System check identified no issues (0 silenced). October 20, 2015 - 14:31:54 Django version 1.8.5, using settings 'zqxt_tmpl.settings' Starting development server at http://0.0.0.0:8000/ Quit the server with CONTROL-C. [20/Oct/2015 14:31:54] "GET / HTTP/1.1" 500 126680 [20/Oct/2015 14:32:07] "GET / HTTP/1.1" 500 129469 [20/Oct/2015 14:33:37] "GET / HTTP/1.1" 200 280