Django使用回忆:
1、安装django:
pip install django==1.9
2、创建项目及应用:
django-admin startproject web django-admin startap blog
3、配置数据库、二级url:
web/setting.py:
INSTALLED_APPS = [
‘django.contrib.admin‘,
‘django.contrib.auth‘,
‘django.contrib.contenttypes‘,
‘django.contrib.sessions‘,
‘django.contrib.messages‘,
‘django.contrib.staticfiles‘,
‘blog‘,
]
...
DATABASES = {
‘default‘: {
# ‘ENGINE‘: ‘django.db.backends.sqlite3‘,
# ‘NAME‘: os.path.join(BASE_DIR, ‘db.sqlite3‘),
‘ENGINE‘: ‘django.db.backends.mysql‘,
‘NAME‘:‘test_blog‘,
‘USER‘:‘ahaii‘,
‘PASSWORD‘:‘123456‘,
‘HOST‘:‘‘,
‘PORT‘:‘‘,
}
}
web/urls.py:
urlpatterns = [
url(r‘^admin/‘, admin.site.urls),
url(r‘^blog/‘, include(‘blog.urls‘)),
]
blog/urls.py:
from blog import views
urlpatterns = [
url(r‘^$‘, views.index),
]
blog/views.py:
from django.shortcuts import render,HttpResponse
# Create your views here.
def index(request):
return HttpResponse(‘Hello Django‘)
4、创建数据库模型:
blog/models.py:
from django.db import models
# Create your models here.
class Article(models.Model):
title = models.CharField(max_length=100)
category = models.CharField(max_length=50,blank=True)
date_time = models.DateTimeField(auto_now_add=True)
content = models.TextField(blank=True,null=True)
def __unicode__(self):
return self.title
class Meta:
ordering = [‘-date_time‘]
5、同步数据库:
python manage.py migrate python manage.py makemigrations
6、创建超级用户:
python manage.py createsuperuser
7、利用python shell交互模式操作数据库:
python manage.py shell >>>from blog.models import Article >>>Article.objects.create(title=‘...‘,category=‘...‘,content=‘...‘)//插入数据 >>>Article.objects.all()//查询所有记录,返回列表 >>>Article.objects.get(id=1)//查询第一条>>>a=Article.objects.get(title=‘Car‘)>>>a.content=‘The traffice is so busy!‘//修改内容>>>>a.save()//写入数据库
8、动态url:(获取url中的参数)
blog/views.py:
def detail(request,args): post = Article.objects.all()[int(args)] //默认输入为字符串，转换为整型，列表索引 str = (‘title=%s,category=%s,content=%s‘) %(post.title,post.category,post.content) return HttpResponse(str)
blog/urls.py:
urlpatterns = [
url(r‘^$‘, views.index),
url(r‘(?P<args>\d+)/$‘,views.detail)// \w+可匹配数字和字母
]
9、使用模版:
web项目下创建templates/test.html，设置模版路径:
web/setting:
TEMPLATES = [
{
‘BACKEND‘: ‘django.template.backends.django.DjangoTemplates‘,
‘DIRS‘: [
os.path.join(BASE_DIR,‘templates‘)
],
‘APP_DIRS‘: True,
‘OPTIONS‘: {
‘context_processors‘: [
‘django.template.context_processors.debug‘,
‘django.template.context_processors.request‘,
‘django.contrib.auth.context_processors.auth‘,
‘django.contrib.messages.context_processors.messages‘,
],
},
},
]
templates/test.html:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Just for test template</title>
<style>
body{
background-color: red;
}
strong{
color:lightseagreen;
}
</style>
</head>
<body>
<h1>Hello Django</h1>
<strong>{{ time }}</strong>
</body>
</html>
blog/views:
from datetime import datetime
def template(request):
return render(request,‘test.html‘,{‘time‘:datetime.now()})
blog/urls:
urlpatterns = [
url(r‘template/$‘,views.template)
]
时间： 2024-08-26 01:49:54