【下载文档:  Django 创建新App及其常用命令的实现方法.txt 】

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Django 创建新App及其常用命令的实现方法
创建新的项目
django-admin.py startproject my_project
创建新的App
# 在Django项目(my_project)的根目录下执行
python3 manage.py startapp my_app
启动Django中的开发服务器
# make new migrations
python3 manage.py makemigrations
# apply all migrations
python3 manage.py migrate
# run server
python3 manage.py runserver
创建models
class App1(models.Model):
title = models.CharField(max_length=100)
category = models.CharField(max_length=50, blank=True)
date_time = models.DateTimeField(auto_now_add=True)
def __unicode__(self):
return self.title
class Meta:
ordering = ['-date_time']
进入Django中的交互式shell
python3 manage.py shell
from app1.models import App1
# create(增加操作)
App1.objects.create(title='title',category='category1')
# all和get(查看操作)
App1.objects.all()
App1.objects.get(id=1)
# update(修改操作)
demo = App1.objects.get(id=1)
demo.title
demo.title='title2'
# delete(删除操作)
demo.delete()
创建一个超级用户
python3 manage.py createsuperuser
# 输入http://127.0.0.1:8000/admin登录后台
数据库信息的增加和删除，admin.py中增加代码
from article.models import App1
admin.site.register(App1)
Views和URL操作
# views.py
from django.http import HttpResponse
def home(request):
return HttpResponse("Hello World, Django")
# urls.py
url(r'^$', 'app1.views.home')
URL传参
# views.py
def detail(request, number):
return HttpResponse("The number is %s." % number)
# urls.py
url(r'^([0-9]+)/', 'app1.views.detail', name='detail')
URL传参查询数据库
# views.py
def database(request, args):
post = App1.objects.all()[int(args)]
str = ("title = %s, category = %s, date_time = %s" % (post.title, post.category, post.date_time))
return HttpResponse(str)
# urls.py
url(r'^id/([0-9])+/', 'article.views.database', name='database'),
将代码上传到Github
# 在github中新建仓库django-blog
# 在项目根目录下执行
git init
git remote add Django
git@github.com:ybbz/django-blog.git
git add .
git status
git commit -m "django blog init"
git pull Django master && git push Django master
Error: That port is already in use.
ps aux | grep -i manage
kill -9 ****
python3 manage.py runserver
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持中文源码网。