Django 創建新App及其常用命令的實現方法

這篇文章主要介紹了Django 創建新App及其常用命令的實現方法，文中通過示例代碼介紹的非常詳細，對大家的學習或者工作具有一定的參考學習價值，需要的朋友們下面隨着小編來一起學習學習吧

創建新的項目

django-admin.py startproject my_project

創建新的App

# 在Django項目(my_project)的根目錄下執行
python3 manage.py startapp my_app

啓動Django中的開發服務器

# make new migrations
python3 manage.py makemigrations
 
# apply all migrations
python3 manage.py migrate
 
# run server
python3 manage.py runserver

創建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']

進入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(刪除操作)
demo.delete()

創建一個超級用戶

python3 manage.py createsuperuser
 
# 輸入http://127.0.0.1:8000/admin登錄後臺

數據庫信息的增加和刪除，admin.py中增加代碼

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傳參

# 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傳參查詢數據庫

# 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'),

將代碼上傳到Github

# 在github中新建倉庫django-blog
# 在項目根目錄下執行
git init
git remote add Django
[email protected]: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內容，希望對大家的學習有所幫助，也希望大家多多支持神馬文庫。