Is Django MVC? Not a "true" MVC framework, the "C" is handled by the framework itself.
Django is MTV(Model-Template-View): Model: Data access layer, Template: Presentation layer, View: Business logic layer - Accesses the model and displays the appropriate template.
The Concept Of Apps (Module): Each project/website has separate "apps", can have a single app.
Python Virtual Env: Recommended way to use Django. Create isolated environments with their own directories. Separates your Django project instances.
下载安装python: https://www.python.org/downloads/, 勾选Add Python 3.6 to PATH MySQL安装XAMPP: https://www.apachefriends.org/index.html 以管理员身份打开命令窗口: pip install virtualenvwrapper-win mkvirtualenv py1 #安装Python Virtual Env, 不同环境之间切换的命令: workon py1 pip install django pip install mysqlclient django-admin startproject djangoproject #创建项目命令,djangoproject是项目名称 python manage.py runserver #运行项目的命令
"You have 13 unapplied migration(s)." #意思是表没有创建 django默认使用sqllite数据库.
localhost/phpmyadmin/ #打开mysql数据库的管理页面
settings.py设置使用mysql数据库: DATABASES = { 'default':{ 'ENGINE':'django.db.backends.mysql', 'NAME':'djangoproject', 'USER':'root', 'PASSWORD':'123456', 'HOST':'localost', 'PORT':'' } }
创建默认表: python manage.py migrate
python manage.py runserver启动服务,打开页面localhost:8000/admin打开登录页面 创建登录用户: python manage.py createsuperuser --username=steve --email=steve@qq.com
创建app: python manage.py startapp posts 会生成posts文件夹和文件, settings.py文件INSTALLED_APPS里面添加'posts',主urls.py文件中添加: from django.conf.urls import url,include urlpatterns=[url(r'^posts/',include('posts.urls'))] posts文件夹下创建urls.py: urlpatterns = [ url(r'^$',views.index,name='index') #^表示开始,$表示结束,表示访问localhost/post/即是访问views.py下面的index方法. ] views.py: from django.shortcuts import render from django.http import HttpResponse def index(request): #return HttpResponse('Hello World') return render(request, 'posts/index.html',{'title':'Latest Posts'}) #创建posts/templates/posts/index.html文件
materializecss.com/getting-started.html
在models.py中创建Posts类, 运行命令python manage.py makemigrations posts创建了文件0001_Initial.py, 运行命令 python manage.py migrate 创建表posts_posts. 在posts/admin.py文件中注册: from .models import Posts admin.site.register(Posts)
class="center-align"不起作用, 设置style="display:block". display默认为inline.
Bug: 在admin页面会看到Postss的link,要去掉多余的s,解决方案: 在models.py文件中class Posts下添加: def str(self): return self.title class Meta: verbose_name_plural = "Posts"
设置root url为posts页面: 在主urls.py中添加 url(r'^$',include('posts.urls'))
