Django's simple commands and implementation of the first page

1. Create a python virtual environment and install django

2. Create a django project

Order:django-admin startproject 项目名称

eg:

G:\django_learn>workon testvir
(testvir) G:\django_learn>django-admin startproject django_learn

When the execution is complete, a django project will be successfully created django_learnand the directory will be generated

--- django_learn

        ---settings.py
        ---url.py
        ---wsgi.py

--- manage.py

1. settinngs.py
   Contains the default settings for the project, including database information, debug flags, and other variables that work
2. url.py
   Responsible for mapping URL patterns to applications
3. wsgi.py
   Responsible for the launch of the project
4. manage.py
   Tools in the Django project, through which you can call the django shell and database.

3. Create an app

Order:python manage.py startapp 应用名

eg:

(testvir) G:\django_learn\django_learn>python manage.py startapp blog

(testvir) G:\django_learn\django_learn>dir

Successfully created an app named blog containing

admin.py
apps.py
migrations
models.py
tests.py
views.py
__init__.py

1. views.py
   View Action File

Fourth, use django to make the first page

1. Configure the settings.py file to import the app into it

   INSTALLED_APPS = [
   'django.contrib.admin',
   'django.contrib.auth',
   'django.contrib.contenttypes',
   'django.contrib.sessions',
   'django.contrib.messages',
   'django.contrib.staticfiles',
   'blog'  # 将blog导入settings.py
   ]

2. Configure the url.py file and set the route

   from django.conf.urls import url
   from django.contrib import admin
   from blog import views
   urlpatterns = [
   url(r'^admin/', admin.site.urls),
   url(r'^time_show/', views.time_show),
   ]

3. Configure views.py, set the view

   import time
   from django.shortcuts import HttpResponse
   # Create your views here.
   def time_show(request):
   return HttpResponse(time.asctime())

5. Start the django project
Command: python manage.py runserver
default port 8000
eg:

(testvir) G:\django_learn\django_learn>python manage.py runserver
Performing system checks...

System check identified no issues (0 silenced).

You have unapplied migrations; your app may not work properly until they are applied.
Run 'python manage.py migrate' to apply them.
May 03, 2018 - 22:54:14
Django version 1.9.8, using settings 'django_learn.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.

Enter http://127.0.0.1:8000/time_show/ in the browser to
display the following picture