Django framework

                 Django                   

Installation (install the latest LTS version):

 

pip3 install django==1.11.9

 

Create a django project:

The following command creates a Django project named "mysite":

django-admin startproject mysite

Catalog introduction:

mysite/ 
├── manage.py #Management   files └── 
mysite   #Project directory 
    ├── __init__ .py
    ├── settings.py   # Configuration├── 
    urls.py #Routing   -- > Correspondence between URLs and functions 
    └── wsgi.py   # The runserver command uses the wsgiref module as a simple web server

Run the Django project:

python manage.py runserver 127.0.0.1:8000

Template file configuration:

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, "template")],  # template文件夹位置
        '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',
            ],
        },
    },
]
copy code

Static file configuration:

STATIC_URL = ' /static/ '   # Static folder prefix used in HTML 
STATICFILES_DIRS = [
    os.path.join(BASE_DIR, " static " ),   #Static file storage location 
]

Do not understand? There are pictures and facts:

 

                  Django's basic three-piece set:                    

from django.shortcuts import HttpResponse, render, redirect

 

HttpResponse

Internally, a string parameter is passed in and returned to the browser.

E.g:

def index(request):
     #Business logic code 
    return HttpResponse( " OK " )

redirect

Accepts a URL parameter, which means to jump to the specified URL.

E.g:

def index(request):
    # business logic code
    return redirect("/home/")

What's up with the redirect?

 

Start Django and report an error:

Django starts with an error UnicodeEncodeError...

This error is usually reported because the computer name is Chinese. Change the computer name to English and restart the computer.