django Cheat Sheet

pip install django

django-admin startproject <projectname>
python manage.py runserver

python manage.py startapp <appname>

# <projectname>/<appname>/views.py
from django.http import HttpResponse
def index(request):
    return HttpResponse("Hello world")

# <projectname>/<appname>/urls.py
from django.urls import path
from . import views
urlpatterns = [ path('app', views.index, name='index'), ]

# <projectname>/urls.py 
from django.urls import include, path
urlpatterns = [ 
    path('app/', include('app.urls'), 
    path('admin/', admin.site.urls),
 ]

python manage.py migrate

from django.db import models

class A(models.Model): 
    name = models.charField(max_length=200)
    age = models.IntegerField(default=0)
    birthday = models.DateTimeField('birthday)' 

class B(models.Model):
    a = models.ForeignKey(A, on_delete=models.CASCADE)
    height = models.IntegerField(default=0) 

# <projectname>/settings.py
...
INSTALLED_APPS = [ 
    'appName.apps.AppNameConfig', 
    'django.contrib.admin', 
...
]

python manage.py makemigrations <appname>

python manage.py sqlmigrate <appname> 0001

python manage.py check

python manage.py shell

python manage.py createsuperuse

# enter username and password for admin user

# <projectname>/<appname>/admin.py

from django.contrib import admin
from .models import A

admin.site.register(A)