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django

load environment​

# load environment
import os
envs = os.environ
for k, v in envs.items():
    print(k, v)

# load .env
# pip install django-environ

import environ
import os

env = environ.Env(
    # set casting, default value
    DEBUG=(bool, False)
)

# Set the project base directory
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

# Take environment variables from .env file
environ.Env.read_env(os.path.join(BASE_DIR, '.env'))

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = env("DEBUG", default=True)

from django.core.management.utils import get_random_secret_key
SECRET_KEY = env("SECRET_KEY", default=get_random_secret_key())

# database url https://pypi.org/project/dj-database-url/
# pip install dj_database_url

import dj_database_url
# write .env and set DATABASE_URL
DATABASES = {
    "default": dj_database_url.config(
        default=env("DATABASE_URL", default="sqlite:///db.sqlite3"), conn_max_age=600, conn_health_checks=True
    )
}

auto load app​

# mkdir -p apps/appname
# django-admin startapp appname apps/appname
# update apps/appname/apps.py
name = "apps.appname"

# settings.py
APPS_FLODER = os.path.join(BASE_DIR, "apps")
APPS = [_ for _ in os.listdir(APPS_FLODER) if os.path.isdir(os.path.join(APPS_FLODER, _)) and "pycache" not in _]
INSTALLED_APPS += ["apps." + _ for _ in APPS]

cors​

# pip install django-cors-headers

INSTALLED_APPS = (
    ...
    'corsheaders',
    ...
)

MIDDLEWARE = [
    ...
    'corsheaders.middleware.CorsMiddleware',
    'django.middleware.common.CommonMiddleware',
    ...
]

CORS_ALLOW_ALL_ORIGINS=True

# Load the default ones
CORS_ALLOWED_ORIGINS = ["http://localhost:3000", "http://127.0.0.1:3000"]

static in debug mode​

python manage.py runserver 0.0.0.0:8000 --insecure

dump and load data​

python manage.py dumpdata (myapp) > myapp.json

python manage.py loaddata myapp.json

save data with scripts​

import os
import django
from proxyip.models import ProxyIP

os.environ['DJANGO_SETTINGS_MODULE'] = 'dj_project.settings'
django.setup()

p = ProxyIP(ip='192.168.50.1')
p.save()
print(ProxyIP.objects.all())

python manage.py shell < main.py

download drf_yasg yaml​

# setting.py
SWAGGER_SETTINGS = {
	'DEFAULT_INFO': '$server.urls.openapi_info'
}

# urls.py

openapi_info = openapi.Info(
    title="Snippets API",
    default_version="v1",
    description="Test description",
    terms_of_service="https://www.google.com/policies/terms/",
    contact=openapi.Contact(email="contact@snippets.local"),
    license=openapi.License(name="BSD License"),
)
schema_view = get_schema_view(
    openapi_info,
    public=True,
    permission_classes=(permissions.AllowAny,),
)

python manage.py generate_swagger swagger.yaml or swagger.json