*Episode 28* PYTHON (Using Amazon AWS to Serve Files in Django)

 

Using Amazon AWS to serve files

This episode covers :-

 1) How to serve static assets and user-uploaded files from an Amazon bucket.

• Setup :-

    Use the project from the “Heroku Deployment” chapter to test this.

 

• Creating an Amazon AWS bucket :-

    Visit https://samuli.to/AWS and create an account.

    Visit https://samuli.to/S3 and add a bucket:

     Click Next for the rest of the settings and hit Create bucket.

• Setting up permissions :-

    Visit Services and click IAM under the Security, Identity & Compliance label:

    Click Users and Add user:

     Check Programmatic access:

     Create a new group:

     Check AmazonS3FullAccess:

      Click Next: Tags:

      Click Next: Review:

      Click Create user:

      We will use this information in the settings.py file:

• Updating settings.py file :-

    Update settings.py file and add the configuration:

mysite/settings.py

django_heroku.settings(locals())

AWS_ACCESS_KEY_ID = 'ACCESS_KEY'

AWS_SECRET_ACCESS_KEY = 'SECRET'

AWS_STORAGE_BUCKET_NAME = 'sn-test-01'

AWS_DEFAULT_ACL = None

AWS_LOCATION = 'static'

AWS_MEDIA_LOCATION = 'media'

STATIC_URL = 'https://%s.s3.amazonaws.com/%s/' % (AWS_STORA\

GE_BUCKET_NAME, AWS_LOCATION)

STATICFILES_STORAGE = 'storages.backends.s3boto3.S3Boto3Sto\

rage'

DEFAULT_FILE_STORAGE = 'mysite.storages.MediaStorage'

try:

from .local_settings import *

except ImportError:

pass

     Create a storages.py file and fill it with these lines:

mysite/storages.py

from django.conf import settings

from storages.backends.s3boto3 import S3Boto3Storage

class MediaStorage(S3Boto3Storage):

location = settings.AWS_MEDIA_LOCATION

file_overwrite = False

•  Adding an image field to the Post model :-

     Edit blog app models.py file and add an ImageField:

blog/models.py

from django.db import models

class Post(models.Model):

title = models.CharField(max_length=255, default='')

image = models.ImageField(default='', blank=True, uploa\

d_to='images') # < here

•  Installing packages :-

     Install packages and push:

Terminal

pip install django-storages boto3 pillow

python manage.py makemigrations

python manage.py migrate

pip freeze > requirements.txt

git add .

git commit -m "Add django-storages, boto3, pillow and Post \

model image field"

git push heroku master

heroku run python manage.py migrate

      Visit the production site in https://YOUR_APP.herokuapp.com/ and create a Post with an image.

     The post image will be now served from an URL like this: sn-test-

01.amazonaws.com/media/images/Agapanthus.png

     Open the page source code and you will see that the static files are now served from URLS like this: sn-test-01.s3.amazonaws.com/static/admin/css/base.css

     In the bucket folder you now have separate folders for media and static files:

Summary :-

• Boto3 is an Amazon software development kit that allows Python programs to use services like Amazon S3.
• It’s not uncommon to serve static assets and user-uploaded files from external sources.
• Amazon S3 can also be integrated with a content delivery network like Amazon CloudFront https://samuli.to/Amazon-CloudFront.

👈Episode 27(P).                                                                           Episode 29(P)👉

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