A django widget library for securely uploading files directly to S3 (or MinIO).
Project description
django-s3-file-field
django-s3-file-field is a Django library for uploading files directly to AWS S3 or MinIO Storage from HTTP clients (browsers, CLIs, etc.).
Benefits
django-s3-file-field makes long-running file transfers (with large files or slow connections) more efficient, as the file content is no longer proxied through the Django server. This also frees Django from needing to maintain active HTTP requests during file upload, decreasing server load and facilitating deployment to environments like Heroku, which have short, strict request timeouts.
Scope
The principal API of django-s3-file-field is the S3FileField, which is a subclass of
Django's FileField.
django-s3-file-field does not affect any operations other than uploading from external HTTP
clients; for all other file operations (downloading, uploading from the Python API, etc.), refer to
Django's file management documentation.
django-s3-file-field supports both the creation and modification (by overwrite) of
S3FileField-containing Model instances.
It supports server-rendered views, via the Forms API, with Form Field and Widget subclasses
which will automatically be used for ModelForm instances.
It also supports RESTful APIs, via Django Rest Framework's Serializer API, with a
Serializer Field subclass which will automatically be used for ModelSerializer instances.
Installation
django-s3-file-field must be used with a compatible Django Storage, which are:
S3Boto3Storagein django-storages, for AWS S3MinioStorageorMinioMediaStoragein django-minio-storage, for MinIO
After the appropriate Storage is installed and configured, install django-s3-file-field, using the corresponding extra:
pip install django-s3-file-field[boto3]
or
pip install django-s3-file-field[minio]
Enable django-s3-file-field as an installed Django app:
# settings.py
INSTALLED_APPS = [
...,
's3_file_field',
]
Add django-s3-file-field's URLconf to the root URLconf; the path prefix ('api/s3-upload/')
can be changed arbitrarily as desired:
# urls.py
from django.urls import include, path
urlpatterns = [
...,
path('api/s3-upload/', include('s3_file_field.urls')),
]
Usage
For all usage, define an S3FileField on a Django Model, instead of a FileField:
from django.db import models
from s3_file_field import S3FileField
class Resource(models.Model):
blob = S3FileField()
Django Forms
When defining a
Django ModelForm,
the appropriate Form Field will be automatically used:
from django.forms import ModelForm
from .models import Resource
class ResourceForm(ModelForm):
class Meta:
model = Resource
fields = ['blob']
Forms using django-s3-file-field include additional assets, which it's essential to render along with the Form. Typically, this can be done in any Form-containing Template as:
<head>
{# Assuming the Form is availible in context as "form" #}
{{ form.media }}
</head>
Django Rest Framework
When defining a
Django Rest Frameowrk ModelSerializer,
the appropriate Serializer Field will be automatically used:
from rest_framework import serializers
from .models import Resource
class ResourceSerializer(serializers.ModelSerializer):
class Meta:
model = Resource
fields = ['blob']
Clients interacting with these RESTful APIs will need to use a corresponding django-s3-file-field client library. Client libraries (and associated documentation) are available for:
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