add support for Django 4.2 storages (Django 5.1 support)

.github/workflows/python.yml

@@ -13,7 +13,7 @@ jobs:
     strategy:
       max-parallel: 4
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
 
     steps:
     - uses: actions/checkout@v2

easy_thumbnails/conf.py

@@ -100,8 +100,15 @@ class Settings(AppSettings):
     THUMBNAIL_DEFAULT_STORAGE = (
         'easy_thumbnails.storage.ThumbnailFileSystemStorage')
     """
+    (DEPRECATED)
     The default Django storage for *saving* generated thumbnails.
     """
+
+    THUMBNAIL_DEFAULT_STORAGE_ALIAS = 'easy_thumbnails'
+    """
+    Django 4.2+: The default Django storage name for *saving* generated thumbnails.
+    """
+
     THUMBNAIL_MEDIA_ROOT = ''
     """
     Used by easy-thumbnail's default storage to locate where thumbnails are

easy_thumbnails/management/commands/thumbnail_cleanup.py

@@ -3,12 +3,12 @@
 import time
 from datetime import date
 
-from django.core.files.storage import get_storage_class
 from django.core.management.base import BaseCommand
 from django.utils.timezone import datetime, timedelta
 
 from easy_thumbnails.conf import settings
 from easy_thumbnails.models import Source
+from easy_thumbnails.storage import get_storage
 
 
 class ThumbnailCollectionCleaner:
@@ -52,7 +52,7 @@ def clean_up(self, dry_run=False, verbosity=1, last_n_days=0,
             self.stdout.write("Dry run...")
 
         if not storage:
-            storage = get_storage_class(settings.THUMBNAIL_DEFAULT_STORAGE)()
+            storage = get_storage()
 
         sources_to_delete = []
         time_start = time.time()

easy_thumbnails/storage.py

@@ -1,9 +1,27 @@
-from django.core.files.storage import FileSystemStorage, get_storage_class
+from django.core.files.storage import FileSystemStorage
 from django.utils.deconstruct import deconstructible
 from django.utils.functional import LazyObject
 
 from easy_thumbnails.conf import settings
 
+def get_storage():
+    # If the user has specified a custom storage backend, use it.
+    try:
+        from django.core.files.storage.handler import InvalidStorageError
+        from django.core.files.storage import storages
+        try:
+            return storages[settings.THUMBNAIL_DEFAULT_STORAGE_ALIAS]
+        except (InvalidStorageError):
+            pass
+    except (ImportError, TypeError):
+        pass
+    from django.core.files.storage import get_storage_class
+    storage_class = get_storage_class(settings.THUMBNAIL_DEFAULT_STORAGE)
+    class ThumbnailDefaultStorage(LazyObject):
+        def _setup(self):
+            self._wrapped = storage_class()
+    return ThumbnailDefaultStorage()
+
 
 @deconstructible
 class ThumbnailFileSystemStorage(FileSystemStorage):
@@ -22,10 +40,4 @@ def __init__(self, location=None, base_url=None, *args, **kwargs):
         super().__init__(location, base_url, *args, **kwargs)
 
 
-class ThumbnailDefaultStorage(LazyObject):
-    def _setup(self):
-        self._wrapped = get_storage_class(
-            settings.THUMBNAIL_DEFAULT_STORAGE)()
-
-
-thumbnail_default_storage = ThumbnailDefaultStorage()
+thumbnail_default_storage = get_storage()

easy_thumbnails/tests/settings.py

@@ -28,6 +28,16 @@
     'easy_thumbnails.tests.apps.EasyThumbnailsTestConfig',
 ]
 
+
+STORAGES = {
+    "easy_thumbnails": {
+        "BACKEND": "django.core.files.storage.FileSystemStorage",
+    },
+    "default": {
+        "BACKEND": "django.core.files.storage.FileSystemStorage",
+    },
+}
+
 TEMPLATES = [
     {
         'BACKEND': 'django.template.backends.django.DjangoTemplates',

tox.ini

@@ -1,16 +1,23 @@
 [tox]
 distribute = False
 envlist =
-    py{37,38,39}-django{22,30,31,32}{-svg,}
-    py310-django{32,40,41}{-svg,}
+    py{36,37,38,39,310}-django32{-svg,}
+    py{38,39,310,311}-django40{-svg,}
+    py{38,39,310,311}-django41{-svg,}
+    py{38,39,310,311,312}-django42{-svg,}
+    py{310,311,312}-django50{-svg,}
+    py{310,311,312}-django51{-svg,}
 skip_missing_interpreters = True
 
 [gh-actions]
 python =
+    3.6: py36
     3.7: py37
     3.8: py38
     3.9: py39
     3.10: py310
+    3.11: py311
+    3.12: py312
 
 [testenv]
 setenv =
@@ -19,14 +26,15 @@ usedevelop = True
 extras =
     svg: svg
 deps =
-    django22: Django<2.3
-    django30: Django<3.1
-    django31: Django<3.2
     django32: Django<3.3
     django40: Django<4.1
     django41: Django<4.2
+    django42: Django<4.3
+    django50: Django<5.1
+    django51: Django>=5.1a1,<5.2
     testfixtures
 commands =
     python -Wd {envbindir}/django-admin test {posargs}
 ignore_outcome =
     djangomain: true
+