add support for Django 4.2 storages

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/storage.py

@@ -1,9 +1,22 @@
-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 import storages
+        return storages[settings.THUMBNAIL_DEFAULT_STORAGE_ALIAS]
+    except (ImportError, TypeError):
+        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 +35,4 @@ 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',