Drop Django 1.8 support

Author: codingjoe

s3file/middleware.py

@@ -2,23 +2,24 @@
 
 from django.core.files.storage import default_storage
 
-try:
-    from django.utils.deprecation import MiddlewareMixin
-except ImportError:
-    MiddlewareMixin = object
 
+class S3FileMiddleware:
+
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        file_fields = request.POST.getlist('s3file', [])
+        for field_name in file_fields:
+            paths = request.POST.getlist(field_name, [])
+            request.FILES.setlist(field_name, list(self.get_files_from_storage(paths)))
+
+        return self.get_response(request)
 
-class S3FileMiddleware(MiddlewareMixin):
     @staticmethod
     def get_files_from_storage(paths):
         """Return S3 file where the name does not include the path."""
         for path in paths:
             f = default_storage.open(path)
             f.name = os.path.basename(path)
             yield f
-
-    def process_request(self, request):
-        file_fields = request.POST.getlist('s3file', [])
-        for field_name in file_fields:
-            paths = request.POST.getlist(field_name, [])
-            request.FILES.setlist(field_name, list(self.get_files_from_storage(paths)))

tests/test_middleware.py

@@ -17,12 +17,12 @@ def test_get_files_from_storage(self):
     def test_process_request(self, rf):
         uploaded_file = SimpleUploadedFile('uploaded_file.txt', b'uploaded')
         request = rf.post('/', data={'file': uploaded_file})
-        S3FileMiddleware().process_request(request)
+        S3FileMiddleware(lambda x: None)(request)
         assert request.FILES.getlist('file')
         assert request.FILES.get('file').read() == b'uploaded'
 
         default_storage.save('s3_file.txt', ContentFile(b's3file'))
         request = rf.post('/', data={'file': 's3_file.txt', 's3file': 'file'})
-        S3FileMiddleware().process_request(request)
+        S3FileMiddleware(lambda x: None)(request)
         assert request.FILES.getlist('file')
         assert request.FILES.get('file').read() == b's3file'