Set Content-Length directly, Django isn't guessing it

src/documents/tests/test_api_bulk_download.py

@@ -68,7 +68,7 @@ class TestBulkDownload(DirectoriesMixin, SampleDirMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response["Content-Type"], "application/zip")
 
-        with zipfile.ZipFile(io.BytesIO(response.content)) as zipf:
+        with zipfile.ZipFile(io.BytesIO(response.getvalue())) as zipf:
             self.assertEqual(len(zipf.filelist), 2)
             self.assertIn("2021-01-01 document A.pdf", zipf.namelist())
             self.assertIn("2020-03-21 document B.jpg", zipf.namelist())
@@ -89,7 +89,7 @@ class TestBulkDownload(DirectoriesMixin, SampleDirMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response["Content-Type"], "application/zip")
 
-        with zipfile.ZipFile(io.BytesIO(response.content)) as zipf:
+        with zipfile.ZipFile(io.BytesIO(response.getvalue())) as zipf:
             self.assertEqual(len(zipf.filelist), 2)
             self.assertIn("2021-01-01 document A.pdf", zipf.namelist())
             self.assertIn("2020-03-21 document B.pdf", zipf.namelist())
@@ -110,7 +110,7 @@ class TestBulkDownload(DirectoriesMixin, SampleDirMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response["Content-Type"], "application/zip")
 
-        with zipfile.ZipFile(io.BytesIO(response.content)) as zipf:
+        with zipfile.ZipFile(io.BytesIO(response.getvalue())) as zipf:
             self.assertEqual(len(zipf.filelist), 3)
             self.assertIn("originals/2021-01-01 document A.pdf", zipf.namelist())
             self.assertIn("archive/2020-03-21 document B.pdf", zipf.namelist())
@@ -144,7 +144,7 @@ class TestBulkDownload(DirectoriesMixin, SampleDirMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response["Content-Type"], "application/zip")
 
-        with zipfile.ZipFile(io.BytesIO(response.content)) as zipf:
+        with zipfile.ZipFile(io.BytesIO(response.getvalue())) as zipf:
             self.assertEqual(len(zipf.filelist), 2)
 
             self.assertIn("2021-01-01 document A.pdf", zipf.namelist())
@@ -203,7 +203,7 @@ class TestBulkDownload(DirectoriesMixin, SampleDirMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response["Content-Type"], "application/zip")
 
-        with zipfile.ZipFile(io.BytesIO(response.content)) as zipf:
+        with zipfile.ZipFile(io.BytesIO(response.getvalue())) as zipf:
             self.assertEqual(len(zipf.filelist), 2)
             self.assertIn("a space name/Title 2 - Doc 3.jpg", zipf.namelist())
             self.assertIn("test/This is Doc 2.pdf", zipf.namelist())
@@ -249,7 +249,7 @@ class TestBulkDownload(DirectoriesMixin, SampleDirMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response["Content-Type"], "application/zip")
 
-        with zipfile.ZipFile(io.BytesIO(response.content)) as zipf:
+        with zipfile.ZipFile(io.BytesIO(response.getvalue())) as zipf:
             self.assertEqual(len(zipf.filelist), 2)
             self.assertIn("somewhere/This is Doc 2.pdf", zipf.namelist())
             self.assertIn("somewhere/Title 2 - Doc 3.pdf", zipf.namelist())
@@ -298,7 +298,7 @@ class TestBulkDownload(DirectoriesMixin, SampleDirMixin, APITestCase):
         self.assertEqual(response.status_code, status.HTTP_200_OK)
         self.assertEqual(response["Content-Type"], "application/zip")
 
-        with zipfile.ZipFile(io.BytesIO(response.content)) as zipf:
+        with zipfile.ZipFile(io.BytesIO(response.getvalue())) as zipf:
             self.assertEqual(len(zipf.filelist), 3)
             self.assertIn("originals/bill/This is Doc 2.pdf", zipf.namelist())
             self.assertIn("archive/statement/Title 2 - Doc 3.pdf", zipf.namelist())

src/documents/views.py

@@ -32,6 +32,7 @@ from django.db.models import When
 from django.db.models.functions import Length
 from django.db.models.functions import Lower
 from django.db.models.manager import Manager
+from django.http import FileResponse
 from django.http import Http404
 from django.http import HttpResponse
 from django.http import HttpResponseBadRequest
@@ -2015,10 +2016,10 @@ class BulkDownloadView(GenericAPIView):
                 return HttpResponseForbidden("Insufficient permissions")
 
         settings.SCRATCH_DIR.mkdir(parents=True, exist_ok=True)
-        temp = tempfile.NamedTemporaryFile(  # noqa: SIM115
+        temp_dir = Path(
-            dir=settings.SCRATCH_DIR,
+            tempfile.mkdtemp(
-            suffix="-compressed-archive",
+                dir=settings.SCRATCH_DIR,
-            delete=False,
+            ),
         )
 
         if content == "both":
@@ -2028,20 +2029,17 @@ class BulkDownloadView(GenericAPIView):
         else:
             strategy_class = ArchiveOnlyStrategy
 
-        with zipfile.ZipFile(temp.name, "w", compression) as zipf:
+        zip_file = temp_dir / "documents.zip"
+
+        with zipfile.ZipFile(zip_file, "w", compression) as zipf:
             strategy = strategy_class(zipf, follow_formatting=follow_filename_format)
             for document in documents:
                 strategy.add_document(document)
 
-        # TODO(stumpylog): Investigate using FileResponse here
+        response = FileResponse(zip_file.open("rb"), as_attachment=True)
-        with open(temp.name, "rb") as f:
+        response["Content-Length"] = zip_file.stat().st_size
-            response = HttpResponse(f, content_type="application/zip")
-            response["Content-Disposition"] = '{}; filename="{}"'.format(
-                "attachment",
-                "documents.zip",
-            )
 
-            return response
+        return response
 
 
 @extend_schema_view(**generate_object_with_permissions_schema(StoragePathSerializer))