add DJANGO_MAILBOX_ATTACHMENT_UPLOAD_TO setting

django_mailbox/models.py

@@ -71,6 +71,12 @@ ATTACHMENT_INTERPOLATION_HEADER = getattr(
     'X-Django-Mailbox-Interpolate-Attachment'
 )
 
+ATTACHMENT_UPLOAD_TO = getattr(
+    settings,
+    'DJANGO_MAILBOX_ATTACHMENT_UPLOAD_TO',
+    'mailbox_attachments/%Y/%m/%d/'
+)
+
 STORE_ORIGINAL_MESSAGE = getattr(
     settings,
     'DJANGO_MAILBOX_STORE_ORIGINAL_MESSAGE',
@@ -717,7 +723,7 @@ class MessageAttachment(models.Model):
 
     document = models.FileField(
         _(u'Document'),
-        upload_to='mailbox_attachments/%Y/%m/%d/'
+        upload_to=ATTACHMENT_UPLOAD_TO,
     )
 
     def delete(self, *args, **kwargs):

django_mailbox/tests/__init__.py

@@ -3,3 +3,4 @@ from .test_message_flattening import *
 from .test_process_email import *
 from .test_transports import *
 from .test_integration_imap import *
+from .test_settings import *

django_mailbox/tests/test_settings.py

@@ -0,0 +1,10 @@
+from django.test import TestCase
+from django.conf import settings
+from django_mailbox.models import ATTACHMENT_UPLOAD_TO
+
+
+class TestSettings(TestCase):
+    def test_default_attachment_upload_to(self):
+        user_setting = getattr(settings, 'DJANGO_MAILBOX_ATTACHMENT_UPLOAD_TO', False)
+        self.assertFalse(user_setting)
+        self.assertEqual(ATTACHMENT_UPLOAD_TO, 'mailbox_attachments/%Y/%m/%d/')

docs/topics/appendix/settings.rst

@@ -12,7 +12,7 @@ Settings
 
   * Default: ``False``
   * Type: ``boolean``
-  * Controls whether or not we remove mimetypes not specified in 
+  * Controls whether or not we remove mimetypes not specified in
     ``DJANGO_MAILBOX_PRESERVED_MIMETYPES`` from the message prior to storage.
 
 * ``DJANGO_MAILBOX_ALLOWED_MIMETYPES``
@@ -59,6 +59,14 @@ Settings
     this field is the primary key of the ``django_mailbox.MessageAttachment``
     instance currently storing this payload component's contents.
 
+* ``DJANGO_MAILBOX_ATTACHMENT_UPLOAD_TO``
+
+  * Default: ``mailbox_attachments/%Y/%m/%d/``
+  * Type: ``string``
+  * Attachments will be saved to this location. Specifies the ``upload_to`` setting
+    for the attachment FileField. For more on FileFields and upload_to, see the
+    `Django docs <https://docs.djangoproject.com/en/dev/topics/http/file-uploads/#handling-uploaded-files-with-a-model>`__
+
 * ``DJANGO_MAILBOX_MAX_MESSAGE_SIZE``
 
   * Default: ``False``