Lazily load the attachment_upload_to configuration setting

README.md

@@ -62,6 +62,21 @@ SETUP
 
 USAGE
 -----
+## Django models
+In `models.py`,
+
+```python
+    from django.db import models
+
+    from django_summernote.fields import SummernoteTextField
+
+    class Post(models.Model):
+        content = SummernoteTextField()
+```
+
+`SummernoteTextField` inherits all of the properties of a regular `TextField`. Using this method, the `SummernoteWidget` will automatically be used in the django admin.
+
+
 ## Django admin site
 ### Apply summernote to all TextField in model
 In `admin.py`,

django_summernote/apps.py

@@ -1,7 +1,7 @@
 from django.apps import AppConfig
 from django.conf import settings as django_settings
 from django_summernote.utils import (
-    LANG_TO_LOCALE, uploaded_filepath, get_theme_files
+    LANG_TO_LOCALE, get_theme_files
 )
 
 
@@ -29,7 +29,7 @@ def get_default_config(self):
 
             # Attachment settings
             'disable_attachment': False,
-            'attachment_upload_to': uploaded_filepath,
+            'attachment_upload_to': 'django_summernote.utils.uploaded_filepath',
             'attachment_storage_class': None,
             'attachment_filesize_limit': 1024 * 1024,
             'attachment_require_authentication': False,

django_summernote/utils.py

@@ -114,6 +114,25 @@
 }
 
 
+def get_by_qname(path, desc):
+    try:
+        dot = path.rindex('.')
+    except ValueError:
+        raise ImproperlyConfigured("%s isn't a %s module." % (path, desc))
+    module, objname = path[:dot], path[dot + 1:]
+    try:
+        mod = import_module(module)
+    except ImportError as e:
+        raise ImproperlyConfigured('Error importing %s module %s: "%s"' %
+                (desc, module, e))
+    try:
+        obj = getattr(mod, objname)
+        return obj
+    except AttributeError:
+        raise ImproperlyConfigured('%s module "%s" does not define "%s"'
+                % (desc[0].upper() + desc[1:], module, objname))
+
+
 def using_config(_func=None):
     """
     This allows a function to use Summernote configuration
@@ -204,7 +223,7 @@ def get_attachment_upload_to():
     """
     Return 'attachment_upload_to' from configuration
     """
-    return config['attachment_upload_to']
+    return get_by_qname(config['attachment_upload_to'], 'attachment_upload_to')
 
 
 @using_config