Fixed #27829 -- Deprecated settings.DEFAULT_CONTENT_TYPE.

1 files changed, 7 insertions, 0 deletions

diff --git a/django/conf/__init__.py b/django/conf/__init__.py
index 2f2cec6f84..1d90d6fc0a 100644
--- a/django/conf/__init__.py
+++ b/django/conf/__init__.py
@@ -9,9 +9,11 @@ a list of all possible variables.
 import importlib
 import os
 import time
+import warnings
 
 from django.conf import global_settings
 from django.core.exceptions import ImproperlyConfigured
+from django.utils.deprecation import RemovedInDjango30Warning
 from django.utils.functional import LazyObject, empty
 
 ENVIRONMENT_VARIABLE = "DJANGO_SETTINGS_MODULE"
@@ -128,6 +130,9 @@ class Settings:
         if not self.SECRET_KEY:
             raise ImproperlyConfigured("The SECRET_KEY setting must not be empty.")
 
+        if self.is_overridden('DEFAULT_CONTENT_TYPE'):
+            warnings.warn('The DEFAULT_CONTENT_TYPE setting is deprecated.', RemovedInDjango30Warning)
+
         if hasattr(time, 'tzset') and self.TIME_ZONE:
             # When we can, attempt to validate the timezone. If we can't find
             # this file, no check happens and it's harmless.
@@ -173,6 +178,8 @@ class UserSettingsHolder:
 
     def __setattr__(self, name, value):
         self._deleted.discard(name)
+        if name == 'DEFAULT_CONTENT_TYPE':
+            warnings.warn('The DEFAULT_CONTENT_TYPE setting is deprecated.', RemovedInDjango30Warning)
         super().__setattr__(name, value)
 
     def __delattr__(self, name):