Fixed #27067 -- Deprecated string_concat() in favor of format_lazy().

1 files changed, 6 insertions, 0 deletions

diff --git a/django/utils/translation/__init__.py b/django/utils/translation/__init__.py
index c42182d96d..9154ceeb7b 100644
--- a/django/utils/translation/__init__.py
+++ b/django/utils/translation/__init__.py
@@ -4,9 +4,11 @@ Internationalization support.
 from __future__ import unicode_literals
 
 import re
+import warnings
 
 from django.utils import six
 from django.utils.decorators import ContextDecorator
+from django.utils.deprecation import RemovedInDjango21Warning
 from django.utils.encoding import force_text
 from django.utils.functional import lazy
 
@@ -224,6 +226,10 @@ def _string_concat(*strings):
     Lazy variant of string concatenation, needed for translations that are
     constructed from multiple parts.
     """
+    warnings.warn(
+        'django.utils.translate.string_concat() is deprecated in '
+        'favor of django.utils.text.format_lazy().',
+        RemovedInDjango21Warning, stacklevel=2)
     return ''.join(force_text(s) for s in strings)
 string_concat = lazy(_string_concat, six.text_type)