Fixed #31144 -- Relaxed system check for max_length of CharFields on MySQL/MariaDB by turning into a warning.

1 files changed, 7 insertions, 3 deletions

diff --git a/django/db/backends/mysql/validation.py b/django/db/backends/mysql/validation.py
index fc4dc500e1..41e600a856 100644
--- a/django/db/backends/mysql/validation.py
+++ b/django/db/backends/mysql/validation.py
@@ -41,11 +41,15 @@ class DatabaseValidation(BaseDatabaseValidation):
         if (field_type.startswith('varchar') and field.unique and
                 (field.max_length is None or int(field.max_length) > 255)):
             errors.append(
-                checks.Error(
-                    '%s does not allow unique CharFields to have a max_length '
+                checks.Warning(
+                    '%s may not allow unique CharFields to have a max_length '
                     '> 255.' % self.connection.display_name,
                     obj=field,
-                    id='mysql.E001',
+                    hint=(
+                        'See: https://docs.djangoproject.com/en/%s/ref/'
+                        'databases/#mysql-character-fields' % get_docs_version()
+                    ),
+                    id='mysql.W003',
                 )
             )