diff options
| -rw-r--r-- | django/db/backends/mysql/validation.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/django/db/backends/mysql/validation.py b/django/db/backends/mysql/validation.py index cd7503a352..49c88377b7 100644 --- a/django/db/backends/mysql/validation.py +++ b/django/db/backends/mysql/validation.py @@ -17,7 +17,8 @@ class DatabaseValidation(BaseDatabaseValidation): if getattr(field, 'rel', None) is None: field_type = field.db_type(connection) - if (field_type.startswith('varchar') # Look for CharFields... + if (field_type is not None # Not all fields have a db_type (whyever...) + and field_type.startswith('varchar') # Look for CharFields... and field.unique # ... that are unique and (field.max_length is None or int(field.max_length) > 255)): errors.append( |