updateOrCreateFromFields is made to call updateOrCreateFromKeyName.
updateOrCreateFromFields called self._model.get_or_insert which only creates
new entities but doesn't update the properties if the entity already exists.
So updateOrCreateFromFields is now made to call updateOrCreateFromKeyName
which actually updates the entity properties if entity already exists.
Reviewed by: Lennard de Rijk
from django.db.backends import BaseDatabaseValidation
class DatabaseValidation(BaseDatabaseValidation):
def validate_field(self, errors, opts, f):
"Prior to MySQL 5.0.3, character fields could not exceed 255 characters"
from django.db import models
from django.db import connection
db_version = connection.get_server_version()
if db_version < (5, 0, 3) and isinstance(f, (models.CharField, models.CommaSeparatedIntegerField, models.SlugField)) and f.max_length > 255:
errors.add(opts,
'"%s": %s cannot have a "max_length" greater than 255 when you are using a version of MySQL prior to 5.0.3 (you are using %s).' %
(f.name, f.__class__.__name__, '.'.join([str(n) for n in db_version[:3]])))