get_internal_type() [source] Returns a string naming this field for backend specific purposes

Model.refresh_from_db(using=None, fields=None) [source] If you need to reload a model’s values

desc() Returns the expression ready to be sorted in descending order.

value_to_string(obj) [source] Converts obj to a string. Used to serialize the

Field.db_index If True, a database index will be created for this field.

class NullBooleanField(**options) [source] Like a BooleanField, but allows NULL

class DurationField(**options) [source] A field for storing periods of time - modeled in

class DecimalField(max_digits=None, decimal_places=None, **options) [source] A fixed-precision

ManyToManyField.db_constraint Controls whether or not constraints should be created in the database for the foreign keys in

db_type(connection) [source] Returns the database column data type for the Field