Field.help_text Extra “help” text to be displayed with the form widget. It’s useful for documentation even if your field isn’t

Model.delete(using=DEFAULT_DB_ALIAS, keep_parents=False) [source] Issues an SQL DELETE

ForeignKey.swappable Controls the migration framework’s reaction if this ForeignKey is pointing at a swappable

description A verbose description of the field, e.g. for the django.contrib.admindocs application.

class BigIntegerField(**options) [source] A 64-bit integer, much like an IntegerField

sample By default, Variance returns the population variance. However, if sample=True, the return value

prefetch_related(*lookups) Returns a QuerySet that will automatically retrieve, in a single batch, related objects

class Q [source] A Q() object, like an

Options.unique_together Sets of field names that, taken together, must be unique:

ForeignKey.related_query_name The name to use for the reverse filter name from the target model. It defaults to the value of