Field.unique If True, this field must be unique throughout the table. This is enforced

Field.validators A list of validators to run for this field. See the validators documentation for more

SlugField.allow_unicode New in Django 1.9. If

FieldFile.open(mode='rb') [source] Opens or reopens the file associated with this instance

ForeignKey.to_field The field on the related object that the relation is to. By default, Django uses the primary key of the

SET_DEFAULT [source] Set the ForeignKey to its default value; a default for

DateField.auto_now Automatically set the field to now every time the object is saved. Useful for “last-modified” timestamps

class AutoField(**options) [source] An IntegerField that automatically increments

ManyToManyField.related_query_name Same as ForeignKey.related_query_name.