db.models.Field.unique

Field.unique

If True, this field must be unique throughout the table.

This is enforced at the database level and by model validation. If you try to save a model with a duplicate value in a unique field, a django.db.IntegrityError will be raised by the model’s save() method.

This option is valid on all field types except ManyToManyField, OneToOneField, and FileField.

Note that when unique is True, you don’t need to specify db_index, because unique implies the creation of an index.

Links:

https://docs.djangoproject.com/en/1.10/ref/models/fields/#django.db.models.Field.unique

doc_Django

2016-10-09 18:35:30

Comments

Popular Articles

db.models.Field.unique_for_month Field.unique_for_month Like unique_for_date, but requires the field to be unique with respect to the month.

db.models.Field.unique_for_date Field.unique_for_date Set this to the name of a DateField or DateTimeField to require that this field be unique for the value of the date field. F

db.models.Field.unique_for_year Field.unique_for_year Like unique_for_date and unique_for_month.

db.models.Field class Field [source] Field is an abstract class that represents a database table column. Django uses fields to create the database table (db_type(

db.models.Field.model Field.model Returns the model on which the field is defined. If a field is defined on a superclass of a model, model will refer to the superclass,