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

CASCADE [source] Cascade deletes. Django emulates the behavior of the SQL constraint ON DELETE

SET_NULL [source] Set the ForeignKey null; this is only possible if null

create(**kwargs) A convenience method for creating an object and saving it all in one step. Thus:

Field.editable If False, the field will not be displayed in the admin or any other

Options.get_field(field_name) [source] Returns the field instance given a name of a field

process_lhs(compiler, connection, lhs=None) [source] Returns a tuple (lhs_string, lhs_params)

ImageField.width_field Name of a model field which will be auto-populated with the width of the image each time the model instance

Options.label_lower New in Django 1.9. Representation

DateField.auto_now_add Automatically set the field to now when the object is first created. Useful for creation of timestamps