Field.null If True, Django will store empty values as NULL in the database. Default is False

ImageField.height_field Name of a model field which will be auto-populated with the height of the image each time the model

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

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

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

SET() [source] Set the ForeignKey to the value passed to SET()

class FilePathField(path=None, match=None, recursive=False, max_length=100, **options) [source] A

FieldFile.save(name, content, save=True) [source] This method takes a filename and file contents

FieldFile.name The name of the file including the relative path from the root of the

Field.is_relation Boolean flag that indicates if a field contains references to one or more other models for its functionality