CompositeField implementation for Django
Project description
CompositeField for Django Models
This is an implementation of a CompositeField for Django. Composite fields can be used to group fields together and reuse their definitions.
Example
class CoordField(CompositeField):
x = models.FloatField()
y = models.FloatField()
class Place(models.Model):
name = models.CharField(max_length=10)
coord = CoordField()
p = Place(name='Foo', coord_x=42, coord_y=0)
q = Place(name='Foo', coord=p.coord)
q.coord.y = 42How does it work?
The content of composite fields are stored inside the model, so they do not have to fiddle with any internals of the Django models. In the example above p.coord returns a proxy object that maps the fields x and y to the model fields coord_x and coord_y. The proxy object also makes it possible to assign more than one property at once.
There are some more examples in the included tests.py.
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