Hi,
I was trying to create an m2m relationship using the 'through' parameter
because
I want to have an additional field in the relation table. The idea was to
render this
using CheckboxSelectMultiple.
The thing is that when I add the model m2m field to the 'fieldset' field at
the
ModelForm it throws an exception :
'HomeAdmin.fieldsets[4][1]['fields']' can't include the ManyToManyField
field 'attributes' because 'attributes' manually specifies a 'through'
model.
Apparently this is a BUG pointed out here :
https://groups.google.com/forum/?fromgroups#!topic/django-users/nWpb0...
Basically if you use the 'through' parameter to use a relation table that
contains an extra field/s
you can't render it using a CheckboxSelectMultple widget, not even if the
extra field allows null
values.
I thought of fixing it this way (a nasty hack) :
class A(models.Model):
.
.
foos = models.ManyToManyField('Foo')
class Foo(models.Model):
name = CharField
And here comes the nasssty
class FooRelationshipValue(models.Model):
a = ForeingKey(A)
foo = ForeingKey(Foo)
value = DateField
Here I can store the value for the relationship when saving the Model in
the DB.
If anyone has a better solution, suggestion, comment or thinks this is
going
to make me rot in hell please let me know.
Thanks.
--
Nicolas Emiliani
Lo unico instantaneo en la vida es el cafe, y es bien feo.
