Hi there,
I've some basic models like PERSON, GROUP and ROLE:
class PERSON (models.Model):
first = models.CharField ('first name', max_length=256)
last = models.CharField ('last name', max_length=256)
class GROUP (models.Model):
name = models.CharField (max_length=256)
members = models.ManyToManyField (PERSON, blank=True, null=True,
through='ROLE')
class ROLE (models.Model):
person = models.ForeignKey (PERSON)
group = models.ForeignKey (GROUP)
Now based on those three models above I'd like to create the following
models:
class ORGANIZATION (GROUP):
"""
An ORGANIZATION is a GROUP of PERSONs, and therefore I'd like to
*rename* (or at least create a 'second' name for) GROUP.members
to GROUP.people.
"""
people = GROUP.members
class COMPANY (ORGANIZATION):
class Meta:
verbose_name_plural = 'companies'
incorporation = models.CharField (max_length=16)
class EMPLOYEE (ROLE):
"""
An EMPLOYEE is a ROLE a PERSON takes without a GROUP of PERSONs,
e.g. a COMPANY. There I'd like to *rename* ROLE.group to the more
specific class' member EMPLOYEE.company.
Sine company = ROLE.group.organization.company does not work (be -
cause apparently this *casting* down the hierarchy requires an
object instance, I did the casting inside the constructor ..
"""
def __init__ (self, *args, **kwargs):
super (EMPLOYEE, self).__init__ (*args, **kwargs)
self.company = self.group.organization.company
profession = models.CharField (max_length=256)
Now, my question is: Are these approaches above somehow *correct* or
maybe
even *recommended* ? Is there a better solution? I wish there would be
something
like:
class EMPLOYEE (ROLE):
company = @rename (ROLE.group.organization.company)
profession = models.CharField (max_length=256)
where *after* the *true* renaming the original name *group* is not
available
anymore .. I read somewhere that this is not possible and it just
worms me this
imposiblity .. :.'(
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