Hi,
I'm starting off with Django and trying my first (toy) project. It's a
Kris Kindle application (called "Secret Santa"? by some). Not exactly
earth-shattering, but I want to start with something small.
I'm unsure what approach to use when designing my model.
The entities I am dealing with are Family, Adult and Kinder.
Normally for a standalone application (using Java or Python), I would
design a class Family, with fields/attributes representing arrays/
lists of objects of the classes Adult and Kinder.
(Apologies if my OOP terminology is mixed-up - I'm originally a C/Perl
programmer!)
I've started my Django design that way:
class Adult(models.Model):
name = models.CharField(maxlength=30)
partner = models.CharField(maxlength=30)
kriskindle = models.CharField(maxlength=30)
email = models.EmailField()
def __str__(self):
return self.name
class Admin:
#list_display('name', 'partner', 'email')
pass
class Kinder(models.Model):
name = models.CharField(maxlength=30)
excluded = models.ManyToManyField(Adult)
kriskindle = models.CharField(maxlength=30)
def __str__(self):
return self.name
class Admin:
#list_display('name', 'excluded')
pass
class Family(models.Model):
name = models.CharField(maxlength=30)
children = models.ManyToManyField(Kinder)
adults = models.ManyToManyField(Adult)
def __str__(self):
return self.name
class Admin:
pass
On the other hand, for any previous Web development I've done (with
PHP or Perl), I would have define just 2 entities, Adult and Kinder,
and simply included family as a string attribute of each.
class Adult(models.Model):
name = models.CharField(maxlength=30)
partner = models.CharField(maxlength=30)
kriskindle = models.CharField(maxlength=30)
email = models.EmailField()
family = models.CharField(maxlength=30)
def __str__(self):
return self.name
class Admin:
#list_display('name', 'partner', 'email')
pass
class Kinder(models.Model):
name = models.CharField(maxlength=30)
excluded = models.ManyToManyField(Adult)
kriskindle = models.CharField(maxlength=30)
family = models.CharField(maxlength=30)
def __str__(self):
return self.name
class Admin:
#list_display('name', 'excluded')
pass
I actually think the former would be easier to program, e.g. in terms
of getting access to the lists of adults directly from the database,
instead of having to retrieve it from a Family object first.
Which of these would be the more appropriate way to do it in Django?
Thanks in advance for taking the time to respond.
Kind regards,
Cormac.
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