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#1 March 26, 2008 16:57:33

Registered: 2009-11-02
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Need advice on design of models

I'm creating an election site and I have created the following 4 main

class Election(models.Model):
election_name = models.CharField(max_length=100, unique=True)
slug = models.SlugField(prepopulate_from=("election_name",),
election_date = models.DateField()

class Precinct(models.Model):
precinct_number = models.CharField(max_length=4, blank=True)
precinct_name = models.CharField(max_length=100)
slug =
location = models.CharField(max_length=100)
address = models.CharField(max_length=100)

class Candidate(models.Model):
first_name = models.CharField(max_length=50)
middle_name = models.CharField(max_length=50)
last_name = models.CharField(max_length=50)
display_name = models.CharField(max_length=75)
slug = models.SlugField(prepopulate_from=("display_name",),

class Office(models.Model):
office_name = models.CharField(max_length=100, unique=True)
slug = models.SlugField(prepopulate_from=("office_name",),)

Since my mind is still functioning like a DBA, I'm unsure as to what
kind of classes to create for the following:

Election <-> Precinct
This is many to many but an additional field needs to be included
(total_persons_voting). I guess this would be a separate class
because of this extra field?

Election <-> Precinct <-> Office
I believe this would be a many to many relationship between (Election,
Precinct) and Office since in any election, different precincts may
contain different offices.

Election <-> Precinct <-> Office <-> Candidate
Once again, this would be a many to many relationship between
(Election, Precinct, Office) and Candidate with an additional field
for total_votes

Or would it be simpler (or correct) to create the following class:
class Results(models.Model):
election = models.ForeignKey(election)
precinct = models.ForeignKey(precinct)
office = models.ForeignKey(office)
candidate = models.ForeignKey(candidate)
total_votes = models.PositiveIntegerField()
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