- Author:
- rubic
- Posted:
- March 5, 2007
- Language:
- Python
- Version:
- Pre .96
- Tags:
- property model
- Score:
- 3 (after 3 ratings)
After reading the comment to my snippet #49 it occurs to me that Python properties may not be obvious to everyone, and may be underutilized in Django models.
Here is a simple example demonstrating a property to format a Person's name.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | from django.db import models
class Person(models.Model):
"""Demonstrate model attribute with a Python property
>>> p = Person(firstName='Jeff', lastName='Bauer')
>>> p.name
'Bauer, Jeff'
>>>
"""
firstName = models.CharField(maxlength=20)
lastName = models.CharField(maxlength=20)
middleName = models.CharField(maxlength=20, blank=True)
def _name(self):
if self.middleName:
return "%s, %s %s." % (self.lastName,
self.firstName,
self.middleName[:1])
else:
return "%s, %s" % (self.lastName, self.firstName)
name = property(_name)
|
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Comments
I've been meaning to submit a patch to add a property on the built-in
User
model for getting/setting the full name (there's aget_full_name
method on it right now, and IIRC it's not a property because pre-magic-removal Django had issues with properties on model classes); it'd be nice to have an example of that in Django itself to point to :)#
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