mirror of https://github.com/django/django.git
41 lines
1.0 KiB
Python
41 lines
1.0 KiB
Python
"""
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22. Using properties on models
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Use properties on models just like on any other Python object.
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"""
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from django.db import models
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class Person(models.Model):
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first_name = models.CharField(maxlength=30)
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last_name = models.CharField(maxlength=30)
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def _get_full_name(self):
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return "%s %s" % (self.first_name, self.last_name)
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def _set_full_name(self, combined_name):
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self.first_name, self.last_name = combined_name.split(' ', 1)
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full_name = property(_get_full_name)
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full_name_2 = property(_get_full_name, _set_full_name)
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__test__ = {'API_TESTS':"""
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>>> a = Person(first_name='John', last_name='Lennon')
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>>> a.save()
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>>> a.full_name
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'John Lennon'
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# The "full_name" property hasn't provided a "set" method.
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>>> a.full_name = 'Paul McCartney'
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Traceback (most recent call last):
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...
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AttributeError: can't set attribute
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# But "full_name_2" has, and it can be used to initialise the class.
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>>> a2 = Person(full_name_2 = 'Paul McCartney')
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>>> a2.save()
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>>> a2.first_name
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'Paul'
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"""}
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