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47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
from __future__ import unicode_literals
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import copy
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import datetime
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from django.contrib.auth.models import User
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from django.db import models
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from django.utils.encoding import python_2_unicode_compatible
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@python_2_unicode_compatible
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class RevisionableModel(models.Model):
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base = models.ForeignKey('self', null=True)
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title = models.CharField(blank=True, max_length=255)
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when = models.DateTimeField(default=datetime.datetime.now)
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def __str__(self):
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return "%s (%s, %s)" % (self.title, self.id, self.base.id)
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def save(self, *args, **kwargs):
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super(RevisionableModel, self).save(*args, **kwargs)
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if not self.base:
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self.base = self
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kwargs.pop('force_insert', None)
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kwargs.pop('force_update', None)
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super(RevisionableModel, self).save(*args, **kwargs)
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def new_revision(self):
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new_revision = copy.copy(self)
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new_revision.pk = None
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return new_revision
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class Order(models.Model):
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created_by = models.ForeignKey(User)
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text = models.TextField()
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@python_2_unicode_compatible
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class TestObject(models.Model):
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first = models.CharField(max_length=20)
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second = models.CharField(max_length=20)
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third = models.CharField(max_length=20)
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def __str__(self):
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return 'TestObject: %s,%s,%s' % (self.first, self.second, self.third)
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