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19 lines
641 B
Python
19 lines
641 B
Python
from django.db import models
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MAX_INSTANCES = 10
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class MyModel(models.Model):
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foo = models.BooleanField()
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bar = models.IntegerField(help_text='Must be an integer.')
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baz = models.CharField(max_length=32, help_text='Free text. Max length 32 chars.')
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created = models.DateTimeField(auto_now_add=True)
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def save(self, *args, **kwargs):
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"""
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For the purposes of the sandbox limit the maximum number of stored models.
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"""
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super(MyModel, self).save(*args, **kwargs)
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while MyModel.objects.all().count() > MAX_INSTANCES:
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MyModel.objects.all().order_by('-created')[0].delete()
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