30 lines
764 B
Python
30 lines
764 B
Python
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from __future__ import unicode_literals
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from django.utils.encoding import python_2_unicode_compatible
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"""
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Model for testing arithmetic expressions.
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"""
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from django.db import models
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@python_2_unicode_compatible
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class Number(models.Model):
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integer = models.IntegerField(db_column='the_integer')
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float = models.FloatField(null=True, db_column='the_float')
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def __str__(self):
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return '%i, %.3f' % (self.integer, self.float)
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class Experiment(models.Model):
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name = models.CharField(max_length=24)
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assigned = models.DateField()
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completed = models.DateField()
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start = models.DateTimeField()
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end = models.DateTimeField()
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class Meta:
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ordering = ('name',)
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def duration(self):
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return self.end - self.start
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