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19 lines
307 B
Python
19 lines
307 B
Python
# coding=utf-8
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from django.db import models
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from account.models import User
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class AbstractProblem(models.Model):
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class Meta:
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abstract = True
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class Problem(AbstractProblem):
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pass
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class Solution(models.Model):
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user = models.ForeignKey(User)
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problem = models.ForeignKey(Problem) |