回答編集履歴
1
修正
answer
CHANGED
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@@ -5,8 +5,11 @@
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5
5
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class Pet(models.Model):
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6
6
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name = models.CharField('ペットの名前', max_length=20)
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7
7
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date = models.DateTimeField('日付', auto_now=True)
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8
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-
nextdate = models.DateTimeField(
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8
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+
nextdate = models.DateTimeField(required=False)
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9
9
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def save(self, *args, **kwargs):
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10
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if self.date is None:
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11
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self.nextdate = timezone.now() + datetime.timedelta(weeks=1)
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12
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else:
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10
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-
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13
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self.nextdate = self.date + datetime.timedelta(weeks=1)
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11
14
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super().save(*args, **kwargs)
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12
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-
```
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15
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+
```
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