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django.db.utils.IntegrityError:表“Event_event”中主鍵為“1”的行具有無效的外鍵:

[英]django.db.utils.IntegrityError: The row in table 'Event_event' with primary key '1' has an invalid foreign key:

我的事件 Model

class Event(models.Model):
    name = models.CharField(max_length=100)
    start_date = models.DateField()
    end_date = models.DateField()
    TIMEZONES = tuple(zip(pytz.all_timezones, pytz.all_timezones))
    timezone = models.CharField(max_length=32, choices=TIMEZONES)
    session=models.ForeignKey(Session,on_delete=models.CASCADE)
    slug = models.SlugField(unique=True, editable=False, max_length=100)

和我的 session model

class Session(models.Model):
    name=models.CharField(max_length=100)
    start_date=models.DateField()
    end_date=models.DateField()
    speaker=models.CharField(max_length=100)
    slug = models.SlugField(unique=True, editable=False, max_length=100)

創建測試時出現錯誤。 session部分應該怎么做? 這是我的測試代碼

class CreateTest(APITestCase):
    def test_create_event(self):
        url = 'http://127.0.0.1:8000/api/event/create'
        data = Event.objects.create(
            name="deneme 5",
            start_date="2020-05-23",
            end_date="2020-05-26",
            timezone="Etc/GMT",
            session_id='1'
            )
        response = self.client.post(url,data)
        self.assertEqual(response.status_code, status.HTTP_201_CREATED)

You get this error because, you haven't any Session record which has id 1. You must create Session object before create Event object and provide this created session id to event object. 在 Django APITestCase中,始終為所有測試函數創建新的空數據庫。

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