如何从Django Queryset返回元组中的特定信息

我有一个简单的模型，其中一个元组返回如下信息：

class Store(models.Model):
STORE_BRAND = (
    ('nike', 'Nike'),
    ('adidas', 'Adidas'),
    ('puma', 'Puma'),
)
online_store = models.CharField(unique=True, max_length=255, choices=STORE_BRAND)

def __str__(self):
    return self.online_store

我试图返回存储名称，以便在上下文处理器的条件语句中使用它

store_brand = Store.objects.get(online_store='nike')

工作正常，返回

<Store: nike> 

---

我做错了什么？

您正在使用对象引用属性。您应该使用正确的属性来引用要访问的值

>>> store_brand = Store.objects.get(online_store='nike')

>>> store_brand.online_store == 'nike'  # the attribute online_store
True
>>> store_brand.__str__() == 'nike'  # since you defined __str__ to return the required attribute, you can use this too
True

---

嗯，

store\u brand

是一个

store

对象，而不是字符串。您可以通过

store\u brand.online\u store==“nike”

查看。

>>> store_brand = Store.objects.get(online_store='nike')

>>> store_brand.online_store == 'nike'  # the attribute online_store
True
>>> store_brand.__str__() == 'nike'  # since you defined __str__ to return the required attribute, you can use this too
True