[英]which field should i use to allow more than one comment?
我正在尝试向拍卖页面添加评论,但只允许在每次拍卖时添加评论,我应该使用哪个模型字段来允许多个评论?
当我尝试在管理页面中添加多个评论时,页面显示它:
此拍卖的评论已经存在。
模型.py:
class Auction_listings(models.Model):
product_image = models.CharField(max_length=500)
product_title = models.CharField(max_length=40)
product_description = models.CharField(max_length=200)
product_category = models.CharField(max_length=20, default="others")
product_price = models.FloatField() #IntegerField()
username = models.CharField(max_length=64)
post_date = models.DateField(auto_now_add=True)
def __str__(self):
return f"{self.product_title}"
class Bids(models.Model):
auction = models.OneToOneField(Auction_listings, primary_key=True, on_delete=models.CASCADE)
username = models.CharField(max_length=64)
is_closed = models.BooleanField(default=False)
bid_value = models.FloatField()
def __str__(self):
return f"by {self.username} in {self.auction}: {self.bid_value}"
class Comments(models.Model):
auction = models.OneToOneField(Auction_listings, primary_key=True, on_delete=models.CASCADE)
username = models.CharField(max_length=64)
content = models.CharField(max_length=150)
date = models.DateField(auto_now_add=True)
def __str__(self):
return f"by {self.username} in {self.auction} on {self.date}"
谢谢你先进
当您使用 OneToOne 字段时,您会将一条评论连接到一次拍卖(一对一)。 对于每次拍卖的多个评论,您应该使用如下外键字段:
class Comments(models.Model):
auction = models.ForeignKey(Auction_listings, on_delete=models.CASCADE)
username = models.CharField(max_length=64)
content = models.CharField(max_length=150)
date = models.DateField(auto_now_add=True)
def __str__(self):
return f"by {self.username} in {self.auction} on {self.date}"
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