[英]Django database entry created by concatenation of two fields
I have the following Django model 我有以下Django模型
class Labels(models.Model):
user = models.CharField(max_length=200)
label = models.CharField(max_length=200)
live = models.CharField(max_length=1)
unique_key = models.CharField(max_length=200)
def __str__(self):
return '%s / %s' % (self.user, self.label)
I would like unique_key
to be automatically populated with a concatenation of md5(user + label)
我想将md5(user + label)
的串联自动填充为unique_key
eg 例如
user
= 'James' user
='詹姆斯'
label
= 'KDJ' label
='KDJ'
concat = user + label unique_key = print(hashlib.md5(concat.encode()).hexdigest())
Output 输出量
1935636b374a17f87636460e4307f736
You can override save method for this: 您可以为此重写保存方法:
class Labels(models.Model):
def save(self, *args, **kwargs):
concat = self.user + self.label
self.unique_key = hashlib.md5(concat.encode()).hexdigest()
super().save(*args, **kwargs)
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