通過兩個字段串聯創建的Django數據庫條目

Question

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)

我想將md5(user + label)的串聯自動填充為unique_key

例如

user ='詹姆斯'

label ='KDJ'

concat = user + label unique_key = print(hashlib.md5(concat.encode()).hexdigest())

輸出量

1935636b374a17f87636460e4307f736

Answer 1

您可以為此重寫保存方法：

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)