使用django-simple-history跟踪外键历史记录的Django模型历史

Question

我有三个有历史记录的模型：

class WifiUser(models.Model):
    ....
    wifiDevice = models.OneToOneField(WifiDevice, on_delete=models.CASCADE, default=None)
    wifiSim = models.OneToOneField(WifiSim, on_delete=models.CASCADE, default=None)
    history = HistoricalRecords()

class WifiDevice(models.Model):
    ....
    history = HistoricalRecords()

class WifiSim(models.Model):
    ....
    history = HistoricalRecords()

我想用对应的外键历史记录来跟踪历史。但是当访问Wifiuser的历史时，我得到了WifiDevice和WifiSim的最新值。我希望WifiDevice和WifiSim的历史记录指向他们的记录。对此最好的方法是什么？

Answer 1

为了跟踪历史，而不是只显示最后一个对象，我建议您为历史添加一个模型，其中包含wifiUser wifiDevice和wifiSim，也许还可以添加访问日期和时间的日期，以便自动添加日期我建议您查看此答案(Django auto now and auto add now)

Answer 2

我在Upwork上看到你的帖子，你需要覆盖两个模型WifiDevice和WifiSim的字符串方法，如下所示：

class WifiDevice(models.Model):
    ....
    history = HistoricalRecords()

    def __str__ (self):
    return self.history // the solution 




class WifiSim(models.Model):
    ....
    history = HistoricalRecords()
    def __str__ (self):
    return self.history // the solution 

Answer 3

class BilingualCorpus(models.Model):
    file_url = models.FileField(upload_to='corpus_files/', validators=[FileExtensionValidator(allowed_extensions=['txt', 'csv', 'tmx', 'xlsx'])])
    file_name = models.CharField(max_length=255, default='none')
    name = models.CharField(max_length=50,default='none')
    s_lang = models.CharField(max_length=5,default='en')
    t_lang = models.CharField(max_length=5,default='th')
    note = models.TextField(blank=True)
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    created_at = models.DateTimeField(auto_now_add=True, blank=True)
    updated_at = models.DateTimeField(auto_now=True, blank=True)

class CorpusStatus(models.Model):
    status = models.CharField(max_length=50, default='Unchecked')

class  BilingualSentence(models.Model):
    corpus = models.ForeignKey(BilingualCorpus, on_delete=models.CASCADE)
    source = models.TextField(blank=True)
    target = models.TextField(blank=True)
    status = models.ForeignKey(CorpusStatus, blank=True, null=True, on_delete=models.SET_NULL)