CODEWITHSUNDEEP
djangodjango-modelstimestamp
mart1n
mart1n

Reputation: 6203

Updating timestamps of related models

I have the following two models:

class Blog(TimeStampedModel):
    summary = models.TextField()
    status = models.CharField(max_length=255)


class Entry(TimeStampedModel):
    author = models.CharField(max_length=255)
    text = models.TextField()
    blog = models.ForeignKey(Blog, models.CASCADE, related_name='entries')

Both models sublass a common meta-model that defines a timestamp for when each model was last updated:

class TimeStampedModel(models.Model):
    last_changed = models.DateTimeField(auto_now=True)

    class Meta:
        abstract = True

This works fine when saving each model individually. However, in my use case, when an Entry is updated, it should also reflect in the update of the last_changed timestamp of the associated Blog.

Is there any easy way to tell Django to also bump the timestamps of related models?

Upvotes: 0

Views: 77

Answers (1)

arikan
arikan

Reputation: 893

I admit that this is hacky, but you can override the save method of Entry model:

def save(self, *args, **kwargs):
    self.blog.save()
    super().save(*args, **kwargs)

Upvotes: 1

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