Sometimes, we want to raise a validation error in a model’s save method in Python Django.
In this article, we’ll look at how to raise a validation error in a model’s save method in Python Django.
How to raise a validation error in a model’s save method in Python Django?
To raise a validation error in a model’s save method in Python Django, we can use is_clean to check if the model is cleaned.
For instance, we write
class BaseModelExt(models.Model):
is_cleaned = False
def clean(self):
# ...
self.is_cleaned = True
def save(self, *args, **kwargs):
if not self.is_cleaned:
self.clean()
super().save(*args, **kwargs)
to add the clean method into our model class.
After the validation checks are run in clean, we set self.is_cleaned to True.
And then in save, we call clean is is_cleaned is False.
Finally, we call save to save the values.
Conclusion
To raise a validation error in a model’s save method in Python Django, we can use is_clean to check if the model is cleaned.
