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Run model validation before saving a model instance

Author:
buriy
Posted:
January 12, 2011
Language:
Python
Version:
1.2
Score:
2 (after 2 ratings)

How to validate your model at save using the pre_save signal.

from http://groups.google.com/group/django-developers/browse_thread/thread/eb2f760e4c8d7911/482d8fd36fba4596?hl=en&lnk=gst&q=problem+with+Model.objects.create#482d8fd36fba4596 

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from django.db.models.signals import pre_save

def validate_model(sender, **kwargs):
    if 'raw' in kwargs and not kwargs['raw']:
        kwargs['instance'].full_clean()

pre_save.connect(validate_model, dispatch_uid='validate_models')

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