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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Django model fields do not raise the correct error","articleBody":"[VersionField](https://github.com/rbarrois/python-semanticversion/blob/master/semantic_version/django_fields.py#L48C7-L48C19) and [SpecField](https://github.com/rbarrois/python-semanticversion/blob/master/semantic_version/django_fields.py#L84) both raise a ValueError exception when an incorrect value is passed to Version constructor or BaseSpec.parse function. \r\n\r\nThe documentation in django for create custom models fields says https://docs.djangoproject.com/en/5.0/howto/custom-model-fields/#converting-values-to-python-objects:\r\n\u003e For to_python(), if anything goes wrong during value conversion, you should raise a [ValidationError](https://docs.djangoproject.com/en/5.0/ref/exceptions/#django.core.exceptions.ValidationError) exception.\r\n\r\nI discover this error making a ModelForm from a model that included a VersionField field. Raising a ValueError makes the form crash instead of handle the error gracefully.","author":{"url":"https://github.com/daniboygg","@type":"Person","name":"daniboygg"},"datePublished":"2024-06-27T11:57:36.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/157/python-semanticversion/issues/157"}