19 lines
588 B
Python
19 lines
588 B
Python
from __future__ import unicode_literals
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from django.apps import apps
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from .exceptions import NewDocumentVersionNotAllowed
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def handler_check_new_version_creation(sender, instance, **kwargs):
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"""
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Make sure that new version creation is allowed for this document
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"""
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NewVersionBlock = apps.get_model(
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app_label='checkouts', model_name='NewVersionBlock'
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)
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if NewVersionBlock.objects.is_blocked(instance.document) and not instance.pk:
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# Block only new versions (no pk), not existing version being updated.
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raise NewDocumentVersionNotAllowed
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