37 lines
1.4 KiB
Python
37 lines
1.4 KiB
Python
from __future__ import absolute_import
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import logging
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from django.db import models
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from django.utils.translation import ugettext_lazy as _
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from documents.models import DocumentVersion, get_filename_from_uuid
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from documents.conf.settings import STORAGE_BACKEND
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from django_gpg.runtime import gpg
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from .managers import DocumentVersionSignatureManager
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logger = logging.getLogger(__name__)
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class DocumentVersionSignature(models.Model):
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"""
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Model that describes a document version signature properties
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"""
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document_version = models.ForeignKey(DocumentVersion, verbose_name=_(u'document version'), editable=False)
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signature_file = models.FileField(blank=True, null=True, upload_to=get_filename_from_uuid, storage=STORAGE_BACKEND(), verbose_name=_(u'signature file'), editable=False)
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has_embedded_signature = models.BooleanField(default=False, verbose_name=_(u'has embedded signature'), editable=False)
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objects = DocumentVersionSignatureManager()
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def delete_detached_signature(self):
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self.signature_file.storage.delete(self.signature_file.path)
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def save(self, *args, **kwargs):
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if not self.pk:
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self.has_embedded_signature = gpg.has_embedded_signature(self.document_version.open(raw=True))
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super(DocumentVersionSignature, self).save(*args, **kwargs)
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class Meta:
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verbose_name = _(u'document version signature')
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verbose_name_plural = _(u'document version signatures')
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