77 lines
2.7 KiB
Python
77 lines
2.7 KiB
Python
from __future__ import absolute_import, unicode_literals
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import logging
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from django.db import models
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from django.utils.timezone import now
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from documents.models import Document
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from .events import (
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event_document_auto_check_in, event_document_check_in,
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event_document_forceful_check_in
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)
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from .exceptions import DocumentNotCheckedOut
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from .literals import STATE_CHECKED_OUT, STATE_CHECKED_IN
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logger = logging.getLogger(__name__)
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class DocumentCheckoutManager(models.Manager):
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def checkout_document(self, document, expiration_datetime, user, block_new_version=True):
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self.create(document=document, expiration_datetime=expiration_datetime, user=user, block_new_version=block_new_version)
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def checked_out_documents(self):
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return Document.objects.filter(pk__in=self.model.objects.all().values_list('document__pk', flat=True))
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def expired_check_outs(self):
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expired_list = Document.objects.filter(pk__in=self.model.objects.filter(expiration_datetime__lte=now()).values_list('document__pk', flat=True))
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logger.debug('expired_list: %s', expired_list)
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return expired_list
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def check_in_expired_check_outs(self):
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for document in self.expired_check_outs():
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document.check_in()
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def is_document_checked_out(self, document):
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if self.model.objects.filter(document=document):
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return True
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else:
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return False
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def check_in_document(self, document, user=None):
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try:
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document_checkout = self.model.objects.get(document=document)
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except self.model.DoesNotExist:
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raise DocumentNotCheckedOut
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else:
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if user:
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if self.document_checkout_info(document).user != user:
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event_document_forceful_check_in.commit(actor=user, target=document)
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else:
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event_document_check_in.commit(actor=user, target=document)
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else:
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event_document_auto_check_in.commit(target=document)
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document_checkout.delete()
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def document_checkout_info(self, document):
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try:
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return self.model.objects.get(document=document)
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except self.model.DoesNotExist:
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raise DocumentNotCheckedOut
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def document_checkout_state(self, document):
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if self.is_document_checked_out(document):
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return STATE_CHECKED_OUT
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else:
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return STATE_CHECKED_IN
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def are_document_new_versions_allowed(self, document, user=None):
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try:
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checkout_info = self.document_checkout_info(document)
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except DocumentNotCheckedOut:
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return True
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else:
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return not checkout_info.block_new_version
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