57 lines
2.3 KiB
Python
57 lines
2.3 KiB
Python
from __future__ import absolute_import
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import logging
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import datetime
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from django.db import models, IntegrityError
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from django.utils.translation import ugettext_lazy as _
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from django.contrib.contenttypes.models import ContentType
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from django.contrib.contenttypes import generic
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from documents.models import Document
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from history.api import create_history
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from .managers import DocumentCheckoutManager
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from .exceptions import DocumentAlreadyCheckedOut
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from .events import HISTORY_DOCUMENT_CHECKED_OUT
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logger = logging.getLogger(__name__)
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class DocumentCheckout(models.Model):
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"""
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Model to store the state and information of a document checkout
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"""
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document = models.ForeignKey(Document, verbose_name=_(u'document'), unique=True)
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checkout_datetime = models.DateTimeField(verbose_name=_(u'check out date and time'), blank=True, null=True)
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expiration_datetime = models.DateTimeField(verbose_name=_(u'check out expiration date and time'), help_text=_(u'Amount of time to hold the document checked out in minutes.'))
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user_content_type = models.ForeignKey(ContentType, null=True, blank=True) # blank and null added for ease of db migration
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user_object_id = models.PositiveIntegerField(null=True, blank=True)
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user_object = generic.GenericForeignKey(ct_field='user_content_type', fk_field='user_object_id')
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block_new_version = models.BooleanField(default=True, verbose_name=_(u'block new version upload'), help_text=_(u'Do not allow new version of this document to be uploaded.'))
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#block_metadata
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#block_editing
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#block tag add/remove
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objects = DocumentCheckoutManager()
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def __unicode__(self):
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return unicode(self.document)
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def save(self, *args, **kwargs):
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if not self.pk:
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self.checkout_datetime = datetime.datetime.now()
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result = super(DocumentCheckout, self).save(*args, **kwargs)
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create_history(HISTORY_DOCUMENT_CHECKED_OUT, source_object=self.document, data={'user': self.user_object, 'document': self.document})
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return result
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@models.permalink
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def get_absolute_url(self):
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return ('checkout_info', [self.document.pk])
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class Meta:
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verbose_name = _(u'document checkout')
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verbose_name_plural = _(u'document checkouts')
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