102 lines
4.5 KiB
Python
102 lines
4.5 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2014-2016 Andrey Antukh <niwi@niwi.nz>
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# Copyright (C) 2014-2016 Jesús Espino <jespinog@gmail.com>
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# Copyright (C) 2014-2016 David Barragán <bameda@dbarragan.com>
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# Copyright (C) 2014-2016 Alejandro Alonso <alejandro.alonso@kaleidos.net>
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import hashlib
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from django.db import models
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from django.conf import settings
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from django.contrib.contenttypes.models import ContentType
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from django.contrib.contenttypes.fields import GenericForeignKey
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from django.utils import timezone
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from django.utils.translation import ugettext_lazy as _
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from django.utils.text import get_valid_filename
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from taiga.base.utils.files import get_file_path
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def get_attachment_file_path(instance, filename):
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return get_file_path(instance, filename, "attachments")
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class Attachment(models.Model):
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owner = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, blank=True,
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related_name="change_attachments",
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verbose_name=_("owner"))
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project = models.ForeignKey("projects.Project", null=False, blank=False,
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related_name="attachments", verbose_name=_("project"))
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content_type = models.ForeignKey(ContentType, null=False, blank=False,
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verbose_name=_("content type"))
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object_id = models.PositiveIntegerField(null=False, blank=False,
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verbose_name=_("object id"))
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content_object = GenericForeignKey("content_type", "object_id")
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created_date = models.DateTimeField(null=False, blank=False,
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verbose_name=_("created date"),
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default=timezone.now)
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modified_date = models.DateTimeField(null=False, blank=False,
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verbose_name=_("modified date"))
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name = models.CharField(blank=True, default="", max_length=500)
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size = models.IntegerField(null=True, blank=True, editable=False, default=None)
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attached_file = models.FileField(max_length=500, null=True, blank=True,
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upload_to=get_attachment_file_path,
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verbose_name=_("attached file"))
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sha1 = models.CharField(default="", max_length=40, verbose_name=_("sha1"), blank=True)
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is_deprecated = models.BooleanField(default=False, verbose_name=_("is deprecated"))
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description = models.TextField(null=False, blank=True, verbose_name=_("description"))
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order = models.IntegerField(default=0, null=False, blank=False, verbose_name=_("order"))
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_importing = None
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class Meta:
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verbose_name = "attachment"
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verbose_name_plural = "attachments"
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ordering = ["project", "created_date", "id"]
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permissions = (
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("view_attachment", "Can view attachment"),
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)
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index_together = [("content_type", "object_id")]
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def __init__(self, *args, **kwargs):
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super(Attachment, self).__init__(*args, **kwargs)
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self._orig_attached_file = self.attached_file
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def _generate_sha1(self, blocksize=65536):
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hasher = hashlib.sha1()
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while True:
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buff = self.attached_file.file.read(blocksize)
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if not buff:
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break
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hasher.update(buff)
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self.sha1 = hasher.hexdigest()
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def save(self, *args, **kwargs):
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if not self._importing or not self.modified_date:
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self.modified_date = timezone.now()
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if self.attached_file:
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if not self.sha1 or self.attached_file != self._orig_attached_file:
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self._generate_sha1()
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save = super().save(*args, **kwargs)
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self._orig_attached_file = self.attached_file
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if self.attached_file:
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self.attached_file.file.close()
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return save
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def __str__(self):
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return "Attachment: {}".format(self.id)
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