63 lines
2.1 KiB
Python
63 lines
2.1 KiB
Python
from django.conf import settings
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from django.db import models
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from django.utils.translation import ugettext as _
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from django.utils.translation import ugettext_lazy, ugettext_noop
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from ..utils.models import RESTModelMixin
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class Mediafile(RESTModelMixin, models.Model):
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"""
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Class for uploaded files which can be delivered under a certain url.
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"""
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mediafile = models.FileField(upload_to='file', verbose_name=ugettext_lazy('File'))
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"""
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See https://docs.djangoproject.com/en/dev/ref/models/fields/#filefield
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for more information.
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"""
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title = models.CharField(max_length=255, unique=True, blank=True, verbose_name=ugettext_lazy('Title'))
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"""A string representing the title of the file."""
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uploader = models.ForeignKey(settings.AUTH_USER_MODEL, null=True, blank=True, verbose_name=ugettext_lazy('Uploaded by'))
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"""A user – the uploader of a file."""
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timestamp = models.DateTimeField(auto_now_add=True)
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"""A DateTimeField to save the upload date and time."""
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class Meta:
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"""
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Meta class for the mediafile model.
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"""
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ordering = ['title']
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permissions = (
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('can_see', ugettext_noop('Can see the list of files')),
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('can_upload', ugettext_noop('Can upload files')),
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('can_manage', ugettext_noop('Can manage files')),)
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def __str__(self):
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"""
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Method for representation.
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"""
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return self.title
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def get_filesize(self):
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"""
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Transforms bytes to kilobytes or megabytes. Returns the size as string.
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"""
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# TODO: Read http://stackoverflow.com/a/1094933 and think about it.
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try:
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size = self.mediafile.size
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except OSError:
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size_string = _('unknown')
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else:
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if size < 1024:
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size_string = '< 1 kB'
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elif size >= 1024 * 1024:
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mB = size / 1024 / 1024
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size_string = '%d MB' % mB
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else:
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kB = size / 1024
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size_string = '%d kB' % kB
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return size_string
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