-from django.db import models
-import catalogue.models
-from catalogue.fields import OverwritingFileField
-from django.conf import settings
-from django.core.files.storage import FileSystemStorage
-from django.utils.translation import ugettext_lazy as _
-from newtagging import managers
-from os import path
-
-
-picture_storage = FileSystemStorage(location=path.join(settings.MEDIA_ROOT, 'pictures'), base_url=settings.MEDIA_URL + "pictures/")
-
-
-class Picture(models.Model):
- """
- Picture resource.
-
- """
- title = models.CharField(_('title'), max_length=120)
- slug = models.SlugField(_('slug'), max_length=120, db_index=True, unique=True)
- sort_key = models.CharField(_('sort key'), max_length=120, db_index=True, editable=False)
- created_at = models.DateTimeField(_('creation date'), auto_now_add=True, db_index=True)
- changed_at = models.DateTimeField(_('creation date'), auto_now=True, db_index=True)
- xml_file = models.FileField('xml_file', upload_to="xml", storage=picture_storage)
- image_file = models.FileField(_('image_file'), upload_to="images", storage=picture_storage)
- objects = models.Manager()
- tagged = managers.ModelTaggedItemManager(catalogue.models.Tag)
- tags = managers.TagDescriptor(catalogue.models.Tag)
-
- class AlreadyExists(Exception):
- pass
-
- class Meta:
- ordering = ('sort_key',)
-
- verbose_name = _('picture')
- verbose_name_plural = _('pictures')
-
- def save(self, force_insert=False, force_update=False, reset_short_html=True, **kwargs):
- from sortify import sortify
-
- self.sort_key = sortify(self.title)
-
- ret = super(Picture, self).save(force_insert, force_update)
-
- return ret
-
- def __unicode__(self):
- return self.title
-
- @classmethod
- def from_xml_file(cls, xml_file, images_path=None, overwrite=False):
- """
- Import xml and it's accompanying image file.
- """
- from django.core.files import File
- from librarian.picture import WLPicture
- close_xml_file = False
-
- if not isinstance(xml_file, File):
- xml_file = File(open(xml_file))
- close_xml_file = True
- try:
- # use librarian to parse meta-data
- picture_xml = WLPicture.from_file(xml_file)
-
- picture, created = Picture.objects.get_or_create(slug=picture_xml.slug)
- if not created and not overwrite:
- raise Picture.AlreadyExists('Picture %s already exists' % picture_xml.slug)
-
- picture.title = picture_xml.picture_info.title
-
- picture.tags = catalogue.models.Tag.tags_from_info(picture_xml.picture_info)
-
- img = picture_xml.image_file()
- try:
- picture.image_file.save(path.basename(picture_xml.image_path), File(img))
- finally:
- img.close()
-
- picture.xml_file.save("%s.xml" % picture.slug, File(xml_file))
- picture.save()
- finally:
- if close_xml_file:
- xml_file.close()
- return picture