mirror of
https://github.com/jazzband/django-avatar.git
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c3fadc0377
git-svn-id: http://django-avatar.googlecode.com/svn/trunk@30 c76b2324-5f53-0410-85ac-b1078a54aeeb
78 lines
No EOL
2.7 KiB
Python
78 lines
No EOL
2.7 KiB
Python
import datetime
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import os.path
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from django.db import models
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from django.contrib.auth.models import User
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from django.core.files.base import ContentFile
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from django.utils.translation import ugettext as _
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try:
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from cStringIO import StringIO
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except ImportError:
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from StringIO import StringIO
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try:
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from hashlib import md5
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except ImportError:
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from md5 import new as md5
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try:
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from PIL import ImageFile
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except ImportError:
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import ImageFile
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from avatar import AVATAR_STORAGE_DIR, AVATAR_RESIZE_METHOD
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def avatar_file_path(instance=None, filename=None, user=None):
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user = user or instance.user
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return os.path.join(AVATAR_STORAGE_DIR, user.username, filename)
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class Avatar(models.Model):
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email_hash = models.CharField(max_length=128, blank=True)
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user = models.ForeignKey(User)
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primary = models.BooleanField(default=False)
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avatar = models.ImageField(max_length=1024, upload_to=avatar_file_path, blank=True)
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date_uploaded = models.DateTimeField(default=datetime.datetime.now)
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def __unicode__(self):
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return _(u'Avatar for %s') % self.user
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def save(self, force_insert=False, force_update=False):
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self.email_hash = md5(self.user.email).hexdigest().lower()
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if self.primary:
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avatars = Avatar.objects.filter(user=self.user, primary=True)\
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.exclude(id=self.id)
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avatars.update(primary=False)
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super(Avatar, self).save(force_insert, force_update)
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def thumbnail_exists(self, size):
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return self.avatar.storage.exists(self.avatar_name(size))
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def create_thumbnail(self, size):
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orig = self.avatar.storage.open(self.avatar.name, 'rb').read()
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p = ImageFile.Parser()
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p.feed(orig)
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try:
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image = p.close()
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except IOError:
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return # What should we do here? Render a "sorry, didn't work" img?
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(w, h) = image.size
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if w > h:
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diff = (w - h) / 2
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image = image.crop((diff, 0, w - diff, h))
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else:
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diff = (h - w) / 2
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image = image.crop((0, diff, w, h - diff))
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image = image.resize((size, size), AVATAR_RESIZE_METHOD)
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thumb = StringIO()
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if image.mode != "RGB":
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image = image.convert("RGB")
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image.save(thumb, "JPEG")
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thumb_file = ContentFile(thumb.getvalue())
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thumb = self.avatar.storage.save(self.avatar_name(size), thumb_file)
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def avatar_url(self, size):
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return self.avatar.storage.url(self.avatar_name(size))
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def avatar_name(self, size):
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return os.path.join(AVATAR_STORAGE_DIR, self.user.username,
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'resized', str(self.id), '-'.join([str(size), self.avatar.name])) |