Django cropper - getting additional resized images from cropped image - django

Question

I have problem with getting additional resized images from croped image. I am using django-cropper 0.1.
Originally model for Cropped Image have part of code like this:
class Cropped(models.Model):
def __unicode__(self):
return u'%s-%sx%s' % (self.original, self.w, self.h)
def upload_image(self, filename):
return '%s/crop-%s' % (settings.ROOT, filename)
def save(self, *args, **kwargs): #force_insert=False, force_update=False, using=None):
source = self.original.image.path
target = self.upload_image(os.path.basename(source))
Image.open(source).crop([
self.x, # Left
self.y, # Top
self.x + self.w, # Right
self.y + self.h # Bottom
]).save(django_settings.MEDIA_ROOT + os.sep + target)
self.image = target
super(Cropped, self).save(*args, **kwargs)
But i want to have additional resized images from cropped image so I change code a little and now it looks like that:
class Cropped(models.Model):
def __unicode__(self):
return u'%s-%sx%s' % (self.original, self.w, self.h)
def _get_average_path(self):
return _add_average(self.path)
average_path = property(_get_average_path)
def _get_average_url(self):
return _add_average(self.url)
average_url = property(_get_average_url)
def _get_large_path(self):
return _add_large(self.path)
large_path = property(_get_large_path)
def _get_large_url(self):
return _add_large(self.url)
large_url = property(_get_large_url)
def upload_image(self, filename):
return '%s/crop-%s' % (settings.ROOT, filename)
def save(self, *args, **kwargs): #force_insert=False, force_update=False, using=None):
source = self.original.image.path
target = self.upload_image(os.path.basename(source))
img = Image.open(source).crop([
self.x, # Left
self.y, # Top
self.x + self.w, # Right
self.y + self.h # Bottom
]).save(django_settings.MEDIA_ROOT + os.sep + target)
self.image = target
super(Cropped, self).save(*args, **kwargs)
img = Image.open(self.image.path)
img = img.resize((180, 180), Image.ANTIALIAS)
img.save(self.large_path, 'JPEG')
img = img.resize((104, 104), Image.ANTIALIAS)
img.save(self.average_path, 'JPEG')
But it still doing the basic job. Can someone help me and give any suggestion of what should I fix in this code?

Answer 1

I answer my own question because i found solution and maybe it someone. Maybe it is now the best solution, but it works. First it is needed to add additional field for additional, resized image:
average = models.ImageField(
blank=True, null=True,
verbose_name = _('Image'),
upload_to = upload_image,
editable = False,
)
Then it is needed to chnge save() method to something like this:
def save(self, *args, **kwargs): #force_insert=False, force_update=False, using=None):
source = self.original.image.path
target = self.upload_image(os.path.basename(source))
Image.open(source).crop([
self.x, # Left
self.y, # Top
self.x + self.w, # Right
self.y + self.h # Bottom
]).save(django_settings.MEDIA_ROOT + os.sep + target)
self.image = target
splited_target = target.split("/")
avepath = "/average-".join(splited_target)
self.average = avepath
Image.open(self.image).resize((104, 104), Image.ANTIALIAS).save(django_settings.MEDIA_ROOT + avepath, 'JPEG')
super(Cropped, self).save(*args, **kwargs)
And that is all.