Example #1
0
 def from_file(cls, file, user, site, desc=''):
     '''
     Construct an ImageCopy from an uploaded file
     '''
     img = ImageCopy(owner=user, site=site, description=desc)
     
     # strip exif from given image
     file.seek(0)
     exif = pyexiv2.ImageMetadata.from_buffer(file.read())
     exif.read()
     
     exif_dict = dict()
     for k in exif.exif_keys:
         if exif[k].human_value:
             try:
                 exif_dict[exif[k].label] = exif[k].human_value.decode('utf-8')
             except UnicodeDecodeError:
                 # ignore invalid chars
                 pass
         
         del exif[k]
         
     img.exif_str = json.dumps(exif_dict)
         
     img.file = ImageFile.from_file(file)
     img.save()
     
     img.id_str = struk.int2str(img.id)
     img.save()
     
     return img
Example #2
0
 def from_file(cls, file):
     '''
     Construct an ImageFile from file
     '''
     md5 = cls.md5sum(file)
     
     try:
         imgf = cls.objects.filter(md5=md5).get()
     except ImageFile.DoesNotExist:
         imgf = cls(md5=md5)
         imgf.save()
         
         try:
             imgf.id_str = struk.int2str(imgf.id)
             imgf.file = FieldFile(imgf, imgf.file, imgf.gen_filename())
             imgf.save()
             
             dir = os.path.dirname(imgf.file.path)
             if not os.path.exists(dir):    
                 os.makedirs(dir)
             
             # make sure converted to jpg
             if isinstance(file, InMemoryUploadedFile):
                 tmp = tempfile.NamedTemporaryFile()
                 file.seek(0)
                 tmp.write(file.read())
                 tmp.flush()
                 img = Image.open(tmp.name)
             else: # TemporaryUploadedFile or File
                 img = Image.open(file.file.name)
             
             #img.save(imgf.file.path, quality=95, optimize=True)
             img.save(imgf.file.path, quality=95)
             #img.save(imgf.file.path)
             imgf.width_f = img.size[0]
             imgf.height_f = img.size[1]
             del img
             imgf.resample()
             # save updated width and height of sizes
             imgf.save()
         except:
             imgf.delete()
             raise
     
     return imgf
Example #3
0
def _post_post_save(instance, created, **kwargs):
    ''''''
    if not instance.id_str:
        instance.id_str = struk.int2str(instance.id)
        instance.save()