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我有一個模型,我想通過ImageMagick創建一個縮略圖(是與線命令),它的工作原理,但我不能將創建的圖像與我的模型MedicoImage中的字段「迷你」相關聯。動態創建ImageField Django
class MedicoImage(models.Model):
medico = models.ForeignKey(Medico)
imagem = models.ImageField(max_length=300,upload_to='img_medico')
mini = models.ImageField(max_length=300,upload_to='img_medico/mini',verbose_name=u'Miniatura',null=True, blank=True)
def save(self, *args, **kwargs):
super(MedicoImage, self).save(*args, **kwargs)
if not self.mini:
path_destino = os.path.dirname(self.imagem.path) + '/mini/'
path_destino += os.path.basename(self.imagem.path).partition('.')[0] + '_mini' + '.png'
comando = 'convert ' + self.imagem.path + ' -resize 30% ' + path_destino
if subprocess.call(comando,shell=True) == 0:
f = File(open(path_destino,'r'))
self.mini(path_destino, f.read())
self.mini.save()
print 'Thumbnail created!'
這裏有什麼問題?
f = File(open(path_destino,'r'))
self.mini(path_destino, f.read())
self.mini.save()
您是否使用'django.core.files'中的'File'? – aganders3 2012-03-08 17:55:51
是的,我正在導入 from django.core.files import文件 – rayashi 2012-03-08 18:02:04