画像の URL を取得しました。オブジェクトの保存中にそこから ProcessedImageField 属性を設定したいと考えています。これまでのところ、私はこれを持っています:
class Video(Media):
url = models.URLField('url', max_length=256, default='')
embed_url = models.URLField('embed url', max_length=256, default='')
thumbnail = ProcessedImageField(upload_to='uploads',
processors=[ResizeToFit(width=1024, height=1024, upscale=False)],
format='JPEG',
options={'quality': 75})
def save(self, *args, **kwargs):
from django.core.files.temp import NamedTemporaryFile
import shutil
import requests
import re
params = {
'url': self.url,
'autoplay': 1,
'format': 'json',
}
try:
data = requests.get('http://www.youtube.com/oembed', params=params).json()
embed_url = re.search('src=[\'"]([^\'"]*)[\'"]', data['html']).group(1)
thumbnail_url = data['thumbnail_url']
except:
pass
response = requests.get(thumbnail_url, stream=True)
img_temp = NamedTemporaryFile(delete=True)
shutil.copyfileobj(response.raw, img_temp)
# now image data are in img_temp, how to pass that to ProcessedImageField?
super(Video, self).save(*args, **kwargs)