Django: Save image from url inside another model

Question

class Item(models.Model): name = models.CharField(max_length = 200) image = models.ImageField(upload_to = 'read', blank=True) creative_url = models.CharField(max_length = 200) description = RichTextField() def save(self, *args, **kwargs): content = urllib2.urlopen(self.creative_url).read() self.image.save("test.jpg", File(content)) super(Item, self).save(*args, **kwargs) 

Throws an exception: Object 'str' does not have attribute 'name'

I tried to follow this answer (http://stackoverflow.com/questions/1393202/django-add-image-in-an-imagefield-from-image-url) But this did not help to get rid of the exception.

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 AttributeError at /admin/collection/item/1/ 'str' object has no attribute 'name' Request Method: POST Request URL: http://127.0.0.1:8000/admin/collection/item/1/ Django Version: 1.2.5 Exception Type: AttributeError Exception Value: 'str' object has no attribute 'name' Exception Location: D:\FF\django\core\files\base.py in _get_size, line 39 Python Executable: C:\Python27\python.exe Python Version: 2.7.2 Python Path: ['D:\\FF', 'C:\\Python27\\lib\\site-packages\\django_social_auth-0.6.7-py2.7.egg', 'C:\\Python27\\lib\\site-packages\\python_openid-2.2.5-py2.7.egg', 'C:\\Python27\\lib\\site-packages\\oauth2-1.5.211-py2.7.egg', 'C:\\Python27\\lib\\site-packages\\httplib2-0.7.4-py2.7.egg', 'C:\\Python27\\lib\\site-packages\\selenium-2.20.0-py2.7.egg', 'C:\\Python27\\lib\\site-packages\\ipython-0.12-py2.7.egg', 'C:\\Python27\\lib\\site-packages\\django_localeurl-1.5-py2.7.egg', 'C:\\Python27\\lib\\site-packages\\pil-1.1.7-py2.7-win32.egg', 'C:\\Python27\\lib\\site-packages\\pip-1.1-py2.7.egg', 'C:\\Windows\\system32\\python27.zip', 'C:\\Python27\\DLLs', 'C:\\Python27\\lib', 'C:\\Python27\\lib\\plat-win', 'C:\\Python27\\lib\\lib-tk', 'C:\\Python27', 'C:\\Python27\\lib\\site-packages', 'c:\\python27\\lib\\site-packages'] Server time: Tue, 24 Apr 2012 14:19:00 +0300 

Answer 1

Instead of File you need to use django.core.files.base.ContentFile

 self.image.save("test.jpg", ContentFile(content), save=False) 

File accepts a file object or StringIO object that has a size property, or you need to manually set the size property of a File or ImageFile to make it work with StringIO :

 s = StringIO() s.write(urllib2.urlopen(self.creative_url).read()) s.size = s.tell() self.image.save('test.jpg', File(s), save=False) 

Also pay attention to save=False inside self.image.save : by default save=True , this will save the instance that contains the image field. Thus, the save logic in your code can run into an infinite loop and reach maximum recursion depth.

Answer 2

Try something like:

(It is assumed that: Programmatically save the image to Django ImageField )

 from django.db import models from django.core.files.base import ContentFile import urllib2 from PIL import Image from StringIO import StringIO class Item(models.Model): name = models.CharField(max_length=200) image = models.ImageField(upload_to='read', blank=True) creative_url = models.URLField(max_length=200) class Meta: verbose_name = "Item" verbose_name_plural = "Items" def download_image(self, url): input_file = StringIO(urllib2.urlopen(url).read()) output_file = StringIO() img = Image.open(input_file) if img.mode != "RGB": img = img.convert("RGB") img.save(output_file, "JPEG") self.image.save(self.name+".jpg", ContentFile(output_file.getvalue()), save=False) def save(self, *args, **kwargs): self.download_image(self.creative_url) super(Item, self).save(*args, **kwargs) 

Answer 3

using queries

 from django.core.files.base import ContentFile from requests import request, HTTPError def save(self, *args, **kwargs): try: data = request('GET', self.creative_url,) data.raise_for_status() self.image.save('fname.jpg', ContentFile(data.content),save=False) except HTTPError: pass super(Item, self).save(*args, **kwargs)