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August 29, 2015 14:04
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import uuid | |
import requests | |
from django.core.files.base import ContentFile | |
from django.db import models | |
from django.db.models.fields.files import ImageFileDescriptor, ImageFieldFile | |
class UrlImageFileDescriptor(ImageFileDescriptor): | |
def __init__(self, field): | |
super(UrlImageFileDescriptor, self).__init__(field) | |
def __set__(self, instance, value): | |
if not value: | |
return | |
if isinstance(value, str): | |
value = value.strip() | |
if len(value) < 1: | |
return | |
if value == self.__get__(instance): | |
return | |
# Fetch and store image | |
try: | |
response = requests.get(value, stream=True) | |
_file = "" | |
for chunk in response.iter_content(): | |
_file+=chunk | |
headers = response.headers | |
if 'content_type' in headers: | |
content_type = "." + headers['content_type'].split('/')[1] | |
else: | |
content_type = "." + value.split('.')[-1] | |
name = str(uuid.uuid4()) + content_type | |
value = ContentFile(_file, name) | |
except Exception as e: | |
print e | |
pass | |
super(UrlImageFileDescriptor,self).__set__(instance, value) | |
class UrlImageField(models.ImageField): | |
descriptor_class = UrlImageFileDescriptor | |
class TryField(models.Model): | |
logo = UrlImageField(upload_to="victor") |
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