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October 4, 2022 14:50
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Function to resize an image of an ImageField from a Django model. It saves space on S3!
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| import io | |
| from django.core.files.storage import default_storage as storage | |
| def save(self, *args, **kwargs): | |
| super().save(*args, **kwargs) | |
| img_read = storage.open(self.image.name, 'r') | |
| img = Image.open(img_read) | |
| if img.height > 300 or img.width > 300: | |
| output_size = (300, 300) | |
| img.thumbnail(output_size) | |
| in_mem_file = io.BytesIO() | |
| img.save(in_mem_file, format='JPEG') | |
| img_write = storage.open(self.image.name, 'w+') | |
| img_write.write(in_mem_file.getvalue()) | |
| img_write.close() | |
| img_read.close() |
Thanks a lot. This saved me after hours of searching. I had however change line 8 'r' to 'rb'
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img.convert('RGB').save(in_mem_file, format='JPEG')
add .convert() function to chnage RGBA image into RGB else JPEG formatting won't work