How to assign filename to Image in Django based on EXIF DateTime

I would like to read EXIF information from a user-uploaded image in Django, then use that EXIF info to generate the filename to store the image as (under the animal_img/alfred-0012 directory), for example:

animal_img/alfred-0012

Original filename: P1110438.JPG

P1110438.JPG

Date taken: 2012-07-22

2012-07-22

Name: Alfred

Alfred

Intended filename: alfred-20120722.jpg

alfred-20120722.jpg

Somehow, this had been working up until recently, but Django has been complaining about not finding the file with [Errno 2] No such file or directory: 'P1110438.JPG'

[Errno 2] No such file or directory: 'P1110438.JPG'

The code I've been using in my model to rename the images:

def img_namer(instance, filename):
path = 'animal_img/%s-%04d/' % (instance.name.lower(), instance.id)
name = instance.name.lower() + Image.open(filename)._getexif()[36867] + ".jpg"

return os.path.join(path, name)

image = models.ImageField(
default=None,
blank=True,
upload_to=img_namer,

)


I can see the limitations with trying to open the ImageFile before it's been properly saved, however this had been working, like I said, so maybe I'm doing something wrong? Any help is appreciated!

1 Answer
1

I found your question while trying to solve a similar problem...

By replacing Image.open(filename) with Image.open(instance.image) it works for me.

Image.open(filename)

Image.open(instance.image)

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