Django: resize image before upload

Question

I want to resize image(Pillow) before upload, I write code below but doesn\'t work! and get error:

AttributeError at /m

Answer 1

from PIL import Image
from io import BytesIO
from django.core.files.base import ContentFile
from resizeimage import resizeimage

class SomeModel(models.Model):
    image = models.ImageField(upload_to=your_get_file_path_callback)

    def save(self, *args, **kwargs):
        pil_image_obj = Image.open(self.image)
        new_image = resizeimage.resize_width(pil_image_obj, 100)

        new_image_io = BytesIO()
        new_image.save(new_image_io, format='JPEG')

        temp_name = self.image.name
        self.image.delete(save=False)  

        self.image.save(
            temp_name,
            content=ContentFile(new_image_io.getvalue()),
            save=False
        )

        super(SomeModel, self).save(*args, **kwargs)

P.S. for resizing I've used 'python-image-resize' https://github.com/charlesthk/python-resize-image

Answer 2

For image resizing you can make use of djanof easy thumbnail library.

Below is the sample code,that i have used in my project

options = {'size': (200, 200), 'crop': True}
thumb_url =get_thumbnailer(image path).get_thumbnail(options).url

For reference https://github.com/SmileyChris/easy-thumbnails

Answer 3

There have been some helpful answers, but you might want to understand what is going on with your current code.

Your code raises that exception because of this line :

request.FILES['docfile'] = imga

What is wrong with that ? You are affecting a pillow Image object to a django ImageField element. Those are two different types and when you call you Document constructor, it might expect to find a file form field that contains a _committed attribute.