How to implement image resizing on upload from Django admin?

Question

Django

Hello, there is an ImageField field and I need to make it possible to set the image size on upload in the admin panel, that is, to display fields in the admin panel where the user can set the image size (width and height) himself. Is there a way to make this possible?

Answer 1

Override save method in model class?

class Model(model.Model):
    _image=models.ImageField(upload_to='folder')
    thumb=models.ImageField(upload_to='folder')
    description=models.CharField()

    def set_image(self, val):
        self._image = val
        self._image_changed = True

        # Or put whole logic in here
        small = rescale_image(self.image,width=100,height=100)
        self.image_small=SimpleUploadedFile(name,small_pic)

    def get_image(self):
        return self._image

    image = property(get_image, set_image)

    # this is not needed if small_image is created at set_image
    def save(self, *args, **kwargs):
        if getattr(self, '_image_changed', True):
            small=rescale_image(self.image,width=100,height=100)
            self.image_small=SimpleUploadedFile(name,small_pic)
        super(Model, self).save(*args, **kwargs)

Taken from here stackoverflow.com/questions/4269605/django-overrid...