在django admin中验证图像大小

from django.core.exceptions import ValidationError
from django.utils.translation import gettext_lazy as _

def validate_image_size(image, max_width, max_height):
    if image.width > max_width or image.height > max_height:
        raise ValidationError(
            _('Image dimensions (%(width)dx%(height)d) exceed maximum allowed size (%(max_width)dx%(max_height)d).'),
            code='invalid_image_size',
            params={
                'width': image.width,
                'height': image.height,
                'max_width': max_width,
                'max_height': max_height,
            },
        )

from django.db import models
from .validators import validate_image_size

class MyModel(models.Model):
    image = models.ImageField(upload_to='images/', validators=[validate_image_size(max_width=1024, max_height=768)])