create new image after crop

apps/gallery/serializers.py

@@ -1,8 +1,9 @@
 from django.conf import settings
 from django.core.validators import MinValueValidator, MaxValueValidator
+from django.core.files.base import ContentFile
 from rest_framework import serializers
-from sorl.thumbnail.parsers import parse_crop
-from sorl.thumbnail.parsers import ThumbnailParseError
+from sorl.thumbnail import get_thumbnail
+from sorl.thumbnail.parsers import parse_crop, ThumbnailParseError
 from django.utils.translation import gettext_lazy as _
 
 from . import models
@@ -88,15 +89,23 @@ class CropImageSerializer(ImageSerializer):
         quality = validated_data.pop('quality')
         crop = validated_data.pop('crop')
 
+        crop_params = {
+            'geometry': f'{width}x{height}',
+            'quality': quality,
+            'crop': crop,
+        }
+        cropped_image = self._image.get_cropped_image(**crop_params)
         image = self._image
+        image.pk = None
+        crop_params['geometry_string'] = crop_params.pop('geometry')
+        resized = get_thumbnail(self._image.image, **crop_params)
+        image.image.save(resized.name, ContentFile(resized.read()), True)
+        image.save()
 
         if image and width and height:
             setattr(image,
                     'cropped_image',
-                    image.get_cropped_image(
-                        geometry=f'{width}x{height}',
-                        quality=quality,
-                        crop=crop))
+                    cropped_image)
         return image
 
     @property