fixed space settings saving issue

cookbook/migrations/0183_alter_space_image.py

@@ -0,0 +1,19 @@
+# Generated by Django 4.0.6 on 2022-08-04 16:46
+
+from django.db import migrations, models
+import django.db.models.deletion
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('cookbook', '0182_userpreference_image'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='space',
+            name='image',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='space_image', to='cookbook.userfile'),
+        ),
+    ]

cookbook/models.py

@@ -253,7 +253,7 @@ class FoodInheritField(models.Model, PermissionModelMixin):
 
 class Space(ExportModelOperationsMixin('space'), models.Model):
     name = models.CharField(max_length=128, default='Default')
-    image = models.ForeignKey("UserFile", on_delete=models.SET_NULL, null=True, related_name='space_image')
+    image = models.ForeignKey("UserFile", on_delete=models.SET_NULL, null=True, blank=True, related_name='space_image')
     created_by = models.ForeignKey(User, on_delete=models.PROTECT, null=True)
     created_at = models.DateTimeField(auto_now_add=True)
     message = models.CharField(max_length=512, default='', blank=True)

cookbook/serializer.py

@@ -257,7 +257,7 @@ class SpaceSerializer(WritableNestedModelSerializer):
     recipe_count = serializers.SerializerMethodField('get_recipe_count')
     file_size_mb = serializers.SerializerMethodField('get_file_size_mb')
     food_inherit = FoodInheritFieldSerializer(many=True)
-    image = UserFileViewSerializer(required=False, many=False)
+    image = UserFileViewSerializer(required=False, many=False, allow_null=True)
 
     def get_user_count(self, obj):
         return UserSpace.objects.filter(space=obj).count()