[CHANGE] Switch to Django Solo

allianceauth/custom_css/admin.py

@@ -2,16 +2,16 @@
 Admin classes for custom_css app
 """
 
+# Django
+from django.contrib import admin
+
+# Django Solos
+from solo.admin import SingletonModelAdmin
+
 # Alliance Auth Custom CSS
 from allianceauth.custom_css.models import CustomCSS
 from allianceauth.custom_css.forms import CustomCSSAdminForm
 
-# Alliance Auth Framework
-from allianceauth.framework.admin import SingletonModelAdmin
-
-# Django
-from django.contrib import admin
-
 
 @admin.register(CustomCSS)
 class CustomCSSAdmin(SingletonModelAdmin):

allianceauth/custom_css/models.py

@@ -2,13 +2,11 @@
 Models for the custom_css app
 """
 
-import hashlib
 import os
 import re
-import sys
 
-# Alliance Auth Framework
-from allianceauth.framework.models import SingletonModel
+# Django Solo
+from solo.models import SingletonModel
 
 # Django
 from django.conf import settings
@@ -62,7 +60,7 @@ class CustomCSS(SingletonModel):
 
         self.pk = 1
 
-        if len(self.css.replace(" ", "")) > 0:
+        if self.css and len(self.css.replace(" ", "")) > 0:
             # Write the custom CSS to a file
             custom_css_file = open(
                 f"{settings.STATIC_ROOT}allianceauth/custom-styles.css", "w+"