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

@@ -2,11 +2,13 @@
 Models for the custom_css app
 """
 
+import hashlib
 import os
 import re
+import sys
 
-# Django Solo
-from solo.models import SingletonModel
+# Alliance Auth Framework
+from allianceauth.framework.models import SingletonModel
 
 # Django
 from django.conf import settings
@@ -60,7 +62,7 @@ class CustomCSS(SingletonModel):
 
         self.pk = 1
 
-        if self.css and len(self.css.replace(" ", "")) > 0:
+        if 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+"

allianceauth/framework/admin.py

@@ -0,0 +1,58 @@
+"""
+Admin classes for the framework app
+"""
+
+from django.contrib import admin
+
+
+class SingletonModelAdmin(admin.ModelAdmin):
+    """
+    Singleton Model Admin
+    Prevents Django admin users deleting the singleton or adding extra rows.
+    """
+
+    actions = None  # Removes the default delete action.
+
+    def has_add_permission(self, request):  # pylint: disable=unused-argument
+        """
+        Has "add" permissions
+
+        :param request:
+        :type request:
+        :return:
+        :rtype:
+        """
+
+        return self.model.objects.all().count() == 0
+
+    def has_change_permission(
+        self, request, obj=None  # pylint: disable=unused-argument
+    ):
+        """
+        Has "change" permissions
+
+        :param request:
+        :type request:
+        :param obj:
+        :type obj:
+        :return:
+        :rtype:
+        """
+
+        return True
+
+    def has_delete_permission(
+        self, request, obj=None  # pylint: disable=unused-argument
+    ):
+        """
+        Has "delete" permissions
+
+        :param request:
+        :type request:
+        :param obj:
+        :type obj:
+        :return:
+        :rtype:
+        """
+
+        return False

allianceauth/framework/models.py

@@ -0,0 +1,47 @@
+"""
+AA framework models
+"""
+
+from django.db import models
+
+
+class SingletonModel(models.Model):
+    """
+    SingletonModel
+    """
+
+    class Meta:  # pylint: disable=too-few-public-methods
+        """
+        Model meta definitions
+        """
+
+        abstract = True
+
+    def save(self, *args, **kwargs):
+        """
+        "Save" action
+
+        :param args:
+        :type args:
+        :param kwargs:
+        :type kwargs:
+        :return:
+        :rtype:
+        """
+
+        self.pk = 1
+        super().save(*args, **kwargs)
+
+    def delete(self, *args, **kwargs):
+        """
+        "Delete" action
+
+        :param args:
+        :type args:
+        :param kwargs:
+        :type kwargs:
+        :return:
+        :rtype:
+        """
+
+        pass  # pylint: disable=unnecessary-pass

allianceauth/project_template/project_name/settings/base.py

@@ -22,7 +22,6 @@ INSTALLED_APPS = [
     'django.contrib.staticfiles',
     'django.contrib.humanize',
     'django_celery_beat',
-    'solo',
     'bootstrapform',
     'django_bootstrap5',  # https://github.com/zostera/django-bootstrap5
     'sortedm2m',

pyproject.toml

@@ -50,7 +50,6 @@ dependencies = [
     "django-esi>=5",
     "django-redis>=5.2",
     "django-registration<3.4,>=3.3",
-    "django-solo",
     "django-sortedm2m",
     "dnspython",
     "mysqlclient>=2.1",