seperate subjects/transaction on a user basis

core/admin.py

@@ -1,21 +1,43 @@
 from django.contrib import admin
+from django.contrib.auth import get_user_model
+from django.contrib.auth.admin import UserAdmin
 
 from core.models import Subject, Transaction
 
+User = get_user_model()
+
 
 class CustomAdminSite(admin.AdminSite):
     pass
 
 
 admin_site = CustomAdminSite()
+admin_site.register(User, UserAdmin)
 
 
 @admin.register(Subject, site=admin_site)
 class SubjectAdmin(admin.ModelAdmin):
-    pass
+    list_display = ("name",)
+    search_fields = ("name",)
+    exclude = ("user",)
+
+    def save_model(self, request, obj, form, change):
+        if not change:
+            obj.user = request.user
+        return super().save_model(request, obj, form, change)
+
+    def get_search_results(self, request, queryset, search_term):
+        queryset, use_distinct = super().get_search_results(request, queryset, search_term)
+        return queryset.filter(user=request.user), use_distinct
 
 
 @admin.register(Transaction, site=admin_site)
 class TransactionAdmin(admin.ModelAdmin):
     list_display = ("subject", "amount", "booking_date",)
     ordering = ("-booking_date",)
+    search_fields = ("subject__name",)
+    autocomplete_fields = ("subject",)
+
+    def get_search_results(self, request, queryset, search_term):
+        queryset, use_distinct = super().get_search_results(request, queryset, search_term)
+        return queryset.filter(subject__user=request.user), use_distinct