add functionality with queryset modifiers

admin_tools_stats/admin.py

@@ -108,7 +108,7 @@ class DashboardStatsAdmin(admin.ModelAdmin):
                 "fields": (
                     "graph_key",
                     "graph_title",
-                    ("model_app_name", "model_name", "date_field_name"),
+                    ("model_app_name", "model_name", "date_field_name", "queryset_modifiers"),
                     ("operation_field_name", "distinct"),
                     ("user_field_name", "show_to_users"),
                     ("allowed_type_operation_field_name", "type_operation_field_name"),

admin_tools_stats/migrations/0022_dashboardstats_queryset_modifiers.py

@@ -0,0 +1,32 @@
+# Generated by Django 4.2.3 on 2023-10-12 11:26
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("admin_tools_stats", "0021_auto_20230210_1102"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="dashboardstats",
+            name="queryset_modifiers",
+            field=models.JSONField(
+                blank=True,
+                help_text=(
+                    "Additional queryset modifiers in JSON format:<br>"
+                    "<pre>"
+                    "[<br>"
+                    '    {"filter": {"status": "active"}},<br>'
+                    '    {"exclude": {"status": "deleted"}}<br>'
+                    '    {"my_annotion_function": {}}<br>'
+                    "]"
+                    "</pre>"
+                    "Ensure the format is a valid JSON array of objects."
+                ),
+                null=True,
+                verbose_name="Queryset modifiers",
+            ),
+        ),
+    ]

admin_tools_stats/models.py

@@ -315,6 +315,22 @@ class DashboardStats(models.Model):
             "Can contain multiple fields divided by comma.",
         ),
     )
+    queryset_modifiers = JSONField(
+        verbose_name=_("Queryset modifiers"),
+        null=True,
+        blank=True,
+        help_text=mark_safe(
+            "Additional queryset modifiers in JSON format:<br>"
+            "<pre>"
+            "[<br>"
+            '    {"filter": {"status": "active"}},<br>'
+            '    {"exclude": {"status": "deleted"}}<br>'
+            '    {"my_annotion_function": {}}<br>'
+            "]"
+            "</pre>"
+            "Ensure the format is a valid JSON array of objects."
+        ),
+    )
     distinct = models.BooleanField(
         default=False,
         null=False,
@@ -439,6 +455,14 @@ def get_model(self):
 
     def get_queryset(self):
         qs = self.get_model().objects
+        if self.queryset_modifiers:
+            for modifier in self.queryset_modifiers:
+                method_name = list(modifier.keys())[0]
+                method_args = modifier[method_name]
+                if isinstance(method_args, dict):
+                    qs = getattr(qs, method_name)(**method_args)
+                else:
+                    qs = getattr(qs, method_name)(*method_args)
         return qs
 
     def get_operation_field(self, operation):