perf(organizations): speed up filtered API lists

src/organizations/models.py

@@ -6,6 +6,7 @@ from django.db import models
 from django.db.models import Q
 from django.utils.translation import gettext_lazy as _
 
+from organizations.data_sources import snapshot_data_source_summary
 from organizations.name_normalization import normalize_organization_name
 
 
@@ -116,6 +117,11 @@ class OrganizationDataSnapshot(models.Model):
         default=list,
         help_text=_("Готовый JSON registries для API v2"),
     )
+    data_source_counts = models.JSONField(
+        _("счетчики источников"),
+        default=list,
+        help_text=_("Готовый JSON data_sources для API v2"),
+    )
     updated_at = models.DateTimeField(
         _("дата обновления"),
         auto_now=True,
@@ -129,3 +135,14 @@ class OrganizationDataSnapshot(models.Model):
 
     def __str__(self) -> str:
         return f"Snapshot for {self.organization_id}"
+
+    def save(self, *args, **kwargs) -> None:
+        update_fields = kwargs.get("update_fields")
+        if update_fields is None or "data" in update_fields:
+            self.data_source_counts = snapshot_data_source_summary(self.data)
+            if update_fields is not None:
+                kwargs["update_fields"] = list(
+                    dict.fromkeys([*update_fields, "data_source_counts"])
+                )
+
+        super().save(*args, **kwargs)