refactor(Prices): Stats: new stat with_discount count (#716)

open_prices/prices/models.py

@@ -28,6 +28,9 @@
 
 
 class PriceQuerySet(models.QuerySet):
+    def has_discount(self):
+        return self.filter(price_is_discounted=True)
+
     def exclude_discounted(self):
         return self.filter(price_is_discounted=False)
 

open_prices/prices/tests.py

@@ -25,6 +25,10 @@ def setUpTestData(cls):
         PriceFactory(price=8)
         PriceFactory(price=10)
 
+    def test_has_discount(self):
+        self.assertEqual(Price.objects.count(), 3)
+        self.assertEqual(Price.objects.has_discount().count(), 1)
+
     def test_exclude_discounted(self):
         self.assertEqual(Price.objects.count(), 3)
         self.assertEqual(Price.objects.exclude_discounted().count(), 2)

open_prices/stats/migrations/0008_totalstats_price_with_discount_count.py

@@ -0,0 +1,17 @@
+# Generated by Django 5.1.4 on 2025-02-22 10:44
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+    dependencies = [
+        ("stats", "0007_totalstats_product_count_per_source"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="totalstats",
+            name="price_with_discount_count",
+            field=models.PositiveIntegerField(default=0),
+        ),
+    ]

open_prices/stats/models.py

@@ -8,6 +8,7 @@ class TotalStats(SingletonModel):
         "price_count",
         "price_type_product_code_count",
         "price_type_category_tag_count",
+        "price_with_discount_count",
         "price_currency_count",
     ]
     PRODUCT_COUNT_FIELDS = [
@@ -55,6 +56,7 @@ class TotalStats(SingletonModel):
     price_count = models.PositiveIntegerField(default=0)
     price_type_product_code_count = models.PositiveIntegerField(default=0)
     price_type_category_tag_count = models.PositiveIntegerField(default=0)
+    price_with_discount_count = models.PositiveIntegerField(default=0)
     price_currency_count = models.PositiveIntegerField(default=0)
     product_count = models.PositiveIntegerField(default=0)
     product_source_off_count = models.PositiveIntegerField(default=0)
@@ -83,6 +85,10 @@ class TotalStats(SingletonModel):
     user_count = models.PositiveIntegerField(default=0)
     user_with_price_count = models.PositiveIntegerField(default=0)
 
+    # Ideas
+    # - price count per discount type
+    # - ?
+
     created = models.DateTimeField(default=timezone.now)
     updated = models.DateTimeField(auto_now=True)
 
@@ -99,6 +105,7 @@ def update_price_stats(self):
         self.price_type_category_tag_count = Price.objects.filter(
             category_tag__isnull=False
         ).count()
+        self.price_with_discount_count = Price.objects.has_discount().count()
         self.price_currency_count = (
             Price.objects.values_list("currency", flat=True).distinct().count()
         )