Refactor HadisCategory serializers to improve Hadith counting logic

- Updated `get_children_count` method to calculate the total number of Hadiths in a category and its descendants instead of counting active children categories.
- Enhanced code clarity by removing commented-out code and providing detailed docstrings for the new logic.

apps/hadis/serializers/category.py

@@ -134,9 +134,18 @@ class HadisCategorySelectSerializer(serializers.ModelSerializer):
         return Hadis.objects.filter(category=obj, status=True).exists()
 
     def get_children_count(self, obj):
-        """Get count of active children categories that have children or hadis"""
-        children = obj.get_children().filter(sect=obj.sect)
-        return len(children)
+        # """Get count of active children categories that have children or hadis"""
+        # children = obj.get_children().filter(sect=obj.sect)
+        # return len(children)
+        """
+        Calculates the total number of Hadiths in this category 
+        and all its descendants (sub-categories).
+        """
+        # 1. Get all descendants of this category (including itself)
+        family_tree = obj.get_descendants(include_self=True)
+        
+        # 2. Count all Hadiths that belong to any category in this tree
+        return Hadis.objects.filter(category__in=family_tree).count()
     def get_hadis_count(self,obj):
         return len(Hadis.objects.filter(category=obj))
 
@@ -170,9 +179,18 @@ class HadisCategorySelectSourceSerializer(serializers.ModelSerializer):
         return Hadis.objects.filter(category=obj, status=True).exists()
 
     def get_children_count(self, obj):
-        """Get count of active children categories that have children or hadis"""
-        children = obj.get_children().filter(sect=obj.sect , source_type= obj.source_type)
-        return len(children)
+        # """Get count of active children categories that have children or hadis"""
+        # children = obj.get_children().filter(sect=obj.sect)
+        # return len(children)
+        """
+        Calculates the total number of Hadiths in this category 
+        and all its descendants (sub-categories).
+        """
+        # 1. Get all descendants of this category (including itself)
+        family_tree = obj.get_descendants(include_self=True)
+        
+        # 2. Count all Hadiths that belong to any category in this tree
+        return Hadis.objects.filter(category__in=family_tree).count()
     def get_hadis_count(self,obj):
         return len(Hadis.objects.filter(category=obj))