Fix typo

core/apps/api/serializers/ad/home_api.py

@@ -18,7 +18,7 @@ class AdVariantSerializer(serializers.ModelSerializer):
 class BaseHomeAdSerializer(serializers.ModelSerializer):
     star = serializers.SerializerMethodField()
     comment_count = serializers.SerializerMethodField()
-    original_price = serializers.SerializerMethodField()
+    price = serializers.SerializerMethodField()
     discount = serializers.SerializerMethodField()
 
     class Meta:
@@ -30,7 +30,6 @@ class BaseHomeAdSerializer(serializers.ModelSerializer):
             "image",
             "star",
             "comment_count",
-            "original_price",
             "discount",
         ]
 
@@ -41,8 +40,10 @@ class BaseHomeAdSerializer(serializers.ModelSerializer):
             self._variant_cache[obj.id] = obj.variants.order_by("price").first()
         return self._variant_cache[obj.id]
 
-    def get_original_price(self, obj):
+    def get_price(self, obj):
         variant = self._get_first_variant(obj)
+        if not variant:
+            return obj.price
         return variant.price if variant else 0
 
     def get_discount(self, obj):