fix

core/apps/dashboard/serializers/payment.py

@@ -0,0 +1,25 @@
+# rest framework
+from rest_framework import serializers
+
+# orders
+from core.apps.orders.models import Payment
+
+
+class PaymentListSerializer(serializers.ModelSerializer):
+    employee_name = serializers.SerializerMethodField(method_name='get_employee_name')
+    factory = serializers.SerializerMethodField(method_name='get_factory')
+
+    class Meta:
+        model = Payment
+        fields = [
+            'id', 'employee_name', 'factory', 'price', 'created_at'
+        ]
+
+    def get_employee_name(self, obj):
+        return obj.order.employee_name
+
+    def get_factory(self, obj):
+        return {
+            'id': obj.order.factory.id,
+            'name': obj.order.factory.name,
+        }