From 5c62b6ac965f99b8c666ab737e4ce24bdf136d1b Mon Sep 17 00:00:00 2001
From: Eric Gullickson <16152721+ericgullickson@users.noreply.github.com>
Date: Sat, 17 Jan 2026 22:37:59 -0600
Subject: [PATCH] fix: convert DECIMAL columns to numbers in fuel logs API
 (refs #49)
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PostgreSQL DECIMAL columns return as strings from pg driver.
- Add Number() conversion for fuelUnits and costPerUnit in toEnhancedResponse()
- Add query invalidation for 'all' key to fix dynamic updates

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 backend/src/features/fuel-logs/domain/fuel-logs.service.ts | 4 ++--
 frontend/src/features/fuel-logs/hooks/useFuelLogs.tsx      | 1 +
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/backend/src/features/fuel-logs/domain/fuel-logs.service.ts b/backend/src/features/fuel-logs/domain/fuel-logs.service.ts
index bb28d0d..1b70350 100644
--- a/backend/src/features/fuel-logs/domain/fuel-logs.service.ts
+++ b/backend/src/features/fuel-logs/domain/fuel-logs.service.ts
@@ -282,8 +282,8 @@ export class FuelLogsService {
       tripDistance: row.trip_distance ?? undefined,
       fuelType: row.fuel_type as FuelType,
       fuelGrade: row.fuel_grade ?? undefined,
-      fuelUnits: row.fuel_units,
-      costPerUnit: row.cost_per_unit,
+      fuelUnits: Number(row.fuel_units),
+      costPerUnit: Number(row.cost_per_unit),
       totalCost: Number(row.total_cost),
       locationData: row.location_data ?? undefined,
       notes: row.notes ?? undefined,
diff --git a/frontend/src/features/fuel-logs/hooks/useFuelLogs.tsx b/frontend/src/features/fuel-logs/hooks/useFuelLogs.tsx
index b9a0a02..1238811 100644
--- a/frontend/src/features/fuel-logs/hooks/useFuelLogs.tsx
+++ b/frontend/src/features/fuel-logs/hooks/useFuelLogs.tsx
@@ -45,6 +45,7 @@ export const useFuelLogs = (vehicleId?: string) => {
     mutationFn: (data: CreateFuelLogRequest) => fuelLogsApi.create(data),
     onSuccess: (_res, variables) => {
       queryClient.invalidateQueries({ queryKey: ['fuelLogs', variables.vehicleId] });
+      queryClient.invalidateQueries({ queryKey: ['fuelLogs', 'all'] });
       queryClient.invalidateQueries({ queryKey: ['fuelLogsStats', variables.vehicleId] });
     },
   });