---
phase: 11-site-data-model-foundation
plan: 03
subsystem: ui, api
tags: [react, tanstack-router, tanstack-query, tailwind, lucide, pydantic, sqlalchemy]

# Dependency graph
requires:
  - phase: 11-site-data-model-foundation plan 01
    provides: Sites CRUD API with device assignment endpoints
  - phase: 11-site-data-model-foundation plan 02
    provides: sitesApi frontend client and site routes
provides:
  - Site column in fleet table with clickable site name links
  - Multi-select bulk assign devices to sites from fleet list
  - Site selector dropdown on device detail page (assign/unassign)
  - DeviceResponse includes site_id and site_name fields (backend + frontend)
affects: [14-site-dashboard]

# Tech tracking
tech-stack:
  added: []
  patterns:
    - "Bulk assign uses dialog with site select and mutation invalidation"
    - "Multi-select checkboxes with Set<string> state and select-all toggle"

key-files:
  created: []
  modified:
    - backend/app/schemas/device.py
    - backend/app/services/device.py
    - frontend/src/lib/api.ts
    - frontend/src/components/fleet/FleetTable.tsx
    - frontend/src/routes/_authenticated/tenants/$tenantId/devices/$deviceId.tsx

key-decisions:
  - "Site column placed after Model column for logical grouping of device identity fields"
  - "Viewers see site name as text, operators get a Select dropdown for assignment"

patterns-established:
  - "Multi-select pattern: checkbox column + Set<string> state + action bar with bulk operation"

requirements-completed: [SITE-03, SITE-04, SITE-05]

# Metrics
duration: 3min
completed: 2026-03-19
---

# Phase 11 Plan 03: Device-Site Assignment UI Summary

**Site column in fleet table with multi-select bulk assign, site selector on device detail, and DeviceResponse site fields**

## Performance

- **Duration:** 3 min
- **Started:** 2026-03-19T02:49:59Z
- **Completed:** 2026-03-19T02:53:16Z
- **Tasks:** 2
- **Files modified:** 5

## Accomplishments
- DeviceResponse now includes site_id and site_name on backend and frontend
- Fleet table has checkbox column for multi-select with bulk "Assign to site" action
- Fleet table has Site column showing clickable site name links (or "--" for unassigned)
- Device detail page has site selector dropdown for assign/change/remove site

## Task Commits

Each task was committed atomically:

1. **Task 1: Add site_id and site_name to DeviceResponse** - `ddb2b3e` (feat)
2. **Task 2: Add Site column, multi-select bulk assign, and site selector** - `98e328c` (feat)

## Files Created/Modified
- `backend/app/schemas/device.py` - Added site_id and site_name optional fields to DeviceResponse
- `backend/app/services/device.py` - Added site fields to _build_device_response, selectinload(Device.site) to eager loading
- `frontend/src/lib/api.ts` - Added site_id and site_name to DeviceResponse interface
- `frontend/src/components/fleet/FleetTable.tsx` - Checkbox column, Site column, multi-select state, bulk assign dialog
- `frontend/src/routes/_authenticated/tenants/$tenantId/devices/$deviceId.tsx` - Site selector dropdown with assign/unassign mutation

## Decisions Made
- Site column placed after Model column for logical grouping of device identity fields
- Viewers see site name as plain text; operators get a Select dropdown for changing assignment
- Bulk assign uses a Dialog component with site selector and mutation pattern

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
None

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- Device-site relationship fully wired end-to-end (backend model, API, frontend views)
- Site detail page ready for Phase 14 dashboard expansion with device list
- All site management features operational: CRUD, assign, unassign, bulk assign

## Self-Check: PASSED

All 5 modified files verified on disk. Both task commits (ddb2b3e, 98e328c) verified in git log.

---
*Phase: 11-site-data-model-foundation*
*Completed: 2026-03-19*