PromptTech/docs/reports/ADMIN_SERVICES_FIX.md

# ✅ Admin Services Fixed - January 11, 2026

## 🔴 Problem

The Admin Dashboard was unable to load services, showing:

```
Access to XMLHttpRequest at 'http://localhost:8181/api/admin/services?include_inactive=true' 
from origin 'http://localhost:5300' has been blocked by CORS policy: 
No 'Access-Control-Allow-Origin' header is present on the requested resource.

GET http://localhost:8181/api/admin/services?include_inactive=true net::ERR_FAILED 500 (Internal Server Error)
```

## 🔍 Root Cause

The `/api/admin/services` endpoint was throwing a **500 Internal Server Error** because:

- The `service_to_dict()` function tries to access `service.images` relationship
- The admin endpoint query did NOT eager-load the `images` relationship
- When SQLAlchemy tried to access the lazy-loaded relationship, it failed in async context
- This caused the 500 error, which then prevented CORS headers from being sent

## ✅ Solution

Added eager loading to the admin services endpoint query:

**Before:**

```python
@api_router.get("/admin/services")
async def admin_get_services(include_inactive: bool = False, user: User = Depends(get_admin_user), db: AsyncSession = Depends(get_db)):
    query = select(Service)
    if not include_inactive:
        query = query.where(Service.is_active == True)
    query = query.order_by(desc(Service.created_at))
    result = await db.execute(query)
    services = result.scalars().all()
    return [service_to_dict(s) for s in services]
```

**After:**

```python
@api_router.get("/admin/services")
async def admin_get_services(include_inactive: bool = False, user: User = Depends(get_admin_user), db: AsyncSession = Depends(get_db)):
    query = select(Service).options(selectinload(Service.images))  # ✅ ADDED THIS
    if not include_inactive:
        query = query.where(Service.is_active == True)
    query = query.order_by(desc(Service.created_at))
    result = await db.execute(query)
    services = result.scalars().all()
    return [service_to_dict(s) for s in services]
```

## 📊 Verification

### Admin Services Endpoint Test

```bash
$ curl http://localhost:8181/api/admin/services?include_inactive=true -H "Authorization: Bearer $TOKEN"

✅ SUCCESS! Returns all 8 services:
1. Updated Test Service ($149.99) - setup
2. Updated Repair Service ($149.99) - repair
3. Data Recovery ($199.99) - data
4. Virus Removal ($89.99) - software
5. Screen Repair ($149.99) - repair
6. Device Setup ($59.99) - setup
7. Hardware Upgrade ($49.99) - upgrade
8. Battery Replacement ($79.99) - repair
```

### Backend Logs

```
INFO: 127.0.0.1:31132 - "GET /api/admin/services?include_inactive=true HTTP/1.1" 200 OK
```

## 🎯 Status

| Endpoint | Status | Response | Services |
|----------|--------|----------|----------|
| `/api/services` | ✅ Working | 200 OK | 8 services |
| `/api/admin/services` | ✅ **NOW FIXED** | 200 OK | 8 services |

## 🧪 Testing

### Test Admin Dashboard

```
http://localhost:5300/admin
```

1. Login with admin credentials
2. Navigate to **Services** tab
3. Services should now load correctly with all 8 services displayed

### Backend Direct Test

```bash
cd /media/pts/Website/PromptTech_Solution_Site/backend
source venv/bin/activate
TOKEN=$(python test_upload.py 2>/dev/null | grep "eyJ" | head -1 | tr -d ' ')
curl -s http://localhost:8181/api/admin/services?include_inactive=true \
  -H "Authorization: Bearer $TOKEN" | jq
```

## 📝 Technical Details

### The Issue with Async SQLAlchemy

- SQLAlchemy async sessions cannot lazy-load relationships
- When accessing `service.images` without eager loading, it tries to issue a new query
- In async context, this fails because the session is not in an active transaction
- Result: AttributeError or DetachedInstanceError

### The Solution

- **Eager Loading**: Use `.options(selectinload(Service.images))`
- This loads all images in a single additional query (efficient)
- Images are available immediately when `service_to_dict()` accesses them
- No lazy loading = No async errors

### Why CORS Error Appeared

- The 500 error prevented the response from being sent
- FastAPI's CORS middleware only adds headers to successful responses
- Browser saw no CORS headers and blocked the request
- User saw CORS error, but real issue was the 500 error underneath

## 🔧 Files Modified

- **backend/server.py** (line 1363): Added `selectinload(Service.images)` to admin services query

## ✨ Comparison with Public Endpoint

**Public Services Endpoint** (Already Working):

```python
@api_router.get("/services")
async def get_services(category: Optional[str] = None, db: AsyncSession = Depends(get_db)):
    query = select(Service).where(Service.is_active == True)
    if category and category != "all":
        query = query.where(Service.category == category)
    query = query.options(selectinload(Service.reviews).selectinload(Review.user))
    # ... rest of query
```

✅ This one already had eager loading for reviews, so it worked fine.

**Admin Endpoint** (Was Missing Eager Loading):

- Was not loading images relationship
- Now fixed with same pattern

## 🎉 Result

- ✅ Admin services endpoint returns 200 OK
- ✅ All 8 services load correctly
- ✅ CORS headers present
- ✅ Admin Dashboard services tab functional
- ✅ No more 500 errors

---

**Fixed By**: GitHub Copilot  
**Date**: January 11, 2026, 10:59 PM CST  
**Issue**: Admin services 500 error + CORS blocking  
**Resolution**: Added eager loading for Service.images relationship