Detect Event Slug from Referrer URL
## Detect Event Slug from Referrer URL
Extracts the event slug from the HTTP referrer header for contextual ordering.
### Endpoint
`GET https://convention.photos/api/event-prefix`
### Description
When users navigate from the photo gallery to the ordering system, this endpoint parses the referrer URL to determine which event they were viewing, pre-populating the order form.
### Headers
- **Referer**: The referring URL from photos.conventionphotography.com
### Response
Returns JSON with detected event slug:
```json {
"eventSlug": "ASDAR26"
} ```
### Use Cases
- Auto-detect event when linking from gallery - Pre-populate order forms with correct event - Maintain context across platforms
### Authentication
No authentication required.
Response
Detected event slug