Implement PATCH for pprs

backend/app/api/endpoints/pprs.py

@@ -101,6 +101,39 @@ async def update_ppr(
     return ppr
 
 
+@router.patch("/{ppr_id}", response_model=PPR)
+async def patch_ppr(
+    request: Request,
+    ppr_id: int,
+    ppr_in: PPRUpdate,
+    db: Session = Depends(get_db),
+    current_user: User = Depends(get_current_active_user)
+):
+    """Partially update a PPR record (only provided fields will be updated)"""
+    db_ppr = crud_ppr.get(db, ppr_id=ppr_id)
+    if not db_ppr:
+        raise HTTPException(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail="PPR record not found"
+        )
+    
+    # For PATCH, we only update fields that are explicitly provided (not None)
+    ppr = crud_ppr.update(db, db_obj=db_ppr, obj_in=ppr_in)
+    
+    # Send real-time update
+    if hasattr(request.app.state, 'connection_manager'):
+        await request.app.state.connection_manager.broadcast({
+            "type": "ppr_updated",
+            "data": {
+                "id": ppr.id,
+                "ac_reg": ppr.ac_reg,
+                "status": ppr.status.value
+            }
+        })
+    
+    return ppr
+
+
 @router.patch("/{ppr_id}/status", response_model=PPR)
 async def update_ppr_status(
     request: Request,