---
title: controller
framework: CareKit
role: symbol
role_heading: Instance Property
platforms: [iOS 13.0+, Mac Catalyst 13.0+, watchOS 7.0+]
path: carekit/ockchartviewcontroller/controller
---

# controller

An object that handles interacting with data from the store.

## Declaration

```swift
let controller: Controller
```

## See Also

### Configuring Interface Elements

- [chartView](carekit/ockchartviewcontroller/chartview.md)
- [viewSynchronizer](carekit/ockchartviewcontroller/viewsynchronizer.md)