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# PersistentModel

An interface that enables SwiftData to manage a Swift class as a stored model.

```
protocol PersistentModel : AnyObject, Observable, Hashable, Identifiable, SendableMetatype
```

## Topics

### Creating a persistent model

[`init(backingData:)`](/documentation/SwiftData/PersistentModel/init(backingData:))

### Identifying the model instance

[`persistentModelID`](/documentation/SwiftData/PersistentModel/persistentModelID)

[`PersistentIdentifier`](/documentation/SwiftData/PersistentIdentifier)

A type that describes the aggregate identity of a SwiftData model.

[`modelContext`](/documentation/SwiftData/PersistentModel/modelContext)

### Accessing a value by key path

[`getValue(forKey:)`](/documentation/SwiftData/PersistentModel/getValue(forKey:)-299oe)

[`getValue(forKey:)`](/documentation/SwiftData/PersistentModel/getValue(forKey:)-3o59k)

[`getValue(forKey:)`](/documentation/SwiftData/PersistentModel/getValue(forKey:)-4cs0c)

[`getValue(forKey:)`](/documentation/SwiftData/PersistentModel/getValue(forKey:)-5m792)

[`getValue(forKey:)`](/documentation/SwiftData/PersistentModel/getValue(forKey:)-998oq)

[`getTransformableValue(forKey:)`](/documentation/SwiftData/PersistentModel/getTransformableValue(forKey:))

### Modifying a value by key path

[`setValue(forKey:to:)`](/documentation/SwiftData/PersistentModel/setValue(forKey:to:)-18176)

[`setValue(forKey:to:)`](/documentation/SwiftData/PersistentModel/setValue(forKey:to:)-3mmp2)

[`setValue(forKey:to:)`](/documentation/SwiftData/PersistentModel/setValue(forKey:to:)-3uqwc)

[`setValue(forKey:to:)`](/documentation/SwiftData/PersistentModel/setValue(forKey:to:)-8wepb)

[`setValue(forKey:to:)`](/documentation/SwiftData/PersistentModel/setValue(forKey:to:)-xt24)

[`setTransformableValue(forKey:to:)`](/documentation/SwiftData/PersistentModel/setTransformableValue(forKey:to:))

### Accessing supplementary information

[`schemaMetadata`](/documentation/SwiftData/PersistentModel/schemaMetadata)

[`persistentBackingData`](/documentation/SwiftData/PersistentModel/persistentBackingData)

[`hasChanges`](/documentation/SwiftData/PersistentModel/hasChanges)

[`isDeleted`](/documentation/SwiftData/PersistentModel/isDeleted)

### Internal

[Internal symbols](/documentation/SwiftData/PersistentModelInternal)

Restricted-use symbols that the framework requires for macro expansion and
other internal tasks.


---

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