# PHProjectChangeRequest A request to change asset data in a Photos project extension. ``` class PHProjectChangeRequest ``` ## Overview Make a project change request to alter a project’s title or metadata. Respond to project change requests by updating your user interface as assets are added, modified, or removed. ## Topics ### Creating Change Requests [`init(project: PHProject)`](/documentation/Photos/PHProjectChangeRequest/init(project:)) Creates a change request around the specified project. [`var title: String`](/documentation/Photos/PHProjectChangeRequest/title) The title of the change request. [`var projectExtensionData: Data`](/documentation/Photos/PHProjectChangeRequest/projectExtensionData) Compressed project-specific data to use in the change request. ### Responding to Change Requests [`func setProjectPreviewImage(NSImage)`](/documentation/Photos/PHProjectChangeRequest/setProjectPreviewImage(_:)) Updates the project preview in Photos. [`func setKeyAsset(PHAsset?)`](/documentation/Photos/PHProjectChangeRequest/setKeyAsset(_:)) Sets the key asset representing the project. ### Removing Assets [`func removeAssets(T)`](/documentation/Photos/PHProjectChangeRequest/removeAssets(_:)-n825) Removes assets of a certain type from the collection. [`func removeAssets(PHFetchResult)`](/documentation/Photos/PHProjectChangeRequest/removeAssets(_:)-3ytt3) Removes assets based on a fetch result. [`- (void) removeAssets:(id) assets;`](/documentation/Photos/PHProjectChangeRequest/removeAssets:) Removes the specified assets from the project. ## Relationships ### Conforms To [`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible) [`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol) [`Hashable`](/documentation/Swift/Hashable) [`CVarArg`](/documentation/Swift/CVarArg) [`Equatable`](/documentation/Swift/Equatable) [`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible) ### Inherits From [`PHChangeRequest`](/documentation/Photos/PHChangeRequest) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)