Appending properties | laravel-data | Spatie SPATIE Laravel Data =============== spatie.be/open-source [Docs](https://spatie.be/docs) [Laravel-data](https://spatie.be/docs/laravel-data/v4) As-a-resource Appending properties Version v4 v3 v2 v1 Other versions for crawler [v4](https://spatie.be/docs/laravel-data/v4) [v3](https://spatie.be/docs/laravel-data/v3) [v2](https://spatie.be/docs/laravel-data/v2) [v1](https://spatie.be/docs/laravel-data/v1) Appending properties - [ Introduction ](https://spatie.be/docs/laravel-data/v4/introduction) - [ Support us ](https://spatie.be/docs/laravel-data/v4/support-us) - [ Requirements ](https://spatie.be/docs/laravel-data/v4/requirements) - [ Installation & setup ](https://spatie.be/docs/laravel-data/v4/installation-setup) - [ Third party packages ](https://spatie.be/docs/laravel-data/v4/third-party-packages) - [ Questions and issues ](https://spatie.be/docs/laravel-data/v4/questions-issues) - [ Changelog ](https://spatie.be/docs/laravel-data/v4/changelog) - [ About us ](https://spatie.be/docs/laravel-data/v4/about-us) Getting started --------------- - [ Quickstart ](https://spatie.be/docs/laravel-data/v4/getting-started/quickstart) As a DTO -------- - [ Creating a data object ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/creating-a-data-object) - [ Nesting ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/nesting) - [ Collections ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/collections) - [ Abstract Data ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/abstract-data) - [ Casts ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/casts) - [ Optional properties ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/optional-properties) - [ Mapping property names ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/mapping-property-names) - [ Default values ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/defaults) - [ Computed values ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/computed) - [ From a request ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/request-to-data-object) - [ From a model ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/model-to-data-object) - [ Injecting property values ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/injecting-property-values) - [ Factories ](https://spatie.be/docs/laravel-data/v4/as-a-data-transfer-object/factories) Validation ---------- - [ Introduction ](https://spatie.be/docs/laravel-data/v4/validation/introduction) - [ Auto rule inferring ](https://spatie.be/docs/laravel-data/v4/validation/auto-rule-inferring) - [ Using validation attributes ](https://spatie.be/docs/laravel-data/v4/validation/using-validation-attributes) - [ Manual rules ](https://spatie.be/docs/laravel-data/v4/validation/manual-rules) - [ Working with the validator ](https://spatie.be/docs/laravel-data/v4/validation/working-with-the-validator) - [ Nesting Data ](https://spatie.be/docs/laravel-data/v4/validation/nesting-data) - [ Skipping validation ](https://spatie.be/docs/laravel-data/v4/validation/skipping-validation) As a resource ------------- - [ From data to array ](https://spatie.be/docs/laravel-data/v4/as-a-resource/from-data-to-array) - [ From data to resource ](https://spatie.be/docs/laravel-data/v4/as-a-resource/from-data-to-resource) - [ Mapping property names ](https://spatie.be/docs/laravel-data/v4/as-a-resource/mapping-property-names) - [ Appending properties ](https://spatie.be/docs/laravel-data/v4/as-a-resource/appending-properties) - [ Wrapping ](https://spatie.be/docs/laravel-data/v4/as-a-resource/wrapping) - [ Including and excluding properties ](https://spatie.be/docs/laravel-data/v4/as-a-resource/lazy-properties) - [ Transforming data ](https://spatie.be/docs/laravel-data/v4/as-a-resource/transformers) Advanced usage -------------- - [ Eloquent casting ](https://spatie.be/docs/laravel-data/v4/advanced-usage/eloquent-casting) - [ Transforming to TypeScript ](https://spatie.be/docs/laravel-data/v4/advanced-usage/typescript) - [ Working with dates ](https://spatie.be/docs/laravel-data/v4/advanced-usage/working-with-dates) - [ Normalizers ](https://spatie.be/docs/laravel-data/v4/advanced-usage/normalizers) - [ Pipeline ](https://spatie.be/docs/laravel-data/v4/advanced-usage/pipeline) - [ Creating a cast ](https://spatie.be/docs/laravel-data/v4/advanced-usage/creating-a-cast) - [ Creating a transformer ](https://spatie.be/docs/laravel-data/v4/advanced-usage/creating-a-transformer) - [ Creating a rule inferrer ](https://spatie.be/docs/laravel-data/v4/advanced-usage/creating-a-rule-inferrer) - [ Use with Inertia ](https://spatie.be/docs/laravel-data/v4/advanced-usage/use-with-inertia) - [ Use with Livewire ](https://spatie.be/docs/laravel-data/v4/advanced-usage/use-with-livewire) - [ Internal structures ](https://spatie.be/docs/laravel-data/v4/advanced-usage/internal-structures) - [ Mapping rules ](https://spatie.be/docs/laravel-data/v4/advanced-usage/mapping-rules) - [ Validation attributes ](https://spatie.be/docs/laravel-data/v4/advanced-usage/validation-attributes) - [ Get data from a class quickly ](https://spatie.be/docs/laravel-data/v4/advanced-usage/get-data-from-a-class-quickly) - [ Performance ](https://spatie.be/docs/laravel-data/v4/advanced-usage/performance) - [ Commands ](https://spatie.be/docs/laravel-data/v4/advanced-usage/commands) - [ Traits and interfaces ](https://spatie.be/docs/laravel-data/v4/advanced-usage/traits-and-interfaces) - [ In Packages ](https://spatie.be/docs/laravel-data/v4/advanced-usage/in-packages) - [ Available property mappers ](https://spatie.be/docs/laravel-data/v4/advanced-usage/available-property-mappers) Appending properties ==================== It is possible to add some extra properties to your data objects when they are transformed into a resource: ``` SongData::from(Song::first())->additional([ 'year' => 1987, ]); ``` This will output the following array: ``` [ 'name' => 'Never gonna give you up', 'artist' => 'Rick Astley', 'year' => 1987, ] ``` When using a closure, you have access to the underlying data object: ``` SongData::from(Song::first())->additional([ 'slug' => fn(SongData $songData) => Str::slug($songData->title), ]); ``` Which produces the following array: ``` [ 'name' => 'Never gonna give you up', 'artist' => 'Rick Astley', 'slug' => 'never-gonna-give-you-up', ] ``` It is also possible to add extra properties by overwriting the `with` method within your data object: ``` class SongData extends Data { public function __construct( public int $id, public string $title, public string $artist ) { } public static function fromModel(Song $song): self { return new self( $song->id, $song->title, $song->artist ); } public function with() { return [ 'endpoints' => [ 'show' => action([SongsController::class, 'show'], $this->id), 'edit' => action([SongsController::class, 'edit'], $this->id), 'delete' => action([SongsController::class, 'delete'], $this->id), ] ]; } } ``` Now each transformed data object contains an `endpoints` key with all the endpoints for that data object: ``` [ 'id' => 1, 'name' => 'Never gonna give you up', 'artist' => 'Rick Astley', 'endpoints' => [ 'show' => 'https://spatie.be/songs/1', 'edit' => 'https://spatie.be/songs/1', 'delete' => 'https://spatie.be/songs/1', ], ] ``` A good match? ------------- ### What we do best - 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