First changes so that Laravel Data and livewire work better together

composer.json

@@ -23,6 +23,7 @@
         "spatie/php-structure-discoverer": "^2.0"
     },
     "require-dev" : {
+        "livewire/livewire" : "^3.0",
         "fakerphp/faker": "^1.14",
         "friendsofphp/php-cs-fixer": "^3.0",
         "inertiajs/inertia-laravel": "dev-master#4508fd1",

src/LaravelDataServiceProvider.php

@@ -2,11 +2,13 @@
 
 namespace Spatie\LaravelData;
 
+use Livewire\Livewire;
 use Spatie\LaravelData\Commands\DataMakeCommand;
 use Spatie\LaravelData\Commands\DataStructuresCacheCommand;
 use Spatie\LaravelData\Contracts\BaseData;
 use Spatie\LaravelData\Support\Caching\DataStructureCache;
 use Spatie\LaravelData\Support\DataConfig;
+use Spatie\LaravelData\Support\Livewire\LivewireDataSynth;
 use Spatie\LaravelData\Support\VarDumper\VarDumperManager;
 use Spatie\LaravelPackageTools\Package;
 use Spatie\LaravelPackageTools\PackageServiceProvider;
@@ -50,6 +52,15 @@ function () {
                 fn ($container) => $class::from($container['request'])
             );
         });
+
+        if(class_exists(Livewire::class)) {
+            $this->registerLivewireSynths();
+        }
+    }
+
+    protected function registerLivewireSynths(): void
+    {
+        Livewire::propertySynthesizer(LivewireDataSynth::class);
     }
 
     public function packageBooted(): void

src/Support/Lazy/LivewireLostLazy.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Spatie\LaravelData\Support\Lazy;
+
+use Exception;
+use Spatie\LaravelData\Lazy;
+
+class LivewireLostLazy extends Lazy
+{
+    public function __construct(
+        public string $dataClass,
+        public string $propertyName
+    ) {
+    }
+
+    public function resolve(): mixed
+    {
+        return throw new Exception("Lazy property `{$this->dataClass}::{$this->propertyName}` was lost when the data object was transformed to be used by Livewire. You can include the property and then the correct value will be set when creating the data object from Livewire again.");
+    }
+}

src/Support/Livewire/LivewireDataSynth.php

@@ -0,0 +1,119 @@
+<?php
+
+namespace Spatie\LaravelData\Support\Livewire;
+
+use Livewire\Mechanisms\HandleComponents\ComponentContext;
+use Livewire\Mechanisms\HandleComponents\Synthesizers\Synth;
+use Spatie\LaravelData\Contracts\BaseData;
+use Spatie\LaravelData\Contracts\TransformableData;
+use Spatie\LaravelData\Support\DataConfig;
+use Spatie\LaravelData\Support\Lazy\LivewireLostLazy;
+
+class LivewireDataSynth extends Synth
+{
+    // TODO:
+    //
+    // Think about Lazy, we can always send them down?
+    // Or only conditional lazy which are true -> probably a better default
+    // What if we want to create a new data object and don't have the lazyvalue
+    // -> we could create a new LiveWireMissingLazy object, which we then use as the lazy value
+    // -> when resolving it would throw an error saying the value was lost in LiveWire
+    //
+    // Problem with computed properties should be sorted out
+    //
+    // DataCollections synth from the PR
+    //
+    // Do we want livewire as an dependency?
+    //
+    // Update docs
+    //
+    // Can we test this?
+    //
+    // Mapping property names, should we do this?
+
+
+    protected DataConfig $dataConfig;
+
+    public static string $key = 'laravel-data-object';
+
+    public function __construct(ComponentContext $context, $path)
+    {
+        $this->dataConfig = app(DataConfig::class);
+
+        parent::__construct($context, $path);
+    }
+
+    public static function match($target)
+    {
+        return $target instanceof BaseData && $target instanceof TransformableData;
+    }
+
+    public function get(&$target, $key): BaseData
+    {
+        return $target->{$key};
+    }
+
+    public function set(&$target, $key, $value): void
+    {
+        $target->{$key} = $value;
+    }
+
+    /**
+     * @param BaseData&TransformableData $target
+     * @param callable(mixed):mixed $dehydrateChild
+     *
+     * @return array
+     */
+    public function dehydrate(
+        BaseData&TransformableData $target,
+        callable $dehydrateChild
+    ): array {
+        $morph = $this->dataConfig->morphMap->getDataClassAlias($target::class) ?? $target::class;
+
+        $payload = $target->all();
+
+        ray($payload);
+
+        foreach ($payload as $key => $value) {
+            $payload[$key] = $dehydrateChild($key, $value);
+        }
+
+        return [
+            $payload,
+            ['morph' => $morph],
+        ];
+    }
+
+    /**
+     * @param mixed $value
+     * @param array $meta
+     * @param callable(mixed):mixed $hydrateChild
+     *
+     * @return BaseData
+     */
+    public function hydrate(
+        array $value,
+        array $meta,
+        callable $hydrateChild
+    ): BaseData {
+        $morph = $meta['morph'];
+
+        $dataClass = $this->dataConfig->morphMap->getMorphedDataClass($morph) ?? $morph;
+
+        $payload = [];
+
+        foreach ($this->dataConfig->getDataClass($dataClass)->properties as $name => $property) {
+            if (array_key_exists($name, $value) === false && $property->type->lazyType) {
+                $payload[$name] = new LivewireLostLazy($dataClass, $name);
+
+                continue;
+            }
+
+            $payload[$name] = $hydrateChild($name, $value[$name]);
+        }
+
+        return $dataClass::factory()
+            ->ignoreMagicalMethod('fromLivewire')
+            ->from($payload);
+    }
+}