[2.x] Allow deepMerge on custom properties

src/MergeProp.php

@@ -13,11 +13,13 @@ class MergeProp implements Mergeable
 
     /**
      * @param  mixed  $value
+     * @param  string[]  $mergeStrategies
      */
-    public function __construct($value)
+    public function __construct($value, array $mergeStrategies = [])
     {
         $this->value = $value;
         $this->merge = true;
+        $this->mergeStrategies = $mergeStrategies;
     }
 
     public function __invoke()

src/MergesProps.php

@@ -8,6 +8,8 @@ trait MergesProps
 
     protected bool $deepMerge = false;
 
+    protected array $mergeStrategies = [];
+
     public function merge(): static
     {
         $this->merge = true;
@@ -31,4 +33,9 @@ public function shouldDeepMerge(): bool
     {
         return $this->deepMerge;
     }
+
+    public function mergeStrategies(): array
+    {
+        return $this->mergeStrategies;
+    }
 }

src/Response.php

@@ -319,13 +319,23 @@ public function resolveMergeProps(Request $request): array
             ->filter(fn ($prop) => $prop->shouldDeepMerge())
             ->keys();
 
+        $mergeStrategies = $mergeProps
+            ->map(function ($prop, $key) {
+                return collect($prop->mergeStrategies())
+                    ->map(fn ($strategy) => $key.".".$strategy)
+                    ->toArray();
+            })
+            ->flatten()
+            ->values();
+
         $mergeProps = $mergeProps
             ->filter(fn ($prop) => ! $prop->shouldDeepMerge())
             ->keys();
 
         return array_filter([
             'mergeProps' => $mergeProps->toArray(),
             'deepMergeProps' => $deepMergeProps->toArray(),
+            'mergeStrategies' => $mergeStrategies->toArray(),
         ], fn ($prop) => count($prop) > 0);
     }
 

src/ResponseFactory.php

@@ -134,10 +134,11 @@ public function merge($value): MergeProp
 
     /**
      * @param  mixed  $value
+     * @parram null|string|string[]  $mergeStrategies
      */
-    public function deepMerge($value): MergeProp
+    public function deepMerge($value, $mergeStrategies = null): MergeProp
     {
-        return (new MergeProp($value))->deepMerge();
+        return (new MergeProp($value, Arr::wrap($mergeStrategies)))->deepMerge();
     }
 
     /**

tests/DeepMergePropTest.php

@@ -27,4 +27,11 @@ public function test_can_resolve_bindings_when_invoked(): void
 
         $this->assertInstanceOf(Request::class, $mergeProp());
     }
+
+    public function test_can_use_single_string_as_merge_strategy(): void
+    {
+        $mergeProp = (new MergeProp(['key' => 'value'], ['key']))->deepMerge();
+
+        $this->assertEquals(['key'], $mergeProp->mergeStrategies());
+    }
 }

tests/ResponseTest.php

@@ -201,6 +201,45 @@ public function test_server_response_with_deep_merge_props(): void
         $this->assertSame('<div id="app" data-page="{&quot;component&quot;:&quot;User\/Edit&quot;,&quot;props&quot;:{&quot;user&quot;:{&quot;name&quot;:&quot;Jonathan&quot;},&quot;foo&quot;:&quot;foo value&quot;,&quot;bar&quot;:&quot;bar value&quot;},&quot;url&quot;:&quot;\/user\/123&quot;,&quot;version&quot;:&quot;123&quot;,&quot;clearHistory&quot;:false,&quot;encryptHistory&quot;:false,&quot;deepMergeProps&quot;:[&quot;foo&quot;,&quot;bar&quot;]}"></div>', $view->render());
     }
 
+    public function test_server_response_with_merge_strategies(): void
+    {
+        $request = Request::create('/user/123', 'GET');
+
+        $user = ['name' => 'Jonathan'];
+        $response = new Response(
+            'User/Edit',
+            [
+                'user' => $user,
+                'foo' => (new MergeProp('foo value', ['foo-key']))->deepMerge(),
+                'bar' => (new MergeProp('bar value', ['bar-key']))->deepMerge(),
+            ],
+            'app',
+            '123'
+        );
+        $response = $response->toResponse($request);
+        $view = $response->getOriginalContent();
+        $page = $view->getData()['page'];
+
+        $this->assertInstanceOf(BaseResponse::class, $response);
+        $this->assertInstanceOf(View::class, $view);
+
+        $this->assertSame('User/Edit', $page['component']);
+        $this->assertSame('Jonathan', $page['props']['user']['name']);
+        $this->assertSame('/user/123', $page['url']);
+        $this->assertSame('123', $page['version']);
+        $this->assertSame([
+            'foo',
+            'bar',
+        ], $page['deepMergeProps']);
+        $this->assertSame([
+            'foo.foo-key',
+            'bar.bar-key',
+        ], $page['mergeStrategies']);
+        $this->assertFalse($page['clearHistory']);
+        $this->assertFalse($page['encryptHistory']);
+        $this->assertSame('<div id="app" data-page="{&quot;component&quot;:&quot;User\/Edit&quot;,&quot;props&quot;:{&quot;user&quot;:{&quot;name&quot;:&quot;Jonathan&quot;},&quot;foo&quot;:&quot;foo value&quot;,&quot;bar&quot;:&quot;bar value&quot;},&quot;url&quot;:&quot;\/user\/123&quot;,&quot;version&quot;:&quot;123&quot;,&quot;clearHistory&quot;:false,&quot;encryptHistory&quot;:false,&quot;deepMergeProps&quot;:[&quot;foo&quot;,&quot;bar&quot;],&quot;mergeStrategies&quot;:[&quot;foo.foo-key&quot;,&quot;bar.bar-key&quot;]}"></div>', $view->render());
+    }
+
     public function test_server_response_with_defer_and_merge_props(): void
     {
         $request = Request::create('/user/123', 'GET');