Allow co living components with discriminator attribute

Author: squrious

src/LiveComponent/src/EventListener/QueryStringInitializeSubscriber.php

@@ -15,6 +15,7 @@
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\UX\LiveComponent\Metadata\LiveComponentMetadata;
 use Symfony\UX\LiveComponent\Metadata\LiveComponentMetadataFactory;
+use Symfony\UX\LiveComponent\Util\LiveControllerAttributesCreator;
 use Symfony\UX\LiveComponent\Util\QueryStringPropsExtractor;
 use Symfony\UX\TwigComponent\Event\PreMountEvent;
 
@@ -58,7 +59,11 @@ public function onPreMount(PreMountEvent $event): void
 
         $request = $this->requestStack->getMainRequest();
 
-        $queryStringData = $this->queryStringPropsExtractor->extract($request, $metadata, $component);
+        $prefix = $data[LiveControllerAttributesCreator::URL_PREFIX_PROP_NAME]
+            ?? $data[LiveControllerAttributesCreator::KEY_PROP_NAME]
+            ?? '';
+
+        $queryStringData = $this->queryStringPropsExtractor->extract($request, $metadata, $component, $prefix);
 
         $event->setData(array_merge($data, $queryStringData));
     }

src/LiveComponent/src/Metadata/LivePropMetadata.php

@@ -55,7 +55,7 @@ public function allowsNull(): bool
     }
 
     /**
-     * @return array{'parameters': array<string,array{'property': string}>}
+     * @return array{'name': string}
      */
     public function getQueryStringMapping(): array
     {

src/LiveComponent/src/Util/LiveControllerAttributesCreator.php

@@ -39,6 +39,8 @@ class LiveControllerAttributesCreator
      */
     public const KEY_PROP_NAME = 'key';
 
+    public const URL_PREFIX_PROP_NAME = 'query-param-prefix';
+
     public function __construct(
         private LiveComponentMetadataFactory $metadataFactory,
         private LiveComponentHydrator $hydrator,
@@ -108,6 +110,28 @@ public function attributesForRendering(MountedComponent $mounted, ComponentMetad
             }
         }
 
+        $liveMetadata = $this->metadataFactory->getMetadata($mounted->getName());
+
+        if ($liveMetadata->hasQueryStringBindings()) {
+            $urlPrefix = $mountedAttributes->all()[self::URL_PREFIX_PROP_NAME]
+                ?? $mounted->getInputProps()[self::KEY_PROP_NAME]
+                ?? '';
+
+            $queryMapping = [];
+            foreach ($liveMetadata->getAllLivePropsMetadata() as $livePropMetadata) {
+                if ($mapping = $livePropMetadata->getQueryStringMapping()) {
+                    $mapping['name'] = $urlPrefix.$mapping['name'];
+                    $queryMapping[$livePropMetadata->getName()] = $mapping;
+                }
+            }
+            $attributesCollection->setQueryUrlMapping($queryMapping);
+
+            if ('' !== $urlPrefix) {
+                // So the prefix is also used when the component is re-rendered in live
+                $mountedAttributes = $mountedAttributes->defaults([self::URL_PREFIX_PROP_NAME => $urlPrefix]);
+            }
+        }
+
         $dehydratedProps = $this->dehydrateComponent(
             $mounted->getName(),
             $mounted->getComponent(),
@@ -121,17 +145,6 @@ public function attributesForRendering(MountedComponent $mounted, ComponentMetad
             );
         }
 
-        $liveMetadata = $this->metadataFactory->getMetadata($mounted->getName());
-        if ($liveMetadata->hasQueryStringBindings()) {
-            $queryMapping = [];
-            foreach ($liveMetadata->getAllLivePropsMetadata() as $livePropMetadata) {
-                if ($mapping = $livePropMetadata->getQueryStringMapping()) {
-                    $queryMapping[$livePropMetadata->getName()] = $mapping;
-                }
-            }
-            $attributesCollection->setQueryUrlMapping($queryMapping);
-        }
-
         return $attributesCollection;
     }
 

src/LiveComponent/src/Util/QueryStringPropsExtractor.php

@@ -28,7 +28,7 @@ public function __construct(private readonly LiveComponentHydrator $hydrator)
     {
     }
 
-    public function extract(Request $request, LiveComponentMetadata $metadata, object $component): array
+    public function extract(Request $request, LiveComponentMetadata $metadata, object $component, string $prefix = ''): array
     {
         $query = $request->query->all();
 
@@ -39,7 +39,7 @@ public function extract(Request $request, LiveComponentMetadata $metadata, objec
 
         foreach ($metadata->getAllLivePropsMetadata() as $livePropMetadata) {
             if ($queryStringMapping = $livePropMetadata->getQueryStringMapping()) {
-                if (null !== ($value = $query[$queryStringMapping['name']] ?? null)) {
+                if (null !== ($value = $query[$prefix.$queryStringMapping['name']] ?? null)) {
                     if (\is_array($value) && $this->isNumericIndexedArray($value)) {
                         ksort($value);
                     }

src/LiveComponent/tests/Fixtures/templates/render_multiple_components_with_url_bound_props.html.twig

@@ -0,0 +1,2 @@
+{{ component('component_with_url_bound_props', {'id': 'component1', 'query-param-prefix': 'c1_'}) }}
+{{ component('component_with_url_bound_props', {'id': 'component2', 'key': 'c2_'}) }}

src/LiveComponent/tests/Functional/EventListener/AddLiveAttributesSubscriberTest.php

@@ -153,4 +153,35 @@ public function testQueryStringMappingAttribute()
 
         $this->assertEquals($expected, $queryMapping);
     }
+
+    public function testQueryStringMappingAttributeWithMultipleComponents()
+    {
+        $crawler = $this->browser()
+            ->visit('/render-template/render_multiple_components_with_url_bound_props')
+            ->assertSuccessful()
+            ->crawler()
+        ;
+        $component1 = $crawler->filter('div[id=component1]');
+        $this->assertEquals('c1_', $component1->attr('query-param-prefix'));
+        $queryMapping = json_decode($component1->attr('data-live-query-mapping-value'), true);
+        $expected = [
+            'prop1' => ['name' => 'c1_prop1'],
+            'prop2' => ['name' => 'c1_prop2'],
+            'prop3' => ['name' => 'c1_prop3'],
+            'prop5' => ['name' => 'c1_prop5'],
+        ];
+
+        $this->assertEquals($expected, $queryMapping);
+
+        $component2 = $crawler->filter('div[id=component2]');
+        $this->assertNull($component2->attr('query-param-prefix'));
+        $queryMapping = json_decode($component2->attr('data-live-query-mapping-value'), true);
+        $expected = [
+            'prop1' => ['name' => 'c2_prop1'],
+            'prop2' => ['name' => 'c2_prop2'],
+            'prop3' => ['name' => 'c2_prop3'],
+            'prop5' => ['name' => 'c2_prop5'],
+        ];
+        $this->assertEquals($expected, $queryMapping);
+    }
 }