execute parent conversions when needed

src/Models/Media.php

@@ -249,10 +249,27 @@ public function dispatchConversion(string $conversion): ?PendingDispatch
         return null;
     }
 
+    public function getOrExecuteConversion(string $name): ?MediaConversion
+    {
+        if ($conversion = $this->getConversion($name)) {
+            return $conversion;
+        }
+
+        return $this->executeConversion($name);
+    }
+
     public function executeConversion(string $conversion): ?MediaConversion
     {
         if ($definition = $this->getConversionDefinition($conversion)) {
-            return $definition->execute($this, $this->getParentConversion($conversion));
+
+            if (str_contains($conversion, '.')) {
+                $parent = $this->getOrExecuteConversion(str($conversion)->beforeLast('.'));
+            } else {
+                $parent = null;
+            }
+
+            return $definition->execute($this, $parent);
+
         }
 
         return null;

tests/Feature/HasMediaTest.php

@@ -147,6 +147,27 @@
 
 });
 
+it('generates non existing parents conversions when executing nested conversion', function () {
+    Storage::fake('media');
+    $model = new Test;
+    $model->save();
+
+    $media = $model->addMedia(
+        file: $this->getTestFile('videos/horizontal.mp4'),
+        collectionName: 'conversions-delayed',
+        disk: 'media'
+    );
+
+    expect($media->conversions)->toHaveLength(0);
+
+    $media->executeConversion('poster.360');
+
+    expect($media->conversions)->toHaveLength(2);
+
+    expect($media->getConversion('poster'))->not->toBe(null);
+    expect($media->getConversion('poster.360'))->not->toBe(null);
+});
+
 it('deletes old media when adding to single collection', function () {
     Storage::fake('media');
     $model = new Test;

tests/Models/Test.php

@@ -94,6 +94,27 @@ public function registerMediaCollections(): Arrayable|iterable|null
                     ),
                 ]
             ),
+            new MediaCollection(
+                name: 'conversions-delayed',
+                single: false,
+                public: false,
+                conversions: [
+                    new MediaConversionPoster(
+                        name: 'poster',
+                        queued: false,
+                        immediate: false,
+                        conversions: [
+                            new MediaConversionImage(
+                                name: '360',
+                                width: 360,
+                                queued: false,
+                                immediate: true,
+                            ),
+                        ]
+                    ),
+
+                ]
+            ),
         ];
     }
 }