Use content hash as comment key

Author: nathanheffley

resources/views/comment-list.blade.php

@@ -16,7 +16,7 @@ class="w-8 h-8 text-gray-400 dark:text-gray-500"
 
     @foreach ($this->comments as $comment)
         <livewire:commentions::comment
-            :key="'comment-' . $comment->getId()"
+            :key="$comment->getContentHash()"
             :comment="$comment"
             :mentionables="$mentionables"
         />

src/Comment.php

@@ -173,6 +173,14 @@ public function getLabel(): ?string
         return null;
     }
 
+    public function getContentHash(): string
+    {
+        return md5(json_encode([
+            'body' => $this->body,
+            'reactions' => $this->reactions->pluck('id'),
+        ]));
+    }
+
     protected static function newFactory()
     {
         return CommentFactory::new();

src/Contracts/RenderableComment.php

@@ -21,4 +21,6 @@ public function getCreatedAt(): \DateTime|\Carbon\Carbon;
     public function getUpdatedAt(): \DateTime|\Carbon\Carbon;
 
     public function getLabel(): ?string;
+
+    public function getContentHash(): string;
 }

src/RenderableComment.php

@@ -94,6 +94,11 @@ public function getLabel(): ?string
         return $this->label;
     }
 
+    public function getContentHash(): string
+    {
+        return "comment-$this->id";
+    }
+
     public function toLivewire()
     {
         return [