feat: Version::isLatest()

Author: overtrue

src/Diff.php

@@ -77,7 +77,7 @@ protected function getContents(bool $stripTags = false): array
             // all versions before this version.
             $versionsBeforeThis = $this->newVersion->previousVersions()->get();
 
-            foreach ($versionsBeforeThis->reverse() as $version) {  // DIFF show previous and current updated data  
+            foreach ($versionsBeforeThis->reverse() as $version) {  // DIFF show previous and current updated data
                 if (! empty($version->contents)) {
                     $oldContents = array_merge($oldContents, $version->contents);
                 }

src/Version.php

@@ -181,6 +181,11 @@ public function nextVersion(): ?static
             ->first();
     }
 
+    public function isLatest(): bool
+    {
+        return $this->getKey() === $this->versionable->latestVersion()->getKey();
+    }
+
     public function diff(?Version $toVersion = null, array $differOptions = [], array $renderOptions = []): Diff
     {
         if (! $toVersion) {

tests/FeatureTest.php

@@ -194,6 +194,18 @@ public function user_can_get_previous_version()
         $this->assertNull($post->latestVersion->previousVersion()->previousVersion()->previousVersion());
     }
 
+    public function user_can_detect_whether_the_version_is_the_latest_version(): void
+    {
+        $post = Post::create(['title' => 'version1', 'content' => 'version1 content']);
+        $post->update(['title' => 'version2']);
+        $post->update(['title' => 'version3']);
+
+        $post->refresh();
+
+        $this->assertTrue($post->latestVersion->isLatest());
+        $this->assertFalse($post->latestVersion->previousVersion()->isLatest());
+    }
+
     /**
      * @test
      */