[6.x] Add configurable @blueprint template base path

config/system.php

@@ -269,4 +269,21 @@
 
     'layout' => env('STATAMIC_LAYOUT', 'layout'),
 
+    /*
+    |--------------------------------------------------------------------------
+    | Blueprint Templates
+    |--------------------------------------------------------------------------
+    |
+    | When an entry's template is set to `@blueprint`, Statamic will look for
+    | a view named `{collection}.{blueprint}`. You may override this logic
+    | on a per-collection basis here.
+    |
+    | https://statamic.dev/content-modeling/collections#templates
+    |
+    */
+
+    'blueprint_templates' => [
+        //
+    ],
+
 ];

src/Entries/Entry.php

@@ -583,7 +583,10 @@ public function template($template = null)
 
     protected function inferTemplateFromBlueprint()
     {
-        $template = $this->collection()->handle().'.'.$this->blueprint();
+        $handle = $this->collection()->handle();
+        $prefix = config('statamic.system.blueprint_templates.'.$handle, $handle);
+
+        $template = $prefix.'.'.$this->blueprint();
 
         $slugifiedTemplate = str_replace('_', '-', $template);
 

tests/Data/Entries/EntryTest.php

@@ -2048,6 +2048,35 @@ public function it_gets_and_sets_an_inferred_template_from_blueprint()
         $this->assertEquals('articles.custom', $entry->template());
     }
 
+    #[Test]
+    public function it_respects_custom_blueprint_template_path_per_collection()
+    {
+        config(['statamic.system.blueprint_templates' => [
+            'articles' => 'custom.path',
+        ]]);
+
+        $articles = tap(Collection::make('articles')->template('@blueprint'))->save();
+        $pages = tap(Collection::make('pages')->template('@blueprint'))->save();
+        $blueprint = tap(Blueprint::make('standard_article')->setNamespace('collections.articles'))->save();
+
+        $articleEntry = Entry::make('test')->collection($articles)->blueprint($blueprint->handle());
+        $pageEntry = Entry::make('test')->collection($pages)->blueprint($blueprint->handle());
+
+        // mapped collection uses the mapped prefix instead of the collection handle
+        $this->assertEquals('custom.path.standard_article', $articleEntry->template());
+
+        // unmapped collection still uses its handle as the prefix
+        $this->assertEquals('pages.standard_article', $pageEntry->template());
+
+        // mapped collection uses slugified prefix when that template exists
+        View::shouldReceive('exists')->with('custom.path.standard-article')->andReturn(true);
+        $this->assertEquals('custom.path.standard-article', $articleEntry->template());
+
+        // entry level template still overrides @blueprint
+        $articleEntry->template('articles.custom');
+        $this->assertEquals('articles.custom', $articleEntry->template());
+    }
+
     #[Test]
     public function it_gets_and_sets_the_layout()
     {