Make public component methods available in view (#2352)

* Make public component methods available in view

* Remove unnecessary import

src/Component.php

@@ -165,7 +165,7 @@ public function output($errors = null)
         $view->with([
             'errors' => $errors,
             '_instance' => $this,
-        ] + $this->getPublicPropertiesDefinedBySubClass());
+        ] + $this->getPublicPropertiesDefinedBySubClass() + $this->mapPublicMethodsToClosures());
 
         app('view')->share('errors', $errors);
         app('view')->share('_instance', $this);
@@ -182,6 +182,18 @@ public function output($errors = null)
         return $output;
     }
 
+    public function mapPublicMethodsToClosures()
+    {
+        return collect((new \ReflectionClass($this))->getMethods(\ReflectionMethod::IS_PUBLIC))
+            ->reject(function($method) {
+                return $method->getDeclaringClass() === self::class || Str::startsWith($method->getName(), '__');
+            })
+            ->mapWithKeys(function($method) {
+                return [$method->getName() => $method->getClosure($this)];
+            })
+            ->all();
+    }
+
     public function normalizePublicPropertiesForJavaScript()
     {
         foreach ($this->getPublicPropertiesDefinedBySubClass() as $key => $value) {

tests/Unit/PublicMethodsAreAvailableInTheViewTest.php

@@ -0,0 +1,49 @@
+<?php
+
+namespace Tests\Unit;
+
+use Livewire\Component;
+use Livewire\Livewire;
+
+class PublicMethodsAreAvailableInTheViewTest extends TestCase
+{
+    /** @test */
+    public function public_methods_is_accessible_in_view_via_this()
+    {
+        Livewire::test(PublicMethodsInViewWithoutThisStub::class)
+            ->assertSee('Your Name is Chris');
+    }
+
+    /** @test */
+    public function public_methods_are_accessible_in_view_without_this()
+    {
+        Livewire::test(PublicMethodsInViewWithoutThisStub::class)
+            ->assertSee('Your Name is Chris');
+    }
+}
+
+class PublicMethodsInViewWithThisStub extends Component
+{
+    public function render()
+    {
+        return app('view')->make('call-name-with-this');
+    }
+
+    public function name($name)
+    {
+        return 'Your Name is '.$name;
+    }
+}
+
+class PublicMethodsInViewWithoutThisStub extends Component
+{
+    public function render()
+    {
+        return app('view')->make('call-name');
+    }
+
+    public function name($name)
+    {
+        return 'Your Name is '.$name;
+    }
+}

tests/Unit/views/call-name-with-this.blade.php

@@ -0,0 +1 @@
+<span>{{ $this->name('Chris') }}</span>

tests/Unit/views/call-name.blade.php

@@ -0,0 +1 @@
+<span>{{ $name('Chris') }}</span>