Registering customLabel macro once Form resolved

src/Kris/LaravelFormBuilder/FormBuilderServiceProvider.php

@@ -7,8 +7,8 @@
 use Collective\Html\HtmlBuilder;
 use Illuminate\Support\ServiceProvider;
 use InvalidArgumentException;
-use Kris\LaravelFormBuilder\Traits\ValidatesWhenResolved;
 use Kris\LaravelFormBuilder\Form;
+use Kris\LaravelFormBuilder\Traits\ValidatesWhenResolved;
 
 class FormBuilderServiceProvider extends ServiceProvider
 {
@@ -105,15 +105,15 @@ public function boot()
             __DIR__ . '/../../config/config.php' => config_path('laravel-form-builder.php')
         ]);
 
-        $form = $this->app[static::FORM_ABSTRACT];
-
-        $form->macro('customLabel', function($name, $value, $options = [], $escape_html = true) use ($form) {
-            if (isset($options['for']) && $for = $options['for']) {
-                unset($options['for']);
-                return $form->label($for, $value, $options, $escape_html);
-            }
+        $this->app->afterResolving(Form::class, function ($form) {
+            $form->macro('customLabel', function($name, $value, $options = [], $escape_html = true) use ($form) {
+                if (isset($options['for']) && $for = $options['for']) {
+                    unset($options['for']);
+                    return $form->label($for, $value, $options, $escape_html);
+                }
 
-            return $form->label($name, $value, $options, $escape_html);
+                return $form->label($name, $value, $options, $escape_html);
+            });
         });
     }