redo pull request #627 with backwards compatibility

src/FormBuilder.php

@@ -1201,7 +1201,13 @@ protected function getUrlAction($options)
     protected function getRouteAction($options)
     {
         if (is_array($options)) {
-            return $this->url->route($options[0], head(array_slice($options, 1)));
+            $parameters = array_slice($options, 1);
+
+            if (array_keys($options) === [0, 1]) {
+                $parameters = head($parameters);
+            }
+
+            return $this->url->route($options[0], $parameters);
         }
 
         return $this->url->route($options);

tests/FormBuilderTest.php

@@ -4,6 +4,7 @@
 use Collective\Html\HtmlBuilder;
 use Illuminate\Contracts\View\Factory;
 use Illuminate\Http\Request;
+use Illuminate\Routing\Route;
 use Illuminate\Routing\RouteCollection;
 use Illuminate\Routing\UrlGenerator;
 use Illuminate\Support\Collection;
@@ -99,6 +100,24 @@ public function testOpeningForm()
           $form5);
     }
 
+    public function testFormRoute()
+    {
+        $routes = new RouteCollection();
+        $routes->get('user/{id}');
+        $routes->add(new Route(['GET'], 'user/{id}', ['as' => 'user.show']));
+        $this->urlGenerator->setRoutes($routes);
+
+        $form1 = $this->formBuilder->open(['method' => 'GET', 'route' => ['user.show', 1, 'foo' => 'bar']]);
+        $form2 = $this->formBuilder->open(['method' => 'GET', 'route' => ['user.show', 'id' => 2, 'foo' => 'bar']]);
+        $form3 = $this->formBuilder->open(['method' => 'GET', 'route' => ['user.show', [3, 'foo' => 'bar']]]);
+        $form4 = $this->formBuilder->open(['method' => 'GET', 'route' => ['user.show', ['id' => 4, 'foo' => 'bar']]]);
+
+        $this->assertEquals('<form method="GET" action="http://localhost/user/1?foo=bar" accept-charset="UTF-8">', $form1);
+        $this->assertEquals('<form method="GET" action="http://localhost/user/2?foo=bar" accept-charset="UTF-8">', $form2);
+        $this->assertEquals('<form method="GET" action="http://localhost/user/3?foo=bar" accept-charset="UTF-8">', $form3);
+        $this->assertEquals('<form method="GET" action="http://localhost/user/4?foo=bar" accept-charset="UTF-8">', $form4);
+    }
+
     public function testClosingForm()
     {
         $this->assertEquals('</form>', $this->formBuilder->close());