Fix/Feature:

- allow ImplicitRouteBinding to match compound name ('foo_bar') route parameters to method/function naming ('fooBar')

Author: ralphschindler

src/Illuminate/Routing/ImplicitRouteBinding.php

@@ -20,17 +20,21 @@ public static function resolveForRoute($container, $route)
         foreach ($route->signatureParameters(Model::class) as $parameter) {
             $class = $parameter->getClass();
 
-            if (array_key_exists($parameter->name, $parameters) &&
-                ! $route->parameter($parameter->name) instanceof Model) {
-                $method = $parameter->isDefaultValueAvailable() ? 'first' : 'firstOrFail';
-
+            if (! $route->parameter($parameter->name) instanceof Model) {
                 $model = $container->make($class->name);
 
-                $route->setParameter(
-                    $parameter->name, $model->where(
-                        $model->getRouteKeyName(), $parameters[$parameter->name]
-                    )->{$method}()
-                );
+                $parameterName = array_key_exists($parameter->name, $parameters) ? $parameter->name : null;
+
+                // check if parameter name used was camelized in routed callback method
+                if (!$parameterName) {
+                    $snakeParamName = snake_case($parameter->name);
+                    $parameterName = array_key_exists($snakeParamName, $parameters) ? $snakeParamName : null;
+                }
+
+                if ($parameterName) {
+                    $value = $model->where($model->getRouteKeyName(), $parameters[$parameterName])->firstOrFail();
+                    $route->setParameter($parameterName, $value);
+                }
             }
         }
     }

tests/Routing/RoutingRouteTest.php

@@ -700,6 +700,13 @@ public function testModelBindingWithBindingClosure()
         $this->assertEquals('tayloralt', $router->dispatch(Request::create('foo/TAYLOR', 'GET'))->getContent());
     }
 
+    public function testModelBindingWithCompoundParameterName()
+    {
+        $router = $this->getRouter();
+        $router->resource('foo-bar', 'Illuminate\Tests\Routing\RouteTestResourceControllerWithModelParameter', ['middleware' => SubstituteBindings::class]);
+        $this->assertEquals('12345', $router->dispatch(Request::create('foo-bar/12345', 'GET'))->getContent());
+    }
+
     public function testModelBindingThroughIOC()
     {
         $container = new Container;
@@ -1275,6 +1282,14 @@ public function returnParameter($bar = '')
     }
 }
 
+class RouteTestResourceControllerWithModelParameter extends Controller
+{
+    public function show(RoutingTestUserModel $fooBar)
+    {
+        return $fooBar->value;
+    }
+}
+
 class RouteTestClosureMiddlewareController extends Controller
 {
     public function __construct()