New middleware.

app/Http/Kernel.php

@@ -3,6 +3,7 @@
 namespace FireflyIII\Http;
 
 use FireflyIII\Http\Middleware\Authenticate;
+use FireflyIII\Http\Middleware\Binder;
 use FireflyIII\Http\Middleware\EncryptCookies;
 use FireflyIII\Http\Middleware\Range;
 use FireflyIII\Http\Middleware\RedirectIfAuthenticated;
@@ -64,6 +65,7 @@ class Kernel extends HttpKernel
                 VerifyCsrfToken::class,
                 Authenticate::class,
                 Range::class,
+                Binder::class,
             ],
 
             'api' => [

app/Http/Middleware/Binder.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace FireflyIII\Http\Middleware;
+
+use Closure;
+use FireflyIII\Support\Domain;
+
+class Binder
+{
+    protected $binders = [];
+
+    public function __construct()
+    {
+        $this->binders = Domain::getBindables();
+    }
+
+    /**
+     * Handle an incoming request.
+     *
+     * @param  \Illuminate\Http\Request $request
+     * @param  \Closure                 $next
+     *
+     * @return mixed
+     */
+    public function handle($request, Closure $next)
+    {
+        foreach ($request->route()->parameters() as $key => $value) {
+            if (isset($this->binders[$key])) {
+                $boundObject = $this->performBinding($key, $value, $request->route());
+                $request->route()->setParameter($key, $boundObject);
+            }
+        }
+
+        return $next($request);
+
+        //return $next($request);
+    }
+
+    /**
+     * @param $key
+     * @param $value
+     * @param $route
+     *
+     * @return mixed
+     */
+    private function performBinding($key, $value, $route)
+    {
+        return $this->binders[$key]::routeBinder($value, $route);
+    }
+}