Recreated the JSON controller to fix auto-complete forms.

app/controllers/JsonController.php

@@ -0,0 +1,65 @@
+<?php
+
+/**
+ * Class JsonController
+ *
+ */
+class JsonController extends BaseController
+{
+
+    /**
+     * Returns a list of categories.
+     *
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function categories()
+    {
+        /** @var \FireflyIII\Database\Category $categories */
+        $categories = App::make('FireflyIII\Database\Category');
+        $list = $categories->get();
+        $return = [];
+        foreach ($list as $entry) {
+            $return[] = $entry->name;
+        }
+
+        return Response::json($return);
+
+
+    }
+
+    /**
+     * Returns a JSON list of all beneficiaries.
+     *
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function expenseAccounts()
+    {
+        /** @var \FireflyIII\Database\Account $accounts */
+        $accounts = App::make('FireflyIII\Database\Account');
+        $list = $accounts->getExpenseAccounts();
+        $return = [];
+        foreach ($list as $entry) {
+            $return[] = $entry->name;
+        }
+
+        return Response::json($return);
+
+    }
+
+    /**
+     * @return \Illuminate\Http\JsonResponse
+     */
+    public function revenueAccounts()
+    {
+        /** @var \FireflyIII\Database\Account $accounts */
+        $accounts = App::make('FireflyIII\Database\Account');
+        $list = $accounts->getRevenueAccounts();
+        $return = [];
+        foreach ($list as $entry) {
+            $return[] = $entry->name;
+        }
+
+        return Response::json($return);
+
+    }
+}

app/routes.php

@@ -174,6 +174,12 @@ Route::group(
         Route::get('/', ['uses' => 'HomeController@index', 'as' => 'index']);
         Route::get('/flush', ['uses' => 'HomeController@flush', 'as' => 'flush']); # even though nothing is cached.
 
+        // JSON controller
+        Route::get('/json/expense-accounts', ['uses' => 'JsonController@expenseAccounts', 'as' => 'json.expense-accounts']);
+        Route::get('/json/revenue-accounts', ['uses' => 'JsonController@revenueAccounts', 'as' => 'json.revenue-accounts']);
+        Route::get('/json/categories', ['uses' => 'JsonController@categories', 'as' => 'json.categories']);
+
+
         // piggy bank controller
         Route::get('/piggybanks', ['uses' => 'PiggybankController@index', 'as' => 'piggybanks.index']);
         Route::get('/piggybanks/add/{piggybank}', ['uses' => 'PiggybankController@add']); # add money