Some improvements, also edit screen.

app/Http/Controllers/Transaction/EditController.php

@@ -0,0 +1,81 @@
+<?php
+/**
+ * EditController.php
+ * Copyright (c) 2019 thegrumpydictator@gmail.com
+ *
+ * This file is part of Firefly III.
+ *
+ * Firefly III is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Firefly III is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Firefly III. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace FireflyIII\Http\Controllers\Transaction;
+
+
+use FireflyIII\Http\Controllers\Controller;
+use FireflyIII\Models\TransactionGroup;
+use FireflyIII\Repositories\Account\AccountRepositoryInterface;
+
+/**
+ * Class EditController
+ */
+class EditController extends Controller
+{
+
+    /**
+     * SingleController constructor.
+     */
+    public function __construct()
+    {
+        parent::__construct();
+
+        $maxFileSize = app('steam')->phpBytes(ini_get('upload_max_filesize'));
+        $maxPostSize = app('steam')->phpBytes(ini_get('post_max_size'));
+        $uploadSize  = min($maxFileSize, $maxPostSize);
+
+
+        app('view')->share('uploadSize', $uploadSize);
+
+        // some useful repositories:
+        $this->middleware(
+            function ($request, $next) {
+
+                app('view')->share('title', (string)trans('firefly.transactions'));
+                app('view')->share('mainTitleIcon', 'fa-repeat');
+
+                return $next($request);
+            }
+        );
+    }
+
+
+    /**
+     * @param TransactionGroup $transactionGroup
+     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
+     */
+    public function edit(TransactionGroup $transactionGroup)
+    {
+        /** @var AccountRepositoryInterface $repository */
+        $repository           = app(AccountRepositoryInterface::class);
+        $allowedOpposingTypes = config('firefly.allowed_opposing_types');
+        $accountToTypes       = config('firefly.account_to_transaction');
+        $defaultCurrency      = app('amount')->getDefaultCurrency();
+        $cash                 = $repository->getCashAccount();
+
+        return view('transactions.edit', compact('cash', 'transactionGroup', 'allowedOpposingTypes', 'accountToTypes', 'defaultCurrency'
+
+        ));
+
+    }
+
+}