Give bills groups too.

app/Http/Controllers/Bill/DeleteController.php

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+<?php
+
+/**
+ * DeleteController.php
+ * Copyright (c) 2020 james@firefly-iii.org
+ *
+ * This file is part of Firefly III (https://github.com/firefly-iii).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+declare(strict_types=1);
+
+namespace FireflyIII\Http\Controllers\Bill;
+
+
+use FireflyIII\Http\Controllers\Controller;
+use FireflyIII\Models\Bill;
+use FireflyIII\Repositories\Bill\BillRepositoryInterface;
+use Illuminate\Contracts\View\Factory;
+use Illuminate\Http\RedirectResponse;
+use Illuminate\Http\Request;
+use Illuminate\Routing\Redirector;
+use Illuminate\View\View;
+
+/**
+ * Class DeleteController
+ */
+class DeleteController extends Controller
+{
+    private BillRepositoryInterface $repository;
+
+    /**
+     * BillController constructor.
+     *
+     * @codeCoverageIgnore
+     */
+    public function __construct()
+    {
+        parent::__construct();
+
+        app('view')->share('showBudget', true);
+
+        $this->middleware(
+            function ($request, $next) {
+                app('view')->share('title', (string) trans('firefly.bills'));
+                app('view')->share('mainTitleIcon', 'fa-calendar-o');
+                $this->repository = app(BillRepositoryInterface::class);
+
+                return $next($request);
+            }
+        );
+    }
+    /**
+     * Delete a bill.
+     *
+     * @param Bill $bill
+     *
+     * @return Factory|View
+     */
+    public function delete(Bill $bill)
+    {
+        // put previous url in session
+        $this->rememberPreviousUri('bills.delete.uri');
+        $subTitle = (string) trans('firefly.delete_bill', ['name' => $bill->name]);
+
+        return view('bills.delete', compact('bill', 'subTitle'));
+    }
+
+    /**
+     * Destroy a bill.
+     *
+     * @param Request $request
+     * @param Bill    $bill
+     *
+     * @return RedirectResponse|Redirector
+     */
+    public function destroy(Request $request, Bill $bill)
+    {
+        $name = $bill->name;
+        $this->repository->destroy($bill);
+
+        $request->session()->flash('success', (string) trans('firefly.deleted_bill', ['name' => $name]));
+        app('preferences')->mark();
+
+        return redirect($this->getPreviousUri('bills.delete.uri'));
+    }
+}