core/app/Handlers/Handler.php

<?php
namespace App\Handlers;

use App\Enumerations\ModuleNamesWithIds;
use App\Enumerations\TemplatePathsHumanReadableRootOnly;
use App\Enumerations\WidgetTypes;
use App\Handlers\Contracts\AppHandler;
use App\Models\User;

/**
 * Class Handler
 *
 * Handler is a class which handles module-specific behaviour which cannot be done by module itself, resp. cannot be
 * done by some abstract magic.
 *
 * @package App\Handlers
 */
abstract class Handler implements AppHandler
{
    public static function getHistoryHandler()
    {
        return History::class;
    }

    public static function getExtendedFormSections()
    {
        return [
            'basicInfo'   => trans('admin/contents.basicInfo'),
            'meta'        => trans('admin/contents.metaOptions'),
            'publication' => trans('admin/contents.publicationOptions'),
            'appearance'  => trans('admin/contents.appearance')
        ];
    }

    public static function getExtendedFormInputsCreate()
    {
        return [
            'basicInfo'   => 'admin.content.formParts.basicInformation',
            'meta'        => 'admin.content.formParts.metaInformation',
            'publication' => 'admin.content.formParts.publicationSetup',
            'appearance'  => 'admin.content.formParts.appearance',
        ];
    }

    public static function getExtendedFormInputsEdit()
    {
        return self::getExtendedFormInputsCreate();
    }

    /**
     * Register admin menu (or multiple ones)
     *
     * This cannot be in ServiceProvider because Session is started at middleware. And ServiceProvider is called before
     * starting any middleware..
     *
     * @param User $user model of logged user
     */
    public static function registerAdminMenu(User $user)
    {
        $menu = \Menu::instance('mainMenu');
        if (!is_null($menu)) {
            // menus were already defined
            return;
        }

        // create instance of main menu
        \Menu::create('mainMenu', function ($menu) {
//            $menu->route('admin.dashboard', trans('admin/mainMenu.dashboard'), [], 10, ['icon' => 'fa fa-dashboard']);
            $menu->dropdown(trans('admin/mainMenu.userManagement'), function ($sub) {
                $sub->route('users.new', trans('admin/mainMenu.newUser'), [], 10, ['icon' => 'fa fa-user-plus']);
                $sub->route('users.detail', trans('admin/mainMenu.userDetail'), [], 20, ['icon' => 'fa fa-user']);
                $sub->route('users.overview', trans('admin/mainMenu.usersOverview'), [], 30, ['icon' => 'fa fa-users']);
            }, 20, ['icon' => 'fa fa-users']);
            $menu->dropdown(trans('admin/mainMenu.contentPages'), function ($sub) {
                $modules = ModuleNamesWithIds::getWithTranslations();

                if (!empty($modules)) {
                    $sub->dropdown(trans('admin/mainMenu.newContentPage'), function ($sub) use ($modules) {
                        $i = 1;
                        foreach ($modules as $module => $name) {
                            $sub->route('content.new', trans($name), ['moduleId' => $module], $i++);
                        }
                    }, 10, ['icon' => 'fa fa-plus']);
                }

                $sub->route('content.overview', trans('admin/mainMenu.contentPageOverview'), [], 20, ['icon' => 'fa fa-list']);
            }, 15, ['icon' => 'fa fa-database']);
            $menu->route('upload.overview', trans('admin/mainMenu.fileManager'), [], 30, ['icon' => 'fa fa-folder']);
            $menu->dropdown(trans('admin/mainMenu.widgets'), function ($sub) {
                // create list of all widget types
                $widgets = WidgetTypes::getWithTranslations();

                if (!empty($widgets)) {
                    $sub->dropdown(trans('admin/mainMenu.newWidget'), function ($sub) use ($widgets) {
                        $i = 1;
                        foreach ($widgets as $type => $name) {
                            $sub->route('widgets.new', $name, ['type' => $type], $i++);
                        }
                    }, 10, ['icon' => 'fa fa-plus']);
                }

                $sub->route('widgets.overview', trans('admin/mainMenu.widgetsOverview'), [], 20, ['icon' => 'fa fa-list']);

                // menu for widget areas
                $sub->dropdown(trans('admin/mainMenu.widgetAreas'), function ($sub) {
                    $sub->route('widgetareas.new', trans('admin/mainMenu.newWidgetArea'), [], 1, ['icon' => 'fa fa-plus']);
                    $sub->route('widgetareas.overview', trans('admin/mainMenu.widgetAreaOverview'), [], 2, ['icon' => 'fa fa-list']);
                }, 50, ['icon' => 'fa fa-object-group']);
            }, 28, ['icon' => 'fa fa-gears']);

            $templatePaths = TemplatePathsHumanReadableRootOnly::getWithTranslations();

            if (!empty($templatePaths)) {
                $menu->dropdown(trans('admin/mainMenu.templates'), function ($sub) use ($templatePaths) {
                    $i = 1;
                    foreach ($templatePaths as $id => $name) {
                        $sub->route('templates.overview', $name, ['id' => $id], $i++);
                    }
                }, 29, ['icon' => 'fa fa-folder-open']);
            }
//            $menu->dropdown(trans('admin/mainMenu.customFields'), function ($sub) {
//                $sub->route('customfields.new', trans('admin/mainMenu.customFieldsNew'), [], 10, ['icon' => 'fa fa-code']);
//                $sub->route('customfields.overview', trans('admin/mainMenu.customFieldsOverview'), [], 50, ['icon' => 'fa fa-code-fork']);
//            }, 30, ['icon' => 'fa fa-code']);
            $menu->route('log.overview', trans('admin/mainMenu.actionLog'), [], 40, ['icon' => 'fa fa-history']);
            $menu->route('settings.overview', trans('admin/mainMenu.settings'), [], 50, ['icon' => 'fa fa-gear']);
        });

        // order

        // create menu with user profile
        \Menu::create('profileMenu', function ($menu) {
            $menu->route('users.detail', trans('admin/userManagement.profile'));
            $menu->route('logout', trans('admin/common.logout'));
        });
    }
}