3. /config/backpack/base.php

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | Look & feel customizations
    |--------------------------------------------------------------------------
    |
    | Make it yours.
    |
     */

    // Project name. Shown in the breadcrumbs and a few other places.
    'project_name'               => 'Backpack',

    // Menu logos
    'logo_lg'                    => '<b>Back</b>pack',
    'logo_mini'                  => '<b>B</b>p',

    // Developer or company name. Shown in footer.
    'developer_name'             => 'Cristian Tabacitu',

    // Developer website. Link in footer.
    'developer_link'             => 'http://tabacitu.ro',

    // Show powered by Laravel Backpack in the footer?
    'show_powered_by'            => true,

    // The AdminLTE skin. Affects menu color and primary/secondary colors used throughout the application.
    'skin'                       => 'skin-purple',
    // Options: skin-black, skin-blue, skin-purple, skin-red, skin-yellow, skin-green, skin-blue-light, skin-black-light, skin-purple-light, skin-green-light, skin-red-light, skin-yellow-light

    // Date & Datetime Format Syntax: https://github.com/jenssegers/date#usage
    // (same as Carbon)
    'default_date_format'        => 'j F Y',
    'default_datetime_format'    => 'j F Y H:i',

    /*
    |--------------------------------------------------------------------------
    | Registration Open
    |--------------------------------------------------------------------------
    |
    | Choose whether new users/admins are allowed to register.
    | This will show up the Register button in the menu and allow access to the
    | Register functions in AuthController.
    |
    | By default the registration is open only on localhost.
     */

    'registration_open'          => env('BACKPACK_REGISTRATION_OPEN', env('APP_ENV') === 'local'),

    /*
    |--------------------------------------------------------------------------
    | Routing
    |--------------------------------------------------------------------------
     */

    // The prefix used in all base routes (the 'admin' in admin/dashboard)
    // You can make sure all your URLs use this prefix by using the backpack_url() helper instead of url()
    'route_prefix'               => 'admin',

    // Set this to false if you would like to use your own AuthController and PasswordController
    // (you then need to setup your auth routes manually in your routes.php file)
    'setup_auth_routes'          => true,

    // Set this to false if you would like to skip adding the dashboard routes
    // (you then need to overwrite the login route on your AuthController)
    'setup_dashboard_routes'     => true,

    // Set this to false if you would like to skip adding "my account" routes
    // (you then need to manually define the routes in your web.php)
    'setup_my_account_routes'    => true,

    /*
    |--------------------------------------------------------------------------
    | Authentication
    |--------------------------------------------------------------------------
     */

    // Fully qualified namespace of the User model
    'user_model_fqn'             => \Backpack\Base\app\Models\BackpackUser::class,

    // The classes for the middleware to check if the visitor is an admin
    // Can be a single class or an array of clases
    'middleware_class'           => [
        \Backpack\Base\app\Http\Middleware\CheckIfAdmin::class,
        \App\Http\Middleware\AdminMiddleware::class,
    ],

    // Alias for that middleware
    'middleware_key'             => 'admin',
    // Note: It's recommended to use the backpack_middleware() helper everywhere, which pulls this key for you.

    // Username column for authentication
    // The Backpack default is the same as the Laravel default (email)
    // If you need to switch to username, you also need to create that column in your db
    'authentication_column'      => 'email',
    'authentication_column_name' => 'Email',

    // The guard that protects the Backpack admin panel.
    // If null, the config.auth.defaults.guard value will be used.
    'guard'                      => null,

    // The password reset configuration for Backpack.
    // If null, the config.auth.defaults.passwords value will be used.
    'passwords'                  => null,

    // What kind of avatar will you like to show to the user?
    // Default: gravatar (automatically use the gravatar for his email)
    // Other options:
    // - placehold (generic image with his first letter)
    // - example_method_name (specify the method on the User model that returns the URL)
    'avatar_type'                => 'gravatar',

    /*
    |--------------------------------------------------------------------------
    | File System
    |--------------------------------------------------------------------------
     */

    // Backpack\Base sets up its own filesystem disk, just like you would by
    // adding an entry to your config/filesystems.php. It points to the root
    // of your project and it's used throughout all Backpack packages.
    //
    // You can rename this disk here. Default: root
    'root_disk_name'             => 'root',

    /*
    |--------------------------------------------------------------------------
    | License Code
    |--------------------------------------------------------------------------
    |
    | If you, your employer or your client make money by using Backpack, you need
    | to purchase a license. A license code will be provided after purchase,
    | which you can put here or in your ENV file in staging & production.
    |
    | More info and payment form on:
    | https://www.backpackforlaravel.com
    |
     */

    'license_code'               => env('BACKPACK_LICENSE', false),
];