User.php

<?php

declare (strict_types = 1);

namespace App\Nova;

use Auth;
use Illuminate\Http\Request;
use Illuminate\Validation\Rules;
use Laravel\Nova\Fields\Password;
use Laravel\Nova\Fields\Select;
use Laravel\Nova\Fields\Text;
use Laravel\Nova\Http\Requests\NovaRequest;

class User extends Resource
{

    public static function authorizedToCreate(Request $request)
    {
        if (Auth::user()) {
            return (Auth::user()->role === 'admin') ? true : false;
        }
        return false;
    }

    public static $model = \App\Models\User::class;

    public static $title = 'email';

    public static $search = [
        'name', 'email',
    ];

    public function fields(NovaRequest $request)
    {
        return [
            Text::make('Name')
                ->sortable()
                ->rules('required', 'max:255'),

            Text::make('Email')
                ->sortable()
                ->rules('required', 'email', 'max:254')
                ->creationRules('unique:users,email')
                ->updateRules('unique:users,email,{{resourceId}}'),

            Password::make('Password')
                ->onlyOnForms()
                ->creationRules('required', Rules\Password::defaults())
                ->updateRules('nullable', Rules\Password::defaults()),

            Select::make('Role')
                ->options([
                    'admin' => 'admin',
                    'analyst' => 'analyst',
                ])
                ->creationRules('required')
                ->updateRules('required'),
        ];
    }

    public function cards(NovaRequest $request)
    {
        return [];
    }

    public function filters(NovaRequest $request)
    {
        return [];
    }

    public function lenses(NovaRequest $request)
    {
        return [];
    }

    public function actions(NovaRequest $request)
    {
        return [];
    }
}