BaoMa/app/Admin/Controllers/ExampleController.php

<?php

namespace App\Admin\Controllers;

use Encore\Admin\Http\Controllers\AdminController;
use Encore\Admin\Form;
use Encore\Admin\Table;
use Encore\Admin\Show;

class ExampleController extends AdminController
{
    /**
     * Title for current resource.
     *
     * @var string
     */
    protected $title = 'Example controller';

    /**
     * Make a table builder.
     *
     * @return Table
     */
    protected function table()
    {
        $table = new Table(new ExampleModel);

        $table->column('id', __('ID'))->sortable();
        $table->column('created_at', __('Created at'));
        $table->column('updated_at', __('Updated at'));

        return $table;
    }

    /**
     * Make a show builder.
     *
     * @param mixed   $id
     * @return Show
     */
    protected function detail($id)
    {
        $show = new Show(ExampleModel::findOrFail($id));

        $show->field('id', __('ID'));
        $show->field('created_at', __('Created at'));
        $show->field('updated_at', __('Updated at'));

        return $show;
    }

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        $form = new Form(new ExampleModel);

        $form->display('id', __('ID'));
        $form->display('created_at', __('Created At'));
        $form->display('updated_at', __('Updated At'));

        return $form;
    }
}