jiaming/app/Admin/Controllers/AnnouncementController.php

<?php

namespace App\Admin\Controllers;

use App\Models\Announcement;
use Dcat\Admin\Form;
use Dcat\Admin\Grid;
use Dcat\Admin\Show;
use Dcat\Admin\Http\Controllers\AdminController;

class AnnouncementController extends AdminController
{
    /**
     * Make a grid builder.
     *
     * @return Grid
     */
    protected function grid()
    {
        return Grid::make(new Announcement(), function (Grid $grid) {
           
            $grid->column('garden_name');
            $grid->column('content');
            $grid->column('created_at');
            $grid->disableEditButton();
            $grid->disableCreateButton();
            $grid->filter(function (Grid\Filter $filter) {
                $filter->panel();
                $filter->date('created_at')->datetime()->width(4);
            });
        });
    }

    /**
     * Make a show builder.
     *
     * @param mixed $id
     *
     * @return Show
     */
    protected function detail($id)
    {
        return Show::make($id, new Announcement(), function (Show $show) {

            //$show->field('garden_name');
            $show->field('title');
            $show->field('content');
            $show->field('created_at');

        });
    }

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        return Form::make(new Announcement(), function (Form $form) {
            
            $form->text('garden_name');
            $form->text('content');
        
        });
    }
}