HNWelcomeSystemAdminDcat/app/Admin/Controllers/SpecialityController.php

<?php

namespace App\Admin\Controllers;

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

class SpecialityController extends AdminController
{
    /**
     * Make a grid builder.
     *
     * @return Grid
     */
    protected function grid()
    {
        return Grid::make(new Speciality(), function (Grid $grid) {
            //开启边框模式
            $grid->withBorder();
            // 开启字段选择器功能
            $grid->showColumnSelector();

            $grid->column('id')->sortable();
            $grid->column('secondary_college_id')->display(function () {
                $secondary_college_id = $this->secondary_college_id;
                if (!empty($secondary_college_id)) {
                    $name = SecondaryCollege::query()->where("id", $secondary_college_id)->first("name");
                    if (!empty($name)) {
                        return $name->name;
                    }
                }
            })->help("二级学院显示为空时则对应的二级学院信息可能已被删除");

            $grid->column('speciality_name');
            $grid->column('status')->select([1=>"正常", 2=>"禁用"]);
            $grid->column('create_time')->display(function (){
                if(!empty($this->create_time)){
                    return date("Y-m-d H:i:s", $this->create_time);
                }
            })->sortable();
            $grid->column('update_time')->display(function (){
                if(!empty($this->update_time)){
                    return date("Y-m-d H:i:s", $this->update_time);
                }
            });


            $grid->filter(function (Grid\Filter $filter) {
                $filter->equal('secondary_college_id')->select(function (){
                    return SecondaryCollege::query()->pluck("name as value", "id");
                });
                $filter->equal('status')->select([1 => "正常", 2 => "禁用"]);
            });
            // 禁用删除按钮
            $grid->disableDeleteButton();
            //禁用批量操作按钮
            $grid->disableBatchDelete();

            // 禁用详情按钮
            $grid->disableViewButton();
        });
    }

    /**
     * Make a show builder.
     *
     * @param mixed $id
     *
     * @return Show
     */
    protected function detail($id)
    {
        return Show::make($id, new Speciality(), function (Show $show) {
            $show->field('id');
            $show->field('speciality_name');
            $show->field('status');
            $show->field('create_time');
            $show->field('update_time');
            $show->field('secondary_college_id');
        });
    }

    /**
     * Make a form builder.
     *
     * @return Form
     */
    protected function form()
    {
        return Form::make(new Speciality(), function (Form $form) {
            $form->display('id');
            $form->select('secondary_college_id')->options(function(){
                return SecondaryCollege::query()->pluck("name as value", "id");
            })->required();
            $form->text('speciality_name')->required();
            $form->select('status', '状态')->options([1 => '正常', 2 => '禁用'])->required();

            $form->hidden("create_time");
            $form->hidden("update_time");

            // 去除删除按钮
            $form->disableDeleteButton();
            // 去除跳转详情按钮
            $form->disableViewButton();

            $form->footer(function ($footer) {

                // 去掉`查看`checkbox
                $footer->disableViewCheck();

                // 去掉`继续编辑`checkbox
                $footer->disableEditingCheck();

                // 去掉`继续创建`checkbox
                $footer->disableCreatingCheck();

            });

            $form->saving(function (Form $form) {

                if ($form->isCreating()) {
                    $form->create_time =time();
                    // 删除用户提交的数据
                    $form->deleteInput('update_time');
                }else{
                    $form->update_time =time();
                }
            });

        });
    }
}