yxy/app/admin/controller/Protocol.php

<?php

namespace app\admin\controller;

use app\common\controller\Backend;
use think\db\Where;

/**
 * 借取协议管理管理
 */
class Protocol extends Backend
{
    /**
     * Protocol模型对象
     * @var object
     * @phpstan-var \app\admin\model\Protocol
     */
    protected object $model;

    protected array|string $preExcludeFields = ['id', 'update_time', 'create_time'];

    protected string|array $quickSearchField = ['id'];

    public function initialize(): void
    {
        parent::initialize();
        $this->model = new \app\admin\model\Protocol;
        $this->request->filter('clean_xss');
    }


    /**
     * 若需重写查看、编辑、删除等方法，请复制 @see \app\admin\library\traits\Backend 中对应的方法至此进行重写
     */

    /**
     * 编辑
     * @throws Throwable
     */
    public function edit(): void
    {
        $pk  = $this->model->getPk();
        $id  = $this->request->param($pk);
        $row = $this->model->find($id);
        if (!$row) {
            $this->error(__('Record not found'));
        }

        $dataLimitAdminIds = $this->getDataLimitAdminIds();
        if ($dataLimitAdminIds && !in_array($row[$this->dataLimitField], $dataLimitAdminIds)) {
            $this->error(__('You have no permission'));
        }

        if ($this->request->isPost()) {
            $data = $this->request->post();
            if (!$data) {
                $this->error(__('Parameter %s can not be empty', ['']));
            }

            if( $data['switch'] == 0 && !isset($data['editor'])){
                $this->error('请确保至少有一种协议正在使用中！');
            }

            $data   = $this->excludeFields($data);
            $result = false;
            $this->model->startTrans();
            try {
                // 模型验证
                if ($this->modelValidate) {
                    $validate = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                    if (class_exists($validate)) {
                        $validate = new $validate;
                        if ($this->modelSceneValidate) $validate->scene('edit');
                        $data[$pk] = $row[$pk];
                        $validate->check($data);
                    }
                }

                if( $data['switch'] == 1 && !isset($data['editor'])){
                    $this->model->where('switch',1)->update(['switch' => 0]);
                }

                $result = $row->save($data);
                $this->model->commit();
            } catch (Throwable $e) {
                $this->model->rollback();
                $this->error($e->getMessage());
            }
            if ($result !== false) {
                $this->success(__('Update successful'));
            } else {
                $this->error(__('No rows updated'));
            }
        }

        $this->success('', [
            'row' => $row
        ]);
    }

}