xtu_mall/app/admin/controller/general/Lang.php

<?php
namespace app\admin\controller\general;

use app\admin\model\general\Lang as LangModel;
use app\common\controller\Backend;
use think\exception\ValidateException;
use think\facade\Db;

class Lang extends Backend
{
    protected $searchFields = 'id,name,mark,code,locale';

    protected function initialize()
    {
        parent::initialize();
        $this->modelClass = new LangModel;
    }

    public function index()
    {
      
        if ($this->request->isAjax()) {
            [$page, $limit, $where, $sort, $order] = $this->buildTableParames();
            $count = $this->modelClass->where($where)->count();
            $data = $this->modelClass->where($where)->order($sort, $order)->page($page, $limit)->select();
            return json(['code' => 0, 'count' => $count, 'data' => $data]);
        }
        return $this->fetch();
    }

    public function add()
    {
        if ($this->request->isPost()) {
            $this->token();
            $params = $this->request->post('row/a');
            if (!$params) {
                $this->error('参数不能为空');
            }
            Db::startTrans();
            try {
                $this->validate($params, 'app\\admin\\validate\\Lang.add');
                if (!empty($params['is_default'])) {
                    Db::name('lang')->where('id', '>', 0)->update(['is_default' => 0]);
                }
                $this->modelClass->save($params);
                Db::commit();
            } catch (ValidateException | \Exception $e) {
                Db::rollback();
                $this->error($e->getMessage());
            }
            $this->success('新增成功');
        }
        return $this->fetch();
    }

    public function edit()
    {
        $id = $this->request->param('id/d');
        $row = $this->modelClass->find($id);
        if (!$row) {
            $this->error('记录未找到');
        }
        if ($this->request->isPost()) {
            $this->token();
            $params = $this->request->post('row/a');
            if (!$params) {
                $this->error('参数不能为空');
            }
            Db::startTrans();
            try {
                $validate = new \app\admin\validate\Lang();
                $validate->scene('edit');
                $validate->rule([
                    'mark|语言标识' => 'require|regex:^[a-z]{2,20}$|unique:lang,mark,' . $id,
                    'code|标准语言码' => 'require|regex:^[a-z\\-]{2,20}$|unique:lang,code,' . $id,
                ]);
                $validate->check($params);
                if (!empty($params['is_default'])) {
                    Db::name('lang')->where('id', '<>', $id)->update(['is_default' => 0]);
                }
                $row->save($params);
                Db::commit();
            } catch (ValidateException | \Exception $e) {
                Db::rollback();
                $this->error($e->getMessage());
            }
            $this->success('编辑成功');
        }
        $this->assign('data', $row);
        return $this->fetch();
    }

    public function del()
    {
        if (!$this->request->isPost()) {
            $this->error('未知参数');
        }
        $ids = $this->request->param('id/a', []);
        if (empty($ids)) {
            $this->error('参数错误');
        }
        $defaultCount = $this->modelClass->where('id', 'in', $ids)->where('is_default', 1)->count();
        if ($defaultCount > 0) {
            $this->error('默认语言禁止删除，请先切换默认语言');
        }
        $this->modelClass->where('id', 'in', $ids)->delete();
        $this->success('删除成功');
    }

    public function setDefault()
    {
        $id = $this->request->param('id/d');
        $row = $this->modelClass->find($id);
        if (!$row) {
            $this->error('记录未找到');
        }
        Db::startTrans();
        try {
            Db::name('lang')->where('id', '>', 0)->update(['is_default' => 0]);
            $row->save(['is_default' => 1]);
            Db::commit();
        } catch (\Exception $e) {
            Db::rollback();
            $this->error($e->getMessage());
        }
        $this->success('默认语言设置成功');
    }
}