yuan/application/admin/controller/City.php

<?php

namespace app\admin\controller;

use app\common\controller\Backend;
use think\Db;
use think\exception\PDOException;
use think\exception\ValidateException;

/**
 * 城市设置
 *
 * @icon fa fa-circle-o
 */
class City extends Backend
{
    
    /**
     * City模型对象
     * @var \app\admin\model\City
     */
    protected $model = null;

    public function _initialize()
    {
        parent::_initialize();
        $this->model = new \app\admin\model\City;

    }

    public function import()
    {
        parent::import();
    }

    /**
     * 默认生成的控制器所继承的父类中有index/add/edit/del/multi五个基础方法、destroy/restore/recyclebin三个回收站方法
     * 因此在当前控制器中可不用编写增删改查的代码,除非需要自己控制这部分逻辑
     * 需要将application/admin/library/traits/Backend.php中对应的方法复制到当前控制器,然后进行修改
     */
    

    /**
     * 查看
     */
    public function index()
    {
        //当前是否为关联查询
        $this->relationSearch = false;
        //设置过滤方法
        $this->request->filter(['strip_tags', 'trim']);
        if ($this->request->isAjax()) {
            //如果发送的来源是Selectpage，则转发到Selectpage
            if ($this->request->request('keyField')) {
                return $this->selectpage();
            }
            list($where, $sort, $order, $offset, $limit) = $this->buildparams();

            $list = $this->model
                    
                    ->where($where)
                    ->order($sort, $order)
                    ->paginate($limit);

            foreach ($list as $row) {
                $row->visible(['id','name','create_time']);
            }

            $result = array("total" => $list->total(), "rows" => $list->items());

            return json($result);
        }
        return $this->view->fetch();
    }
    /**
     * 添加
     */
    public function add()
    {
        if ($this->request->isPost()) {
            $params = $this->request->post("row/a");
            if ($params) {
                $params = $this->preExcludeFields($params);
                $params['eng'] = self::getFirstCharters($params['name']);
                if ($this->dataLimit && $this->dataLimitFieldAutoFill) {
                    $params[$this->dataLimitField] = $this->auth->id;
                }
                $result = false;
                Db::startTrans();
                try {
                    //是否采用模型验证
                    if ($this->modelValidate) {
                        $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                        $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.add' : $name) : $this->modelValidate;
                        $this->model->validateFailException(true)->validate($validate);
                    }
                    $result = $this->model->allowField(true)->save($params);
                    Db::commit();
                } catch (ValidateException $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                } catch (PDOException $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                } catch (Exception $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                }
                if ($result !== false) {
                    $this->success();
                } else {
                    $this->error(__('No rows were inserted'));
                }
            }
            $this->error(__('Parameter %s can not be empty', ''));
        }
        return $this->view->fetch();
    }

    /**
     * 编辑
     */
    public function edit($ids = null)
    {
        $row = $this->model->get($ids);
        if (!$row) {
            $this->error(__('No Results were found'));
        }
        $adminIds = $this->getDataLimitAdminIds();
        if (is_array($adminIds)) {
            if (!in_array($row[$this->dataLimitField], $adminIds)) {
                $this->error(__('You have no permission'));
            }
        }
        if ($this->request->isPost()) {
            $params = $this->request->post("row/a");

            if ($params) {
                $params['eng'] = self::getFirstCharters($params['name']);

                $params = $this->preExcludeFields($params);
                $result = false;
                Db::startTrans();
                try {
                    //是否采用模型验证
                    if ($this->modelValidate) {
                        $name = str_replace("\\model\\", "\\validate\\", get_class($this->model));
                        $validate = is_bool($this->modelValidate) ? ($this->modelSceneValidate ? $name . '.edit' : $name) : $this->modelValidate;
                        $row->validateFailException(true)->validate($validate);
                    }
                    $result = $row->allowField(true)->save($params);
                    Db::commit();
                } catch (ValidateException $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                } catch (PDOException $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                } catch (Exception $e) {
                    Db::rollback();
                    $this->error($e->getMessage());
                }
                if ($result !== false) {
                    $this->success();
                } else {
                    $this->error(__('No rows were updated'));
                }
            }
            $this->error(__('Parameter %s can not be empty', ''));
        }
        $this->view->assign("row", $row);
        return $this->view->fetch();
    }

    //获取汉字的首字母
    function getFirstCharters($str)
    {
        if (empty($str)) {
            return '';
        }
        //取出参数字符串中的首个字符
        $temp_str = substr($str,0,1);
        if(ord($temp_str) > 127){
            $str = substr($str,0,3);
        }else{
            $str = $temp_str;
            $fchar = ord($str{0});
            if ($fchar >= ord('A') && $fchar <= ord('z')){
                return strtoupper($temp_str);
            }else{
                return null;
            }
        }
        $s1 = iconv('UTF-8', 'gb2312//IGNORE', $str);
        if(empty($s1)){
            return null;
        }
        $s2 = iconv('gb2312', 'UTF-8', $s1);
        if(empty($s2)){
            return null;
        }
        $s = $s2 == $str ? $s1 : $str;
        $asc = ord($s{0}) * 256 + ord($s{1}) - 65536;
        if ($asc >= -20319 && $asc <= -20284)
            return 'A';
        if ($asc >= -20283 && $asc <= -19776)
            return 'B';
        if ($asc >= -19775 && $asc <= -19219)
            return 'C';
        if ($asc >= -19218 && $asc <= -18711)
            return 'D';
        if ($asc >= -18710 && $asc <= -18527)
            return 'E';
        if ($asc >= -18526 && $asc <= -18240)
            return 'F';
        if ($asc >= -18239 && $asc <= -17923)
            return 'G';
        if ($asc >= -17922 && $asc <= -17418)
            return 'H';
        if ($asc >= -17417 && $asc <= -16475)
            return 'J';
        if ($asc >= -16474 && $asc <= -16213)
            return 'K';
        if ($asc >= -16212 && $asc <= -15641)
            return 'L';
        if ($asc >= -15640 && $asc <= -15166)
            return 'M';
        if ($asc >= -15165 && $asc <= -14923)
            return 'N';
        if ($asc >= -14922 && $asc <= -14915)
            return 'O';
        if ($asc >= -14914 && $asc <= -14631)
            return 'P';
        if ($asc >= -14630 && $asc <= -14150)
            return 'Q';
        if ($asc >= -14149 && $asc <= -14091)
            return 'R';
        if ($asc >= -14090 && $asc <= -13319)
            return 'S';
        if ($asc >= -13318 && $asc <= -12839)
            return 'T';
        if ($asc >= -12838 && $asc <= -12557)
            return 'W';
        if ($asc >= -12556 && $asc <= -11848)
            return 'X';
        if ($asc >= -11847 && $asc <= -11056)
            return 'Y';
        if ($asc >= -11055 && $asc <= -10247)
            return 'Z';
        return rare_words($asc);
    }
    // 添加删除一级列表返回数据格式
    public function indexx()
    {
        $data = Db::name('city')->field('id,name')->select();
        if($this->request->request("keyValue")){
            return ['total'=>1, 'list'=>$data[$this->request->request("keyValue")-1]];
        }
        return json(['list' => $data, 'total' => count($data)]);
    }

    // 一级js搜索返回数据格式
    public function indexxx()
    {
        $data = Db::name('city')->field('id,name')->select();
        return json($data);

    }

    // js二级联动搜索和添加删除二级联动返回数据格式
    public function indexxxx()
    {
        $data = Db::name('city')->field('id value,name')->select();
        return $this->success('','',$data);
    }
}