application/admin/controller/Search.php

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<?php
/**
 * 易优CMS
 * ============================================================================
 * 版权所有 2016-2028 海南赞赞网络科技有限公司，并保留所有权利。
 * 网站地址: http://www.eyoucms.com
 * ----------------------------------------------------------------------------
 * 如果商业用途务必到官方购买正版授权, 以免引起不必要的法律纠纷.
 * ============================================================================
 * Author: 小虎哥 <1105415366@qq.com>
 * Date: 2018-4-3
 */

namespace app\admin\controller;

use think\Db;
use think\Page;

class Search extends Base
{
    private $searchword_db;

    public function _initialize() {
        parent::_initialize();
        $this->searchword_db = Db::name('search_word');
    }

    /**
     * 搜索主页
     */
    public function index()
    {
        $list = array();
        $param = input('param.');
        $keywords = input('keywords/s');
        $keywords = trim($keywords);
        $condition = [];

        foreach (['keywords'] as $key) {
            if (isset($param[$key]) && $param[$key] !== '') {
                if ($key == 'keywords') {
                    $condition['word'] = array('LIKE', "%{$keywords}%");
                } else {
                    $condition[''.$key] = array('eq', trim($param[$key]));
                }
            }
        }

        $condition['lang'] = array('eq', $this->admin_lang);

        $count = $this->searchword_db->where($condition)->count('id');
        $Page = $pager = new Page($count, config('paginate.list_rows'));
        $list = $this->searchword_db->where($condition)->order('id desc')->limit($Page->firstRow.','.$Page->listRows)->select();

        $show = $Page->show();
        $this->assign('page',$show);
        $this->assign('list',$list);
        $this->assign('pager',$pager);
        return $this->fetch();
    }