category/src/Api.php

<?php

namespace Category\Src;

use Dever;

class Api
{
    private $default = array
    (
        'value' => -1,
        'name' => '不选择',
    );

    private $search_default = array
    (
        'value' => -1,
        'name' => '不选择',
    );

	/**
     * 获取分类数据
     *
     * @return mixed
     */
    public function get()
    {
        # 联动总数
        $level_total = 100;

        # 当前联动级别
        $level_num = Dever::input('level_num');

        # 一般为id
        $level_id = Dever::input('level_id');

        # 当前选择的id
        $level_self = Dever::input('level_self');

        # 是否是搜索列表页
        $level_search = Dever::input('level_search');
        if ($level_search) {
            $default = $this->search_default;
        } else {
            $default = $this->default;
        }

        $data = array();

        # 三级联动
        if ($level_num == 1) {
            $data = Dever::db('category/info')->getAll(array('info_id' => -1, 'id' => $level_self));
        } elseif($level_id > 0) {
            $data = Dever::db('category/info')->getAll(array('info_id' => $level_id, 'id' => $level_self));
        }

        if ($data || $level_num == 1) {
            array_unshift($data, $default);
        }

        if (!$data) {
            Dever::alert('error');
        }

        $result['level_total'] = $level_total;
        $result['list'] = $data;
        return $result;
    }

    /**
     * 根据分类id转成名称
     *
     * @return mixed
     */
    public function string($cate)
    {
        if ($cate) {
            $cate = explode(',', $cate);
            $result = array();
            foreach ($cate as $k => $v) {
                $result[$k] = $this->getName($v);
            }
            return implode(',', $result);
        }
        return '';
    }


    private function getName($id)
    {
        $name = '父级分类';
        if ($id > 0) {
            $data = Dever::db('category/info')->one($id);
            if ($data) {
                $name = $data['name'];
            }
        }
        return $name;
    }
}