crm/app/model/MaterialArticle.php

<?php

namespace app\model;

use think\Model;

class MaterialArticle extends Model
{
    // public function teacher()
    // {
    //     return $this->belongsTo('MaterialTeacher', 'teacher_id');
    // }

    public function getClassifyAttr($value)
    {
        $classify = [
            1 => '装修工艺',
            2 => '装修材料',
            3 => '装修施工',
            4 => '装修设计',
            5 => '软装',
            6 => '装修环保',
            7 => '装修风水',
            8 => '装修保障'
        ];
        return $classify[$value];
    }
}