book_admin/application/common/model/BookCollect.php

<?php

namespace app\common\model;

use think\Model;

class BookCollect extends Model
{
    // 表名
    protected $table = 'book_collect';
    
    // 自动写入时间戳字段
    protected $autoWriteTimestamp = 'int';

    // 定义时间戳字段名
    protected $createTime = 'createtime';
    protected $updateTime = 'updatetime';
    
    // 追加属性
    protected $append = [
        'type_text'
    ];
    

    
    public function getTypeList()
    {
        return ['1' => __('Type 1'),'2' => __('Type 2'),'3' => __('Type 3')];
    }     


    public function getTypeTextAttr($value, $data)
    {        
        $value = $value ? $value : $data['type'];
        $list = $this->getTypeList();
        return isset($list[$value]) ? $list[$value] : '';
    }

    public function book()
    {
        return $this->belongsTo('Book', 'book_id', 'id')->setEagerlyType(0);
    }
}