<?php
declare(strict_types=1);

namespace app\model\school_approval;

use think\Model;

/**
 * 审批流程模型
 * Class SchoolApprovalProcess
 * @package app\model\school_approval
 */
class SchoolApprovalProcess extends Model
{
    /**
     * 数据表主键
     * @var string
     */
    protected $pk = 'id';

    /**
     * 模型名称
     * @var string
     */
    protected $name = 'school_approval_process';

    /**
     * 自动写入时间戳
     * @var bool
     */
    protected $autoWriteTimestamp = true;

    /**
     * 创建时间字段
     * @var string
     */
    protected $createTime = 'created_at';

    /**
     * 更新时间字段
     * @var string
     */
    protected $updateTime = 'updated_at';

    /**
     * 审批状态
     */
    const STATUS_PENDING = 'pending';   // 待审批
    const STATUS_APPROVED = 'approved'; // 已批准
    const STATUS_REJECTED = 'rejected'; // 已拒绝

    /**
     * 关联审批参与人
     * @return \think\model\relation\HasMany
     */
    public function participants()
    {
        return $this->hasMany(SchoolApprovalParticipants::class, 'process_id', 'id')->order('sequence', 'asc');
    }
}