erp/core/CoreApp/models/Model_flow.php

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); 
include APPPATH.'/models/Model_flow_status.php';
class Model_Flow extends Lin_Model 
{
    public $allStatus;
    // const STATUS_PROCESSING  = 0;//待处理
    // const STATUS_COMPLETED  = 1;//已完成
    // const STATUS_CANCEL = -1;//取消
    // const STATUSCLOSE = -2;//关闭

    function __construct(){
        parent::__construct();
        $this->load->database();
        $this->table = 'flow';
        $this->load_table('flow');
        $this->allStatus=new Model_Flow_status();
    }
 
    public function allStatus()
    {
        return [
            
        ];
    }

    /**
     * 此状态的下一个状态
     * @param Status $status
     * @return mixed
     */
    public function getNextStatus($status)
    {
        $flowStatus = $this->allStatus->find('`code`="'.$status.'"');
        return $this->allStatus->find(" `flow_id` =".$flowStatus['flow_id']." and `order` >" . $flowStatus['order'],"*",'order');
    }

    public function getCloseStatus($status)
    {
        return $this->allStatus->find('`flow_id`='.$status['flow_id'].' and `order` = '.Model_Flow_status::STATUSCLOSE.'','*','`order`');

    }

    public function getCancelStatus($status)
    {
        return $this->allStatus->find('`flow_id`='.$status['flow_id'].' and `order` = '.Model_Flow_status::STATUS_CANCEL.'','*','`order`');

    }
    /**
     * 获取初始状态
     * @return mixed
     */
    public function getFirstStatus($flow)
    {
        return $this->allStatus->find('`flow_id`='.$flow['id'].' and `order` >= 0','*','`order`');
    }
    /**
     * 获取最终状态
     * @return mixed
     */
    public function getFinalStatus($status)
    {   
        return $this->allStatus->find('`flow_id`='.$status['flow_id'].' and `order` >= 0','*','`order` desc');
    }


    // public function process()
    // {
    //     return $this->hasMany(Process::class, 'flow_id');
    // }
}