qyadmin/app/Model/ProjectEmployee.php

<?php

namespace App\Model;

use Illuminate\Database\Eloquent\Model;

class ProjectEmployee extends Model
{
    protected $table = "project_employee"; //指定表
    const CREATED_AT = null;
    const UPDATED_AT = null;
    protected $dateFormat = 'U';

    const type_one = 1; // 项目成员
    const type_two = 2; // 阶段成员
    const type_three = 3; // 节点成员
    const type_four = 4; // 任务成员
    public static $type = [
        self::type_one,
        self::type_two,
        self::type_three,
        self::type_four,
    ];
    public static $type_title = [
        self::type_one => '项目成员',
        self::type_two => '阶段成员',
        self::type_three => '节点成员',
        self::type_four => '任务成员',
    ];

    public static $type_id = [
        self::type_one => 'project_id',
        self::type_two => 'project_stage_id',
        self::type_three => 'project_stage_node_id',
        self::type_four => 'project_stage_node_mission_id',
    ];

    public static $type_id_type = [
        self::type_one => [self::type_one, self::type_two, self::type_three, self::type_four],
        self::type_two => [self::type_two, self::type_three, self::type_four],
        self::type_three => [self::type_three, self::type_four],
        self::type_four => [self::type_four],
    ];
}