liwo/app/Models/Status.php

<?php

namespace App\Models;

use App\Models\Model;

class Status extends Model
{
    protected $table = 'statuses';

    protected $fillable = [
        'business_id', 'workflow_id', 'name', 'state', 'order'
    ];

    protected $reportable = [
        'name', 'state', 'order'
    ];

    public function rules()
    {
        return  [
            'name' =>'required|string|min:3|max:255',
            'state' => 'nullable|between:0,3',
            'order' => 'nullable|numeric|min:0'
        ];
    }

    public function getValueOf(?string $key)
    {
        $values = [
            'business_id' => $this->business_id,
            'project_id' => null,
            'sprint_id' => null,
            'workflow_id' => $this->workflow_id,
            'status_id' => $this->id,
            'system_id' => null,
            'user_id' => null,
            'task_id' => null,
            'subject_id' => $this->id,
        ];

        if ($key && isset($values, $key)) {
            return $values[$key];
        }

        return $values;
    }

    public function workflow()
    {
        return $this->belongsTo(Workflow::class,'workflow_id','id');
    }
}