solarai/app/Models/BoardComment.php

<?php
namespace App\Models;

class BoardComment extends BaseSoftDeleteModel
{
    protected $table = 'board_comment';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [
        'article_id',
        'uid',
        'parent_id',
        'content',
        'path',
        'created_id',
        'created_at'
    ];

    /**
     * The attributes that should be hidden for arrays.
     *
     * @var array
     */
    protected $hidden = [
    ];

    protected $visible = [
        'article_id',
        'uid',
        'parent_id',
        'content',
        'path',
        'created_id',
        'created_at'
    ];

    public function article()
    {
        return $this->belongsTo('App\Models\BoardArticle', 'article_id');
    }
}