<?php
/**
 * Created by PhpStorm.
 * User: vitaliyprokopov
 * Date: 9/23/17
 * Time: 1:56 PM
 */

namespace App\Traits;


use App\Category;
use App\Comment;
use App\Post;

trait Commentable
{
    private $type = null;

    /**
     * Scope a query to only include popular users.
     *
     * @param \Illuminate\Database\Eloquent\Builder $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeComment($query)
    {
        if ($this instanceof Post) {
            $this->type = Comment::TYPE_POST;
        } else if ($this instanceof Category) {
            $this->type = Comment::TYPE_CATEGORY;
        }

        if ($this->type) {
            return Comment::where('target_id',  $this->id)->where('target_type', $this->type)->orderBy('created_at', 'desc')->get();
        }

        return null;
    }
}