laravel_demo/app/Models/Comment.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Comment extends Model
{
	use SoftDeletes;

	const STATUS_PENDING	= 0;
	const STATUS_PUBLISHED	= 1;
	const STATUS_REJECTED	= 2;

	// Наличие fillable требуется только при использовании mass assignment, т.е. создание записи из ассоциативного массива
	protected $fillable = [
		"name",
		"email",
		"content",
		"status"
	];

	function commentable() {
		return $this->morphTo();
	}

	function scopePending($query) {
		$query->where("status", static::STATUS_PENDING);
	}

	function scopePublished($query) {
		$query->where("status", static::STATUS_PUBLISHED);
	}

	function scopeRecent($query) {
		$query->orderBy("created_at", "desc");
	}

	function allow() {
		$this->status = static::STATUS_PUBLISHED;
		$this->save();
	}

	function reject() {
		$this->status = static::STATUS_REJECTED;
		$this->save();
	}
}