\AppChannelLevel

<?php

namespace App;

use Illuminate\Database\Eloquent\Relations\BelongsToMany;
use Illuminate\Foundation\Auth\User as Authenticatable;

class ChannelLevel extends Authenticatable
{
    protected $table = 'channel_level';
    public function getContentAttribute($content)
    {
        return array_values(json_decode($content, true) ?: []);
    }

    public function setContentAttribute($content)
    {
        $this->attributes['content'] = json_encode(array_values($content));
    }

}