hainan/app/Models/Channel.php

<?php

namespace App\Models;

use Dcat\Admin\Traits\ModelTree;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\SoftDeletes;

/**
 * 频道列表
 * Class Channel
 * @package App\Models
 */
class Channel extends BaseModel
{
    use HasFactory, SoftDeletes;
	use ModelTree;

	// 模型树需要的三个属性
	protected $parentColumn = 'pid';
	protected $orderColumn = 'sort';
	protected $titleColumn = 'name';

    public function __construct(array $attributes = [])
	{
		parent::__construct($attributes);
		$this->timestamps = false;
	}

	public function getIconAttribute($value): string
	{
		return $value ? $this->host . $value : '';
	}

    public function setIconAttribute($value)
	{
		//修改器里面$this->host变量为空
		$this->attributes['license_pic'] = str_replace(env('APP_URL'), '', $value);
	}
}