hainan/app/Models/AgentSetting.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;

class AgentSetting extends BaseModel
{
    use HasFactory;

	protected $fillable = ['agent_id', 'setting'];
	protected $casts = ['setting' => 'json'];

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

	public static function val($agent_id, $key)
	{
		$setting = static::query()->where('agent_id', $agent_id)->value('setting');
		return $setting[$key] ?? null;
	}
}