php - Using $casts for array of objects

I've got a following class:

class Account extends Model
{
    protected $casts = [
        'industries' => 'json',
    ];

    public function getIndustriesAttribute($value = null)
    {
        return collect(json_decode($value, true))->map(function ($industry) {
            return new Industry($industry);
        });
    }
}
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withindustries being a json field in the database.

The above code does what I'm aiming to do - if given field is accessed, the value from given field will be json_decoded and then transformed into array ofIndustry. When this model is saved, industries will be saved as json per$casts.

What I'd like to do is get rid ofgetIndustriesAttribute and make Laravel do a cast of my json to array of objects - ideally my code would look like this:

class Account extends Model
{
    protected $casts = [
        'industries' => Industry::class.'[]',
    ];
}
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Of course this doesn't work, but it gives an idea what I'd like to happen - an array of objects should be json_encode / json_decoded (Industry is a plain object so it doesn't need to be an serialized).

As a workaround I've written this castable:

<?php

use Illuminate\Contracts\Database\Eloquent\CastsAttributes;

trait ArrayableCast
{
    public static function castUsing(array $arguments)
    {
        if (in_array('[]', $arguments)) {
            return new class implements CastsAttributes {
                public function get($model, $key, $value, $attributes)
                {
                    return collect(json_decode($value, true))->map(function ($item) {
                        return new (static::class)($item);
                    })->all();
                }
        
                public function set($model, $key, $value, $attributes)
                {
                    return json_encode(collect($value)->map(function ($item) {
                        return $item->toArray();
                    })->all());
                }
            };
        }

        return new class implements CastsAttributes {
            public function get($model, $key, $value, $attributes)
            {
                return new (static::class)(json_decode($value, true));
            }
    
            public function set($model, $key, $value, $attributes)
            {
                return json_encode($value->toArray());
            }
        };
    }
}
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which can be used per

protected $casts = [
   'industries' => Industry::class.':[]',
];
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but I'd appreciate if there was a native Laravel of handling this scenario.

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