How to set a Laravel model’s default orderby column without modifying existing queries or implementing in new calls.

This is done using the boot function which is used to override default actions in the model.

Here addGlobalScope is stated to modify any query for the model which will now order by created_at DESC

Effectively saving you from manually adding this orderby onto all the queries you will be using.

protected static function boot()
{
    parent::boot();

    static::addGlobalScope('order', function (Builder $builder) {
        $builder->orderBy('created_at', 'DESC');
    });

}

You will need to ensure the Builder trait is included at the top of page:

use Illuminate\Database\Eloquent\Builder;