Display Orders which contain a product

[TempleClause]

I'd like to have a page where I can enter a product via autocomplete search which then displays all orders containing that product.

 

I got it working with an all custom solution (without using the built-in methods for displaying the table, filter and so on). 

 

But now I would have to develop all the functionality that comes with the built-in tables so I'm wondering if there maybe is an easier solution. 

 

Is there any way to display a custom field for my product autocomplete search before the actual table but still in the same form so I will receive the data from that field? I know I can do something like 

 public function renderList()
    {
        $this->content = 'hello world';
        $this->content .= parent::renderList();
    }

But than hello world is outside of the form and hence the data is not sent back to the controller. 

 

Thanks for helping