Question

The error appears on my custom grid, where I do ‘select all’ for all my records (more then 3000) and try to go to the next grid page.
As I can see, all my IDS are set into internal_import param of URL

/internal_import_ids/1,2,3,4,5,6,7,8,...

How can I put this internal_import_ids to POST, rather then to URL?

internal_import_ids declared in massaction section

...
$this->getMassactionBlock()->setFormFieldName('import_ids');
...

Answer 1

One of the solutions I found, is to use AJAX. With AJAX Grid works nicely.

public function __construct()
{
    ...
    $this->setUseAjax(true);
}

So, my problem is solved. But if somebody will found the solution without AJAX – it will be nice to see it.