Send array from twig to controller via route

Question

I have in my twig a link as shown below and I would like to send a lot of data (array) to a controller. How do I go about it ? Do I use params? what is the best way to handle this in your opinion? Thanks.

In my twig:

 

 <a href="{{ path('mymodule.send') }}">Send</a>

Routing file:

mymodule.send:
  path: '/admin/send'
      defaults:
        _controller: '\Drupal\mymodule\Controller\MyController::myFunction'
        _title: 'Send data'
      requirements:
        _permission: 'administer site configuration'
      options:
        _admin_route: TRUE

My controller where I want to send data:

class MyController extends ControllerBase {

      public function myFunction() {
        }
   
    }

Answer 1

A lot of data should typically be in the body of an HTTP message, so a POST with data as JSON, application/x-www-form-urlencoded, or multipart/form-data is the way.

If there is not so much data, and it is a one-dimension array, and it is acceptable that it will be logged in webserver access logs, you can use query strings.