I want to get some default values whenever select2 box loads just like in the image, Is there a way to do this? Then when I click on the box the dropdown should show as usual with other values.

I tried by giving multiselect

Select2::create(array(
                    'name'=>"roles",
                    "multiple"=>true,
                    "placeholder"=>"Select roles",
                    "multiSelect"=>array("default1","default2","default3"),
                    "data"=>$this->params()["adminRoles"],
                    "dataBind"=>array("value"=>"role_id",
                    "text"=>"roles"
                  ),

But its not showing

I tried but its not working, I still cant see default options when page opens/loads.

Here is my code

This is my user.php file

class UserMgmt extends CustomBoard
{
   use \koolreport\inputs\Bindable;
   use \koolreport\inputs\POSTBinding;
  
  protected function defaultParamValues()
    {
      return array(
        "roles" => array("John Doe"=>"33","Doe"=>"11","John"=>"12",),
      );
    }
  protected function bindParamsToInputs()
    {
      return array(
        "roles"=>"roles",
      );
    }

   protected function drawRoles($request, $response, $msg = null, $status = null)
    {

      $defaults= [];             ///It contains data fetched from DB as key value pair

     $this->renderView(
        "AddUser",
      ["name" => $request->params()['name'],
       "email"=> $request->params()['email'],
       "adminRoles" => $defaults
      ]
    );
    }

This is my AddUser.view.php file

<?php
                Select2::create(array(
                    "name" => "roles",
                    "id"   => "roles",
                    "multiple"=>true,
                    "placeholder"=>"Select roles",
                    "data"=>$this->params()["adminRoles"],
                    "dataBind"=>array(
                      "value"=>"role_id",
                      "text"=>"roles"
                      ),
            	"attributes"=>array(
                "class"=>"form-control",
            	  // "size"=>5,
                "includeSelectAllOption"=>true,
                )
            ));
  ?>

But still I cant see "John Doe", "Doe", "John" as default values in in the Select2 box .

I got your point, but still no success. No default values are coming in the select2 box.

For your reference this is the data of $this->params()["adminRoles"]

Array ( [38admin] => 1 [38ProgramCoordination] => 2 [38Control Room] => 3 [99admin] => 4 [99Program Coordination] => 5 )

and in defaultParamValues(),

return array(
        "roles" => array(1, 2, 3),
      );

The select2's data is coming fine for me, I am able to bind the data and show in dropdown.

The problem is I am unable to pass some default values and show in the select box.

As you suggested I gave "role_id" key in the defaultParamValues(), like this

return array(
        "roles" => array(1, 2, 3),
      );

And select2's data => $this->params()["adminRoles"] has roles associated for each of those "role_id" keys. The values in $this->params()["adminRoles"] are like this

Array ( [38admin] => 1 [38ProgramCoordination] => 2 [38Control Room] => 3 [99admin] => 4 [99Program Coordination] => 5 )

Now, I just want 38admin, 38ProgramCoordination, 38Control Room to display as default values in the select2 box