Use setQueriedColumns on GridField - php

Question

I have a dataobject which I want to use on a GridField on a page but I want to limit the columns displayed. I used setQueriedColumns() to list the fields I wanted but it is still displaying the default $summary_fields from the dataobject.
MyActivity dataobject:
class MyActivity extends DataObject{
private static $db = array(
'Title' => 'Varchar(255)',
'URLSegment' => 'Varchar(512)',
'IsPublished' => 'Boolean',
'IsPublic' => 'Boolean',
'IsBooked' => 'Boolean',
'MaxDuration' => 'Int',
'PricePoint' => 'Int',
'Summary' => 'HTMLText',
'Body' => 'HTMLText',
'Sort' => 'Int'
);
private static $has_one = array(
'FileAttachment' => 'File'
);
private static $summary_fields = array(
'Title' => 'Name',
'URLSegment' => 'URLSegment',
'IsPublished' => 'Published',
'IsBooked' => 'Booked',
'Events.Count' => 'List of Events',
'Categories.Count' => ' of Categories'
);
static $has_many = array(
'Events' => 'MyEvent'
);
static $belongs_many_many = array(
'Categories' => 'MyCategory'
);
...
}
MyActivityPage:
class MyActivityPage extends Page{
public function getCMSFields(){
$fields = parent::getCMSFields();
$GridFieldConfig = GridFieldConfig_RecordEditor::create();
$fields->addFieldToTab('Root.Courses',
GridField::create(
'FileAttachment',
'Activity List',
MyActivity::get()->filter(['IsPublished' => 1])
->setQueriedColumns([
'Title',
'URLSegment',
'IsPublished'
]),
$GridFieldConfig
)
);
return $fields;
}
...
}

Answer 1

After thorough searching, I got what I'm looking for. Apparently, we can set the columns using GridFieldConfig then limit the fields by overriding the $summary_fields using the setDisplayFields() method in the GridFieldDataColumns object.
This could be handy to people who are looking for similar solution.
$gridField = GridField::create(
'FileAttachment',
'Activity List',
MyActivity::get()->filter(['IsPublished' => 1]),
$GridFieldConfig
)
$gridField->getConfig()
->getComponentByType('GridFieldDataColumns')
->setDisplayFields([
'Title' => 'Title',
'URLSegment' => 'URLSegment',
'IsPublished' => 'IsPublished'
]);
$fields->addFieldToTab('Root.Courses',$gridField);`