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Programmatically render page_list filtered with current page's topics

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Hello,

I have pages with blog topics attached, and I have blog entries with blog topics attached.

I want to render a page list on page A which lists the blog entries which have at least one of the topics of page A.

I managed to do this more or less in this way:

$a11 = new Area('artikel');
                $a11->display($c);
                //get topics
                $attributeKey = CollectionAttributeKey::getByHandle('blog_entry_topics');
                $akHandle = $attributeKey->getAttributeKeyHandle();
                $topics = $c->getAttribute($akHandle);
                $topicsID = $topics[0]->treeNodeID;
                //var_dump($topics);
                //create page list block
                $page_list_block = BlockType::getByHandle('page_list');
                $block_data = array(
                    'num' => 3, // number of results
                    'includeName' => true, // include page name
                    'includeDescription' => false,
                    'truncateSummaries' => "1",
Viewing 15 lines of 34 lines. View entire code block.


This is not very elegant.

1.) How can I do this with $page_list_block->render("view")? I don't know how to add the $block_data to $page_list_block. And when I tried leaving out most of the block data, strangely only the pagination was rendered correctly, the list itself was empty.
It worked with
$page_list_block->render("templates/thumbnail_grid/view")
which is even more strange.

2.) Is there a way to add more than one topic to $block_data (I guess not).

Thank you very much for any advice!

Regards,

lu