Knowledge__kav visualforce not shown in Article page layouts

Question

I have create a visualforce with KnowledgeArticleVersion as standardController

Visualforce page:

<apex:page standardController="KnowledgeArticleVersion" extensions="MyController" showHeader="false">
   <div>Test here for text</div>
</apex:page>

Apex Class:

public with sharing class MyController {

    public SObject article { get; set; }

    public MyController() {
    }

    public MyController(ApexPages.StandardController controller) {
        SObject record = (KnowledgeArticleVersion) controller.getRecord();
        String articleId = record.Id;
        if (articleId != null) {
            this.populateArticle(articleId);
        }
    }
}

my problem is that visualforce page not shown in artcle page layout. See screenshot. I know that visualforce page shown in page layout is visualforce page with standardController related to the object, but I have try Knowledge__kav, Knowledge__ka, and KnowledgeArticle but no luck.

Answer 1

You need to use KnowledgeArticleVersionStandardController

KnowledgeArticleVersionStandardController Class