Example Apex for Submitting Articles from Cases

Now, create and assign the Apex class.

If your organization has installed managed packages from the AppExchange, you can also specify which version of each managed package to use with this class. Use the default values for all versions. This associates the class with the most recent version of Apex and the API, as well as each managed package. You can specify an older version of a managed package if you want to access components or functionality that differs from the most recent package version. You can specify an older version of Apex and the API to maintain specific behavior.

public class AgentContributionArticleController {
    // The constructor must take a ApexPages.KnowledgeArticleVersionStandardController as an argument
    public AgentContributionArticleController(ApexPages.KnowledgeArticleVersionStandardController ctl) {
        SObject article = ctl.getRecord();   //this is the SObject for the new article. 
                                             //It can optionally be cast to the proper article type, e.g. FAQ__kav article = (FAQ__kav) ctl.getRecord();
        
        String sourceId = ctl.getSourceId(); //this returns the id of the case that was closed.
        Case c = [select subject, description from Case where id=:sourceId];
        
        article.put('title', 'From Case: '+c.subject);  //this overrides the default behavior of pre-filling the title of the article with the subject of the closed case. 
        article.put('Details__c',c.description);  
        
        ctl.selectDataCategory('Geography','USA');  //Only one category per category group can be specified.
        ctl.selectDataCategory('Topics','Maintenance');                        
    }