Control modules based on article author

JomGenius version

The JomGenius version is suitable for MetaMod v2.4 and up, and MetaTemplate 1.5 and up

The simplest possible rule checks for a given list of user ids, and assigns module 101 if found:

// this will only be valid on article pages, so we don't need
// to specifically check the page type.
// We'll use module 101 for users 10 and 15.
 
if ( $content_genius->check("article_created_by = 10, 15") ) return 101;

In this one we use "info" to get the information from JomGenius, and compare against different values:

// this will only be valid on article pages, so we don't need
// to specifically check the page type
 
$created_by = $content_genius->info("article_created_by");
if ( $created_by == 10 ) return 101; /* module 101 for user #10 */
if ( $created_by == 15 ) return 102; /* module 102 for used #15 */

Raw PHP/Database version

if ( $option == "com_content" && $view == "article" ) {
 $article_id = (int)$id;
 $query = "SELECT created_by "
  . " FROM #__content WHERE id = '$article_id' AND state = 1";
 $db->setQuery( $query, 0, 1 );
 $row = $db->loadObject();
 
 if ( $row != null ) {
  $created_by = $row->created_by;
 
  /* now put your rules in here... */
  if ( $created_by == 10 ) return 101; /* module 101 for user #10 */
  if ( $created_by == 15 ) return 102; /* module 102 for user #15 */
 }
}