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1. Glenn Ansley
   Member
   Posted 4 years ago #

   Hi,
   I've set my plugin up to operate with Objects / Classes.
   It works fine until I try to add the register_activation_hook() function. When I do this, it is causing my initial class to be redefined and I get an error on activation:

   Plugin could not be activated because it triggered a fatal error. Fatal error: Cannot redeclare class

   My digging around has led me to believe that the above function must reload my file somehow... i'm not sure.

   How do I use this properly if I've already defined my class. I've tried placing the function inside the class, outside the class, inside/outside isset() functions... Could someone point me in the correct direction? The code for my file is below. Again, if I were to comment out the register_activation_hook, it works correctly
   

   Class ClassName {
   	//this method sets the plugin up upon activation
   	function wpClassSetup(){
   		update_option('test','test');
   	}
   }
   
   if( class_exists('ClassName') ){
   	if( !isset($wpClassName) ) {
   		$wpClassName = new ClassName;
   	}
   }
   
   if( isset($wpClassName) ){
   	//Register plugin
   	register_activation_hook(__FILE__, array(&$wpClassName,'wpClassSetup') );

2. nickohrn
   Member
   Posted 4 years ago #

   The following is what I generally do. Try it if you can.

   if( !class_exists( 'ClassName' ) ) {
     class ClassName {
       function ClassName() { }
       function wpClassSetup() { /* Stuff */ }
     }
   }
   
   if( class_exists( 'ClassName' ) ) {
     $cn = new ClassName;
     // Register for activation
     register_activation_hook( __FILE__, array( &$cn, 'wpClassSetup' );
   }

3. Glenn Ansley
   Member
   Posted 4 years ago #

   Thanks again... you've been a lot of help over the last week.

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