BuddyPress.org

Hello everyone, thanks in advance.

I’m trying to filter messages through ‘messages_message_before_save’ action hook.
When the test is positive, I remove the recipient with unset.
If I have no recipients I get a php error.

[22-Nov-2015 14:25:22 UTC] PHP Fatal error: Call to a member function get_error_message() on a non-object in xxxxxxxxxxxxxx/wp-content/plugins/buddypress/bp-messages/bp-messages-actions.php on line 104

.....bp-messages-actions.php.........
 .................................
// Message could not be sent.
 } else {
    $success  = false;
    $feedback = $send->get_error_message();  //LINE 104 bp-messages-actions.php
 }

It’s because I have not created an error message.
I tried with:

bp_core_add_message( 'Message error.', 'error' );

but don’t works.

How can i fix this?

This is my code.

function messages_control($args){
 if(!is_super_admin()){
   foreach($args->recipients as $key => $value){
     $receiver = $value->user_id;
     if( $receiver === X ){    // X is an integer
       error_log('MESSAGE UNSET');
       unset($args->recipients[$key]);
     } 
    }
    if(empty($args->recipients)){
      bp_core_add_message( 'Message error.', 'error' );  // ????????
    }
 }
}
add_action('messages_message_before_save','messages_control',10,1);

Thanks in advance. Sorry for my english…..