LearnDash Filter Enroll Courses Based on existing RCP membership

sfwd_lms_has_access

/**
 * LearnDash Filter Enroll Courses Based on existing RCP membership
 *
 * This filter allows users to access specific course(s) based on user role or capabilities. 
 *
 * @param int $post_id This is the ID of the Course to check. 
 * @param int $user_id This is the ID of the logged in user to check. 
 * @param $allowed_course_ids array This is an array of the accessible courses if $return is true
 *
 * @return Should be true to grant access to the specified course(s) 
 */
 
 add_filter( 'sfwd_lms_has_access', function( $return, $post_id, $user_id ) { 
    if ( empty( $user_id ) ) {
        if ( !is_user_logged_in() ) {
            return $return;
        } else {
            $user_id = get_current_user_id();
        }
    }
   
    $course_id = learndash_get_course_id( $post_id );
    if( empty($course_id)) {
        return $return; 
    } else {
        $allowed_course_ids = array( ); 
    
        if( !in_array($course_id, $allowed_course_ids)) 
        return $return;
    
        // User must have specified role in order to access the courses listed in the $allowed_course_ids array
        /* if(user_can($user_id, "subscriber")) 
        $return = true;  
    
        Example 2: User must have specified capability in order to access the courses listed in the $allowed_course_ids array
        if(user_can($user_id, "3a_textbook")) 
        $return = true; */
        
         $return = rcp_user_has_active_membership($user_id);
        
        
        } 

    return $return; 
}, 10, 3 );