Learndash: bypass course limitations for group leaders

php

/** Helper function to check if current user is a course group leader **/
function bayadaim_is_course_gl($course_id, $user_id){
	$is_course_gl = false;
	
	if($course_id == ''){
		if ( empty( $post) ) {
			global $post;
		}
		if( 'sfwd-lessons' === $post->post_type ){
			$course_id = learndash_get_setting( $post, 'course' );
		}
		elseif( 'sfwd-topic' === $post->post_type ){
			$lesson_id = learndash_get_setting( $post, 'lesson' );
			$course_id = learndash_get_setting( $lesson_id, 'course' );
		}
		elseif( 'sfwd-course' === $post->post_type ){
			$course_id = learndash_get_course_id( $post->ID );
		}
    //probably should add quizz here as well
	}
	
	if($user_id == ''){
		$user_id = get_current_user_id();
	}
	
	$group_ids = learndash_get_course_groups($course_id);
	
	if(!empty($group_ids)){
		foreach($group_ids as $group_id){
			$group_leader_ids = learndash_get_groups_administrator_ids( $group_id );
			
			if(in_array($user_id, $group_leader_ids)){
				$is_course_gl = true;
				continue;
			}
		}
	}else{
		$is_course_gl = false;
	}
	return $is_course_gl;
	
}

/** Give group leader full access to all course content **/

//set bypass to true
function bayadaim_prerequities_bypass( $bypass, $user_id, $post_id, $post ) {
	$check = bayadaim_is_course_gl($course_id, $user_id);
	if ( $check ) {
		$bypass = true;
	}
	return $bypass;		
}
add_filter( 'learndash_prerequities_bypass', 'bayadaim_prerequities_bypass', 10, 4 );

//set previous step as completed
function bayadaim_previous_step_completed($completed, $post_id, $user_id){
	$check = bayadaim_is_course_gl($course_id, $user_id);
	if ( $check ) {
		$completed = true;
	}
	return $completed;	
}
add_filter( 'learndash_previous_step_completed', 'bayadaim_previous_step_completed', 10, 3 );

//show next step link
function bayadaim_show_next_link( $show_next_link = false, $user_id, $post_id ) {
	$check = bayadaim_is_course_gl($course_id, $user_id);
	if ( $check ) {
		$show_next_link = true;
	}
	return $show_next_link;
}
add_filter('learndash_show_next_link', 'bayadaim_show_next_link', 10, 3);