function drop_instructor_capabilities($user_id)
{
if (user_can($user_id, 'manage_options')) {
return;
}
$role = new Instructor($user_id);
$global_option = !is_multisite();
delete_user_option($user_id, 'role_ins', $global_option);
// Legacy
delete_user_meta($user_id, 'role_ins', 'instructor');
$role->remove_cap('can_edit_posts');
$role->remove_cap('read');
$role->remove_cap('upload_files');
$capabilities = array_keys(CoursePress_Capabilities::$capabilities['instructor']);
foreach ($capabilities as $cap) {
$role->remove_cap($cap);
}
CoursePress_Capabilities::grant_private_caps($user_id);
}
<?php
global $wp_roles;
if (isset($_POST['submit']) && current_user_can('manage_options') && isset($_POST['instructor_capability'])) {
/* Set capabilities for each instructor user */
$wp_user_search = new Instructor_Search();
// $wp_user_search = new Instructor_Search( $usersearch, $page_num );
foreach ($wp_user_search->get_results() as $user) {
CoursePress_Capabilities::grant_private_caps($user->ID);
// Don't remove capabilities from administrators
/* if( user_can( $user->ID, 'manage_options' ) ){
continue;
} */
$role = new WP_User($user->ID);
$user_capabilities = $role->wp_capabilities;
// More than the hidden field needs to be present to add roles.
if (isset($_POST['instructor_capability']) && 1 < count($_POST['instructor_capability'])) {
foreach ($user_capabilities as $key => $old_cap) {
// Make sure to only remove CoursePress instructor capabilities
if (!in_array($key, $_POST['instructor_capability']) && in_array($key, array_keys(CoursePress_Capabilities::$capabilities['instructor']))) {
//making the operation less expensive
if (!user_can($user->ID, 'manage_options')) {
$role->remove_cap($key);
}
}
}
foreach ($_POST['instructor_capability'] as $new_cap) {
$role->add_cap($new_cap);
}
} else {
//all unchecked, remove all instructor capabilities
