Adds a capability to role.

$role string Required

Role name.

$cap string Required

Capability name.

$grant bool Optional

Whether role is capable of performing capability.

Default: true

Changing the capabilities of a role is persistent, meaning the added capability will stay in effect until explicitly revoked.

This setting is saved to the database (in table wp_options, field wp_user_roles), so it might be better to run this on theme/plugin activation.

File: wp-includes/class-wp-roles.php. View all references

public function add_cap( $role, $cap, $grant = true ) {
	if ( ! isset( $this->roles[ $role ] ) ) {
		return;
	}

	$this->roles[ $role ]['capabilities'][ $cap ] = $grant;
	if ( $this->use_db ) {
		update_option( $this->role_key, $this->roles );
	}
}