WP_Roles::add_cap() │ public │ WP 2.0.0

Adds or removes a capability for the specified role.

Changes to role or user capabilities are written to the database. Therefore this function should be called once, on plugin or theme activation/deactivation.

This is a class method: WP_Roles.

Use WP_User::add_cap() to add/remove a capability for an individual user.

Method of the class: WP_Roles{}

No Hooks.

Returns

null. Does not return anything.

Usage

// для WP
$roles = new WP_Roles( $user_id );
$roles->add_cap( $role, $cap, $grant );

$role(string) (required): Role name: Super Admin, Administrator, Editor, Author, Contributor, Subscriber.
$cap(string) (required): Capability name. Table of roles and their default capabilities.
$grant(boolean): Whether the specified role can use the specified capability. I.e. allow this capability (true) or deny it (false).
Default: true

Examples

#1 Add an option for all users with the "author" role

Allow authors to edit other posts (besides their own):

register_activation_hook( __FILE__, 'add_theme_caps' );

function add_theme_caps() {

	// get the author role. At the same time connect to the WP_Role class
	$role = get_role( 'author' );

	 // add a new feature
	$role->add_cap( 'edit_others_posts' ); 
}

Changelog

Since 2.0.0

Introduced.

`WP_Roles::add_cap() WP Roles::add cap` code ^{WP 7.0}

wp-includes/class-wp-roles.php

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 );
	}
}