phpdoc for capabilities.php. Props jacobsantos. fixes #5632
git-svn-id: http://svn.automattic.com/wordpress/trunk@8904 1a063a9b-81f0-0310-95a4-ce76da25c4cd
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ryan
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@ -1,17 +1,101 @@
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<?php
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/**
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* WordPress Roles and Capabilities.
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*
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* @package WordPress
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* @subpackage User
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*/
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/**
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* WordPress User Roles.
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*
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* The role option is simple, the structure is organized by role name that store
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* the name in value of the 'name' key. The capabilities are stored as an array
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* in the value of the 'capability' key.
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*
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* <code>
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* array (
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* 'rolename' => array (
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* 'name' => 'rolename',
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* 'capabilities' => array()
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* )
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* )
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* </code>
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*
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* @since 2.0.0
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* @package WordPress
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* @subpackage User
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*/
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class WP_Roles {
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/**
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* List of roles and capabilities.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $roles;
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/**
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* List of the role objects.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $role_objects = array();
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/**
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* List of role names.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $role_names = array();
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/**
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* Option name for storing role list.
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*
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* @since 2.0.0
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* @access public
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* @var string
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*/
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var $role_key;
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/**
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* Whether to use the database for retrieval and storage.
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*
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* @since 2.1.0
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* @access public
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* @var bool
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*/
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var $use_db = true;
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/**
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* PHP4 Constructor - Call {@link WP_Roles::_init()} method.
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*
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* @since 2.0.0
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* @access public
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*
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* @return WP_Roles
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*/
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function WP_Roles() {
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$this->_init();
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}
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/**
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* Setup the object properties.
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*
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* The role key is set to the current prefix for the $wpdb object with
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* 'user_roles' appended. If the $wp_user_roles global is set, then it will
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* be used and the role option will not be updated or used.
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*
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* @since 2.1.0
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* @access protected
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* @uses $wpdb Used to get the database prefix.
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* @global array $wp_user_roles Used to set the 'roles' property value.
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*/
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function _init () {
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global $wpdb;
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global $wp_user_roles;
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@ -34,6 +118,19 @@ class WP_Roles {
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}
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}
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/**
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* Add role name with capabilities to list.
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*
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* Updates the list of roles, if the role doesn't already exist.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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* @param string $display_name Role display name.
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* @param array $capabilities List of role capabilities.
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* @return null|WP_Role WP_Role object if role is added, null if already exists.
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*/
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function add_role( $role, $display_name, $capabilities = array() ) {
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if ( isset( $this->roles[$role] ) )
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return;
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@ -49,6 +146,14 @@ class WP_Roles {
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return $this->role_objects[$role];
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}
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/**
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* Remove role by name.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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*/
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function remove_role( $role ) {
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if ( ! isset( $this->role_objects[$role] ) )
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return;
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@ -61,18 +166,46 @@ class WP_Roles {
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update_option( $this->role_key, $this->roles );
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}
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/**
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* Add capability to role.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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* @param string $cap Capability name.
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* @param bool $grant Optional, default is true. Whether role is capable of preforming capability.
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*/
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function add_cap( $role, $cap, $grant = true ) {
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$this->roles[$role]['capabilities'][$cap] = $grant;
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if ( $this->use_db )
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update_option( $this->role_key, $this->roles );
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}
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/**
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* Remove capability from role.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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* @param string $cap Capability name.
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*/
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function remove_cap( $role, $cap ) {
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unset( $this->roles[$role]['capabilities'][$cap] );
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if ( $this->use_db )
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update_option( $this->role_key, $this->roles );
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}
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/**
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* Retrieve role object by name.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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* @return object|null Null, if role does not exist. WP_Role object, if found.
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*/
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function &get_role( $role ) {
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if ( isset( $this->role_objects[$role] ) )
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return $this->role_objects[$role];
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@ -80,25 +213,87 @@ class WP_Roles {
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return null;
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}
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/**
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* Retrieve list of role names.
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*
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* @since 2.0.0
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* @access public
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*
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* @return array List of role names.
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*/
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function get_names() {
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return $this->role_names;
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}
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/**
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* Whether role name is currently in the list of available roles.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name to look up.
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* @return bool
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*/
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function is_role( $role )
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{
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return isset( $this->role_names[$role] );
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}
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}
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/**
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* WordPress Role class.
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*
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* @since 2.0.0
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* @package WordPress
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* @subpackage User
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*/
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class WP_Role {
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/**
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* Role name.
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*
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* @since 2.0.0
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* @access public
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* @var string
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*/
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var $name;
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/**
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* List of capabilities the role contains.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $capabilities;
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/**
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* PHP4 Constructor - Setup object properties.
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*
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* The list of capabilities, must have the key as the name of the capability
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* and the value a boolean of whether it is granted to the role or not.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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* @param array $capabilities List of capabilities.
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* @return WP_Role
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*/
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function WP_Role( $role, $capabilities ) {
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$this->name = $role;
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$this->capabilities = $capabilities;
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}
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/**
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* Assign role a capability.
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*
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* @see WP_Roles::add_cap() Method uses implementation for role.
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* @since 2.0.0
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* @access public
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*
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* @param string $cap Capability name.
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* @param bool $grant Whether role has capability privilege.
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*/
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function add_cap( $cap, $grant = true ) {
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global $wp_roles;
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@ -109,6 +304,19 @@ class WP_Role {
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$wp_roles->add_cap( $this->name, $cap, $grant );
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}
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/**
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* Remove capability from role.
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*
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* This is a container for {@link WP_Roles::remove_cap()} to remove the
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* capability from the role. That is to say, that {@link
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* WP_Roles::remove_cap()} implements the functionality, but it also makes
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* sense to use this class, because you don't need to enter the role name.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $cap Capability name.
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*/
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function remove_cap( $cap ) {
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global $wp_roles;
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@ -119,6 +327,20 @@ class WP_Role {
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$wp_roles->remove_cap( $this->name, $cap );
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}
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/**
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* Whether role has capability.
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*
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* The capabilities is passed through the 'role_has_cap' filter. The first
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* parameter for the hook is the list of capabilities the class has
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* assigned. The second parameter is the capability name to look for. The
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* third and final parameter for the hook is the role name.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $cap Capability name.
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* @return bool True, if user has capability. False, if doesn't have capability.
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*/
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function has_cap( $cap ) {
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$capabilities = apply_filters( 'role_has_cap', $this->capabilities, $cap, $this->name );
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if ( !empty( $capabilities[$cap] ) )
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@ -129,18 +351,117 @@ class WP_Role {
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}
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/**
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* WordPress User class.
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*
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* @since 2.0.0
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* @package WordPress
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* @subpackage User
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*/
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class WP_User {
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/**
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* User data container.
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*
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* This will be set as properties of the object.
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*
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* @since 2.0.0
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* @access private
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* @var array
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*/
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var $data;
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/**
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* The user's ID.
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*
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* @since 2.1.0
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* @access public
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* @var int
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*/
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var $ID = 0;
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var $id = 0; // Deprecated, use $ID instead.
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/**
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* The deprecated user's ID.
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*
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* @since 2.0.0
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* @access public
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* @deprecated Use WP_User::$ID
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* @see WP_User::$ID
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* @var int
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*/
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var $id = 0;
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/**
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* The individual capabilities the user has been given.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $caps = array();
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/**
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* User metadata option name.
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*
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* @since 2.0.0
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* @access public
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* @var string
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*/
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var $cap_key;
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/**
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* The roles the user is part of.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $roles = array();
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/**
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* All capabilities the user has, including individual and role based.
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*
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* @since 2.0.0
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* @access public
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* @var array
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*/
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var $allcaps = array();
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/**
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* First name of the user.
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*
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* Created to prevent notices.
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*
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* @since 2.7.0
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* @access public
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* @var string
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*/
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var $first_name = '';
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/**
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* Last name of the user.
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*
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* Created to prevent notices.
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*
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* @since 2.7.0
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* @access public
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* @var string
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*/
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var $last_name = '';
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/**
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* PHP4 Constructor - Sets up the object properties.
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*
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* Retrieves the userdata and then assigns all of the data keys to direct
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* properties of the object. Calls {@link WP_User::_init_caps()} after
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* setting up the object's user data properties.
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*
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* @since 2.0.0
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* @access public
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*
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* @param int|string $id User's ID or username
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* @param int $name Optional. User's username
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* @return WP_User
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*/
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function WP_User( $id, $name = '' ) {
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if ( empty( $id ) && empty( $name ) )
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@ -167,6 +488,17 @@ class WP_User {
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$this->_init_caps();
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}
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/**
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* Setup capability object properties.
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*
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* Will set the value for the 'cap_key' property to current database table
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* prefix, followed by 'capabilities'. Will then check to see if the
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* property matching the 'cap_key' exists and is an array. If so, it will be
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* used.
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*
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* @since 2.1.0
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* @access protected
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*/
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function _init_caps() {
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global $wpdb;
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$this->cap_key = $wpdb->prefix . 'capabilities';
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@ -176,6 +508,18 @@ class WP_User {
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$this->get_role_caps();
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}
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/**
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* Retrieve all of the role capabilities and merge with individual capabilities.
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*
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* All of the capabilities of the roles the user belongs to are merged with
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* the users individual roles. This also means that the user can be denied
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* specific roles that their role might have, but the specific user isn't
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* granted permission to.
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*
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* @since 2.0.0
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* @uses $wp_roles
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* @access public
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*/
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function get_role_caps() {
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global $wp_roles;
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@ -195,6 +539,16 @@ class WP_User {
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$this->allcaps = array_merge( $this->allcaps, $this->caps );
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}
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/**
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* Add role to user.
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*
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* Updates the user's meta data option with capabilities and roles.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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*/
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function add_role( $role ) {
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$this->caps[$role] = true;
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update_usermeta( $this->ID, $this->cap_key, $this->caps );
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@ -202,6 +556,14 @@ class WP_User {
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$this->update_user_level_from_caps();
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}
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/**
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* Remove role from user.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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*/
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function remove_role( $role ) {
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if ( empty( $this->roles[$role] ) || ( count( $this->roles ) <= 1 ) )
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return;
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@ -210,6 +572,18 @@ class WP_User {
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$this->get_role_caps();
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}
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/**
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* Set the role of the user.
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*
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* This will remove the previous roles of the user and assign the user the
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* new one. You can set the role to an empty string and it will remove all
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* of the roles from the user.
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*
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* @since 2.0.0
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* @access public
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*
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* @param string $role Role name.
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*/
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function set_role( $role ) {
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foreach ( (array) $this->roles as $oldrole )
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unset( $this->caps[$oldrole] );
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|
|
@ -224,6 +598,25 @@ class WP_User {
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$this->update_user_level_from_caps();
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}
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/**
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* Choose the maximum level the user has.
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*
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* Will compare the level from the $item parameter against the $max
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* parameter. If the item is incorrect, then just the $max parameter value
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* will be returned.
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*
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* Used to get the max level based on the capabilities the user has. This
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* is also based on roles, so if the user is assigned the Administrator role
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* then the capability 'level_10' will exist and the user will get that
|
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* value.
|
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*
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* @since 2.0.0
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* @access public
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*
|
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* @param int $max Max level of user.
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* @param string $item Level capability name.
|
||||
* @return int Max Level.
|
||||
*/
|
||||
function level_reduction( $max, $item ) {
|
||||
if ( preg_match( '/^level_(10|[0-9])$/i', $item, $matches ) ) {
|
||||
$level = intval( $matches[1] );
|
||||
|
|
@ -233,23 +626,56 @@ class WP_User {
|
|||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Update the maximum user level for the user.
|
||||
*
|
||||
* Updates the 'user_level' user metadata (includes prefix that is the
|
||||
* database table prefix) with the maximum user level. Gets the value from
|
||||
* the all of the capabilities that the user has.
|
||||
*
|
||||
* @since 2.0.0
|
||||
* @access public
|
||||
*/
|
||||
function update_user_level_from_caps() {
|
||||
global $wpdb;
|
||||
$this->user_level = array_reduce( array_keys( $this->allcaps ), array( &$this, 'level_reduction' ), 0 );
|
||||
update_usermeta( $this->ID, $wpdb->prefix.'user_level', $this->user_level );
|
||||
}
|
||||
|
||||
/**
|
||||
* Add capability and grant or deny access to capability.
|
||||
*
|
||||
* @since 2.0.0
|
||||
* @access public
|
||||
*
|
||||
* @param string $cap Capability name.
|
||||
* @param bool $grant Whether to grant capability to user.
|
||||
*/
|
||||
function add_cap( $cap, $grant = true ) {
|
||||
$this->caps[$cap] = $grant;
|
||||
update_usermeta( $this->ID, $this->cap_key, $this->caps );
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove capability from user.
|
||||
*
|
||||
* @since 2.0.0
|
||||
* @access public
|
||||
*
|
||||
* @param string $cap Capability name.
|
||||
*/
|
||||
function remove_cap( $cap ) {
|
||||
if ( empty( $this->caps[$cap] ) ) return;
|
||||
unset( $this->caps[$cap] );
|
||||
update_usermeta( $this->ID, $this->cap_key, $this->caps );
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove all of the capabilities of the user.
|
||||
*
|
||||
* @since 2.1.0
|
||||
* @access public
|
||||
*/
|
||||
function remove_all_caps() {
|
||||
global $wpdb;
|
||||
$this->caps = array();
|
||||
|
|
@ -258,8 +684,20 @@ class WP_User {
|
|||
$this->get_role_caps();
|
||||
}
|
||||
|
||||
// has_cap( capability_or_role_name ) or
|
||||
// has_cap( 'edit_post', post_id )
|
||||
/**
|
||||
* Whether user has capability or role name.
|
||||
*
|
||||
* This is useful for looking up whether the user has a specific role
|
||||
* assigned to the user. The second optional parameter can also be used to
|
||||
* check for capabilities against a specfic post.
|
||||
*
|
||||
* @since 2.0.0
|
||||
* @access public
|
||||
*
|
||||
* @param string|int $cap Capability or role name to search.
|
||||
* @param int $post_id Optional. Post ID to check capability against specific post.
|
||||
* @return bool True, if user has capability; false, if user does not have capability.
|
||||
*/
|
||||
function has_cap( $cap ) {
|
||||
if ( is_numeric( $cap ) )
|
||||
$cap = $this->translate_level_to_cap( $cap );
|
||||
|
|
@ -278,13 +716,37 @@ class WP_User {
|
|||
return true;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert numeric level to level capability name.
|
||||
*
|
||||
* Prepends 'level_' to level number.
|
||||
*
|
||||
* @since 2.0.0
|
||||
* @access public
|
||||
*
|
||||
* @param int $level Level number, 1 to 10.
|
||||
* @return string
|
||||
*/
|
||||
function translate_level_to_cap( $level ) {
|
||||
return 'level_' . $level;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// Map meta capabilities to primitive capabilities.
|
||||
/**
|
||||
* Map meta capabilities to primitive capabilities.
|
||||
*
|
||||
* This does not actually compare whether the user ID has the actual capability,
|
||||
* just what the capability or capabilities are. Meta capability list value can
|
||||
* be 'delete_user', 'edit_user', 'delete_post', 'delete_page', 'edit_post',
|
||||
* 'edit_page', 'read_post', or 'read_page'.
|
||||
*
|
||||
* @since 2.0.0
|
||||
*
|
||||
* @param string $cap Capability name.
|
||||
* @param int $user_id User ID.
|
||||
* @return array Actual capabilities for meta capability.
|
||||
*/
|
||||
function map_meta_cap( $cap, $user_id ) {
|
||||
$args = array_slice( func_get_args(), 2 );
|
||||
$caps = array();
|
||||
|
|
@ -446,7 +908,14 @@ function map_meta_cap( $cap, $user_id ) {
|
|||
return $caps;
|
||||
}
|
||||
|
||||
// Capability checking wrapper around the global $current_user object.
|
||||
/**
|
||||
* Whether current user has capability or role.
|
||||
*
|
||||
* @since 2.0.0
|
||||
*
|
||||
* @param string $capability Capability or role name.
|
||||
* @return bool
|
||||
*/
|
||||
function current_user_can( $capability ) {
|
||||
$current_user = wp_get_current_user();
|
||||
|
||||
|
|
@ -459,7 +928,15 @@ function current_user_can( $capability ) {
|
|||
return call_user_func_array( array( &$current_user, 'has_cap' ), $args );
|
||||
}
|
||||
|
||||
// Convenience wrappers around $wp_roles.
|
||||
/**
|
||||
* Retrieve role object.
|
||||
*
|
||||
* @see WP_Roles::get_role() Uses method to retrieve role object.
|
||||
* @since 2.0.0
|
||||
*
|
||||
* @param string $role Role name.
|
||||
* @return object
|
||||
*/
|
||||
function get_role( $role ) {
|
||||
global $wp_roles;
|
||||
|
||||
|
|
@ -469,6 +946,17 @@ function get_role( $role ) {
|
|||
return $wp_roles->get_role( $role );
|
||||
}
|
||||
|
||||
/**
|
||||
* Add role, if it does not exist.
|
||||
*
|
||||
* @see WP_Roles::add_role() Uses method to add role.
|
||||
* @since 2.0.0
|
||||
*
|
||||
* @param string $role Role name.
|
||||
* @param string $display_name Display name for role.
|
||||
* @param array $capabilities List of capabilities.
|
||||
* @return null|WP_Role WP_Role object if role is added, null if already exists.
|
||||
*/
|
||||
function add_role( $role, $display_name, $capabilities = array() ) {
|
||||
global $wp_roles;
|
||||
|
||||
|
|
@ -478,6 +966,15 @@ function add_role( $role, $display_name, $capabilities = array() ) {
|
|||
return $wp_roles->add_role( $role, $display_name, $capabilities );
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove role, if it exists.
|
||||
*
|
||||
* @see WP_Roles::remove_role() Uses method to remove role.
|
||||
* @since 2.0.0
|
||||
*
|
||||
* @param string $role Role name.
|
||||
* @return null
|
||||
*/
|
||||
function remove_role( $role ) {
|
||||
global $wp_roles;
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue