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<?php
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/**
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* @file
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* Definition of views_plugin_argument_validate_user.
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*/
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/**
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* Validate whether an argument is a valid user.
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*
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* This supports either numeric arguments (UID) or strings (username) and
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* converts either one into the user's UID. This validator also sets the
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* argument's title to the username.
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*/
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class views_plugin_argument_validate_user extends views_plugin_argument_validate {
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/**
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* {@inheritdoc}
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*/
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public function option_definition() {
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$options = parent::option_definition();
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$options['type'] = array('default' => 'uid');
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$options['restrict_roles'] = array('default' => FALSE, 'bool' => TRUE);
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$options['roles'] = array('default' => array());
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return $options;
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}
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/**
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* {@inheritdoc}
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*/
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public function options_form(&$form, &$form_state) {
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$form['type'] = array(
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'#type' => 'radios',
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'#title' => t('Type of user filter value to allow'),
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'#options' => array(
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'uid' => t('Only allow numeric UIDs'),
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'name' => t('Only allow string usernames'),
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'either' => t('Allow both numeric UIDs and string usernames'),
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),
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'#default_value' => $this->options['type'],
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);
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$form['restrict_roles'] = array(
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'#type' => 'checkbox',
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'#title' => t('Restrict user based on role'),
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'#default_value' => $this->options['restrict_roles'],
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);
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$form['roles'] = array(
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'#type' => 'checkboxes',
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'#prefix' => '<div id="edit-options-validate-options-user-roles-wrapper">',
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'#suffix' => '</div>',
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'#title' => t('Restrict to the selected roles'),
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'#options' => array_map('check_plain', user_roles(TRUE)),
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'#default_value' => $this->options['roles'],
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'#description' => t('If no roles are selected, users from any role will be allowed.'),
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'#dependency' => array(
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'edit-options-validate-options-user-restrict-roles' => array(1),
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),
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);
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}
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/**
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* {@inheritdoc}
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*/
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public function options_submit(&$form, &$form_state, &$options = array()) {
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// Filter trash out of the options so we don't store giant unnecessary
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// arrays.
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$options['roles'] = array_filter($options['roles']);
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}
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/**
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* {@inheritdoc}
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*/
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public function convert_options(&$options) {
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if (!isset($options['type']) && isset($this->argument->options['validate_user_argument_type'])) {
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$options['type'] = $this->argument->options['validate_user_argument_type'];
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$options['restrict_roles'] = $this->argument->options['validate_user_restrict_roles'];
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$options['roles'] = $this->argument->options['validate_user_roles'];
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function validate_argument($argument) {
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$type = $this->options['type'];
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// is_numeric() can return false positives, so we ensure it's an integer.
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// However, is_integer() will always fail, since $argument is a string.
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if (is_numeric($argument) && $argument == (int) $argument) {
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if ($type == 'uid' || $type == 'either') {
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if ($argument == $GLOBALS['user']->uid) {
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// If you assign an object to a variable in PHP, the variable
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// automatically acts as a reference, not a copy, so we use
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// clone to ensure that we don't actually mess with the
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// real global $user object.
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$account = clone $GLOBALS['user'];
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}
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$where = 'uid = :argument';
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}
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}
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else {
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if ($type == 'name' || $type == 'either') {
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$name = !empty($GLOBALS['user']->name) ? $GLOBALS['user']->name : variable_get('anonymous', t('Anonymous'));
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if ($argument == $name) {
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$account = clone $GLOBALS['user'];
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}
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$where = "name = :argument";
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}
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}
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// If we don't have a WHERE clause, the argument is invalid.
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if (empty($where)) {
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return FALSE;
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}
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if (!isset($account)) {
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$query = "SELECT uid, name FROM {users} WHERE $where";
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$account = db_query($query, array(':argument' => $argument))->fetchObject();
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}
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if (empty($account)) {
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// User not found.
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return FALSE;
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}
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// See if we're filtering users based on roles.
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if (!empty($this->options['restrict_roles']) && !empty($this->options['roles'])) {
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$roles = $this->options['roles'];
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$account->roles = array();
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$account->roles[] = $account->uid ? DRUPAL_AUTHENTICATED_RID : DRUPAL_ANONYMOUS_RID;
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$result = db_query('SELECT rid FROM {users_roles} WHERE uid = :uid', array(':uid' => $account->uid));
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foreach ($result as $role) {
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$account->roles[] = $role->rid;
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}
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if (!(bool) array_intersect($account->roles, $roles)) {
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return FALSE;
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}
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}
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$this->argument->argument = $account->uid;
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$this->argument->validated_title = check_plain(format_username($account));
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return TRUE;
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}
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/**
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* {@inheritdoc}
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*/
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public function process_summary_arguments(&$args) {
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// If the validation says the input is an username, we should reverse the
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// argument so it works for example for generation summary urls.
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$uids_arg_keys = array_flip($args);
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if ($this->options['type'] == 'name') {
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$users = user_load_multiple($args);
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foreach ($users as $uid => $account) {
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$args[$uids_arg_keys[$uid]] = $account->name;
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}
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}
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}
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}
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