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88 lines
2.7 KiB
PHP
88 lines
2.7 KiB
PHP
<?php //$Id$
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require_once($CFG->dirroot.'/user/filters/lib.php');
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/**
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* User filter based on global roles.
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*/
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class user_filter_globalrole extends user_filter_type {
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/**
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* Constructor
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* @param string $name the name of the filter instance
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* @param string $label the label of the filter instance
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* @param boolean $advanced advanced form element flag
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*/
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function user_filter_globalrole($name, $label, $advanced) {
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parent::user_filter_type($name, $label, $advanced);
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}
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/**
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* Returns an array of available roles
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* @return array of availble roles
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*/
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function get_roles() {
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$context = get_context_instance(CONTEXT_SYSTEM);
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$roles = array(0=> get_string('anyrole','filters')) + get_assignable_roles($context);
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return $roles;
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}
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/**
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* Adds controls specific to this filter in the form.
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* @param object $mform a MoodleForm object to setup
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*/
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function setupForm(&$mform) {
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$obj =& $mform->addElement('select', $this->_name, $this->_label, $this->get_roles());
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$obj->setHelpButton(array('globalrole', $this->_label, 'filters'));
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$mform->setDefault($this->_name, 0);
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if ($this->_advanced) {
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$mform->setAdvanced($this->_name);
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}
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}
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/**
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* Retrieves data from the form data
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* @param object $formdata data submited with the form
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* @return mixed array filter data or false when filter not set
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*/
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function check_data($formdata) {
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$field = $this->_name;
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if (array_key_exists($field, $formdata) and !empty($formdata->$field)) {
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return array('value' => (int)$formdata->$field);
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}
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return false;
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}
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/**
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* Returns the condition to be used with SQL where
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* @param array $data filter settings
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* @return string the filtering condition or null if the filter is disabled
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*/
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function get_sql_filter($data) {
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global $CFG;
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$value = $data['value'];
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$timenow = round(time(), 100);
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return "id IN (SELECT userid
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FROM {$CFG->prefix}role_assignments a
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WHERE a.contextid=".SYSCONTEXTID." AND a.roleid=$value AND a.timestart<$timenow
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AND (a.timeend=0 OR a.timeend>$timenow))";
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}
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/**
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* Returns a human friendly description of the filter used as label.
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* @param array $data filter settings
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* @return string active filter label
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*/
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function get_label($data) {
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$rolename = get_field('role', 'name', 'id', $data['value']);
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$a = new object();
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$a->label = $this->_label;
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$a->value = '"'.format_string($rolename).'"';
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return get_string('globalrolelabel', 'filters', $a);
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}
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}
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