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simpleselect.php
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simpleselect.php
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<?php
require_once($CFG->dirroot.'/user/filters/lib.php');
/**
* Generic filter based on a list of values.
*/
class user_filter_simpleselect extends user_filter_type {
/**
* options for the list values
*/
var $_options;
var $_field;
/**
* Constructor
* @param string $name the name of the filter instance
* @param string $label the label of the filter instance
* @param boolean $advanced advanced form element flag
* @param string $field user table filed name
* @param array $options select options
*/
function user_filter_simpleselect($name, $label, $advanced, $field, $options) {
parent::user_filter_type($name, $label, $advanced);
$this->_field = $field;
$this->_options = $options;
}
/**
* Adds controls specific to this filter in the form.
* @param object $mform a MoodleForm object to setup
*/
function setupForm(&$mform) {
$choices = array(''=>get_string('anyvalue', 'filters')) + $this->_options;
$mform->addElement('select', $this->_name, $this->_label, $choices);
$mform->setHelpButton($this->_name, array('simpleselect', $this->_label, 'filters'));
if ($this->_advanced) {
$mform->setAdvanced($this->_name);
}
}
/**
* Retrieves data from the form data
* @param object $formdata data submited with the form
* @return mixed array filter data or false when filter not set
*/
function check_data($formdata) {
$field = $this->_name;
if (array_key_exists($field, $formdata) and $formdata->$field !== '') {
return array('value'=>(string)$formdata->$field);
}
return false;
}
/**
* Returns the condition to be used with SQL where
* @param array $data filter settings
* @return array sql string and $params
*/
function get_sql_filter($data) {
static $counter = 0;
$name = 'ex_simpleselect'.$counter++;
$value = $data['value'];
$params = array();
$field = $this->_field;
if ($value == '') {
return '';
}
return array("$field=:$name", array($name=>$value));
}
/**
* Returns a human friendly description of the filter used as label.
* @param array $data filter settings
* @return string active filter label
*/
function get_label($data) {
$value = $data['value'];
$a = new object();
$a->label = $this->_label;
$a->value = '"'.s($this->_options[$value]).'"';
$a->operator = get_string('isequalto','filters');
return get_string('selectlabel', 'filters', $a);
}
}