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<?php
///////////////////////////////////////////////////////////////////////////
// //
// NOTICE OF COPYRIGHT //
// //
// Moodle - Modular Object-Oriented Dynamic Learning Environment //
// http://moodle.org //
// //
// Copyright (C) 1999-onwards Moodle Pty Ltd http://moodle.com //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation; either version 2 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License for more details: //
// //
// http://www.gnu.org/copyleft/gpl.html //
// //
///////////////////////////////////////////////////////////////////////////
class data_field_multimenu extends data_field_base {
var $type = 'multimenu';
function display_add_field($recordid=0) {
global $DB;
if ($recordid){
$content = $DB->get_field('data_content', 'content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid));
$content = explode('##', $content);
} else {
$content = array();
}
$str = '<div title="'.s($this->field->description).'">';
$str .= '<input name="field_' . $this->field->id . '[xxx]" type="hidden" value="xxx"/>'; // hidden field - needed for empty selection
$str .= '<label class="accesshide" for="field_' . $this->field->id . '">' . $this->field->name. '</label>';
$str .= '<select name="field_' . $this->field->id . '[]" id="field_' . $this->field->id . '" multiple="multiple">';
foreach (explode("\n",$this->field->param1) as $option) {
$option = trim($option);
$str .= '<option value="' . s($option) . '"';
if (in_array($option, $content)) {
// Selected by user.
$str .= ' selected = "selected"';
}
$str .= '>';
$str .= $option . '</option>';
}
$str .= '</select>';
$str .= '</div>';
return $str;
}
function display_search_field($value = '') {
global $CFG, $DB;
if (is_array($value)){
$content = $value['selected'];
$allrequired = $value['allrequired'] ? true : false;
} else {
$content = array();
$allrequired = false;
}
static $c = 0;
$str = '<label class="accesshide" for="f_' . $this->field->id . '">' . $this->field->name . '</label>';
$str .= '<select id="f_'.$this->field->id.'" name="f_'.$this->field->id.'[]" multiple="multiple">';
// display only used options
$varcharcontent = $DB->sql_compare_text('content', 255);
$sql = "SELECT DISTINCT $varcharcontent AS content
FROM {data_content}
WHERE fieldid=? AND content IS NOT NULL";
$usedoptions = array();
if ($used = $DB->get_records_sql($sql, array($this->field->id))) {
foreach ($used as $data) {
$valuestr = $data->content;
if ($valuestr === '') {
continue;
}
$values = explode('##', $valuestr);
foreach ($values as $value) {
$usedoptions[$value] = $value;
}
}
}
$found = false;
foreach (explode("\n",$this->field->param1) as $option) {
$option = trim($option);
if (!isset($usedoptions[$option])) {
continue;
}
$found = true;
$str .= '<option value="' . s($option) . '"';
if (in_array($option, $content)) {
// Selected by user.
$str .= ' selected = "selected"';
}
$str .= '>' . $option . '</option>';
}
if (!$found) {
// oh, nothing to search for
return '';
}
$str .= '</select>';
$str .= html_writer::checkbox('f_'.$this->field->id.'_allreq', null, $allrequired, get_string('selectedrequired', 'data'));
return $str;
}
function parse_search_field() {
$selected = optional_param_array('f_'.$this->field->id, array(), PARAM_NOTAGS);
$allrequired = optional_param('f_'.$this->field->id.'_allreq', 0, PARAM_BOOL);
if (empty($selected)) {
// no searching
return '';
}
return array('selected'=>$selected, 'allrequired'=>$allrequired);
}
function generate_sql($tablealias, $value) {
global $DB;
static $i=0;
$i++;
$name = "df_multimenu_{$i}_";
$params = array();
$varcharcontent = $DB->sql_compare_text("{$tablealias}.content", 255);
$allrequired = $value['allrequired'];
$selected = $value['selected'];
if ($selected) {
$conditions = array();
$j=0;
foreach ($selected as $sel) {
$j++;
$xname = $name.$j;
$likesel = str_replace('%', '\%', $sel);
$likeselsel = str_replace('_', '\_', $likesel);
$conditions[] = "({$tablealias}.fieldid = {$this->field->id} AND ({$varcharcontent} = :{$xname}a
OR {$tablealias}.content LIKE :{$xname}b
OR {$tablealias}.content LIKE :{$xname}c
OR {$tablealias}.content LIKE :{$xname}d))";
$params[$xname.'a'] = $sel;
$params[$xname.'b'] = "$likesel##%";
$params[$xname.'c'] = "%##$likesel";
$params[$xname.'d'] = "%##$likesel##%";
}
if ($allrequired) {
return array(" (".implode(" AND ", $conditions).") ", $params);
} else {
return array(" (".implode(" OR ", $conditions).") ", $params);
}
} else {
return array(" ", array());
}
}
function update_content($recordid, $value, $name='') {
global $DB;
$content = new stdClass();
$content->fieldid = $this->field->id;
$content->recordid = $recordid;
$content->content = $this->format_data_field_multimenu_content($value);
if ($oldcontent = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
$content->id = $oldcontent->id;
return $DB->update_record('data_content', $content);
} else {
return $DB->insert_record('data_content', $content);
}
}
function format_data_field_multimenu_content($content) {
if (!is_array($content)) {
return NULL;
}
$options = explode("\n", $this->field->param1);
$options = array_map('trim', $options);
$vals = array();
foreach ($content as $key=>$val) {
if ($key === 'xxx') {
continue;
}
if (!in_array($val, $options)) {
continue;
}
$vals[] = $val;
}
if (empty($vals)) {
return NULL;
}
return implode('##', $vals);
}
function display_browse_field($recordid, $template) {
global $DB;
if ($content = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
if (empty($content->content)) {
return false;
}
$options = explode("\n",$this->field->param1);
$options = array_map('trim', $options);
$contentArr = explode('##', $content->content);
$str = '';
foreach ($contentArr as $line) {
if (!in_array($line, $options)) {
// hmm, looks like somebody edited the field definition
continue;
}
$str .= $line . "<br />\n";
}
return $str;
}
return false;
}
}
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