mod/data/field/menu/field.class.php

   1 <?php // $Id$
   2 ///////////////////////////////////////////////////////////////////////////
   3 //                                                                       //
   4 // NOTICE OF COPYRIGHT                                                   //
   5 //                                                                       //
   6 // Moodle - Modular Object-Oriented Dynamic Learning Environment         //
   7 //          http://moodle.org                                            //
   8 //                                                                       //
   9 // Copyright (C) 1999-onwards Moodle Pty Ltd  http://moodle.com          //
  10 //                                                                       //
  11 // This program is free software; you can redistribute it and/or modify  //
  12 // it under the terms of the GNU General Public License as published by  //
  13 // the Free Software Foundation; either version 2 of the License, or     //
  14 // (at your option) any later version.                                   //
  15 //                                                                       //
  16 // This program is distributed in the hope that it will be useful,       //
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of        //
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         //
  19 // GNU General Public License for more details:                          //
  20 //                                                                       //
  21 //          http://www.gnu.org/copyleft/gpl.html                         //
  22 //                                                                       //
  23 ///////////////////////////////////////////////////////////////////////////
  24
  25 class data_field_menu extends data_field_base {
  26
  27     var $type = 'menu';
  28
  29     function data_field_menu($field=0, $data=0) {
  30         parent::data_field_base($field, $data);
  31     }
  32
  33     function display_add_field($recordid=0) {
  34
  35         if ($recordid){
  36             $content = get_field('data_content', 'content', 'fieldid', $this->field->id, 'recordid', $recordid);
  37             $content = trim($content);
  38         } else {
  39             $content = '';
  40         }
  41
  42         $str = '<div title="'.s($this->field->description).'">';
  43
  44         $rawoptions = explode("\n",$this->field->param1);
  45         foreach ($rawoptions as $option) {
  46             $option = trim($option);
  47             if ($option) {
  48                 $options[$option] = $option;
  49             }
  50         }
  51
  52         $str .= choose_from_menu($options, 'field_'.$this->field->id, $content,
  53                                  get_string('menuchoose', 'data'), '', '', true, false, 0, 'field_'.$this->field->id);
  54
  55         $str .= '</div>';
  56
  57         return $str;
  58     }
  59
  60     function display_search_field($content = '') {
  61         global $CFG;
  62
  63         $usedoptions = array();
  64         $sql = "SELECT DISTINCT content
  65                   FROM {$CFG->prefix}data_content
  66                  WHERE fieldid={$this->field->id} AND content IS NOT NULL";
  67         if ($used = get_records_sql($sql)) {
  68             foreach ($used as $data) {
  69                 $value = $data->content;
  70                 if ($value === '') {
  71                     continue;
  72                 }
  73                 $usedoptions[$value] = $value;
  74             }
  75         }
  76
  77         $options = array();
  78         foreach (explode("\n",$this->field->param1) as $option) {
  79             $option = trim($option);
  80             if (!isset($usedoptions[$option])) {
  81                 continue;
  82             }
  83             $options[$option] = $option;
  84         }
  85         if (!$options) {
  86             // oh, nothing to search for
  87             return '';
  88         }
  89
  90         return choose_from_menu($options, 'f_'.$this->field->id, stripslashes($content), '&nbsp;', '', 0, true);
  91     }
  92
  93      function parse_search_field() {
  94             return optional_param('f_'.$this->field->id, '', PARAM_NOTAGS);
  95      }
  96
  97     function generate_sql($tablealias, $value) {
  98         return " ({$tablealias}.fieldid = {$this->field->id} AND {$tablealias}.content = '$value') ";
  99     }
 100
 101 }
 102
 103 ?>