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   1  <?php
   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  //2/19/07:  Advanced search of the date field is currently disabled because it does not track
  26  // pre 1970 dates and does not handle blank entrys.  Advanced search functionality for this field
  27  // type can be enabled once these issues are addressed in the core API.
  28  
  29  class data_field_date extends data_field_base {
  30  
  31      var $type = 'date';
  32  
  33      var $day   = 0;
  34      var $month = 0;
  35      var $year  = 0;
  36  
  37      function display_add_field($recordid = 0, $formdata = null) {
  38          global $DB, $OUTPUT;
  39  
  40          if ($formdata) {
  41              $fieldname = 'field_' . $this->field->id . '_day';
  42              $day   = $formdata->$fieldname;
  43              $fieldname = 'field_' . $this->field->id . '_month';
  44              $month   = $formdata->$fieldname;
  45              $fieldname = 'field_' . $this->field->id . '_year';
  46              $year   = $formdata->$fieldname;
  47  
  48              $calendartype = \core_calendar\type_factory::get_calendar_instance();
  49              $gregoriandate = $calendartype->convert_to_gregorian($year, $month, $day);
  50              $content = make_timestamp(
  51                  $gregoriandate['year'],
  52                  $gregoriandate['month'],
  53                  $gregoriandate['day'],
  54                  $gregoriandate['hour'],
  55                  $gregoriandate['minute'],
  56                  0,
  57                  0,
  58                  false);
  59          } else if ($recordid) {
  60              $content = (int)$DB->get_field('data_content', 'content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid));
  61          } else {
  62              $content = time();
  63          }
  64  
  65          $str = '<div title="'.s($this->field->description).'" class="mod-data-input">';
  66          $dayselector = html_writer::select_time('days', 'field_'.$this->field->id.'_day', $content);
  67          $monthselector = html_writer::select_time('months', 'field_'.$this->field->id.'_month', $content);
  68          $yearselector = html_writer::select_time('years', 'field_'.$this->field->id.'_year', $content);
  69          $str .= $dayselector . $monthselector . $yearselector;
  70          $str .= '</div>';
  71  
  72          return $str;
  73      }
  74  
  75      //Enable the following three functions once core API issues have been addressed.
  76      function display_search_field($value=0) {
  77          $selectors = html_writer::select_time('days', 'f_'.$this->field->id.'_d', $value['timestamp'])
  78             . html_writer::select_time('months', 'f_'.$this->field->id.'_m', $value['timestamp'])
  79             . html_writer::select_time('years', 'f_'.$this->field->id.'_y', $value['timestamp']);
  80          $datecheck = html_writer::checkbox('f_'.$this->field->id.'_z', 1, $value['usedate']);
  81          $str = $selectors . ' ' . $datecheck . ' ' . get_string('usedate', 'data');
  82  
  83          return $str;
  84      }
  85  
  86      function generate_sql($tablealias, $value) {
  87          global $DB;
  88  
  89          static $i=0;
  90          $i++;
  91          $name = "df_date_$i";
  92          $varcharcontent = $DB->sql_compare_text("{$tablealias}.content");
  93          return array(" ({$tablealias}.fieldid = {$this->field->id} AND $varcharcontent = :$name) ", array($name => $value['timestamp']));
  94      }
  95  
  96      function parse_search_field() {
  97          $day   = optional_param('f_'.$this->field->id.'_d', 0, PARAM_INT);
  98          $month = optional_param('f_'.$this->field->id.'_m', 0, PARAM_INT);
  99          $year  = optional_param('f_'.$this->field->id.'_y', 0, PARAM_INT);
 100          $usedate = optional_param('f_'.$this->field->id.'_z', 0, PARAM_INT);
 101          $data = array();
 102          if (!empty($day) && !empty($month) && !empty($year) && $usedate == 1) {
 103              $calendartype = \core_calendar\type_factory::get_calendar_instance();
 104              $gregoriandate = $calendartype->convert_to_gregorian($year, $month, $day);
 105  
 106              $data['timestamp'] = make_timestamp(
 107                  $gregoriandate['year'],
 108                  $gregoriandate['month'],
 109                  $gregoriandate['day'],
 110                  $gregoriandate['hour'],
 111                  $gregoriandate['minute'],
 112                  0,
 113                  0,
 114                  false);
 115              $data['usedate'] = 1;
 116              return $data;
 117          } else {
 118              return 0;
 119          }
 120      }
 121  
 122      function update_content($recordid, $value, $name='') {
 123          global $DB;
 124  
 125          $names = explode('_',$name);
 126          $name = $names[2];          // day month or year
 127  
 128          $this->$name = $value;
 129  
 130          if ($this->day and $this->month and $this->year) {  // All of them have been collected now
 131  
 132              $content = new stdClass();
 133              $content->fieldid = $this->field->id;
 134              $content->recordid = $recordid;
 135  
 136              $calendartype = \core_calendar\type_factory::get_calendar_instance();
 137              $gregoriandate = $calendartype->convert_to_gregorian($this->year, $this->month, $this->day);
 138              $content->content = make_timestamp(
 139                  $gregoriandate['year'],
 140                  $gregoriandate['month'],
 141                  $gregoriandate['day'],
 142                  $gregoriandate['hour'],
 143                  $gregoriandate['minute'],
 144                  0,
 145                  0,
 146                  false);
 147  
 148              if ($oldcontent = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
 149                  $content->id = $oldcontent->id;
 150                  return $DB->update_record('data_content', $content);
 151              } else {
 152                  return $DB->insert_record('data_content', $content);
 153              }
 154          }
 155      }
 156  
 157      function display_browse_field($recordid, $template) {
 158          global $CFG, $DB;
 159  
 160          if ($content = $DB->get_field('data_content', 'content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) {
 161              return userdate($content, get_string('strftimedate'), 0);
 162          }
 163      }
 164  
 165      function get_sort_sql($fieldname) {
 166          global $DB;
 167          return $DB->sql_cast_char2int($fieldname, true);
 168      }
 169  
 170  
 171  }