Moodle 4.0 XRef and Diffs

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Developer Documentation
Bug fixes for general core bugs in 4.0.x will end 8 May 2023 (12 months).
Bug fixes for security issues in 4.0.x will end 13 November 2023 (18 months).
PHP version: minimum PHP 7.3.0 Note: the minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is also supported.
Moodle 4.0 Database Schema (by Marcus Green)
/dataformat/html/classes/ -> writer.php (source)
   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  /**
  18   * html data format writer
  19   *
  20   * @package    dataformat_html
  21   * @copyright  2016 Brendan Heywood (brendan@catalyst-au.net)
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  namespace dataformat_html;
  26  
  27  defined('MOODLE_INTERNAL') || die();
  28  
  29  /**
  30   * html data format writer
  31   *
  32   * @package    dataformat_html
  33   * @copyright  2016 Brendan Heywood (brendan@catalyst-au.net)
  34   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  35   */
  36  class writer extends \core\dataformat\base {
  37  
  38      /** @var $mimetype */
  39      public $mimetype = "text/html";
  40  
  41      /** @var $extension */
  42      public $extension = ".html";
  43  
  44      /**
  45       * Write the start of the output
  46       */
  47      public function start_output() {
  48          echo "<!DOCTYPE html><html><head>";
  49          echo \html_writer::empty_tag('meta', ['charset' => 'UTF-8']);
  50          echo \html_writer::tag('title', $this->filename);
  51          echo "<style>
  52  html, body {
  53      margin: 0;
  54      padding: 0;
  55      font-family: sans-serif;
  56      font-size: 13px;
  57      background: #eee;
  58  }
  59  th {
  60      border: solid 1px #999;
  61      background: #eee;
  62  }
  63  td {
  64      border: solid 1px #999;
  65      background: #fff;
  66  }
  67  tr:hover td {
  68      background: #eef;
  69  }
  70  table {
  71      border-collapse: collapse;
  72      border-spacing: 0pt;
  73      width: 80%;
  74      margin: auto;
  75  }
  76  </style>
  77  </head>
  78  <body>";
  79      }
  80  
  81      /**
  82       * Write the start of the sheet we will be adding data to.
  83       *
  84       * @param array $columns
  85       */
  86      public function start_sheet($columns) {
  87          echo "<table border=1 cellspacing=0 cellpadding=3>";
  88          echo \html_writer::start_tag('tr');
  89          foreach ($columns as $k => $v) {
  90              echo \html_writer::tag('th', $v);
  91          }
  92          echo \html_writer::end_tag('tr');
  93      }
  94  
  95      /**
  96       * Method to define whether the dataformat supports export of HTML
  97       *
  98       * @return bool
  99       */
 100      public function supports_html(): bool {
 101          return true;
 102      }
 103  
 104      /**
 105       * Write a single record
 106       *
 107       * @param array $record
 108       * @param int $rownum
 109       */
 110      public function write_record($record, $rownum) {
 111          $record = $this->format_record($record);
 112  
 113          echo \html_writer::start_tag('tr');
 114          foreach ($record as $cell) {
 115              echo \html_writer::tag('td', $cell);
 116          }
 117          echo \html_writer::end_tag('tr');
 118      }
 119  
 120      /**
 121       * Write the end of the sheet containing the data.
 122       *
 123       * @param array $columns
 124       */
 125      public function close_sheet($columns) {
 126          echo "</table>";
 127      }
 128  
 129      /**
 130       * Write the end of the sheet containing the data.
 131       */
 132      public function close_output() {
 133          echo "</body></html>";
 134      }
 135  }