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See Release Notes

  • Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
  • Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
  • PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
<?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 // < // // < ///////////////////////////////////////////////////////////////////////////
> // This file is part of Moodle - http://moodle.org/ > // > // Moodle 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 3 of the License, or > // (at your option) any later version. > // > // Moodle 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. > // > // You should have received a copy of the GNU General Public License > // along with Moodle. If not, see <http://www.gnu.org/licenses/>. > > /** > * Class picture field for database activity > * > * @package datafield_picture > * @copyright 2005 Martin Dougiamas > * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later > */
class data_field_picture extends data_field_base { var $type = 'picture'; var $previewwidth = 50; var $previewheight = 50;
> public function supports_preview(): bool { function display_add_field($recordid = 0, $formdata = null) { > return true; global $CFG, $DB, $OUTPUT, $USER, $PAGE; > } > $file = false; > public function get_data_content_preview(int $recordid): stdClass { $content = false; > return (object)[ $alttext = ''; > 'id' => 0, $itemid = null; > 'fieldid' => $this->field->id, $fs = get_file_storage(); > 'recordid' => $recordid, > 'content' => 'datafield_picture/preview', if ($formdata) { > 'content1' => get_string('sample', 'datafield_picture'), $fieldname = 'field_' . $this->field->id . '_file'; > 'content2' => null, $itemid = clean_param($formdata->$fieldname, PARAM_INT); > 'content3' => null, $fieldname = 'field_' . $this->field->id . '_alttext'; > 'content4' => null, if (isset($formdata->$fieldname)) { > ]; $alttext = $formdata->$fieldname; > } } >
} else if ($recordid) {
> // Necessary for the constants used in args. if (!$content = $DB->get_record('data_content', array('fieldid' => $this->field->id, 'recordid' => $recordid))) { > require_once($CFG->dirroot . '/repository/lib.php'); // Quickly make one now! >
$content = new stdClass(); $content->fieldid = $this->field->id; $content->recordid = $recordid; $id = $DB->insert_record('data_content', $content); $content = $DB->get_record('data_content', array('id' => $id)); } file_prepare_draft_area($itemid, $this->context->id, 'mod_data', 'content', $content->id); if (!empty($content->content)) { if ($file = $fs->get_file($this->context->id, 'mod_data', 'content', $content->id, '/', $content->content)) { $usercontext = context_user::instance($USER->id); if ($thumbfile = $fs->get_file($usercontext->id, 'user', 'draft', $itemid, '/', 'thumb_'.$content->content)) { $thumbfile->delete(); } } } $alttext = $content->content1; } else { $itemid = file_get_unused_draft_itemid(); } $str = '<div title="' . s($this->field->description) . '">'; $str .= '<fieldset><legend><span class="accesshide">'.$this->field->name; if ($this->field->required) { $str .= '&nbsp;' . get_string('requiredelement', 'form') . '</span></legend>'; $image = $OUTPUT->pix_icon('req', get_string('requiredelement', 'form')); $str .= html_writer::div($image, 'inline-req'); } else { $str .= '</span></legend>'; } $str .= '<noscript>'; if ($file) { $src = file_encode_url($CFG->wwwroot.'/pluginfile.php/', $this->context->id.'/mod_data/content/'.$content->id.'/'.$file->get_filename()); $str .= '<img width="'.s($this->previewwidth).'" height="'.s($this->previewheight).'" src="'.$src.'" alt="" />'; } $str .= '</noscript>'; $options = new stdClass(); $options->maxbytes = $this->field->param3; $options->maxfiles = 1; // Only one picture permitted. $options->itemid = $itemid; $options->accepted_types = array('web_image'); $options->return_types = FILE_INTERNAL; $options->context = $PAGE->context; if (!empty($file)) { $options->filename = $file->get_filename(); $options->filepath = '/'; } $fm = new form_filemanager($options); // Print out file manager. $output = $PAGE->get_renderer('core', 'files'); $str .= '<div class="mod-data-input">'; $str .= $output->render($fm); $str .= '<div class="mdl-left">'; $str .= '<input type="hidden" name="field_' . $this->field->id . '_file" value="' . s($itemid) . '" />'; $str .= '<label for="field_' . $this->field->id . '_alttext">' . get_string('alttext', 'data') . '</label>&nbsp;<input type="text" class="form-control" name="field_' . $this->field->id . '_alttext" id="field_' . $this->field->id . '_alttext" value="' . s($alttext) . '" />'; $str .= '</div>'; $str .= '</div>'; $str .= '</fieldset>'; $str .= '</div>'; return $str; } /** * Validate the image field type parameters. * * This will check for valid numeric values in the width and height fields. * * @param stdClass $fieldinput the field input data * @return array array of error messages if width or height parameters are not numeric * @throws coding_exception */ public function validate(stdClass $fieldinput): array { $errors = []; // These are the params we have to check if they are numeric, because they represent width and height of the image // in single and list view. $widthandheightparams = ['param1', 'param2', 'param4', 'param5']; foreach ($widthandheightparams as $param) { if (!empty($fieldinput->$param) && !is_numeric($fieldinput->$param)) { $errors[$param] = get_string('error_invalid' . $param, 'datafield_picture'); } } return $errors; } // TODO delete this function and instead subclass data_field_file - see MDL-16493 function get_file($recordid, $content=null) { global $DB; if (empty($content)) { if (!$content = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) { return null; } } $fs = get_file_storage(); if (!$file = $fs->get_file($this->context->id, 'mod_data', 'content', $content->id, '/', $content->content)) { return null; } return $file; } function display_search_field($value = '') { return '<label class="accesshide" for="f_' . $this->field->id . '">' . get_string('fieldname', 'data') . '</label>' . '<input type="text" size="16" id="f_' . $this->field->id . '" name="f_' . $this->field->id . '" ' . 'value="' . s($value) . '" class="form-control"/>'; } public function parse_search_field($defaults = null) { $param = 'f_'.$this->field->id; if (empty($defaults[$param])) { $defaults = array($param => ''); } return optional_param($param, $defaults[$param], PARAM_NOTAGS); } function generate_sql($tablealias, $value) { global $DB; static $i=0; $i++; $name = "df_picture_$i"; return array(" ({$tablealias}.fieldid = {$this->field->id} AND ".$DB->sql_like("{$tablealias}.content", ":$name", false).") ", array($name=>"%$value%")); } function display_browse_field($recordid, $template) {
< global $CFG, $DB;
> global $OUTPUT;
< if (!$content = $DB->get_record('data_content', array('fieldid'=>$this->field->id, 'recordid'=>$recordid))) { < return false; < }
> $content = $this->get_data_content($recordid);
< if (empty($content->content)) {
> if (!$content || empty($content->content)) {
return ''; } $alt = $content->content1; $title = $alt;
< if ($template == 'listtemplate') { < $src = file_encode_url($CFG->wwwroot.'/pluginfile.php', '/'.$this->context->id.'/mod_data/content/'.$content->id.'/'.'thumb_'.$content->content); < // no need to add width/height, because the thumb is resized properly < $str = '<a href="view.php?d='.$this->field->dataid.'&amp;rid='.$recordid.'"><img src="'.$src.'" alt="'.s($alt).'" title="'.s($title).'" class="list_picture"/></a>'; < < } else { < $src = file_encode_url($CFG->wwwroot.'/pluginfile.php', '/'.$this->context->id.'/mod_data/content/'.$content->id.'/'.$content->content);
$width = $this->field->param1 ? ' width="'.s($this->field->param1).'" ':' '; $height = $this->field->param2 ? ' height="'.s($this->field->param2).'" ':' ';
< $str = '<a href="'.$src.'"><img '.$width.$height.' src="'.$src.'" alt="'.s($alt).'" title="'.s($title).'" class="list_picture"/></a>';
> > if ($this->preview) { > $imgurl = $OUTPUT->image_url('sample', 'datafield_picture'); > return '<img ' . $width . $height . ' src="' . $imgurl . '" alt="' . s($alt) . '" class="list_picture"/>';
}
< return $str;
> if ($template == 'listtemplate') { > $filename = 'thumb_' . $content->content; > // Thumbnails are already converted to the correct width and height. > $width = ''; > $height = ''; > $url = new moodle_url('/mod/data/view.php', ['d' => $this->field->dataid, 'rid' => $recordid]); > } else { > $filename = $content->content; > $url = null; > } > $imgurl = moodle_url::make_pluginfile_url($this->context->id, 'mod_data', 'content', $content->id, '/', $filename); > > if (!$url) { > $url = $imgurl; > } > $img = '<img ' . $width . $height . ' src="' . $imgurl->out() . '" alt="' . s($alt) . > '" title="' . s($title) . '" class="list_picture"/>'; > return '<a class="data-field-link" href="' . $url->out() . '">' . $img . '</a>';
} function update_field() { global $DB, $OUTPUT; // Get the old field data so that we can check whether the thumbnail dimensions have changed $oldfield = $DB->get_record('data_fields', array('id'=>$this->field->id)); $DB->update_record('data_fields', $this->field); // Have the thumbnail dimensions changed? if ($oldfield && ($oldfield->param4 != $this->field->param4 || $oldfield->param5 != $this->field->param5)) { // Check through all existing records and update the thumbnail if ($contents = $DB->get_records('data_content', array('fieldid'=>$this->field->id))) { $fs = get_file_storage(); if (count($contents) > 20) { echo $OUTPUT->notification(get_string('resizingimages', 'data'), 'notifysuccess'); echo "\n\n"; // To make sure that ob_flush() has the desired effect ob_flush(); } foreach ($contents as $content) { if (!$file = $fs->get_file($this->context->id, 'mod_data', 'content', $content->id, '/', $content->content)) { continue; } if ($thumbfile = $fs->get_file($this->context->id, 'mod_data', 'content', $content->id, '/', 'thumb_'.$content->content)) { $thumbfile->delete(); } core_php_time_limit::raise(300); // Might be slow! $this->update_thumbnail($content, $file); } } } return true; } function update_content($recordid, $value, $name='') { global $CFG, $DB, $USER; // Should always be available since it is set by display_add_field before initializing the draft area. $content = $DB->get_record('data_content', array('fieldid' => $this->field->id, 'recordid' => $recordid)); if (!$content) { $content = (object)array('fieldid' => $this->field->id, 'recordid' => $recordid); $content->id = $DB->insert_record('data_content', $content); } $names = explode('_', $name); switch ($names[2]) { case 'file': $fs = get_file_storage(); file_save_draft_area_files($value, $this->context->id, 'mod_data', 'content', $content->id); $usercontext = context_user::instance($USER->id); $files = $fs->get_area_files( $this->context->id, 'mod_data', 'content', $content->id, 'itemid, filepath, filename', false); // We expect no or just one file (maxfiles = 1 option is set for the form_filemanager). if (count($files) == 0) { $content->content = null; } else { $file = array_values($files)[0]; if (count($files) > 1) { // This should not happen with a consistent database. Inform admins/developers about the inconsistency. debugging('more then one file found in mod_data instance {$this->data->id} picture field (field id: {$this->field->id}) area during update data record {$recordid} (content id: {$content->id})', DEBUG_NORMAL); } if ($file->get_imageinfo() === false) { $url = new moodle_url('/mod/data/edit.php', array('d' => $this->field->dataid)); redirect($url, get_string('invalidfiletype', 'error', $file->get_filename())); } $content->content = $file->get_filename(); $this->update_thumbnail($content, $file); } $DB->update_record('data_content', $content); break; case 'alttext': // only changing alt tag $content->content1 = clean_param($value, PARAM_NOTAGS); $DB->update_record('data_content', $content); break; default: break; } } function update_thumbnail($content, $file) { // (Re)generate thumbnail image according to the dimensions specified in the field settings. // If thumbnail width and height are BOTH not specified then no thumbnail is generated, and // additionally an attempted delete of the existing thumbnail takes place. $fs = get_file_storage(); $file_record = array('contextid'=>$file->get_contextid(), 'component'=>$file->get_component(), 'filearea'=>$file->get_filearea(), 'itemid'=>$file->get_itemid(), 'filepath'=>$file->get_filepath(), 'filename'=>'thumb_'.$file->get_filename(), 'userid'=>$file->get_userid()); try { // this may fail for various reasons $fs->convert_image($file_record, $file, (int) $this->field->param4, (int) $this->field->param5, true); return true; } catch (Exception $e) { debugging($e->getMessage()); return false; } } function text_export_supported() { return false; } function file_ok($path) { return true; } /** * Custom notempty function * * @param string $value * @param string $name * @return bool */ function notemptyfield($value, $name) { global $USER; $names = explode('_', $name); if ($names[2] == 'file') { $usercontext = context_user::instance($USER->id); $fs = get_file_storage(); $files = $fs->get_area_files($usercontext->id, 'user', 'draft', $value); return count($files) >= 2; } return false; } /** * Return the plugin configs for external functions. * * @return array the list of config parameters * @since Moodle 3.3 */ public function get_config_for_external() { // Return all the config parameters. $configs = []; for ($i = 1; $i <= 10; $i++) { $configs["param$i"] = $this->field->{"param$i"}; } return $configs; } }