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https://github.com/moodle/moodle.git
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813 lines
28 KiB
PHP
813 lines
28 KiB
PHP
<?php
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// $Id$
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/**
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* This object is a representation of a file-based preset for database activities
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*/
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class Data_Preset
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{
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/**
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* Required files in a preset directory
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* @var array $required_files
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*/
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var $required_files = array('singletemplate.html',
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'listtemplate.html',
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'listtemplateheader.html',
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'listtemplatefooter.html',
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'addtemplate.html',
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'rsstemplate.html',
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'csstemplate.css',
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'jstemplate.js',
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'preset.xml');
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/**
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* The preset's shortname.
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* TODO document
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* @var string $shortname
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*/
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var $shortname;
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/**
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* A database activity object
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* @var object $data
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*/
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var $data;
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/**
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* Directory mapped to this Preset object.
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* @var string $directory
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*/
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var $directory;
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/**
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* This Preset's singletemplate
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* @var string $singletemplate
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*/
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var $singletemplate;
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/**
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* This Preset's listtemplate
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* @var string $listtemplate
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*/
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var $listtemplate;
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/**
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* This Preset's listtemplateheader
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* @var string $listtemplateheader
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*/
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var $listtemplateheader;
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/**
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* This Preset's listtemplatefooter
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* @var string $listtemplatefooter
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*/
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var $listtemplatefooter;
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/**
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* This Preset's addtemplate
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* @var string $addtemplate
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*/
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var $addtemplate;
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/**
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* This Preset's rsstemplate
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* @var string $rsstemplate
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*/
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var $rsstemplate;
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/**
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* This Preset's csstemplate
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* @var string $csstemplate
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*/
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var $csstemplate;
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/**
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* This Preset's jstemplate
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* @var string $jstemplate
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*/
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var $jstemplate;
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/**
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* This Preset's xml
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* @var string $xml
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*/
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var $xml;
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var $user_id;
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/**
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* Constructor
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*/
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function Data_Preset($shortname = null, $data_id = null, $directory = null, $user_id = null)
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{
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$this->shortname = $shortname;
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$this->user_id = $user_id;
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if (empty($directory)) {
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$this->directory = $this->get_path();
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} else {
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$this->directory = $directory;
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}
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if (!empty($data_id)) {
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if (!$this->data = get_record('data', 'id', $data_id)) {
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print_error('wrongdataid','data');
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} else {
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$this->listtemplate = $this->data->listtemplate;
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$this->singletemplate = $this->data->singletemplate;
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$this->listtemplateheader = $this->data->listtemplateheader;
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$this->listtemplatefooter = $this->data->listtemplatefooter;
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$this->addtemplate = $this->data->addtemplate;
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$this->rsstemplate = $this->data->rsstemplate;
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$this->csstemplate = $this->data->csstemplate;
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$this->jstemplate = $this->data->jstemplate;
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}
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}
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}
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/*
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* Returns the best name to show for a preset
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* If the shortname has spaces in it, replace them with underscores.
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* Convert the name to lower case.
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*/
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function best_name($shortname = null) {
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if (empty($shortname)) {
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$shortname = $this->shortname;
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}
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/// We are looking inside the preset itself as a first choice, but also in normal data directory
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$string = get_string('presetname'.$shortname, 'data', NULL, $this->directory.'/lang/');
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if (substr($string, 0, 1) == '[') {
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return strtolower(str_replace(' ', '_', $shortname));
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} else {
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return $string;
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}
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}
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/**
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* TODO figure out what's going on here with the user id. This method doesn't look quite right to me.
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*/
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function get_path() {
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global $USER, $CFG, $COURSE;
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$context = get_context_instance(CONTEXT_COURSE, $COURSE->id);
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if ($this->user_id > 0 && ($this->user_id == $USER->id || has_capability('mod/data:viewalluserpresets', $context))) {
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return $CFG->dataroot.'/data/preset/'.$this->user_id.'/'.$this->shortname;
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} else if ($this->user_id == 0) {
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return $CFG->dirroot.'/mod/data/preset/'.$this->shortname;
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} else if ($this->user_id < 0) {
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return $CFG->dataroot.'/temp/data/'.-$this->user_id.'/'.$this->shortname;
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}
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return 'Does it disturb you that this code will never run?';
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}
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/**
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* A preset is a directory with a number of required files.
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* This function verifies that the given directory contains
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* all these files, thus validating as a preset directory.
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*
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* @param string $directory An optional directory to check. Will use this Preset's directory if not provided.
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* @return mixed True if the directory contains all the files required to qualify as Preset object;
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* an array of the missing filename is returned otherwise
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*/
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function has_all_required_files($directory = null)
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{
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if (empty($directory)) {
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$directory = $this->directory;
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} else {
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$directory = rtrim($directory, '/\\') . '/';
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}
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$missing_files = array();
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foreach ($this->required_files as $file) {
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if(!file_exists($directory . '/' . $file)) {
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$missing_files[] = $file;
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}
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}
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if (!empty($missing_files)) {
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return $missing_files;
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}
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return true;
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}
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/**
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* Deletes all the files in the directory mapped by this Preset object.
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*
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* @return boolean False if an error occured while trying to delete one of the files, true otherwise.
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*/
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function clean_files()
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{
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foreach ($this->required_files as $file) {
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if (!unlink($this->directory . '/' . $file)) {
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return $file;
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}
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}
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return true;
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}
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function get_template_files()
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{
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$template_files = array();
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foreach ($this->required_files as $file) {
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if (preg_match('/^([a-z]+template[a-z]?)\.[a-z]{2,4}$/', $file, $matches)) {
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$template_files[$matches[1]] = $file;
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}
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}
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return $template_files;
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}
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/**
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* Exports this Preset object as a series of files in the Preset's directory.
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* @return string The path/name of the resulting zip file if successful.
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*/
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function export() {
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global $CFG;
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$this->directory = $CFG->dataroot.'/temp';
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// write all templates, but not the xml yet
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$template_files = $this->get_template_files();
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foreach ($template_files as $var => $file) {
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$handle = fopen($this->directory . '/' . $file, 'w');
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fwrite($handle, $this->$var);
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fclose($handle);
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}
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/* All the display data is now done. Now assemble preset.xml */
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$fields = get_records('data_fields', 'dataid', $this->data->id);
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$presetfile = fopen($this->directory.'/preset.xml', 'w');
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$presetxml = "<preset>\n\n";
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/* Database settings first. Name not included? */
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$settingssaved = array('intro',
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'comments',
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'requiredentries',
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'requiredentriestoview',
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'maxentries',
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'rssarticles',
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'approval',
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'scale',
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'assessed',
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'defaultsort',
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'defaultsortdir',
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'editany');
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$presetxml .= "<settings>\n";
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foreach ($settingssaved as $setting) {
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$presetxml .= "<$setting>{$this->data->$setting}</$setting>\n";
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}
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$presetxml .= "</settings>\n\n";
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/* Now for the fields. Grabs all settings that are non-empty */
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if (!empty($fields)) {
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foreach ($fields as $field) {
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$presetxml .= "<field>\n";
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foreach ($field as $key => $value) {
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if ($value != '' && $key != 'id' && $key != 'dataid') {
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$presetxml .= "<$key>$value</$key>\n";
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}
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}
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$presetxml .= "</field>\n\n";
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}
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}
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$presetxml .= "</preset>";
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fwrite($presetfile, $presetxml);
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fclose($presetfile);
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/* Check all is well */
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if (is_array($missing_files = $this->has_all_required_files())) {
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$missing_files = implode(', ', $missing_files);
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print_error('filesnotgenerated', 'data', null, $missing_files);
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}
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// Remove export.zip
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@unlink($this->directory.'/export.zip');
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$filelist = array();
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foreach ($this->required_files as $file) {
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$filelist[$file] = $this->directory . '/' . $file;
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}
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// zip_files is part of moodlelib
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$status = zip_files($filelist, $this->directory.'/export.zip');
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/* made the zip... now return the filename for storage.*/
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return $this->directory.'/export.zip';
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}
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/**
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* Loads the contents of the preset folder to initialise this Preset object.
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* TODO document
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*/
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function load_from_file($directory = null) {
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global $CFG;
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if (empty($directory) && empty($this->directory)) {
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$this->directory = $this->get_path();
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}
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if (is_array($missing_files = $this->has_all_required_files())) {
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$a = new StdClass();
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$a->missing_files = implode(', ', $missing_files);
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$a->directory = $this->directory;
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print_error('directorynotapreset','data', null, $a);
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}
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/* Grab XML */
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$presetxml = file_get_contents($this->directory.'/preset.xml');
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$parsedxml = xmlize($presetxml);
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/* First, do settings. Put in user friendly array. */
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$settingsarray = $parsedxml['preset']['#']['settings'][0]['#'];
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$settings = new StdClass();
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foreach ($settingsarray as $setting => $value) {
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$settings->$setting = $value[0]['#'];
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}
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/* Now work out fields to user friendly array */
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$fieldsarray = $parsedxml['preset']['#']['field'];
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$fields = array();
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foreach ($fieldsarray as $field) {
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$f = new StdClass();
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foreach ($field['#'] as $param => $value) {
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$f->$param = $value[0]['#'];
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}
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$f->dataid = $this->data->id;
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$f->type = clean_param($f->type, PARAM_ALPHA);
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$fields[] = $f;
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}
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/* Now add the HTML templates to the settings array so we can update d */
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$template_files = $this->get_template_files();
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foreach ($template_files as $var => $file) {
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$settings->$var = file_get_contents($this->directory . '/' . $file);
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}
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$settings->instance = $this->data->id;
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/* Now we look at the current structure (if any) to work out whether we need to clear db
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or save the data */
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$currentfields = array();
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$currentfields = get_records('data_fields', 'dataid', $this->data->id);
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$currentfields = array_merge($currentfields);
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return array($settings, $fields, $currentfields);
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}
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/**
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* Import options
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* TODO document
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* TODO replace all output by a return value
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*/
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function get_import_html() {
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if (!confirm_sesskey()) {
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print_error("confirmsesskeybad");
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}
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$strblank = get_string('blank', 'data');
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$strnofields = get_string('nofields', 'data');
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$strcontinue = get_string('continue');
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$strwarning = get_string('mappingwarning', 'data');
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$strfieldmappings = get_string('fieldmappings', 'data');
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$strnew = get_string('new');
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$strold = get_string('old');
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$sesskey = sesskey();
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list($settings, $newfields, $currentfields) = $this->load_from_file();
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$html = '';
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$html .= '<div style="text-align:center"><form action="preset.php" method="post">';
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$html .= '<fieldset class="invisiblefieldset">';
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$html .= '<input type="hidden" name="action" value="finishimport" />';
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$html .= '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
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$html .= '<input type="hidden" name="d" value="'.$this->data->id.'" />';
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$html .= '<input type="hidden" name="fullname" value="'.$this->user_id.'/'.$this->shortname.'" />';
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if (!empty($currentfields) && !empty($newfields)) {
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$html .= "<h3>$strfieldmappings ";
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helpbutton('fieldmappings', '', 'data');
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$html .= '</h3><table>';
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foreach ($newfields as $nid => $newfield) {
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$html .= "<tr><td><label for=\"id_$newfield->name\">$newfield->name</label></td>";
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$html .= '<td><select name="field_'.$nid.'" id="id_'.$newfield->name.'">';
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$selected = false;
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foreach ($currentfields as $cid => $currentfield) {
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if ($currentfield->type == $newfield->type) {
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if ($currentfield->name == $newfield->name) {
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$html .= '<option value="'.$cid.'" selected="selected">'.$currentfield->name.'</option>';
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$selected=true;
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}
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else {
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$html .= '<option value="$cid">'.$currentfield->name.'</option>';
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}
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}
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}
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if ($selected)
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$html .= '<option value="-1">-</option>';
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else
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$html .= '<option value="-1" selected="selected">-</option>';
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$html .= '</select></td></tr>';
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}
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$html .= '</table>';
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$html .= "<p>$strwarning</p>";
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}
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else if (empty($newfields)) {
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print_error('nodefinedfields', 'data');
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}
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$html .= '<input type="submit" value="'.$strcontinue.'" /></fieldset></form></div>';
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return $html;
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}
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/**
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* import()
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* TODO document
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*/
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function import() {
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global $CFG;
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list($settings, $newfields, $currentfields) = $this->load_from_file();
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$preservedfields = array();
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/* Maps fields and makes new ones */
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if (!empty($newfields)) {
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/* We require an injective mapping, and need to know what to protect */
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foreach ($newfields as $nid => $newfield) {
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$cid = optional_param("field_$nid", -1, PARAM_INT);
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if ($cid == -1) continue;
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if (array_key_exists($cid, $preservedfields)) {
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print_error('notinjectivemap', 'data');
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} else {
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$preservedfields[$cid] = true;
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}
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}
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foreach ($newfields as $nid => $newfield) {
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$cid = optional_param("field_$nid", -1, PARAM_INT);
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/* A mapping. Just need to change field params. Data kept. */
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if ($cid != -1 and isset($currentfelds[$cid])) {
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$fieldobject = data_get_field_from_id($currentfields[$cid]->id, $this->data);
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foreach ($newfield as $param => $value) {
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if ($param != "id") {
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$fieldobject->field->$param = $value;
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}
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}
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unset($fieldobject->field->similarfield);
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$fieldobject->update_field();
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unset($fieldobject);
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}
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/* Make a new field */
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else {
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include_once("field/$newfield->type/field.class.php");
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if (!isset($newfield->description)) {
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$newfield->description = '';
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}
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$classname = 'data_field_'.$newfield->type;
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$fieldclass = new $classname($newfield, $this->data);
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$fieldclass->insert_field();
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unset($fieldclass);
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}
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}
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}
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/* Get rid of all old unused data */
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if (!empty($preservedfields)) {
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foreach ($currentfields as $cid => $currentfield) {
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if (!array_key_exists($cid, $preservedfields)) {
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/* Data not used anymore so wipe! */
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print "Deleting field $currentfield->name<br />";
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$id = $currentfield->id;
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// Why delete existing data records and related comments/ratings ??
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/*
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if ($content = get_records('data_content', 'fieldid', $id)) {
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foreach ($content as $item) {
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delete_records('data_ratings', 'recordid', $item->recordid);
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delete_records('data_comments', 'recordid', $item->recordid);
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delete_records('data_records', 'id', $item->recordid);
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}
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}
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*/
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delete_records('data_content', 'fieldid', $id);
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delete_records('data_fields', 'id', $id);
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}
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}
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}
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data_update_instance(addslashes_object($settings));
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if (strstr($this->directory, '/temp/')) clean_preset($this->directory); /* Removes the temporary files */
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return true;
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}
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/**
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* Runs the Preset action method that matches the given action string.
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* @param string $action
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* @return string html
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*/
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function process_action($action, $params)
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{
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echo $action;
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if (in_array("action_$action", get_class_methods(get_class($this)))) {
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return $this->{"action_$action"}($params);
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} else {
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print_error('undefinedprocessactionmethod', 'data', null, $action);
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}
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}
|
|
|
|
////////////////////
|
|
// ACTION METHODS //
|
|
////////////////////
|
|
|
|
function action_base($params)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
function action_confirmdelete($params)
|
|
{
|
|
global $CFG, $USER;
|
|
$html = '';
|
|
$course = $params['course'];
|
|
$shortname = $params['shortname'];
|
|
|
|
if (!confirm_sesskey()) { // GET request ok here
|
|
print_error('confirmsesskeybad');
|
|
}
|
|
|
|
$this->user_id = $params['userid'];
|
|
|
|
if ($this->user_id > 0 and ($this->user_id == $USER->id || has_capability('mod/data:manageuserpresets', $context))) {
|
|
//ok can delete
|
|
} else {
|
|
print_error('invalidrequest');
|
|
}
|
|
|
|
$path = $this->get_path();
|
|
|
|
$strwarning = get_string('deletewarning', 'data').'<br />'.
|
|
data_preset_name($shortname, $path);
|
|
|
|
$options = new object();
|
|
$options->fullname = $this->user_id.'/'.$shortname;
|
|
$options->action = 'delete';
|
|
$options->d = $this->data->id;
|
|
$options->sesskey = sesskey();
|
|
|
|
$optionsno = new object();
|
|
$optionsno->d = $this->data->id;
|
|
notice_yesno($strwarning, 'preset.php', 'preset.php', $options, $optionsno, 'post', 'get');
|
|
$html .= print_footer($course, null, true);
|
|
echo $html;
|
|
exit();
|
|
}
|
|
|
|
function action_delete($params)
|
|
{
|
|
global $CFG, $USER;
|
|
$shortname = $params['shortname'];
|
|
|
|
if (!data_submitted() and !confirm_sesskey()) {
|
|
print_error('invalidrequest');
|
|
}
|
|
|
|
if ($this->user_id > 0 and ($this->user_id == $USER->id || has_capability('mod/data:manageuserpresets', $context))) {
|
|
//ok can delete
|
|
} else {
|
|
print_error('invalidrequest');
|
|
}
|
|
|
|
$this->shortname = $this->best_name($shortname);
|
|
|
|
$this->path = $this->get_path();
|
|
$this->directory = $this->path;
|
|
|
|
if (!$this->clean_files()) {
|
|
print_error('failedpresetdelete', 'data');
|
|
}
|
|
rmdir($this->path);
|
|
|
|
$strdeleted = get_string('deleted', 'data');
|
|
notify("$shortname $strdeleted", 'notifysuccess');
|
|
}
|
|
|
|
function action_importpreset($params)
|
|
{
|
|
$course = $params['course'];
|
|
if (!data_submitted() or !confirm_sesskey()) {
|
|
print_error('invalidrequest');
|
|
}
|
|
|
|
$this->shortname = $params['shortname'];
|
|
$this->data = $params['data'];
|
|
$this->user_id = $params['userid'];
|
|
$html = '';
|
|
$html .= $this->get_import_html();
|
|
|
|
$html .= print_footer($course, null, true);
|
|
echo $html;
|
|
exit();
|
|
}
|
|
|
|
function action_importzip($params)
|
|
{
|
|
global $CFG, $USER;
|
|
$course = $params['course'];
|
|
if (!data_submitted() or !confirm_sesskey()) {
|
|
print_error('invalid_request');
|
|
}
|
|
|
|
if (!make_upload_directory('temp/data/'.$USER->id)) {
|
|
print_error('errorcreatingdirectory', null, null, 'temp/data/' . $USER->id);
|
|
}
|
|
|
|
$this->file = $CFG->dataroot.'/temp/data/'.$USER->id;
|
|
$this->directory = $this->file;
|
|
$this->user_id = $USER->id;
|
|
$this->clean_files($this->file);
|
|
|
|
if (!unzip_file($CFG->dataroot."/$USER->id/$file", $this->file, false)) {
|
|
}
|
|
|
|
$html .= $this->get_import_html();
|
|
$html .= print_footer($course, null, true);
|
|
echo $html;
|
|
exit();
|
|
}
|
|
|
|
function action_finishimport($params)
|
|
{
|
|
if (!data_submitted() or !confirm_sesskey()) {
|
|
print_error('invalidrequest');
|
|
}
|
|
$this->shortname = $this->best_name($this->data->name);
|
|
$this->directory = $this->get_path();
|
|
$this->import();
|
|
|
|
$strimportsuccess = get_string('importsuccess', 'data');
|
|
$straddentries = get_string('addentries', 'data');
|
|
$strtodatabase = get_string('todatabase', 'data');
|
|
if (!get_records('data_records', 'dataid', $this->data->id)) {
|
|
notify('$strimportsuccess <a href="edit.php?d=' . $this->data->id . "\">$straddentries</a> $strtodatabase", 'notifysuccess');
|
|
} else {
|
|
notify("$strimportsuccess", 'notifysuccess');
|
|
}
|
|
}
|
|
|
|
function action_export($params)
|
|
{
|
|
global $CFG, $USER;
|
|
$course = $params['course'];
|
|
$html = '';
|
|
|
|
if (!data_submitted() or !confirm_sesskey()) {
|
|
print_error('invalid_request');
|
|
}
|
|
|
|
$this->shortname = $params['shortname'];
|
|
$this->data = $params['data'];
|
|
|
|
$html .= '<div style="text-align:center">';
|
|
$file = $this->export();
|
|
$html .= get_string('exportedtozip', 'data')."<br />";
|
|
$permanentfile = $CFG->dataroot.'/' . $course->id . '/moddata/data/' . $this->data->id . '/preset.zip';
|
|
@unlink($permanentfile);
|
|
/* is this created elsewhere? sometimes its not present... */
|
|
make_upload_directory($course->id . '/moddata/data/' . $this->data->id);
|
|
|
|
/* now just move the zip into this folder to allow a nice download */
|
|
if (!rename($file, $permanentfile)) {
|
|
print_error('movezipfailed', 'data');
|
|
}
|
|
|
|
$html .= '<a href="' . $CFG->wwwroot . '/file.php/' . $course->id . '/moddata/data/' . $this->data->id . '/preset.zip">'.get_string('download', 'data')."</a>";
|
|
$html .= '</div>';
|
|
return $html;
|
|
}
|
|
|
|
/**
|
|
* First stage of saving a Preset: ask for a name
|
|
*/
|
|
function action_save1($params)
|
|
{
|
|
$html = '';
|
|
$sesskey = $params['sesskey'];
|
|
$course = $params['course'];
|
|
if (!data_submitted() or !confirm_sesskey()) {
|
|
print_error('invalid_request');
|
|
}
|
|
|
|
$strcontinue = get_string('continue');
|
|
$strwarning = get_string('presetinfo', 'data');
|
|
$strname = get_string('shortname');
|
|
|
|
$html .= '<div style="text-align:center">';
|
|
$html .= '<p>'.$strwarning.'</p>';
|
|
$html .= '<form action="preset.php" method="post">';
|
|
$html .= '<fieldset class="invisiblefieldset">';
|
|
$html .= '<label for="shortname">'.$strname.'</label> <input type="text" id="shortname" name="name" value="'.$this->best_name($this->data->name).'" />';
|
|
$html .= '<input type="hidden" name="action" value="save2" />';
|
|
$html .= '<input type="hidden" name="d" value="'.$this->data->id.'" />';
|
|
$html .= '<input type="hidden" name="sesskey" value="'.$sesskey.'" />';
|
|
$html .= '<input type="submit" value="'.$strcontinue.'" /></fieldset></form></div>';
|
|
$html .= print_footer($course, null, true);
|
|
echo $html;
|
|
exit();
|
|
}
|
|
|
|
/**
|
|
* Second stage of saving a preset: If the given name already exists,
|
|
* suggest to use a different name or offer to overwrite the existing preset.
|
|
*/
|
|
function action_save2($params)
|
|
{
|
|
$course = $params['course'];
|
|
$this->data = $params['data'];
|
|
|
|
global $CFG, $USER;
|
|
if (!data_submitted() or !confirm_sesskey()) {
|
|
print_error('invalid_request');
|
|
}
|
|
|
|
$strcontinue = get_string('continue');
|
|
$stroverwrite = get_string('overwrite', 'data');
|
|
$strname = get_string('shortname');
|
|
|
|
$name = $this->best_name(optional_param('name', $this->data->name, PARAM_FILE));
|
|
$this->shortname = $name;
|
|
|
|
if (!is_array($this->has_all_required_files("$CFG->dataroot/data/preset/$USER->id/$name"))) {
|
|
notify("Preset already exists: Pick another name or overwrite ($CFG->dataroot/data/preset/$USER->id/$name)");
|
|
|
|
$html .= '<div style="text-align:center">';
|
|
$html .= '<form action="preset.php" method="post">';
|
|
$html .= '<fieldset class="invisiblefieldset">';
|
|
$html .= '<label for="shortname">'.$strname.'</label> <input id="shortname" type="text" name="name" value="'.$name.'" />';
|
|
$html .= '<input type="hidden" name="action" value="save2" />';
|
|
$html .= '<input type="hidden" name="d" value="'.$this->data->id.'" />';
|
|
$html .= '<input type="hidden" name="sesskey" value="'.$sesskey.'" />';
|
|
$html .= '<input type="submit" value="'.$strcontinue.'" /></fieldset></form>';
|
|
|
|
$html .= '<form action="preset.php" method="post">';
|
|
$html .= '<div>';
|
|
$html .= '<input type="hidden" name="name" value="'.$name.'" />';
|
|
$html .= '<input type="hidden" name="action" value="save3" />';
|
|
$html .= '<input type="hidden" name="d" value="'.$this->data->id.'" />';
|
|
$html .= '<input type="hidden" name="sesskey" value="'.$sesskey.'" />';
|
|
$html .= '<input type="submit" value="'.$stroverwrite.'" /></div></form>';
|
|
$html .= '</div>';
|
|
$html .= print_footer($course, null, true);
|
|
echo $html;
|
|
exit();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Third stage of saving a preset, overwrites an existing preset with the new one.
|
|
*/
|
|
function action_save3($params)
|
|
{
|
|
global $CFG, $USER;
|
|
if (!data_submitted() or !confirm_sesskey()) {
|
|
print_error('invalidrequest');
|
|
}
|
|
|
|
$name = $this->best_name(optional_param('name', $this->data->name, PARAM_FILE));
|
|
$this->directory = "/data/preset/$USER->id/$name";
|
|
$this->shortname = $name;
|
|
$this->user_id = $USER->id;
|
|
|
|
make_upload_directory($this->directory);
|
|
$this->clean_files($CFG->dataroot.$this->directory);
|
|
|
|
$file = $this->export();
|
|
if (!unzip_file($file, $CFG->dataroot.$this->directory, false)) {
|
|
print_error('cannotunzipfile');
|
|
}
|
|
notify(get_string('savesuccess', 'data'), 'notifysuccess');
|
|
}
|
|
}
|
|
|
|
?>
|