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254 lines
11 KiB
PHP
254 lines
11 KiB
PHP
<?php // $Id$
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// Allows a user to import outcomes (and associated scales)
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///////////////////////////////////////////////////////////////////////////
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// //
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// NOTICE OF COPYRIGHT //
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// //
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// Moodle - Modular Object-Oriented Dynamic Learning Environment //
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// http://moodle.com //
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// //
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// Copyright (C) 1999 onwards Martin Dougiamas http://moodle.com //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation; either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details: //
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// //
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// http://www.gnu.org/copyleft/gpl.html //
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// //
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///////////////////////////////////////////////////////////////////////////
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/// THIS SCRIPT IS CALLED WITH "require_once()" FROM index.php
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if (!defined('MOODLE_INTERNAL')) {
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die('Direct access to this script is forbidden.');
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}
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$courseid = optional_param('id', 0, PARAM_INT);
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$action = optional_param('action', '', PARAM_ALPHA);
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$scope = optional_param('scope', 'global', PARAM_ALPHA);
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/// Make sure they can even access this course
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if ($courseid) {
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if (!$course = get_record('course', 'id', $courseid)) {
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print_error('nocourseid');
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}
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require_login($course);
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$context = get_context_instance(CONTEXT_COURSE, $course->id);
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if (empty($CFG->enableoutcomes)) {
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redirect('../../index.php?id='.$courseid);
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}
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} else {
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require_once $CFG->libdir.'/adminlib.php';
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admin_externalpage_setup('outcomes');
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$context = get_context_instance(CONTEXT_SYSTEM);
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}
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require_capability('moodle/grade:manageoutcomes', $context);
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$strgrades = get_string('grades');
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$pagename = get_string('outcomes', 'grades');
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$navigation = grade_build_nav(__FILE__, $pagename, $courseid);
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$strshortname = get_string('shortname');
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$strfullname = get_string('fullname');
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$strscale = get_string('scale');
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$strstandardoutcome = get_string('outcomesstandard', 'grades');
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$strcustomoutcomes = get_string('outcomescustom', 'grades');
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$strdelete = get_string('delete');
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$stredit = get_string('edit');
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$srtcreatenewoutcome = get_string('outcomecreate', 'grades');
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$stritems = get_string('items', 'grades');
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$strcourses = get_string('courses');
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$stredit = get_string('edit');
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$strexport = get_string('export', 'grades');
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if (!confirm_sesskey()) {
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break;
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}
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$systemcontext = get_context_instance(CONTEXT_SYSTEM);
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$caneditsystemscales = has_capability('moodle/course:managescales', $systemcontext);
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if ($courseid) {
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/// Print header
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print_header_simple($strgrades.': '.$pagename, ': '.$strgrades, $navigation, '', '', true, '', navmenu($course));
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/// Print the plugin selector at the top
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print_grade_plugin_selector($courseid, 'edit', 'outcome');
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$caneditcoursescales = has_capability('moodle/course:managescales', $context);
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$currenttab = 'outcomes';
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require('tabs.php');
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} else {
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admin_externalpage_print_header();
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$caneditcoursescales = $caneditsystemscales;
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}
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$imported_file = $upload_form->_upload_manager->files;
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if ($imported_file['userfile']['size'] == 0) {
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redirect('index.php'. ($courseid ? "?id=$courseid" : ''), get_string('importfilemissing', 'grades'));
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}
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/// which scope are we importing the outcomes in?
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if (isset($courseid) && ($scope == 'local')) {
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// custom scale
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$local_scope = true;
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} elseif (($scope == 'global') && has_capability('moodle/grade:manage', get_context_instance(CONTEXT_SYSTEM))) {
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// global scale
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$local_scope = false;
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} else {
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// shouldn't happen .. user might be trying to access this script without the right permissions.
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redirect('index.php', get_string('importerror', 'grades'));
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}
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// open the file, start importing data
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if ($handle = fopen($imported_file['userfile']['tmp_name'], 'r')) {
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$line = 0; // will keep track of current line, to give better error messages.
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$file_headers = '';
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// $csv_data needs to have at least these columns, the value is the default position in the data file.
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$headers = array('outcome_name' => 0, 'outcome_shortname' => 1, 'scale_name' => 3, 'scale_items' => 4);
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$optional_headers = array('outcome_description'=>2, 'scale_description' => 5);
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$imported_headers = array(); // will later be initialized with the values found in the file
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// data should be separated by a ';'. *NOT* by a comma! TODO: version 2.0
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// or whenever we can depend on PHP5, set the second parameter (8192) to 0 (unlimited line length) : the database can store over 128k per line.
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while ( $csv_data = fgetcsv($handle, 8192, ';', '"')) { // if the line is over 8k, it won't work...
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$line++;
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// be tolerant on input, as fgetcsv returns "an array comprising a single null field" on blank lines
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if ($csv_data == array(null)) {
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continue;
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}
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// on first run, grab and analyse the header
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if ($file_headers == '') {
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$file_headers = array_flip($csv_data); // save the header line ... TODO: use the header line to let import work with columns in arbitrary order
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$error = false;
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foreach($headers as $key => $value) {
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// sanity check #1: make sure the file contains all the mandatory headers
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if (!array_key_exists($key, $file_headers)) {
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$error = true;
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break;
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}
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}
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if ($error) {
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print_box(get_string('importoutcomenofile', 'grades', $line));
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break;
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}
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foreach(array_merge($headers, $optional_headers) as $header => $position) {
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// match given columns to expected columns *into* $headers
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$imported_headers[$header] = $file_headers[$header];
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}
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continue; // we don't import headers
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}
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// sanity check #2: every line must have the same number of columns as there are
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// headers. If not, processing stops.
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if ( count($csv_data) != count($file_headers) ) {
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print_box(get_string('importoutcomenofile', 'grades', $line));
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//print_box(var_export($csv_data, true) ."<br />". var_export($header, true));
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break;
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}
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// sanity check #3: all required fields must be present on the current line.
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foreach ($headers as $header => $position) {
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if ($csv_data[$imported_headers[$header]] == '') {
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print_box(get_string('importoutcomenofile', 'grades', $line));
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break;
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}
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}
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//var_dump($csv_data);
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//$db->debug = 3498723498237; // .. very large randomly-typed random value
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if ($local_scope) {
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$outcome = get_records_select('grade_outcomes', 'shortname = "'. $csv_data[$imported_headers['outcome_shortname']] .'" and courseid = '. $courseid );
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} else {
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$outcome = get_records_select('grade_outcomes', 'shortname = "'. $csv_data[$imported_headers['outcome_shortname']] .'" and courseid is null');
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}
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//var_export($outcome);
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if ($outcome) {
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// already exists, print a message and skip.
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print_box(get_string('importskippedoutcome', 'grades', $csv_data[$imported_headers['outcome_shortname']]));
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continue;
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}
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// new outcome will be added, search for compatible existing scale...
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$scale = get_records_select('scale', 'name ="'. $csv_data[$imported_headers['scale_name']] .'" and scale ="'. $csv_data[$imported_headers['scale_items']] .'" and (courseid = '. $courseid .' or courseid = 0)');
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if ($scale) {
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// already exists in the right scope: use it.
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$scale_id = key($scale);
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} else {
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if (!has_capability('moodle/course:managescales', $context)) {
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print_box(get_string('importskippednomanagescale', 'grades', $csv_data[$imported_headers['outcome_shortname']]));
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continue;
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} else {
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// scale doesn't exists : create it.
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$scale_data = array('name' => $csv_data[$imported_headers['scale_name']],
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'scale' => $csv_data[$imported_headers['scale_items']],
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'description' => $csv_data[$imported_headers['scale_description']],
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'userid' => $USER->id);
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if ($local_scope) {
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$scale_data['courseid'] = $courseid;
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} else {
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$scale_data['courseid'] = 0; // 'global' : scale use '0', outcomes use null
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}
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$scale = new grade_scale($scale_data);
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$scale_id = $scale->insert();
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}
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}
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// add outcome
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$outcome_data = array('shortname' => $csv_data[$imported_headers['outcome_shortname']],
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'fullname' => $csv_data[$imported_headers['outcome_name']],
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'scaleid' => $scale_id,
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'description' => $csv_data[$imported_headers['outcome_description']],
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'usermodified' => $USER->id);
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if ($local_scope) {
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$outcome_data['courseid'] = $courseid;
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} else {
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$outcome_data['courseid'] = null; // 'global' : scale use '0', outcomes use null
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}
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$outcome = new grade_outcome($outcome_data);
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$outcome_id = $outcome->insert();
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$outcome_success_strings = new StdClass();
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$outcome_success_strings->name = $outcome_data['fullname'];
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$outcome_success_strings->id = $outcome_id;
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print_box(get_string('importoutcomesuccess', 'grades', $outcome_success_strings));
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}
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} else {
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print_box(get_string('importoutcomenofile', 'grades', 0));
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}
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// finish
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fclose($handle);
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if ($courseid) {
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print_footer($course);
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} else {
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admin_externalpage_print_footer();
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}
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?>
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