File: /home/iestorre/moodleAW/moodle08/mod/assign/submission/file/locallib.php
<?php
// 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/>.
/**
* This file contains the definition for the library class for file submission plugin
*
* This class provides all the functionality for the new assign module.
*
* @package assignsubmission_file
* @copyright 2012 NetSpot {@link http://www.netspot.com.au}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once($CFG->libdir.'/eventslib.php');
defined('MOODLE_INTERNAL') || die();
// File areas for file submission assignment.
define('ASSIGNSUBMISSION_FILE_MAXFILES', 20);
define('ASSIGNSUBMISSION_FILE_MAXSUMMARYFILES', 5);
define('ASSIGNSUBMISSION_FILE_FILEAREA', 'submission_files');
/**
* Library class for file submission plugin extending submission plugin base class
*
* @package assignsubmission_file
* @copyright 2012 NetSpot {@link http://www.netspot.com.au}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class assign_submission_file extends assign_submission_plugin {
/**
* Get the name of the file submission plugin
* @return string
*/
public function get_name() {
return get_string('file', 'assignsubmission_file');
}
/**
* Get file submission information from the database
*
* @param int $submissionid
* @return mixed
*/
private function get_file_submission($submissionid) {
global $DB;
return $DB->get_record('assignsubmission_file', array('submission'=>$submissionid));
}
/**
* Get the default setting for file submission plugin
*
* @param MoodleQuickForm $mform The form to add elements to
* @return void
*/
public function get_settings(MoodleQuickForm $mform) {
global $CFG, $COURSE;
$defaultmaxfilesubmissions = $this->get_config('maxfilesubmissions');
$defaultmaxsubmissionsizebytes = $this->get_config('maxsubmissionsizebytes');
$settings = array();
$options = array();
for ($i = 1; $i <= ASSIGNSUBMISSION_FILE_MAXFILES; $i++) {
$options[$i] = $i;
}
$name = get_string('maxfilessubmission', 'assignsubmission_file');
$mform->addElement('select', 'assignsubmission_file_maxfiles', $name, $options);
$mform->addHelpButton('assignsubmission_file_maxfiles',
'maxfilessubmission',
'assignsubmission_file');
$mform->setDefault('assignsubmission_file_maxfiles', $defaultmaxfilesubmissions);
$mform->disabledIf('assignsubmission_file_maxfiles', 'assignsubmission_file_enabled', 'notchecked');
$choices = get_max_upload_sizes($CFG->maxbytes,
$COURSE->maxbytes,
get_config('assignsubmission_file', 'maxbytes'));
$settings[] = array('type' => 'select',
'name' => 'maxsubmissionsizebytes',
'description' => get_string('maximumsubmissionsize', 'assignsubmission_file'),
'options'=> $choices,
'default'=> $defaultmaxsubmissionsizebytes);
$name = get_string('maximumsubmissionsize', 'assignsubmission_file');
$mform->addElement('select', 'assignsubmission_file_maxsizebytes', $name, $choices);
$mform->addHelpButton('assignsubmission_file_maxsizebytes',
'maximumsubmissionsize',
'assignsubmission_file');
$mform->setDefault('assignsubmission_file_maxsizebytes', $defaultmaxsubmissionsizebytes);
$mform->disabledIf('assignsubmission_file_maxsizebytes',
'assignsubmission_file_enabled',
'notchecked');
}
/**
* Save the settings for file submission plugin
*
* @param stdClass $data
* @return bool
*/
public function save_settings(stdClass $data) {
$this->set_config('maxfilesubmissions', $data->assignsubmission_file_maxfiles);
$this->set_config('maxsubmissionsizebytes', $data->assignsubmission_file_maxsizebytes);
return true;
}
/**
* File format options
*
* @return array
*/
private function get_file_options() {
$fileoptions = array('subdirs'=>1,
'maxbytes'=>$this->get_config('maxsubmissionsizebytes'),
'maxfiles'=>$this->get_config('maxfilesubmissions'),
'accepted_types'=>'*',
'return_types'=>FILE_INTERNAL);
if ($fileoptions['maxbytes'] == 0) {
// Use module default.
$fileoptions['maxbytes'] = get_config('assignsubmission_file', 'maxbytes');
}
return $fileoptions;
}
/**
* Add elements to submission form
*
* @param mixed $submission stdClass|null
* @param MoodleQuickForm $mform
* @param stdClass $data
* @return bool
*/
public function get_form_elements($submission, MoodleQuickForm $mform, stdClass $data) {
if ($this->get_config('maxfilesubmissions') <= 0) {
return false;
}
$fileoptions = $this->get_file_options();
$submissionid = $submission ? $submission->id : 0;
$data = file_prepare_standard_filemanager($data,
'files',
$fileoptions,
$this->assignment->get_context(),
'assignsubmission_file',
ASSIGNSUBMISSION_FILE_FILEAREA,
$submissionid);
$mform->addElement('filemanager', 'files_filemanager', html_writer::tag('span', $this->get_name(),
array('class' => 'accesshide')), null, $fileoptions);
return true;
}
/**
* Count the number of files
*
* @param int $submissionid
* @param string $area
* @return int
*/
private function count_files($submissionid, $area) {
$fs = get_file_storage();
$files = $fs->get_area_files($this->assignment->get_context()->id,
'assignsubmission_file',
$area,
$submissionid,
'id',
false);
return count($files);
}
/**
* Save the files and trigger plagiarism plugin, if enabled,
* to scan the uploaded files via events trigger
*
* @param stdClass $submission
* @param stdClass $data
* @return bool
*/
public function save(stdClass $submission, stdClass $data) {
global $USER, $DB;
$fileoptions = $this->get_file_options();
$data = file_postupdate_standard_filemanager($data,
'files',
$fileoptions,
$this->assignment->get_context(),
'assignsubmission_file',
ASSIGNSUBMISSION_FILE_FILEAREA,
$submission->id);
$filesubmission = $this->get_file_submission($submission->id);
// Plagiarism code event trigger when files are uploaded.
$fs = get_file_storage();
$files = $fs->get_area_files($this->assignment->get_context()->id,
'assignsubmission_file',
ASSIGNSUBMISSION_FILE_FILEAREA,
$submission->id,
'id',
false);
$count = $this->count_files($submission->id, ASSIGNSUBMISSION_FILE_FILEAREA);
$params = array(
'context' => context_module::instance($this->assignment->get_course_module()->id),
'objectid' => $submission->id,
'other' => array(
'content' => '',
'pathnamehashes' => array_keys($files)
)
);
$event = \assignsubmission_file\event\assessable_uploaded::create($params);
$event->set_legacy_files($files);
$event->trigger();
if ($filesubmission) {
$filesubmission->numfiles = $this->count_files($submission->id,
ASSIGNSUBMISSION_FILE_FILEAREA);
return $DB->update_record('assignsubmission_file', $filesubmission);
} else {
$filesubmission = new stdClass();
$filesubmission->numfiles = $this->count_files($submission->id,
ASSIGNSUBMISSION_FILE_FILEAREA);
$filesubmission->submission = $submission->id;
$filesubmission->assignment = $this->assignment->get_instance()->id;
return $DB->insert_record('assignsubmission_file', $filesubmission) > 0;
}
}
/**
* Produce a list of files suitable for export that represent this feedback or submission
*
* @param stdClass $submission The submission
* @param stdClass $user The user record - unused
* @return array - return an array of files indexed by filename
*/
public function get_files(stdClass $submission, stdClass $user) {
$result = array();
$fs = get_file_storage();
$files = $fs->get_area_files($this->assignment->get_context()->id,
'assignsubmission_file',
ASSIGNSUBMISSION_FILE_FILEAREA,
$submission->id,
'timemodified',
false);
foreach ($files as $file) {
$result[$file->get_filename()] = $file;
}
return $result;
}
/**
* Display the list of files in the submission status table
*
* @param stdClass $submission
* @param bool $showviewlink Set this to true if the list of files is long
* @return string
*/
public function view_summary(stdClass $submission, & $showviewlink) {
$count = $this->count_files($submission->id, ASSIGNSUBMISSION_FILE_FILEAREA);
// Show we show a link to view all files for this plugin?
$showviewlink = $count > ASSIGNSUBMISSION_FILE_MAXSUMMARYFILES;
if ($count <= ASSIGNSUBMISSION_FILE_MAXSUMMARYFILES) {
return $this->assignment->render_area_files('assignsubmission_file',
ASSIGNSUBMISSION_FILE_FILEAREA,
$submission->id);
} else {
return get_string('countfiles', 'assignsubmission_file', $count);
}
}
/**
* No full submission view - the summary contains the list of files and that is the whole submission
*
* @param stdClass $submission
* @return string
*/
public function view(stdClass $submission) {
return $this->assignment->render_area_files('assignsubmission_file',
ASSIGNSUBMISSION_FILE_FILEAREA,
$submission->id);
}
/**
* Return true if this plugin can upgrade an old Moodle 2.2 assignment of this type
* and version.
*
* @param string $type
* @param int $version
* @return bool True if upgrade is possible
*/
public function can_upgrade($type, $version) {
$uploadsingletype ='uploadsingle';
$uploadtype ='upload';
if (($type == $uploadsingletype || $type == $uploadtype) && $version >= 2011112900) {
return true;
}
return false;
}
/**
* Upgrade the settings from the old assignment
* to the new plugin based one
*
* @param context $oldcontext - the old assignment context
* @param stdClass $oldassignment - the old assignment data record
* @param string $log record log events here
* @return bool Was it a success? (false will trigger rollback)
*/
public function upgrade_settings(context $oldcontext, stdClass $oldassignment, & $log) {
global $DB;
if ($oldassignment->assignmenttype == 'uploadsingle') {
$this->set_config('maxfilesubmissions', 1);
$this->set_config('maxsubmissionsizebytes', $oldassignment->maxbytes);
return true;
} else if ($oldassignment->assignmenttype == 'upload') {
$this->set_config('maxfilesubmissions', $oldassignment->var1);
$this->set_config('maxsubmissionsizebytes', $oldassignment->maxbytes);
// Advanced file upload uses a different setting to do the same thing.
$DB->set_field('assign',
'submissiondrafts',
$oldassignment->var4,
array('id'=>$this->assignment->get_instance()->id));
// Convert advanced file upload "hide description before due date" setting.
$alwaysshow = 0;
if (!$oldassignment->var3) {
$alwaysshow = 1;
}
$DB->set_field('assign',
'alwaysshowdescription',
$alwaysshow,
array('id'=>$this->assignment->get_instance()->id));
return true;
}
}
/**
* Upgrade the submission from the old assignment to the new one
*
* @param context $oldcontext The context of the old assignment
* @param stdClass $oldassignment The data record for the old oldassignment
* @param stdClass $oldsubmission The data record for the old submission
* @param stdClass $submission The data record for the new submission
* @param string $log Record upgrade messages in the log
* @return bool true or false - false will trigger a rollback
*/
public function upgrade(context $oldcontext,
stdClass $oldassignment,
stdClass $oldsubmission,
stdClass $submission,
& $log) {
global $DB;
$filesubmission = new stdClass();
$filesubmission->numfiles = $oldsubmission->numfiles;
$filesubmission->submission = $submission->id;
$filesubmission->assignment = $this->assignment->get_instance()->id;
if (!$DB->insert_record('assignsubmission_file', $filesubmission) > 0) {
$log .= get_string('couldnotconvertsubmission', 'mod_assign', $submission->userid);
return false;
}
// Now copy the area files.
$this->assignment->copy_area_files_for_upgrade($oldcontext->id,
'mod_assignment',
'submission',
$oldsubmission->id,
$this->assignment->get_context()->id,
'assignsubmission_file',
ASSIGNSUBMISSION_FILE_FILEAREA,
$submission->id);
return true;
}
/**
* The assignment has been deleted - cleanup
*
* @return bool
*/
public function delete_instance() {
global $DB;
// Will throw exception on failure.
$DB->delete_records('assignsubmission_file',
array('assignment'=>$this->assignment->get_instance()->id));
return true;
}
/**
* Formatting for log info
*
* @param stdClass $submission The submission
* @return string
*/
public function format_for_log(stdClass $submission) {
// Format the info for each submission plugin (will be added to log).
$filecount = $this->count_files($submission->id, ASSIGNSUBMISSION_FILE_FILEAREA);
return get_string('numfilesforlog', 'assignsubmission_file', $filecount);
}
/**
* Return true if there are no submission files
* @param stdClass $submission
*/
public function is_empty(stdClass $submission) {
return $this->count_files($submission->id, ASSIGNSUBMISSION_FILE_FILEAREA) == 0;
}
/**
* Get file areas returns a list of areas this plugin stores files
* @return array - An array of fileareas (keys) and descriptions (values)
*/
public function get_file_areas() {
return array(ASSIGNSUBMISSION_FILE_FILEAREA=>$this->get_name());
}
/**
* Copy the student's submission from a previous submission. Used when a student opts to base their resubmission
* on the last submission.
* @param stdClass $sourcesubmission
* @param stdClass $destsubmission
*/
public function copy_submission(stdClass $sourcesubmission, stdClass $destsubmission) {
global $DB;
// Copy the files across.
$contextid = $this->assignment->get_context()->id;
$fs = get_file_storage();
$files = $fs->get_area_files($contextid,
'assignsubmission_file',
ASSIGNSUBMISSION_FILE_FILEAREA,
$sourcesubmission->id,
'id',
false);
foreach ($files as $file) {
$fieldupdates = array('itemid' => $destsubmission->id);
$fs->create_file_from_storedfile($fieldupdates, $file);
}
// Copy the assignsubmission_file record.
if ($filesubmission = $this->get_file_submission($sourcesubmission->id)) {
unset($filesubmission->id);
$filesubmission->submission = $destsubmission->id;
$DB->insert_record('assignsubmission_file', $filesubmission);
}
return true;
}
/**
* Return a description of external params suitable for uploading a file submission from a webservice.
*
* @return external_description|null
*/
public function get_external_parameters() {
return array(
'files_filemanager' => new external_value(
PARAM_INT,
'The id of a draft area containing files for this submission.'
)
);
}
}