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Long Term Support Release
<?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/>. /** * Search area for mod_data activity entries. * * @package mod_data * @copyright 2016 Devang Gaur * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ namespace mod_data\search; use mod_data\manager; defined('MOODLE_INTERNAL') || die(); require_once($CFG->dirroot . '/mod/data/lib.php'); require_once($CFG->dirroot . '/lib/grouplib.php'); /** * Search area for mod_data activity entries. * * @package mod_data * @copyright 2016 Devang Gaur * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ class entry extends \core_search\base_mod { /** * @var array Internal quick static cache. */ protected $entriesdata = array(); /** * Returns recordset containing required data for indexing database entries. * * @param int $modifiedfrom timestamp * @param \context|null $context Optional context to restrict scope of returned results * @return moodle_recordset|null Recordset (or null if no results) */ public function get_document_recordset($modifiedfrom = 0, \context $context = null) { global $DB; list ($contextjoin, $contextparams) = $this->get_context_restriction_sql( $context, 'data', 'd', SQL_PARAMS_NAMED); if ($contextjoin === null) { return null; } $sql = "SELECT dr.*, d.course FROM {data_records} dr JOIN {data} d ON d.id = dr.dataid $contextjoin WHERE dr.timemodified >= :timemodified"; return $DB->get_recordset_sql($sql, array_merge($contextparams, ['timemodified' => $modifiedfrom])); } /** * Returns the documents associated with this glossary entry id. * * @param stdClass $entry glossary entry. * @param array $options * @return \core_search\document */ public function get_document($entry, $options = array()) { try { $cm = $this->get_cm('data', $entry->dataid, $entry->course); $context = \context_module::instance($cm->id); } catch (\dml_missing_record_exception $ex) { // Notify it as we run here as admin, we should see everything. debugging('Error retrieving mod_data ' . $entry->id . ' document, not all required data is available: ' . $ex->getMessage(), DEBUG_DEVELOPER); return false; } catch (\dml_exception $ex) { // Notify it as we run here as admin, we should see everything. debugging('Error retrieving mod_data' . $entry->id . ' document: ' . $ex->getMessage(), DEBUG_DEVELOPER); return false; } // Prepare associative array with data from DB. $doc = \core_search\document_factory::instance($entry->id, $this->componentname, $this->areaname); $doc->set('contextid', $context->id); $doc->set('courseid', $entry->course); $doc->set('userid', $entry->userid); if ($entry->groupid > 0) { $doc->set('groupid', $entry->groupid); } $doc->set('owneruserid', \core_search\manager::NO_OWNER_ID); $doc->set('modified', $entry->timemodified); $indexfields = $this->get_fields_for_entries($entry); if (count($indexfields) < 2) { return false; } // All fields should be already returned as plain text by data_field_base::get_content_value. $doc->set('title', $indexfields[0]); $doc->set('content', $indexfields[1]); if (isset($indexfields[2])) { $doc->set('description1', $indexfields[2]); } if (isset($indexfields[3])) { $doc->set('description2', $indexfields[3]); } return $doc; } /** * Whether the user can access the document or not. * * @throws \dml_missing_record_exception * @throws \dml_exception * @param int $id Glossary entry id * @return bool */ public function check_access($id) { global $DB, $USER; if (isguestuser()) { return \core_search\manager::ACCESS_DENIED; } $now = time(); $sql = "SELECT dr.*, d.* FROM {data_records} dr JOIN {data} d ON d.id = dr.dataid WHERE dr.id = ?"; $entry = $DB->get_record_sql($sql, array( $id ), IGNORE_MISSING); if (!$entry) { return \core_search\manager::ACCESS_DELETED; } if (($entry->timeviewfrom && $now < $entry->timeviewfrom) || ($entry->timeviewto && $now > $entry->timeviewto)) { return \core_search\manager::ACCESS_DENIED; } $cm = $this->get_cm('data', $entry->dataid, $entry->course); $context = \context_module::instance($cm->id); $canmanageentries = has_capability('mod/data:manageentries', $context); if (!has_capability('mod/data:viewentry', $context)) { return \core_search\manager::ACCESS_DENIED; } $numberofentriesindb = $DB->count_records('data_records', array('dataid' => $entry->dataid)); $requiredentriestoview = $entry->requiredentriestoview; if ($requiredentriestoview && ($requiredentriestoview > $numberofentriesindb) && ($USER->id != $entry->userid) && !$canmanageentries) { return \core_search\manager::ACCESS_DENIED; } if ($entry->approval && !$entry->approved && ($entry->userid != $USER->id) && !$canmanageentries) { return \core_search\manager::ACCESS_DENIED; } $currentgroup = groups_get_activity_group($cm, true); $groupmode = groups_get_activity_groupmode($cm); if (($groupmode == 1) && ($entry->groupid != $currentgroup) && !$canmanageentries) { return \core_search\manager::ACCESS_DENIED; } return \core_search\manager::ACCESS_GRANTED; } /** * Link to database entry. * * @param \core_search\document $doc * @return \moodle_url */ public function get_doc_url(\core_search\document $doc) { $entry = $this->get_entry($doc->get('itemid')); return new \moodle_url('/mod/data/view.php', array( 'd' => $entry->dataid, 'rid' => $entry->id )); } /** * Link to the database activity. * * @param \core_search\document $doc * @return \moodle_url */ public function get_context_url(\core_search\document $doc) { $entry = $this->get_entry($doc->get('itemid')); return new \moodle_url('/mod/data/view.php', array('d' => $entry->dataid)); } /** * Returns true if this area uses file indexing. * * @return bool */ public function uses_file_indexing() { return true; } /** * Add the database entries attachments. * * @param \core_search\document $doc * @return void */ public function attach_files($doc) { global $DB; $entryid = $doc->get('itemid'); try { $entry = $this->get_entry($entryid); } catch (\dml_missing_record_exception $e) { debugging('Could not get record to attach files to '.$doc->get('id'), DEBUG_DEVELOPER); return; } $cm = $this->get_cm('data', $entry->dataid, $doc->get('courseid')); $context = \context_module::instance($cm->id); // Get all content fields which have files in them. $contentssql = " SELECT con.* FROM {data_content} con JOIN {files} fil ON fil.component = :component AND fil.filearea = :filearea AND fil.itemid = con.id WHERE con.recordid = :recordid "; $contents = $DB->get_recordset_sql($contentssql, [ 'recordid' => $entryid, 'component' => 'mod_data', 'filearea' => 'content', ]); foreach ($contents as $content) { // Get the files and attach them. $fs = get_file_storage(); $files = $fs->get_area_files($context->id, 'mod_data', 'content', $content->id, 'filename', false); foreach ($files as $file) { $doc->add_stored_file($file); } } $contents->close(); } /** * Get database entry data * * @throws \dml_exception * @param int $entryid * @return stdClass */ protected function get_entry($entryid) { global $DB; if (empty($this->entriesdata[$entryid])) { $this->entriesdata[$entryid] = $DB->get_record('data_records', array( 'id' => $entryid ), '*', MUST_EXIST); } return $this->entriesdata[$entryid]; } /** * get_fields_for_entries * * @param StdClass $entry * @return array */ protected function get_fields_for_entries($entry) { global $DB; $indexfields = array(); $validfieldtypes = array('text', 'textarea', 'menu', 'radiobutton', 'checkbox', 'multimenu', 'url'); $sql = "SELECT dc.*, df.name AS fldname, df.type AS fieldtype, df.required FROM {data_content} dc, {data_fields} df WHERE dc.fieldid = df.id AND dc.recordid = :recordid"; $contents = $DB->get_records_sql($sql, ['recordid' => $entry->id]); $filteredcontents = []; $data = $DB->get_record('data', ['id' => $entry->dataid]); $manager = manager::create_from_instance($data); $template = $manager->get_template('addtemplate'); $template = $template->get_template_content(); // Filtering out the data_content records having invalid fieldtypes. foreach ($contents as $content) { if (in_array($content->fieldtype, $validfieldtypes)) { $filteredcontents[] = $content; } } foreach ($filteredcontents as $content) { $classname = $this->get_field_class_name($content->fieldtype); if (!$classname) { $content->addtemplateposition = -1; continue; } $content->priority = $classname::get_priority(); $content->addtemplateposition = strpos($template ?? '', '[['.$content->fldname.']]'); } $orderqueue = new \SPLPriorityQueue(); // Filtering out contents which belong to fields that aren't present in the addtemplate of the database activity instance. foreach ($filteredcontents as $content) { if ($content->addtemplateposition >= 0) { $orderqueue->insert($content, $content->addtemplateposition); } } $filteredcontents = array(); while ($orderqueue->valid()) { $filteredcontents[] = $orderqueue->extract(); } // SPLPriorityQueue sorts according to descending order of the priority (here, addtemplateposition). $filteredcontents = array_reverse($filteredcontents); // Using a CUSTOM SPLPriorityQueure instance to sort out the filtered contents according to these rules : // 1. Priorities in $fieldtypepriorities // 2. Compulsory fieldtypes are to be given the top priority. $contentqueue = new sortedcontentqueue($filteredcontents); foreach ($filteredcontents as $key => $content) { $contentqueue->insert($content, $key); } while ($contentqueue->valid()) { $content = $contentqueue->extract(); $classname = $this->get_field_class_name($content->fieldtype); $indexfields[] = $classname::get_content_value($content); } // Limited to 4 fields as a document only has 4 content fields. if (count($indexfields) > 4) { $indexfields[3] = implode(' ', array_slice($indexfields, 3)); } return $indexfields; } /** * Returns the class name for the given field type and includes it. * * @param string $fieldtype * @return string|null It will return the class name or null if the field type is not available. */< protected function get_field_class_name($fieldtype) {> protected function get_field_class_name(string $fieldtype) : ?string {global $CFG; $fieldtype = trim($fieldtype); $fieldpath = $CFG->dirroot . '/mod/data/field/' . $fieldtype . '/field.class.php'; if (!file_exists($fieldpath)) { return null; } require_once($fieldpath); return 'data_field_' . $fieldtype; } /** * Confirms that data entries support group restrictions. * * @return bool True */ public function supports_group_restriction() { return true; } }