Files
moodle/search/classes/output/renderer.php
T
Eric Merrill 053118a184 MDL-53758 search: Better results with low hit rates, improve performance
Ensures that Solr will return available results, even if there are many
misses when using check_access(), by asking Solr for more results if the
counter says there should be more.

Improves performance by ending processing as soon as the requested page
of results is processed. Remaining number of pages is an "estimate"
based on the total result count from Solr and how many items we have
rejected up to this point.
2016-04-17 21:59:25 -04:00

107 lines
3.6 KiB
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/>.
/**
* Search renderer.
*
* @package core_search
* @copyright 2015 David Monllao {@link http://www.davidmonllao.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
namespace core_search\output;
defined('MOODLE_INTERNAL') || die();
/**
* Search renderer.
*
* @package core_search
* @copyright 2015 David Monllao {@link http://www.davidmonllao.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class renderer extends \plugin_renderer_base {
/**
* @var int Max number chars to display of a string value
*/
const SEARCH_RESULT_STRING_SIZE = 100;
/**
* @var int Max number chars to display of a text value
*/
const SEARCH_RESULT_TEXT_SIZE = 500;
/**
* Renders search results.
*
* @param \core_search\document[] $results
* @param int $page Zero based page number.
* @param int $totalcount Total number of results available.
* @param \moodle_url $url
* @return string HTML
*/
public function render_results($results, $page, $totalcount, $url) {
// Paging bar.
$perpage = \core_search\manager::DISPLAY_RESULTS_PER_PAGE;
$content = $this->output->paging_bar($totalcount, $page, $perpage, $url);
// Results.
$resultshtml = array();
foreach ($results as $hit) {
$resultshtml[] = $this->render_result($hit);
}
$content .= \html_writer::tag('div', implode('<hr/>', $resultshtml), array('class' => 'search-results'));
// Paging bar.
$content .= $this->output->paging_bar($totalcount, $page, $perpage, $url);
return $content;
}
/**
* Displaying search results.
*
* @param \core_search\document Containing a single search response to be displayed.a
* @return string HTML
*/
public function render_result(\core_search\document $doc) {
$docdata = $doc->export_for_template($this);
// Limit text fields size.
$docdata['title'] = shorten_text($docdata['title'], static::SEARCH_RESULT_STRING_SIZE, true);
$docdata['content'] = $docdata['content'] ? shorten_text($docdata['content'], static::SEARCH_RESULT_TEXT_SIZE, true) : '';
$docdata['description1'] = $docdata['description1'] ? shorten_text($docdata['description1'], static::SEARCH_RESULT_TEXT_SIZE, true) : '';
$docdata['description2'] = $docdata['description2'] ? shorten_text($docdata['description2'], static::SEARCH_RESULT_TEXT_SIZE, true) : '';
return $this->output->render_from_template('core_search/result', $docdata);
}
/**
* Returns a box with a search disabled lang string.
*
* @return string HTML
*/
public function render_search_disabled() {
$content = $this->output->box_start();
$content .= $this->output->notification(get_string('globalsearchdisabled', 'search'), 'notifymessage');
$content .= $this->output->box_end();
return $content;
}
}