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✏️ Editing: insights_list.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/>.

/**
 * Insights list page.
 *
 * @package    report_insights
 * @copyright  2017 David Monllao {@link http://www.davidmonllao.com}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace report_insights\output;

defined('MOODLE_INTERNAL') || die();

/**
 * Shows report_insights insights list.
 *
 * @package    report_insights
 * @copyright  2017 David Monllao {@link http://www.davidmonllao.com}
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class insights_list implements \renderable, \templatable {

/**
     * @var \core_analytics\model
     */
    protected $model;

/**
     * @var \context
     */
    protected $context;

/**
     * @var \core_analytics\model[]
     */
    protected $othermodels;

/**
     * @var int
     */
    protected $page;

/**
     * @var int
     */
    protected $perpage;

/**
     * Constructor
     *
     * @param \core_analytics\model $model
     * @param \context $context
     * @param \core_analytics\model[] $othermodels
     * @param int $page
     * @param int $perpage The max number of results to fetch
     * @return void
     */
    public function __construct(\core_analytics\model $model, \context $context, $othermodels, $page = 0, $perpage = 100) {
        $this->model = $model;
        $this->context = $context;
        $this->othermodels = $othermodels;
        $this->page = $page;
        $this->perpage = $perpage;
    }

/**
     * Exports the data.
     *
     * @param \renderer_base $output
     * @return \stdClass
     */
    public function export_for_template(\renderer_base $output) {
        global $PAGE;

$target = $this->model->get_target();

$data = new \stdClass();
        $data->modelid = $this->model->get_id();
        $data->contextid = $this->context->id;

$targetname = $target->get_name();
        $data->insightname = format_string($targetname);

$targetinfostr = $targetname->get_identifier() . 'info';
        if (get_string_manager()->string_exists($targetinfostr, $targetname->get_component())) {
            $data->insightdescription = get_string($targetinfostr, $targetname->get_component());
        }

$data->showpredictionheading = true;
        if (!$target->is_linear()) {
            $nclasses = count($target::get_classes());
            $nignoredclasses = count($target->ignored_predicted_classes());
            if ($nclasses - $nignoredclasses <= 1) {
                // Hide the prediction heading if there is only 1 class displayed. Otherwise it is redundant with the insight name.
                $data->showpredictionheading = false;
            }
        }

$total = 0;

if ($this->model->uses_insights()) {

$target->add_bulk_actions_js();

$predictionsdata = $this->model->get_predictions($this->context, true, $this->page, $this->perpage);

if (!$this->model->is_static()) {
                $notification = new \core\output\notification(get_string('justpredictions', 'report_insights'));
                $data->nostaticmodelnotification = $notification->export_for_template($output);
            }

$data->predictions = array();
            $predictionvalues = array();
            $insights = array();
            if ($predictionsdata) {
                list($total, $predictions) = $predictionsdata;

if ($predictions) {
                    // No bulk actions if no predictions.
                    $data->bulkactions = actions_exporter::add_bulk_actions($target, $output, $predictions, $this->context);
                }

$data->multiplepredictions = count($predictions) > 1 ? true : false;

foreach ($predictions as $prediction) {
                    $predictedvalue = $prediction->get_prediction_data()->prediction;

// Only need to fill this data once.
                    if (!isset($predictionvalues[$predictedvalue])) {
                        $preddata = array();
                        $preddata['predictiondisplayvalue'] = $target->get_display_value($predictedvalue);
                        list($preddata['style'], $preddata['outcomeicon']) =
                            insight::get_calculation_display($target, floatval($predictedvalue), $output);
                        $predictionvalues[$predictedvalue] = $preddata;
                    }

$insightrenderable = new \report_insights\output\insight($prediction, $this->model, true, $this->context);
                    $insights[$predictedvalue][] = $insightrenderable->export_for_template($output);
                }

// Order predicted values.
                if ($target->is_linear()) {
                    // During regression what we will be interested on most of the time is in low values so let's show them first.
                    ksort($predictionvalues);
                } else {
                    // During classification targets flag "not that important" samples as 0 so let's show them at the end.
                    krsort($predictionvalues);
                }

// Ok, now we have all the data we want, put it into a format that mustache can handle.
                foreach ($predictionvalues as $key => $prediction) {
                    if (isset($insights[$key])) {

$toggleall = new \core\output\checkbox_toggleall('insight-bulk-action-' . $key, true, [
                            'id' => 'id-toggle-all-' . $key,
                            'name' => 'toggle-all-' . $key,
                            'label' => get_string('selectall'),
                            'labelclasses' => 'sr-only',
                            'checked' => false
                        ]);
                        $prediction['checkboxtoggleall'] = $output->render($toggleall);

$prediction['predictedvalue'] = $key;
                        $prediction['insights'] = $insights[$key];
                    }

$data->predictions[] = $prediction;
                }
            }

if (empty($insights) && $this->page == 0) {
                if ($this->model->any_prediction_obtained()) {
                    $data->noinsights = get_string('noinsights', 'analytics');
                } else {
                    $data->noinsights = get_string('nopredictionsyet', 'analytics');
                }
            }
        } else {
            $data->noinsights = get_string('noinsights', 'analytics');
        }

if (!empty($data->noinsights)) {
            $notification = new \core\output\notification($data->noinsights);
            $data->noinsights = $notification->export_for_template($output);
        }

$url = $PAGE->url;

if ($this->othermodels) {

$options = array();
            foreach ($this->othermodels as $model) {
                $options[$model->get_id()] = $model->get_target()->get_name();
            }

// New moodle_url instance returned by magic_get_url.
            $url->remove_params('modelid');
            $modelselector = new \single_select($url, 'modelid', $options, '',
                array('' => get_string('selectotherinsights', 'report_insights')));
            $data->modelselector = $modelselector->export_for_template($output);
        }

// Add the 'perpage' parameter to the url which is later used to generate the pagination links.
        $url->param('perpage', $this->perpage);
        $data->pagingbar = $output->render(new \paging_bar($total, $this->page, $this->perpage, $url));

return $data;
    }
}

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