Actualización

plugin/questionoptionsevaluation/QuestionOptionsEvaluationPlugin.php

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+<?php
+/* For licensing terms, see /license.txt */
+
+use Chamilo\CoreBundle\Entity\TrackEAttempt;
+
+/**
+ * Class QuestionOptionsEvaluationPlugin.
+ */
+class QuestionOptionsEvaluationPlugin extends Plugin
+{
+    public const SETTING_ENABLE = 'enable';
+    public const SETTING_MAX_SCORE = 'exercise_max_score';
+    public const EXTRAFIELD_FORMULA = 'quiz_evaluation_formula';
+
+    /**
+     * QuestionValuationPlugin constructor.
+     */
+    protected function __construct()
+    {
+        $version = '1.0';
+        $author = 'Angel Fernando Quiroz Campos';
+
+        parent::__construct(
+            $version,
+            $author,
+            [
+                self::SETTING_ENABLE => 'boolean',
+                self::SETTING_MAX_SCORE => 'text',
+            ]
+        );
+    }
+
+    /**
+     * @return QuestionOptionsEvaluationPlugin|null
+     */
+    public static function create()
+    {
+        static $result = null;
+
+        return $result ? $result : $result = new self();
+    }
+
+    /**
+     * @param int $exerciseId
+     * @param int $iconSize
+     *
+     * @return string
+     */
+    public static function filterModify($exerciseId, $iconSize = ICON_SIZE_SMALL)
+    {
+        $directory = basename(__DIR__);
+        $title = get_plugin_lang('plugin_title', self::class);
+        $enabled = api_get_plugin_setting('questionoptionsevaluation', 'enable');
+
+        if ('true' !== $enabled) {
+            return '';
+        }
+
+        return Display::url(
+            Display::return_icon('options_evaluation.png', $title, [], $iconSize),
+            api_get_path(WEB_PATH)."plugin/$directory/evaluation.php?exercise=$exerciseId",
+            [
+                'class' => 'ajax',
+                'data-size' => 'md',
+                'data-title' => get_plugin_lang('plugin_title', self::class),
+            ]
+        );
+    }
+
+    public function install()
+    {
+        $this->createExtraField();
+    }
+
+    public function uninstall()
+    {
+        $this->removeExtraField();
+    }
+
+    /**
+     * @return Plugin
+     */
+    public function performActionsAfterConfigure()
+    {
+        return $this;
+    }
+
+    /**
+     * @param int $formula
+     */
+    public function saveFormulaForExercise($formula, Exercise $exercise)
+    {
+        $this->recalculateQuestionScore($formula, $exercise);
+
+        $extraFieldValue = new ExtraFieldValue('quiz');
+        $extraFieldValue->save(
+            [
+                'item_id' => $exercise->iid,
+                'variable' => self::EXTRAFIELD_FORMULA,
+                'value' => $formula,
+            ]
+        );
+    }
+
+    /**
+     * @param int $exerciseId
+     *
+     * @return int
+     */
+    public function getFormulaForExercise($exerciseId)
+    {
+        $extraFieldValue = new ExtraFieldValue('quiz');
+        $value = $extraFieldValue->get_values_by_handler_and_field_variable(
+            $exerciseId,
+            self::EXTRAFIELD_FORMULA
+        );
+
+        if (empty($value)) {
+            return 0;
+        }
+
+        return (int) $value['value'];
+    }
+
+    /**
+     * @return int
+     */
+    public function getMaxScore()
+    {
+        $max = $this->get(self::SETTING_MAX_SCORE);
+
+        if (!empty($max)) {
+            return (int) $max;
+        }
+
+        return 10;
+    }
+
+    /**
+     * @param int $trackId
+     * @param int $formula
+     *
+     * @throws \Doctrine\ORM\ORMException
+     * @throws \Doctrine\ORM\OptimisticLockException
+     * @throws \Doctrine\ORM\TransactionRequiredException
+     *
+     * @return float|int
+     */
+    public function getResultWithFormula($trackId, $formula)
+    {
+        $em = Database::getManager();
+
+        $eTrack = $em->find('ChamiloCoreBundle:TrackEExercises', $trackId);
+
+        $qTracks = $em
+            ->createQuery(
+                'SELECT a FROM ChamiloCoreBundle:TrackEAttempt a
+                WHERE a.exeId = :id AND a.userId = :user AND a.cId = :course AND a.sessionId = :session'
+            )
+            ->setParameters(
+                [
+                    'id' => $eTrack->getExeId(),
+                    'course' => $eTrack->getCId(),
+                    'session' => $eTrack->getSessionId(),
+                    'user' => $eTrack->getExeUserId(),
+                ]
+            )
+            ->getResult();
+
+        $counts = ['correct' => 0, 'incorrect' => 0];
+
+        /** @var TrackEAttempt $qTrack */
+        foreach ($qTracks as $qTrack) {
+            if ($qTrack->getMarks() > 0) {
+                $counts['correct']++;
+            } elseif ($qTrack->getMarks() < 0) {
+                $counts['incorrect']++;
+            }
+        }
+
+        switch ($formula) {
+            case 1:
+                $result = $counts['correct'] - $counts['incorrect'];
+                break;
+            case 2:
+                $result = $counts['correct'] - $counts['incorrect'] / 2;
+                break;
+            case 3:
+                $result = $counts['correct'] - $counts['incorrect'] / 3;
+                break;
+        }
+
+        $score = ($result / count($qTracks)) * $this->getMaxScore();
+
+        return $score >= 0 ? $score : 0;
+    }
+
+    /**
+     * @param int $formula
+     */
+    private function recalculateQuestionScore($formula, Exercise $exercise)
+    {
+        $tblQuestion = Database::get_course_table(TABLE_QUIZ_QUESTION);
+        $tblAnswer = Database::get_course_table(TABLE_QUIZ_ANSWER);
+
+        foreach ($exercise->questionList as $questionId) {
+            $question = Question::read($questionId, $exercise->course, false);
+            if (!in_array($question->selectType(), [UNIQUE_ANSWER, MULTIPLE_ANSWER])) {
+                continue;
+            }
+
+            $questionAnswers = new Answer($questionId, $exercise->course_id, $exercise);
+            $counts = array_count_values($questionAnswers->correct);
+
+            $questionPonderation = 0;
+
+            foreach ($questionAnswers->correct as $i => $isCorrect) {
+                if (!isset($questionAnswers->iid[$i])) {
+                    continue;
+                }
+
+                $iid = $questionAnswers->iid[$i];
+
+                if ($question->selectType() == MULTIPLE_ANSWER || 0 === $formula) {
+                    $ponderation = 1 == $isCorrect ? 1 / $counts[1] : -1 / $counts[0];
+                } else {
+                    $ponderation = 1 == $isCorrect ? 1 : -1 / $formula;
+                }
+
+                if ($ponderation > 0) {
+                    $questionPonderation += $ponderation;
+                }
+
+                Database::query("UPDATE $tblAnswer SET ponderation = $ponderation WHERE iid = $iid");
+            }
+
+            Database::query("UPDATE $tblQuestion SET ponderation = $questionPonderation WHERE iid = {$question->iid}");
+        }
+    }
+
+    /**
+     * Creates an extrafield.
+     */
+    private function createExtraField()
+    {
+        $extraField = new ExtraField('quiz');
+
+        if (false === $extraField->get_handler_field_info_by_field_variable(self::EXTRAFIELD_FORMULA)) {
+            $extraField
+                ->save(
+                    [
+                        'variable' => self::EXTRAFIELD_FORMULA,
+                        'field_type' => ExtraField::FIELD_TYPE_TEXT,
+                        'display_text' => $this->get_lang('EvaluationFormula'),
+                        'visible_to_self' => false,
+                        'changeable' => false,
+                    ]
+                );
+        }
+    }
+
+    /**
+     * Removes the extrafield .
+     */
+    private function removeExtraField()
+    {
+        $extraField = new ExtraField('quiz');
+        $value = $extraField->get_handler_field_info_by_field_variable(self::EXTRAFIELD_FORMULA);
+
+        if (false !== $value) {
+            $extraField->delete($value['id']);
+        }
+    }
+}

plugin/questionoptionsevaluation/README.md

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+# Questions Options Evaluation
+
+Allow recalulate the options score in questions:
+
+* Successes - Failures
+* Successes - Failures / 2
+* Successes - Failures / 3
+* Recalculate question scores
+
+**Setup instructions**
+
+- Install plugin
+- Set enabled in configuration
+- Edit `configuration.php` file
+  ```php
+  $_configuration['exercise_additional_teacher_modify_actions'] = [
+      // ...
+      'questionoptionsevaluation' => ['QuestionOptionsEvaluationPlugin', 'filterModify']
+  ];
+  ```

plugin/questionoptionsevaluation/evaluation.php

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+<?php
+/* For licensing terms, see /license.txt */
+
+require_once __DIR__.'/../../main/inc/global.inc.php';
+
+api_protect_teacher_script();
+api_protect_course_script();
+
+$exerciseId = isset($_REQUEST['exercise']) ? (int) $_REQUEST['exercise'] : 0;
+
+if (empty($exerciseId)) {
+    echo Display::return_message(get_lang('NotAllowed'), 'error');
+
+    exit;
+}
+
+$exercise = new Exercise();
+
+if (!$exercise->read($exerciseId, false)) {
+    echo Display::return_message(get_lang('ExerciseNotFound'), 'error');
+
+    exit;
+}
+
+$plugin = QuestionOptionsEvaluationPlugin::create();
+
+if ($plugin->get('enable') !== 'true') {
+    echo Display::return_message(get_lang('NotAllowed'), 'error');
+
+    exit;
+}
+
+$formEvaluation = new FormValidator('evaluation');
+$formEvaluation
+    ->addRadio(
+        'formula',
+        $plugin->get_lang('EvaluationFormula'),
+        [
+            -1 => $plugin->get_lang('NoFormula'),
+            0 => $plugin->get_lang('RecalculateQuestionScores'),
+            1 => $plugin->get_lang('Formula1'),
+            2 => $plugin->get_lang('Formula2'),
+            3 => $plugin->get_lang('Formula3'),
+        ]
+    )
+    ->setColumnsSize([4, 7, 1]);
+$formEvaluation->addButtonSave(get_lang('Save'))->setColumnsSize([4, 7, 1]);
+$formEvaluation->addHidden('exercise', $exerciseId);
+
+if ($formEvaluation->validate()) {
+    $exercise->read($exerciseId, true);
+    $values = $formEvaluation->exportValues();
+    $formula = isset($values['formula']) ? (int) $values['formula'] : 0;
+    $plugin->saveFormulaForExercise($formula, $exercise);
+    Display::addFlash(
+        Display::return_message(
+            sprintf($plugin->get_lang('FormulaSavedForExerciseX'), $exercise->selectTitle(true)),
+            'success'
+        )
+    );
+
+    header(
+        'Location: '.api_get_path(WEB_CODE_PATH).'exercise/exercise.php?'.api_get_cidreq()."&exerciseId=$exerciseId"
+    );
+    exit;
+}
+
+$formEvaluation->setDefaults(['formula' => $plugin->getFormulaForExercise($exercise->iid)]);
+
+echo Display::return_message(
+    $plugin->get_lang('QuizQuestionsScoreRulesTitleConfirm'),
+    'warning'
+);
+$formEvaluation->display();

plugin/questionoptionsevaluation/install.php

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+<?php
+/* For licensing terms, see /license.txt */
+
+QuestionOptionsEvaluationPlugin::create()->install();

plugin/questionoptionsevaluation/lang/english.php

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+<?php
+/* For licensing terms, see /license.txt */
+
+$strings['plugin_title'] = 'Question options evaluation';
+$strings['plugin_comment'] = "Allow re-calculation of the options' scores in questions";
+
+$strings['enable'] = 'Enable';
+$strings['exercise_max_score'] = 'Max score in exercises';
+$strings['exercise_max_score_help'] = 'Default is 10.';
+
+$strings['QuizQuestionsScoreRulesTitleConfirm'] = 'Changing the evaluation formula generates changes for each question in the exercise and prevents undoing this change below. Are you sure you want to proceed?';
+$strings['EvaluationFormula'] = 'Evaluation formula';
+$strings['NoFormula'] = 'No formula';
+$strings['Formula1'] = 'Successes - Failures';
+$strings['Formula2'] = 'Successes - Failures / 2';
+$strings['Formula3'] = 'Successes - Failures / 3';
+$strings['QuestionsEvaluated'] = 'Questions evaluated';
+$strings['RecalculateQuestionScores'] = 'Recalculate question scores';
+$strings['FormulaSavedForExerciseX'] = 'Formula saved for exercise "%s".';

plugin/questionoptionsevaluation/lang/spanish.php

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+<?php
+/* For licensing terms, see /license.txt */
+
+$strings['plugin_title'] = 'Evaluación para opciones de pregunta';
+$strings['plugin_comment'] = 'Permite recalcular los puntajes de opciones en preguntas';
+
+$strings['enable'] = 'Habilitar';
+$strings['exercise_max_score'] = 'Puntuación máxima por ejercicio';
+$strings['exercise_max_score_help'] = 'Por defecto es 10.';
+
+$strings['QuizQuestionsScoreRulesTitleConfirm'] = 'Cambiar la fórmula de evaluación genera cambios para cada pregunta del ejercicio e impide deshacer este cambio a continuación. ¿Está seguro que desea proceder?';
+$strings['EvaluationFormula'] = 'Fórmula de evaluación';
+$strings['NoFormula'] = 'Sin formula';
+$strings['Formula1'] = 'Aciertos - Fallos';
+$strings['Formula2'] = 'Aciertos - Fallos / 2';
+$strings['Formula3'] = 'Aciertos - Fallos / 3';
+$strings['QuestionsEvaluated'] = 'Preguntas evaluadas';
+$strings['RecalculateQuestionScores'] = 'Recalcular puntuaciones de preguntas';
+$strings['FormulaSavedForExerciseX'] = 'Formula guardada para el ejercicio "%s".';

plugin/questionoptionsevaluation/plugin.php

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+<?php
+/* For licensing terms, see /license.txt */
+
+$plugin_info = QuestionOptionsEvaluationPlugin::create()->get_info();

plugin/questionoptionsevaluation/uninstall.php

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+<?php
+/* For licensing terms, see /license.txt */
+
+QuestionOptionsEvaluationPlugin::create()->uninstall();