Add PDF export to exercise result only for teachers see BT#13394

main/exercise/exercise_show.php

@@ -57,11 +57,6 @@ $TBL_QUESTIONS = Database::get_course_table(TABLE_QUIZ_QUESTION);
 $TBL_TRACK_EXERCISES = Database::get_main_table(TABLE_STATISTIC_TRACK_E_EXERCISES);
 $TBL_TRACK_ATTEMPT = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ATTEMPT);
 
-// General parameters passed via POST/GET
-if ($debug) {
-    error_log('Entered exercise_result.php: '.print_r($_POST, 1));
-}
-
 if (empty($formSent)) {
     $formSent = isset($_REQUEST['formSent']) ? $_REQUEST['formSent'] : null;
 }
@@ -171,15 +166,24 @@ if ($allowRecordAudio && $allowTeacherCommentAudio) {
 
 $scoreJsCode = ExerciseLib::getJsCode();
 
-if ($origin != 'learnpath') {
-    Display::display_header('');
-} else {
-    $htmlHeadXtra[] = "
+if ($action != 'export') {
+    if ($origin != 'learnpath') {
+        Display::display_header('');
+    } else {
+        $htmlHeadXtra[] = "
     <style>
     body { background: none;}
     </style>
     ";
-    Display::display_reduced_header();
+        Display::display_reduced_header();
+    }
+
+    echo Display::toolbarAction('toolbar', [
+        Display::url(
+            Display::return_icon('pdf.png', get_lang('Export')),
+            api_get_self().'?'.api_get_cidreq().'&id='.$id.'&action=export&'
+        )
+    ]);
 }
 ?>
     <script>
@@ -285,9 +289,13 @@ if ($is_allowedToEdit && in_array($action, ['qualify', 'edit'])) {
     $show_results = true;
 }
 
+if ($action == 'export') {
+    ob_start();
+}
+
+$user_info = api_get_user_info($student_id);
 if ($show_results || $show_only_total_score || $showTotalScoreAndUserChoicesInLastAttempt) {
-    $user_info = api_get_user_info($student_id);
-    //Shows exercise header
+    // Shows exercise header
     echo $objExercise->show_exercise_result_header(
         $user_info,
         api_convert_and_format_date($exercise_date),
@@ -702,7 +710,7 @@ foreach ($questionList as $questionId) {
         }
 
         $marksname = '';
-        if ($isFeedbackAllowed) {
+        if ($isFeedbackAllowed && $action != 'export') {
             $name = "fckdiv".$questionId;
             $marksname = "marksName".$questionId;
             if (in_array($answerType, array(FREE_ANSWER, ORAL_EXPRESSION, ANNOTATION))) {
@@ -763,6 +771,7 @@ foreach ($questionList as $questionId) {
             $feedback_form->setDefaults($default);
             $feedback_form->display();
 
+
             echo '</div>';
 
             if ($allowRecordAudio && $allowTeacherCommentAudio) {
@@ -783,7 +792,7 @@ foreach ($questionList as $questionId) {
             }
         }
 
-        if ($is_allowedToEdit && $isFeedbackAllowed) {
+        if ($is_allowedToEdit && $isFeedbackAllowed && $action != 'export') {
             if (in_array($answerType, array(FREE_ANSWER, ORAL_EXPRESSION, ANNOTATION))) {
                 $marksname = "marksName".$questionId;
                 $arrmarks[] = $questionId;
@@ -926,7 +935,7 @@ foreach ($questionList as $questionId) {
     $exercise_content .= Display::panel($question_content);
 } // end of large foreach on questions
 
-$total_score_text = null;
+$total_score_text = '';
 
 //Total score
 if ($origin != 'learnpath' || ($origin == 'learnpath' && isset($_GET['fb_type']))) {
@@ -963,6 +972,27 @@ echo $total_score_text;
 echo $exercise_content;
 echo $total_score_text;
 
+if ($action == 'export') {
+    $content = ob_get_clean();
+    $params = array(
+        'filename' => api_replace_dangerous_char(
+            $objExercise->name.' '.
+            $user_info['complete_name'].' '.
+            api_get_local_time()
+        ),
+        'course_code' => api_get_course_id(),
+        'session_info' => api_get_session_info(api_get_session_id()),
+        'course_info' => '',
+        'pdf_date' => '',
+        'show_real_course_teachers' => false,
+        'show_teacher_as_myself' => false,
+        'orientation' => 'P'
+    );
+    $pdf = new PDF('A4', $params['orientation'], $params);
+    $pdf->html_to_pdf_with_template($content, false, false, true);
+    exit;
+}
+
 if ($isFeedbackAllowed) {
     if (is_array($arrid) && is_array($arrmarks)) {
         $strids = implode(",", $arrid);

main/inc/lib/pdf.lib.php

@@ -45,7 +45,7 @@ class PDF
         $params['bottom'] = isset($params['bottom']) ? $params['bottom'] : 30;
 
         $this->params['filename'] = isset($params['filename']) ? $params['filename'] : api_get_local_time();
-        $this->params['pdf_title'] = isset($params['pdf_title']) ? $params['pdf_title'] : get_lang('Untitled');
+        $this->params['pdf_title'] = isset($params['pdf_title']) ? $params['pdf_title'] : '';
         $this->params['course_info'] = isset($params['course_info']) ? $params['course_info'] : api_get_course_info();
         $this->params['session_info'] = isset($params['session_info']) ? $params['session_info'] : api_get_session_info(api_get_session_id());
         $this->params['course_code'] = isset($params['course_code']) ? $params['course_code'] : api_get_course_id();
@@ -88,13 +88,15 @@ class PDF
      * @param $content
      * @param bool|false $saveToFile
      * @param bool|false $returnHtml
+     * @param bool $addDefaultCss
      *
      * @return string
      */
     public function html_to_pdf_with_template(
         $content,
         $saveToFile = false,
-        $returnHtml = false
+        $returnHtml = false,
+        $addDefaultCss = false
     ) {
         if (empty($this->template)) {
             $tpl = new Template('', false, false, false);
@@ -151,7 +153,6 @@ class PDF
             $css_file = api_get_path(SYS_CSS_PATH).'print.css';
         }
         $css = file_get_contents($css_file);
-
         $html = self::content_to_pdf(
             $html,
             $css,
@@ -160,7 +161,8 @@ class PDF
             'D',
             $saveToFile,
             null,
-            $returnHtml
+            $returnHtml,
+            $addDefaultCss
         );
 
         if ($returnHtml) {
@@ -399,6 +401,11 @@ class PDF
      * @param   string $course_code course code
      * (if you are using html that are located in the document tool you must provide this)
      * @param string $outputMode the MPDF output mode can be:
+     * @param bool $saveInFile
+     * @param string $fileToSave
+     * @param bool $returnHtml
+     * @param bool $addDefaultCss
+     *
      * 'I' (print on standard output),
      * 'D' (download file) (this is the default value),
      * 'F' (save to local file) or
@@ -413,7 +420,8 @@ class PDF
         $outputMode = 'D',
         $saveInFile = false,
         $fileToSave = null,
-        $returnHtml = false
+        $returnHtml = false,
+        $addDefaultCss = false
     ) {
         $urlAppend = api_get_configuration_value('url_append');
 
@@ -450,7 +458,7 @@ class PDF
             $document_path = api_get_path(SYS_COURSE_PATH).$course_data['path'].'/document/';
 
             $doc = new DOMDocument();
-            $result = @$doc->loadHTML($document_html);
+            @$doc->loadHTML($document_html);
 
             //Fixing only images @todo do the same thing with other elements
             $elements = $doc->getElementsByTagName('img');
@@ -495,6 +503,19 @@ class PDF
         if (!empty($css)) {
             $this->pdf->WriteHTML($css, 1);
         }
+
+        if ($addDefaultCss) {
+            $basicStyles = [
+                api_get_path(WEB_PUBLIC_PATH).'assets/bootstrap/dist/css/bootstrap.min.css',
+                api_get_path(WEB_CSS_PATH).'base.css',
+                api_get_path(WEB_CSS_PATH).api_get_visual_theme().'/default.css'
+            ];
+            foreach ($basicStyles as $style) {
+                $cssContent = file_get_contents($style);
+                $this->pdf->WriteHTML("<style>$cssContent</style>", 1);
+            }
+        }
+
         $this->pdf->WriteHTML($document_html);
 
         if (empty($pdf_name)) {

main/template/default/export/table_pdf.tpl

@@ -1,4 +1,6 @@
+{% if pdf_title %}
 <h2 align="center"> {{ pdf_title }} </h2>
+{% endif %}
 
 {% if pdf_description %}
     {{ pdf_description }}