Merge pull request #862 from jloguercio/lessonFixes

Fix some warnings and notice in lessons

main/newscorm/learnpath.class.php

@@ -6391,11 +6391,15 @@ class learnpath
         $return .= '<option class="top" value="0">' . get_lang('FirstPosition') . '</option>';
         for ($i = 0; $i < count($arrLP); $i++) {
             if ($arrLP[$i]['parent_item_id'] == $parent && $arrLP[$i]['id'] != $id) {
-                if ($extra_info['previous_item_id'] == $arrLP[$i]['id'])
+                if (is_array($extra_info)) {
+                    if ($extra_info['previous_item_id'] == $arrLP[$i]['id']) {
+                        $selected = 'selected="selected" ';
+                    }
+                } elseif ($action == 'add') {
                     $selected = 'selected="selected" ';
-                elseif ($action == 'add') $selected = 'selected="selected" ';
-                else
+                } else {
                     $selected = '';
+                }
                 $return .= '<option ' . $selected . 'value="' . $arrLP[$i]['id'] . '">' . get_lang('After') . ' "' . $arrLP[$i]['title'] . '"</option>';
             }
         }
@@ -6416,9 +6420,13 @@ class learnpath
             $arrHide = array ();
             for ($i = 0; $i < count($arrLP); $i++) {
                 if ($arrLP[$i]['id'] != $id && $arrLP[$i]['item_type'] != 'dokeos_chapter') {
-                    if ($extra_info['previous_item_id'] == $arrLP[$i]['id'])
-                        $s_selected_position = $arrLP[$i]['id'];
-                    elseif ($action == 'add') $s_selected_position = 0;
+                    if (is_array($extra_info)) {
+                        if ($extra_info['previous_item_id'] == $arrLP[$i]['id']) {
+                            $s_selected_position = $arrLP[$i]['id'];
+                        }
+                    } elseif ($action == 'add') {
+                        $s_selected_position = 0;
+                    }
                     $arrHide[$arrLP[$i]['id']]['value'] = $arrLP[$i]['title'];
                 }
             }