continue.php

很棒的在线教学系统

            } elseif ($newpageid == LESSON_RANDOMBRANCH) {
                $newpageid = lesson_unseen_branch_jump($lesson->id, $USER->id);
            }
            // no need to record anything in lesson_attempts            
            redirect("$CFG->wwwroot/mod/lesson/view.php?id=$cm->id&pageid=$newpageid");
            break;
        
    }

    $attemptsremaining  = 0;
    $maxattemptsreached = 0;
    $nodefaultresponse  = false; // Flag for redirecting when default feedback is turned off

    if ($noanswer) {
        $newpageid = $pageid; // display same page again
        $feedback  = get_string('noanswer', 'lesson');
    } else {
        $nretakes = count_records("lesson_grades", "lessonid", $lesson->id, "userid", $USER->id); 
        if (!has_capability('mod/lesson:manage', $context)) {
            // record student's attempt
            $attempt = new stdClass;
            $attempt->lessonid = $lesson->id;
            $attempt->pageid = $pageid;
            $attempt->userid = $USER->id;
            $attempt->answerid = $answerid;
            $attempt->retry = $nretakes;
            $attempt->correct = $correctanswer;
            if(isset($userresponse)) {
                $attempt->useranswer = $userresponse;
            }
            
            $attempt->timeseen = time();
            // if allow modattempts, then update the old attempt record, otherwise, insert new answer record
            if (isset($USER->modattempts[$lesson->id])) {
                $attempt->retry = $nretakes - 1; // they are going through on review, $nretakes will be too high
            }
            if (!$newattemptid = insert_record("lesson_attempts", $attempt)) {
                error("Continue: attempt not inserted");
            }
            // "number of attempts remaining" message if $lesson->maxattempts > 1
            // displaying of message(s) is at the end of page for more ergonomic display
            if (!$correctanswer and ($newpageid == 0)) {
                // wrong answer and student is stuck on this page - check how many attempts 
                // the student has had at this page/question
                $nattempts = count_records("lesson_attempts", "pageid", $pageid, "userid", $USER->id,
                    "retry", $nretakes);
                
                // retreive the number of attempts left counter for displaying at bottom of feedback page
                if ($nattempts >= $lesson->maxattempts) {
                    if ($lesson->maxattempts > 1) { // don't bother with message if only one attempt
                        $maxattemptsreached = 1;
                    }
                    $newpageid = LESSON_NEXTPAGE;
                } else if ($lesson->maxattempts > 1) { // don't bother with message if only one attempt
                    $attemptsremaining = $lesson->maxattempts - $nattempts;
                }
            }
        }
        // TODO: merge this code with the jump code below.  Convert jumpto page into a proper page id
        if ($newpageid == 0) {
            $newpageid = $pageid;
        } elseif ($newpageid == LESSON_NEXTPAGE) {
            if ($lesson->nextpagedefault) {
                // in Flash Card mode...
                // ... first get the page ids (lessonid the 5th param is needed to make get_records play)
                $allpages = get_records("lesson_pages", "lessonid", $lesson->id, "id", "id,lessonid,qtype");
                shuffle ($allpages);
                $found = false;
                if ($lesson->nextpagedefault == LESSON_UNSEENPAGE) {
                    foreach ($allpages as $thispage) {
                        if (!count_records("lesson_attempts", "pageid", $thispage->id, "userid", 
                                    $USER->id, "retry", $nretakes)) {
                            $found = true;
                            break;
                        }
                    }
                } elseif ($lesson->nextpagedefault == LESSON_UNANSWEREDPAGE) {
                    foreach ($allpages as $thispage) {
                        if ($thispage->qtype == LESSON_ESSAY) {
                            if (!count_records_select("lesson_attempts", "pageid = $thispage->id AND
                                        userid = $USER->id AND retry = $nretakes")) {
                                $found = true;
                                break;
                            }
                        } else {                             
                            if (!count_records_select("lesson_attempts", "pageid = $thispage->id AND
                                        userid = $USER->id AND correct = 1 AND retry = $nretakes")) {
                                $found = true;
                                break;
                            }
                        }
                    }
                }
                if ($found) {
                    $newpageid = $thispage->id;
                    if ($lesson->maxpages) {
                        // check number of pages viewed (in the lesson)
                        if (count_records("lesson_attempts", "lessonid", $lesson->id, "userid", $USER->id,
                                "retry", $nretakes) >= $lesson->maxpages) {
                            $newpageid = LESSON_EOL;
                        }
                    }
                } else {
                    $newpageid = LESSON_EOL;
                }
            } elseif (!$newpageid = $page->nextpageid) {
                // no nextpage go to end of lesson
                $newpageid = LESSON_EOL;
            }
        }

        // Determine default feedback if necessary
        if (empty($response)) {
            if (!$lesson->feedback and !$noanswer and !($lesson->review and !$correctanswer and !$isessayquestion)) {
                // These conditions have been met:
                //  1. The lesson manager has not supplied feedback to the student
                //  2. Not displaying default feedback
                //  3. The user did provide an answer
                //  4. We are not reviewing with an incorrect answer (and not reviewing an essay question)
                
                $nodefaultresponse = true;  // This will cause a redirect below
            } else if ($isessayquestion) {
                $response = get_string('defaultessayresponse', 'lesson');
            } else if ($correctanswer) {
                $response = get_string('thatsthecorrectanswer', 'lesson');
            } else {
                $response = get_string('thatsthewronganswer', 'lesson');
            }
        }

        // display response (if there is one - there should be!)
        // display: lesson title, page title, question text, student's answer(s) before feedback message
        
        if ($response) {
            //optionally display question page title
            //if ($title = get_field("lesson_pages", "title", "id", $pageid)) {
            //    print_heading($title);
            //}
            if ($lesson->review and !$correctanswer and !$isessayquestion) {
                $nretakes = count_records("lesson_grades", "lessonid", $lesson->id, "userid", $USER->id); 
                $qattempts = count_records("lesson_attempts", "userid", $USER->id, "retry", $nretakes, "pageid", $pageid);
                if ($qattempts == 1) {
                    $feedback = get_string("firstwrong", "lesson");
                } else {
                    $feedback = get_string("secondpluswrong", "lesson");
                }
            } else {
                if ($correctanswer) {
                    $class = 'response correct'; //CSS over-ride this if they exist (!important)
                } else if ($isessayquestion) {
                    $class = 'response';
                } else {
                    $class = 'response incorrect'; 
                }
                $options = new stdClass;
                $options->noclean = true;
                $options->para = true;
                $feedback = print_simple_box(format_text($page->contents, FORMAT_MOODLE, $options), 'center', '', '', 5, 'generalbox', '', true);
                $feedback .= '<em>'.get_string("youranswer", "lesson").'</em> : '.format_text($studentanswer, FORMAT_MOODLE, $options).
                                 "<div class=\"$class\">".format_text($response, FORMAT_MOODLE, $options).'</div>';
            }
        }
    }

    // TODO: merge with the jump code above.  This is where some jump numbers are interpreted
    if (isset($USER->modattempts[$lesson->id])) {
        // make sure if the student is reviewing, that he/she sees the same pages/page path that he/she saw the first time
        if ($USER->modattempts[$lesson->id] == $pageid) {  // remember, this session variable holds the pageid of the last page that the user saw
            $newpageid = LESSON_EOL;
        } else {
            $nretakes--; // make sure we are looking at the right try.
            $attempts = get_records_select("lesson_attempts", "lessonid = $lesson->id AND userid = $USER->id AND retry = $nretakes", "timeseen", "id, pageid");
            $found = false;
            $temppageid = 0;
            foreach($attempts as $attempt) {
                if ($found && $temppageid != $attempt->pageid) { // now try to find the next page, make sure next few attempts do no belong to current page
                    $newpageid = $attempt->pageid;
                    break;
                }
                if ($attempt->pageid == $pageid) {
                    $found = true; // if found current page
                    $temppageid = $attempt->pageid;
                }
            }
        }
    } elseif ($newpageid != LESSON_CLUSTERJUMP && $pageid != 0 && $newpageid > 0) {  // going to check to see if the page that the user is going to view next, is a cluster page.  If so, dont display, go into the cluster.  The $newpageid > 0 is used to filter out all of the negative code jumps.
        if (!$page = get_record("lesson_pages", "id", $newpageid)) {
            error("Error: could not find page");
        }
        if ($page->qtype == LESSON_CLUSTER) {
            $newpageid = lesson_cluster_jump($lesson->id, $USER->id, $page->id);
        } elseif ($page->qtype == LESSON_ENDOFCLUSTER) {
            $jump = get_field("lesson_answers", "jumpto", "pageid", $page->id, "lessonid", $lesson->id);
            if ($jump == LESSON_NEXTPAGE) {
                if ($page->nextpageid == 0) {
                    $newpageid = LESSON_EOL;
                } else {
                    $newpageid = $page->nextpageid;
                }
            } else {
                $newpageid = $jump;
            }
        }
    } elseif ($newpageid == LESSON_UNSEENBRANCHPAGE) {
        if (has_capability('mod/lesson:manage', $context)) {
            if ($page->nextpageid == 0) {
                $newpageid = LESSON_EOL;
            } else {
                $newpageid = $page->nextpageid;
            }
        } else {
            $newpageid = lesson_unseen_question_jump($lesson->id, $USER->id, $pageid);
        }            
    } elseif ($newpageid == LESSON_PREVIOUSPAGE) {
        $newpageid = $page->prevpageid;
    } elseif ($newpageid == LESSON_RANDOMPAGE) {
        $newpageid = lesson_random_question_jump($lesson->id, $pageid);
    } elseif ($newpageid == LESSON_CLUSTERJUMP) {
        if (has_capability('mod/lesson:manage', $context)) {
            if ($page->nextpageid == 0) {  // if teacher, go to next page
                $newpageid = LESSON_EOL;
            } else {
                $newpageid = $page->nextpageid;
            }            
        } else {
            $newpageid = lesson_cluster_jump($lesson->id, $USER->id, $pageid);
        }
    }
    
    if ($nodefaultresponse) {
        // Don't display feedback
        redirect("$CFG->wwwroot/mod/lesson/view.php?id=$cm->id&amp;pageid=$newpageid");
    }
    
/// Set Messages

    // This is the warning msg for teachers to inform them that cluster and unseen does not work while logged in as a teacher
    if(has_capability('mod/lesson:manage', $context) and lesson_display_teacher_warning($lesson->id)) {
        $warningvars->cluster = get_string("clusterjump", "lesson");
        $warningvars->unseen = get_string("unseenpageinbranch", "lesson");
        lesson_set_message(get_string("teacherjumpwarning", "lesson", $warningvars));
    }
    // Inform teacher that s/he will not see the timer
    if ($lesson->timed and has_capability('mod/lesson:manage', $context)) {
        lesson_set_message(get_string("teachertimerwarning", "lesson"));
    }
    // Report attempts remaining
    if ($attemptsremaining != 0) {
        lesson_set_message(get_string('attemptsremaining', 'lesson', $attemptsremaining));
    }
    // Report if max attempts reached
    if ($maxattemptsreached != 0) { 
        lesson_set_message('('.get_string("maximumnumberofattemptsreached", "lesson").')');
    }

    $PAGE = page_create_object('mod-lesson-view', $lesson->id);
    $PAGE->set_lessonpageid($page->id);
    $pageblocks = blocks_setup($PAGE);

    $leftcolumnwidth  = bounded_number(180, blocks_preferred_width($pageblocks[BLOCK_POS_LEFT]), 210);
    $rightcolumnwidth = bounded_number(180, blocks_preferred_width($pageblocks[BLOCK_POS_RIGHT]), 210);

/// Print the header, heading and tabs
    $PAGE->print_header();

    include(dirname(__FILE__).'/continue.html');
?>