moodle-mod_game/bookquiz/view.php

<?PHP // $Id: view.php,v 1.5 2012/07/25 11:16:05 bdaloukas Exp $

require_once('../../config.php');
require_once('lib.php');

$id        = required_param('id', PARAM_INT);           // Course Module ID
$chapterid = optional_param('chapterid', 0, PARAM_INT); // Chapter ID
$edit      = optional_param('edit', -1, PARAM_BOOL);     // Edit mode

// =========================================================================
// security checks START - teachers edit; students view
// =========================================================================
if (!$cm = get_coursemodule_from_id('book', $id)) {
    print_error('Course Module ID was incorrect');
}

if (!$course = $DB->get_record('course', array( 'id'=> $cm->course))) {
    print_error('Course is misconfigured');
}

if (!$book = $DB->get_record('book', array( 'id' => $cm->instance))) {
    print_error('Course module is incorrect');
}

require_course_login($course, true, $cm);

$context = get_context_instance(CONTEXT_MODULE, $cm->id);

/// read chapters
$select = $allowedit ? "bookid = $book->id" : "bookid = $book->id AND hidden = 0";
$chapters = $DB->get_records_select('book_chapters', $select, null, 'pagenum', 'id, pagenum, subchapter, title, hidden');

/// check chapterid and read chapter data
if ($chapterid == '0') { // go to first chapter if no given
    foreach($chapters as $ch) {
        if ($allowedit) {
            $chapterid = $ch->id;
            break;
        }
        if (!$ch->hidden) {
            $chapterid = $ch->id;
            break;
        }
    }
}


if (!$chapter = $DB->get_record('book_chapters', array('id' => $chapterid))) {
    print_error('Error reading book chapters.');
}

//check all variables
unset($id);
unset($chapterid);

/// chapter is hidden for students
if (!$allowedit && $chapter->hidden) {
   print_error('Error reading book chapters.');
}

/// chapter not part of this book!
if ($chapter->bookid != $book->id) {
   print_error('Chapter not part of this book!');
}
// =========================================================================
// security checks  END
// =========================================================================

add_to_log($course->id, 'book', 'view', 'view.php?id='.$cm->id.'&amp;chapterid='.$chapter->id, $book->id, $cm->id);


///read standard strings
$strbooks = get_string('modulenameplural', 'book');
$strbook  = get_string('modulename', 'book');
$strTOC = get_string('TOC', 'book');

/// prepare header
if ($course->category) {
    $navigation = '<a href="../../course/view.php?id='.$course->id.'">'.$course->shortname.'</a> ->';
} else {
    $navigation = '';
}

$buttons = $allowedit ? '<table cellspacing="0" cellpadding="0"><tr><td>'.update_module_button($cm->id, $course->id, $strbook).'</td>'.
           '<td>&nbsp;</td><td>'.book_edit_button($cm->id, $course->id, $chapter->id).'</td></tr></table>'
           : '&nbsp;';


/// prepare chapter navigation icons
$previd = null;
$nextid = null;
$found = 0;
foreach ($chapters as $ch) {
    if ($found) {
        $nextid= $ch->id;
        break;
    }
    if ($ch->id == $chapter->id) {
        $found = 1;
    }
    if (!$found) {
        $previd = $ch->id;
    }
}
if ($ch == current($chapters)) {
    $nextid = $ch->id;
}
$chnavigation = '';
echo "previd=$previd nextid=$nextid<br>";

if ($previd) {
    $chnavigation .= '<a title="'.get_string('navprev', 'book').'" href="view.php?id='.$cm->id.'&amp;chapterid='.$previd.'"><img src="'.$OUTPUT->pix_url('bookquiz/nav_prev', 'mod_game').'" class="bigicon" alt="'.get_string('navprev', 'book').'"/></a>';
} else {
    $chnavigation .= '<img src="'.$OUTPUT->pix_url('bookquiz/nav_prev_dis', 'mod_game').'" class="bigicon" alt="" />';
}

if ($nextid) {
    $chnavigation .= '<a title="'.get_string('navnext', 'book').'" href="view.php?id='.$cm->id.'&amp;chapterid='.$nextid.'"><img src="'.$OUTPUT->pix_url('bookquiz/nav_next', 'mod_game').'" class="bigicon" alt="'.get_string('navnext', 'book').'" /></a>';
} else {
    $sec = '';
    if ($section = $DB->get_record('course_sections', array( 'id' => $cm->section))) {
        $sec = $section->section;
    }
    $chnavigation .= '<a title="'.get_string('navexit', 'book').'" href="../../course/view.php?id='.$course->id.'#section-'.$sec.'"><img src="'.$OUTPUT->pix_url('bookquiz/nav_exit', 'mod_game').'" class="bigicon" alt="'.get_string('navexit', 'book').'" /></a>';
}

echo "chnavigation=$chnavigation<br>";

/// prepare print icons
if ($book->disableprinting) {
    $printbook = '';
    $printchapter = '';
} else {
    $printbook = '<a title="'.get_string('printbook', 'book').'" href="print.php?id='.$cm->id.'" onclick="this.target=\'_blank\'"><img src="'.$OUTPUT->pix_url('bookquiz/print_book', 'mod_game').'" class="bigicon" alt="'.get_string('printbook', 'book').'"/></a>';
    $printchapter = '<a title="'.get_string('printchapter', 'book').'" href="print.php?id='.$cm->id.'&amp;chapterid='.$chapter->id.'" onclick="this.target=\'_blank\'"><img src="'.$OUTPUT->pix_url('bookquiz/print_chapter', 'mod_game').'" class="bigicon" alt="'.get_string('printchapter', 'book').'"/></a>';
}


// =====================================================
// Book display HTML code
// =====================================================
echo "OK";
?>
<table border="0" cellspacing="0" width="100%" valign="top" cellpadding="2">

<!-- subchapter title and upper navigation row //-->
<tr>
    <td width="<?php echo  10;?>" valign="bottom">
    </td>
    <td valign="top">
        <table border="0" cellspacing="0" width="100%" valign="top" cellpadding="0">
        <tr>
            <td align="right"><?php echo 'help'.$chnavigation ?></td>
        </tr>
        </table>
    </td>
</tr>

<!-- toc and chapter row //-->
<tr>
    <td width="<?php echo $tocwidth ?>" valign="top" align="left">
        <?php
        echo $OUTPUT->box_start('generalbox');
        echo $toc;
        echo $OUTPUT->box_end();
        if ($allowedit && $edit) {
            echo '<font size="1"><br />';
            helpbutton('faq', get_string('faq','book'), 'book', true, true);
            echo '</font>';
        }
        ?>
    </td>
    <td valign="top" align="right">
        <?php
        echo $OUTPUT->box_start('generalbox');
        $content = '';
        if (!$book->customtitles) {
          if ($currsubtitle == '&nbsp;') {
              $content .= '<p class="book_chapter_title">'.$currtitle.'</p>';
          } else {
              $content .= '<p class="book_chapter_title">'.$currtitle.'<br />'.$currsubtitle.'</p>';
          }
        }
        $content .= $chapter->content;

        $nocleanoption = new object();
        $nocleanoption->noclean = true;
        echo '<div class="book_content">';
        echo format_text($content, FORMAT_HTML, $nocleanoption, $course->id);
        echo '</div>';
        echo $OUTPUT->box_end();
        /// lower navigation
        echo '<p>'.$chnavigation.'</p>';
        ?>
    </td>
</tr>
</table>

<?php
echo $OUTPUT->footer($course);

?>