--- loncom/interface/Attic/lonchart.pm 2001/02/06 20:50:04 1.4
+++ loncom/interface/Attic/lonchart.pm 2002/02/28 23:35:31 1.35
@@ -1,4 +1,31 @@
# The LearningOnline Network with CAPA
+# (Publication Handler
+#
+# $Id: lonchart.pm,v 1.35 2002/02/28 23:35:31 albertel Exp $
+#
+# Copyright Michigan State University Board of Trustees
+#
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
+#
+# LON-CAPA is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# LON-CAPA is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with LON-CAPA; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# /home/httpd/html/adm/gpl.txt
+#
+# http://www.lon-capa.org/
+#
+#
# Homework Performance Chart
#
# (Navigate Maps Handler
@@ -6,88 +33,164 @@
# (Page Handler
#
# (TeX Content Handler
-#
+# YEAR=2000
# 05/29/00,05/30 Gerd Kortemeyer)
# 08/30,08/31,09/06,09/14,09/15,09/16,09/19,09/20,09/21,09/23,
# 10/02,10/10,10/14,10/16,10/18,10/19,10/31,11/6,11/14,11/16 Gerd Kortemeyer)
+# YEAR=2001
+# 3/1/1,6/1,17/1,29/1,30/1,31/1 Gerd Kortemeyer)
+# 7/10/01 Behrouz Minaei
+# 9/8 Gerd Kortemeyer
+# 10/1, 10/19, 11/17, 11/22, 11/24, 11/28 12/18 Behrouz Minaei
+# YEAR=2002
+# 2/1, 2/6, 2/19, 2/28 Behrouz Minaei
#
-# 3/1/1,6/1,17/1,29/1,30/1 Gerd Kortemeyer)
-#
-# 1/31 Gerd Kortemeyer
+###
package Apache::lonchart;
use strict;
use Apache::Constants qw(:common :http);
use Apache::lonnet();
+use Apache::loncommon();
use HTML::TokeParser;
use GDBM_File;
# -------------------------------------------------------------- Module Globals
my %hash;
+my %CachData;
my @cols;
my @rowlabels;
my @students;
-
+my @PreCol;
+my $r;
+
# ------------------------------------------------------------- Find out status
-sub astatus {
- my ($rid,$student)=@_;
- my ($uname,$udom)=split(/\:/,$student);
- my $code=' ';
- $rid=~/(\d+)\.(\d+)/;
- my $symb=&Apache::lonnet::declutter($hash{'map_id_'.$1}).'___'.$2.'___'.
- &Apache::lonnet::declutter($hash{'src_'.$rid});
- my $answer=&Apache::lonnet::reply(
- "restore:$udom:$uname:".
- $ENV{'request.course.id'}.':'.
- &Apache::lonnet::escape($symb),
- &Apache::lonnet::homeserver($uname,$udom));
- my %returnhash=();
- map {
- my ($name,$value)=split(/\=/,$_);
- $returnhash{&Apache::lonnet::unescape($name)}=
- &Apache::lonnet::unescape($value);
- } split(/\&/,$answer);
- if ($returnhash{'version'}) {
- my $version;
- for ($version=1;$version<=$returnhash{'version'};$version++) {
- map {
- $returnhash{$_}=$returnhash{$version.':'.$_};
- } split(/\:/,$returnhash{$version.':keys'});
- }
- my $totaltries=0;
- map {
- if (($_=~/\.(\w+)\.solved$/) && ($_!~/^\d+\:/)) {
- my $part=$1;
- if ($returnhash{$_} eq 'correct_by_student') {
- unless (($code eq '.') || ($code eq '-')) { $code='*'; }
- $totaltries+=$returnhash{'resource.'.$part.'.tries'};
- } elsif ($returnhash{$_} eq 'correct_by_override') {
- unless (($code eq '.') || ($code eq '-')) { $code='+'; }
- } elsif ($returnhash{$_} eq 'incorrect_attempted') {
- $code='.';
- } elsif ($returnhash{$_} eq 'incorrect_by_override') {
- $code='-';
- } elsif ($returnhash{$_} eq 'excused') {
- unless (($code eq '.') || ($code eq '-')) { $code='x'; }
- }
- }
- } keys %returnhash;
- if (($code eq '*') && ($totaltries<10)) { $code="$totaltries"; }
+sub ExtractStudentData {
+ my ($index,$coid)=@_;
+ my ($sname,$sdom) = split( /\:/, $students[$index] );
+ my $shome=&Apache::lonnet::homeserver( $sname,$sdom );
+ my $reply=&Apache::lonnet::reply('dump:'.$sdom.':'.$sname.':'.$coid,$shome );
+ my %result=();
+ my $ResId;
+ my $Code;
+ my $Tries;
+ my $Wrongs;
+ my %TempHash;
+ my $Version;
+ my $ProbNo;
+ my $ProbSolved;
+ my $ProbTotal;
+ my $LatestVersion;
+ my $Str=substr($students[$index].
+ ' ',0,14).' ! '.
+ substr($rowlabels[$index].
+ ' ',0,45).' ! ';
+ unless ($reply=~/^error\:/) {
+ foreach (split(/\&/,$reply)) {
+ my ($name,$value)=split(/\=/,&Apache::lonnet::unescape($_));
+ $result{$name}=$value;
+ }
+ $ProbNo = 0;
+ $ProbTotal = 0;
+ $ProbSolved = 0;
+ my $IterationNo = 0;
+ foreach $ResId (@cols) {
+ if ($IterationNo == 0) {$IterationNo++; next;}
+ if (!$ResId) {
+ my $PrNo = sprintf( "%3d", $ProbNo );
+ $Str .= ' '.'<font color="#007700">'.$PrNo.'</font> ';
+ $ProbSolved += $ProbNo;
+ $ProbNo=0;
+ next;
+ }
+ $ResId=~/(\d+)\.(\d+)/;
+ my $meta=$hash{'src_'.$ResId};
+ my $PartNo = 0;
+ undef %TempHash;
+ foreach (split(/\,/,&Apache::lonnet::metadata($meta,'keys'))) {
+ if ($_=~/^stores\_(\d+)\_tries$/) {
+ my $Part=&Apache::lonnet::metadata($meta,$_.'.part');
+ if ( $TempHash{"$Part"} eq '' ) {
+ $TempHash{"$Part"} = $Part;
+ $TempHash{$PartNo}=$Part;
+ $TempHash{"$Part.Code"} = ' ';
+ $PartNo++;
+ }
+ }
+ }
+
+ my $Prob = &Apache::lonnet::declutter( $hash{'map_id_'.$1} ).
+ '___'.$2.'___'.
+ &Apache::lonnet::declutter( $hash{'src_'.$ResId} );
+ $Code=' ';
+ $Tries = 0;
+ $LatestVersion = $result{"version:$Prob"};
+
+ if ( $LatestVersion ) {
+ for ( my $Version=1; $Version<=$LatestVersion; $Version++ ) {
+ my $vkeys = $result{"$Version:keys:$Prob"};
+ my @keys = split(/\:/,$vkeys);
+
+ foreach my $Key (@keys) {
+ if (($Key=~/\.(\w+)\.solved$/) && ($Key!~/^\d+\:/)) {
+ my $Part = $1;
+ $Tries = $result{"$Version:$Prob:resource.$Part.tries"};
+ $TempHash{"$Part.Tries"}=($Tries) ? $Tries : 0;
+ my $Val = $result{"$Version:$Prob:resource.$Part.solved"};
+ if ($Val eq 'correct_by_student'){$Code='*';}
+ elsif ($Val eq 'correct_by_override'){$Code = '+';}
+ elsif ($Val eq 'incorrect_attempted'){$Code = '.';}
+ elsif ($Val eq 'incorrect_by_override'){$Code = '-';}
+ elsif ($Val eq 'excused'){$Code = 'x';}
+ elsif ($Val eq 'ungraded_attempted'){$Code = '#';}
+ else {$Code = ' ';}
+ $TempHash{"$Part.Code"} = $Code;
+ }
+ }
+ }
+ for ( my $n = 0; $n < $PartNo; $n++ ) {
+ my $part = $TempHash{$n};
+ my $Code = $TempHash{"$part.Code"};
+ if ( $Code eq '*') {
+ $ProbNo++;
+ if (($TempHash{"$part.Tries"}<10) ||
+ ($TempHash{"$part.Tries"} eq '')) {
+ $TempHash{"$part.Code"}=$TempHash{"$part.Tries"};
+ }
+ }
+ elsif ( $Code eq '+' ) {$ProbNo++;}
+ $Str .= $TempHash{"$part.Code"};
+ if ( $Code ne 'x' ) {$ProbTotal++;}
+ }
+ }
+ else {
+ for(my $n=0; $n<$PartNo; $n++) {
+ $Str.=' ';
+ $ProbTotal++;
+ }
+ }
+ }
}
- return $code;
+ my $PrTot = sprintf( "%5d", $ProbTotal );
+ my $PrSvd = sprintf( "%5d", $ProbSolved );
+ $Str .= ' '.'<font color="#000088">'.$PrSvd.' /'.$PrTot.'</font> ';
+
+ return $Str ;
}
+
# ------------------------------------------------------------ Build page table
sub tracetable {
my ($rid,$beenhere)=@_;
unless ($beenhere=~/\&$rid\&/) {
$beenhere.=$rid.'&';
+# new ... updating the map according to sequence and page
if (defined($hash{'is_map_'.$rid})) {
- if ($hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}}
- eq 'sequence') {
+ my $cmap=$hash{'map_type_'.$hash{'map_pc_'.$hash{'src_'.$rid}}};
+ if ( $cmap eq 'sequence' || $cmap eq 'page' ) {
$cols[$#cols+1]=0;
}
if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
@@ -114,188 +217,310 @@ sub tracetable {
}
}
if (defined($hash{'to_'.$rid})) {
- map {
+ foreach (split(/\,/,$hash{'to_'.$rid})){
&tracetable($hash{'goesto_'.$_},$beenhere);
- } split(/\,/,$hash{'to_'.$rid});
+ }
}
}
}
-# ================================================================ Main Handler
-
-sub handler {
- my $r=shift;
-
- if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
-# ------------------------------------------- Set document type for header only
-
- if ($r->header_only) {
- if ($ENV{'browser.mathml'}) {
- $r->content_type('text/xml');
- } else {
- $r->content_type('text/html');
- }
- $r->send_http_header;
- return OK;
- }
-
- my $requrl=$r->uri;
-# ----------------------------------------------------------------- Tie db file
- if ($ENV{'request.course.fn'}) {
- my $fn=$ENV{'request.course.fn'};
- if (-e "$fn.db") {
- if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
-# ------------------------------------------------------------------- Hash tied
-
-# ------------------------------------------------------------------ Build page
-
-# ---------------------------------------------------------------- Send headers
-
- $r->content_type('text/html');
- $r->send_http_header;
- $r->print(
- '<html><head><title>LON-CAPA Assessment Chart</title></head>');
-
- $r->print('<body bgcolor="#FFFFFF">'.
- '<script>window.focus();</script>'.
- '<img align=right src=/adm/lonIcons/lonlogos.gif>'.
- '<h1>Assessment Chart</h1>');
-
-# ---------------------------------------------------------------- Course title
-
- $r->print('<h1>'.
- $ENV{'course.'.$ENV{'request.course.id'}.'.description'}.'</h1>');
+sub usection2 {
+ my ($udom,$unam,$courseid,$ActiveFlag)=@_;
+ $courseid=~s/\_/\//g;
+ $courseid=~s/^(\w)/\/$1/;
+ foreach my $elem(split(/\&/,&Apache::lonnet::reply('dump:'.$udom.':'.$unam.':roles',
+ &Apache::lonnet::homeserver($unam,$udom)))) {
+ my ($key,$value)=split(/\=/,$elem);
+ $key=&Apache::lonnet::unescape($key);
+ if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
+ my $section=$1;
+ if ($key eq $courseid.'_st') { $section=''; }
+ my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));
+ my $now=time;
+ my $notactive=0;
+ if ($start) {
+ if ($now<$start) { $notactive=1; }
+ }
+ if ($end) {
+ if ($now>$end) { $notactive=1; }
+ }
+ if ($ActiveFlag == 1) { $notactive=0; }
+ unless ($notactive) { return $section; }
+ }
+ }
+ return '-1';
+}
-# ------------------------------- This is going to take a while, produce output
-
- $r->rflush();
+sub usection {
+ my ($udom,$unam,$courseid)=@_;
+ $courseid=~s/\_/\//g;
+ $courseid=~s/^(\w)/\/$1/;
+ foreach (split(/\&/,&Apache::lonnet::reply('dump:'.
+ $udom.':'.$unam.':roles',
+ &Apache::lonnet::homeserver($unam,$udom)))){
+ my ($key,$value)=split(/\=/,$_);
+ $key=&Apache::lonnet::unescape($key);
+ if ($key=~/^$courseid(?:\/)*(\w+)*\_st$/) {
+ my $section=$1;
+ if ($key eq $courseid.'_st') { $section=''; }
+ my ($dummy,$end,$start)=split(/\_/,&Apache::lonnet::unescape($value));
+# $section=($section) ? $section : '(none)';
+# $section=(int($section)) ? int($section) : $section;
+# $r->print($unam.'...'.$section.'<br>');
+ return $section;
+ }
+ }
+ #} split(/\&/,&Apache::lonnet::reply('dump:'.$udom.':'.$unam.':roles',
+ # &Apache::lonnet::homeserver($unam,$udom)));
+ return '';
+}
+sub BuildChart {
# ----------------------- Get first and last resource, see if there is anything
-
-
- my $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
- my $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
- if (($firstres) && ($lastres)) {
+ my $firstres=$hash{'map_start_/res/'.$ENV{'request.course.uri'}};
+ my $lastres=$hash{'map_finish_/res/'.$ENV{'request.course.uri'}};
+ if (($firstres) && ($lastres)) {
# ----------------------------------------------------------------- Render page
-
- my $cid=$ENV{'request.course.id'};
- my $chome=$ENV{'course.'.$cid.'.home'};
- my ($cdom,$cnum)=split(/\_/,$cid);
-
+ my $cid=$ENV{'request.course.id'};
+ my $chome=$ENV{'course.'.$cid.'.home'};
+ my ($cdom,$cnum)=split(/\_/,$cid);
# ---------------------------------------------- Read class list and row labels
+ my $classlst=&Apache::lonnet::reply
+ ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
+ my $now=time;
+ unless ($classlst=~/^error\:/) {
+ foreach my $KeyPoint(sort split(/\&/,$classlst)) {
+ my ($name,$value)=split(/\=/,$KeyPoint);
+ my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
+ my $active=1;
+ if (($end) && ($now>$end)) { $active=0; }
+
+ if ($ENV{'form.active'} eq 'All Students') { $active=1; }
+
+ if ($active) {
+ my $thisindex=$#students+1;
+ $name=&Apache::lonnet::unescape($name);
+ $students[$thisindex]=$name;
+ my ($sname,$sdom)=split(/\:/,$name);
+ $PreCol[$thisindex]=$sname.':';
+
+ my $ssec=&usection($sdom,$sname,$cid);#,$active);
+
+ if ($ssec==-1) {
+ $rowlabels[$thisindex]=
+ 'Data not available: '.$name;
+ } else {
+ my %reply=&Apache::lonnet::idrget($sdom,$sname);
+ my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
+ ':environment:lastname&generation&firstname&middlename',
+ &Apache::lonnet::homeserver($sname,$sdom));
+ #$ssec=(int($ssec)) ? int($ssec) : $ssec;
+ my $sec=sprintf('%3s',$ssec);
+ $rowlabels[$thisindex]=$sec.' '.$reply{$sname}.' ';
+ $PreCol[$thisindex] .= $reply.':'.$sec;
+ my $i=0;
+ foreach (split(/\&/,$reply)) {
+ $i++;
+ if ( $_ ne '') {
+ $rowlabels[$thisindex].=&Apache::lonnet::unescape($_).' ';
+ }
+ if ($i == 2) {
+ chop($rowlabels[$thisindex]);
+ $rowlabels[$thisindex].=', ';
+ }
+ }
+ }
+ }
+ }
+
+ } else {
+ $r->print('<h1>Could not access course data</h1>');
+ }
+
+ my $allstudents=$#students+1;
+ $r->print('<h3>'.$allstudents.' students</h3>');
+ &CreateForm();
+ $r->rflush();
- undef @rowlabels;
- undef @students;
+# --------------- Find all assessments and put them into some linear-like order
+ &tracetable($firstres,'&'.$lastres.'&');
+# ----------------------------------------------------------------- Start table
- my $classlst=&Apache::lonnet::reply
- ('dump:'.$cdom.':'.$cnum.':classlist',$chome);
- my $now=time;
- unless ($classlst=~/^error\:/) {
- map {
- my ($name,$value)=split(/\=/,$_);
- my ($end,$start)=split(/\:/,&Apache::lonnet::unescape($value));
- my $active=1;
- if (($end) && ($now>$end)) { $active=0; }
- if ($active) {
- my $thisindex=$#students+1;
- $name=&Apache::lonnet::unescape($name);
- $students[$thisindex]=$name;
- my ($sname,$sdom)=split(/\:/,$name);
- my $ssec=&Apache::lonnet::usection($sdom,$sname,$cid);
- if ($ssec==-1) {
- $rowlabels[$thisindex]=
- 'Data not available: '.$name;
- } else {
- my %reply=&Apache::lonnet::idrget($sdom,$sname);
- my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
- ':environment:lastname&generation&firstname&middlename',
- &Apache::lonnet::homeserver($sname,$sdom));
- $rowlabels[$thisindex]=
- sprintf('%3s',$ssec).' '.$reply{$sname}.' ';
- my $i=0;
- map {
- $i++;
- if ( $_ ne '') {
- $rowlabels[$thisindex].=&Apache::lonnet::unescape($_).' ';
- }
- if ($i == 2) {
- chop($rowlabels[$thisindex]);
- $rowlabels[$thisindex].=', ';
- }
- } split(/\&/,$reply);
+ $r->print('<p><pre>');
+ my $index;
+ for ($index=0;$index<=$#students;$index++) {
+ my $Str=&ExtractStudentData($index,$cid);
+ $r->print($Str.'<br>');
+ $r->rflush();
+ $CachData{$PreCol[$index]}=$Str;
+ }
+ $r->print('</pre>');
+ } else {
+ $r->print('<h3>Undefined course sequence</h3>');
+ }
+}
- }
- }
- } sort split(/\&/,$classlst);
+sub CreateForm {
+ my $OpSel1='';
+ my $OpSel2='';
+ if ( $ENV{'form.active'} eq 'All Students' ) { $OpSel2='selected'; }
+ else { $OpSel1 = 'selected'; }
+
+ my $Ptr = '<form name=stat method=post action="/adm/chart" >'."\n";
+ $Ptr .= '<b> Sort by: </b>'."\n";
+ $Ptr .= ' ';
+ $Ptr .= '<input type=submit name=sort value="User Name" />'."\n";
+ $Ptr .= ' ';
+ $Ptr .= '<input type=submit name=sort value="Last Name" />'."\n";
+ $Ptr .= ' ';
+ $Ptr .= '<input type=submit name=sort value="Section"/>'."\n";
+ $Ptr .= '<br><br>';
+ $Ptr .= '<b> Activation Area: </b>'."\n".
+ '<select name="active"> <option '.$OpSel1.' >Active Students</option>'."\n".
+ '<option '.$OpSel2.'>All Students</option> </select> '."\n";
+ $Ptr .= ' ';
+ $Ptr .= '<input type=submit name=sort value="Recalculate Chart"/>'."\n";
+ $Ptr .= '</form>'."\n";
+ $r->print( $Ptr );
+}
- } else {
- $r->print('<h1>Could not access course data</h1>');
+sub CacheChart {
+ my %list = ();
+ my $count=0;
+
+ my $Pos = $ENV{'form.sort'};
+ if ( $Pos eq 'Last Name' ) {$Pos=1;}
+ elsif ( $Pos eq 'Section' ) {$Pos=2;}
+ else {$Pos=0;}
+
+ foreach my $key( keys %CachData) {
+ my @Temp=split(/\:/,$key);
+ my $Use = $Temp[$Pos];
+ $list{$Use.$key}=$key;
+ $count++;
}
- my $allstudents=$#students+1;
- $r->print('<h3>'.$allstudents.' students</h3>');
+ my @order = sort(keys(%list));
+
+ $r->print('<h3>'.$count.' students</h3>');
+ &CreateForm();
$r->rflush();
+
+ $r->print('<p><pre>');
+ for ( my $n; $n < $count; $n++) {
+ $r->print($CachData{$list{$order[$n]}}.'<br>');
+ }
+ $r->print('</pre>');
+}
-# --------------- Find all assessments and put them into some linear-like order
+sub Start {
+ undef %hash;
+ undef %CachData;
+ undef @students;
+ undef @cols;
+ undef @rowlabels;
+ undef @PreCol;
- &tracetable($firstres,'&'.$lastres.'&');
+ $r->print('<html><head><title>'.
+ 'LON-CAPA Assessment Chart</title></head>');
+ $r->print('<body bgcolor="#FFFFFF">'.
+ '<script>window.focus();</script>'.
+ '<img align=right src=/adm/lonIcons/lonlogos.gif>'.
+ '<h1>Assessment Chart</h1>');
+# ---------------------------------------------------------------- Course title
+ $r->print('<h1>'.$ENV{'course.'.$ENV{'request.course.id'}.
+ '.description'}.'</h1><h3>'.localtime().
+ "</h3><p><pre>1..9: correct by student in 1..9 tries\n".
+ " *: correct by student in more than 9 tries\n".
+ " +: correct by override\n".
+ " -: incorrect by override\n".
+ " .: incorrect attempted\n".
+ " #: ungraded attempted\n".
+ " : not attempted\n".
+ " x: excused</pre><p>");
+# ------------------------------- This is going to take a while, produce output
+ $r->rflush();
-# ----------------------------------------------------------------- Start table
+ my $cid=$ENV{'request.course.id'};
+ my $ChartDB = "/home/httpd/perl/tmp/$ENV{'user.name'}".
+ "_$ENV{'user.domain'}_$cid\_chart.db";
+
+ if ((-e "$ChartDB") && ($ENV{'form.sort'} ne 'Recalculate Chart')) {
+ if (tie(%CachData,'GDBM_File',"$ChartDB",&GDBM_READER,0640)) {
+ &CacheChart();
+ }
+ else {
+ $r->print("Unable to tie hash to db file");
+ }
+ }
+ else {
+ if (tie(%CachData,'GDBM_File',$ChartDB,&GDBM_WRCREAT,0640)) {
+ foreach (keys %CachData) {delete $CachData{$_};}
+ &BuildChart();
+ }
+ else {
+ $r->print("Unable to tie hash to db file");
+ }
+ }
+ untie(%CachData);
+}
- $r->print('<p><pre>');
- my $index;
- for ($index=0;$index<=$#students;$index++) {
- $r->print(
- substr($students[$index].
- ' ',0,14).' ! '.
- substr($rowlabels[$index].
- ' ',0,45).' ! ');
- map {
- if ($_) {
- $r->print(&astatus($_,$students[$index]));
- } else {
- $r->print(' ! ');
- }
- } @cols;
- $r->print("\n");
- $r->rflush();
- }
- $r->print('</pre>');
+# ================================================================ Main Handler
- } else {
- $r->print('<h3>Undefined course sequence</h3>');
- }
+sub handler {
+ $r=shift;
+ if (&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'})) {
+# ------------------------------------------- Set document type for header only
+ if ($r->header_only) {
+ if ($ENV{'browser.mathml'}) {
+ $r->content_type('text/xml');
+ } else {
+ $r->content_type('text/html');
+ }
+ &Apache::loncommon::no_cache($r);
+ $r->send_http_header;
+ return OK;
+ }
- $r->print('</body></html>');
-
+ my $requrl=$r->uri;
+# ----------------------------------------------------------------- Tie db file
+ if ($ENV{'request.course.fn'}) {
+ my $fn=$ENV{'request.course.fn'};
+ if (-e "$fn.db") {
+ if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER,0640)) {
+# ------------------------------------------------------------------- Hash tied
+# ---------------------------------------------------------------- Send headers
+ $r->content_type('text/html');
+ $r->send_http_header;
+ &Start();
+ $r->print('</body></html>');
# ------------------------------------------------------------- End render page
- } else {
- $r->content_type('text/html');
- $r->send_http_header;
- $r->print('<html><body>Coursemap undefined.</body></html>');
- }
+ } else {
+ $r->content_type('text/html');
+ $r->send_http_header;
+ $r->print('<html><body>Coursemap undefined.</body></html>');
+ }
# ------------------------------------------------------------------ Untie hash
- unless (untie(%hash)) {
- &Apache::lonnet::logthis("<font color=blue>WARNING: ".
- "Could not untie coursemap $fn (browse).</font>");
- }
+ unless (untie(%hash)) {
+ &Apache::lonnet::logthis("<font color=blue>WARNING: ".
+ "Could not untie coursemap $fn (browse).</font>");
+ }
# -------------------------------------------------------------------- All done
- return OK;
+ return OK;
# ----------------------------------------------- Errors, hash could no be tied
- }
- } else {
- $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
- return HTTP_NOT_ACCEPTABLE;
-}
-} else {
- $ENV{'user.error.msg'}=
+ }
+ } else {
+ $ENV{'user.error.msg'}="$requrl:bre:0:0:Course not initialized";
+ return HTTP_NOT_ACCEPTABLE;
+ }
+ } else {
+ $ENV{'user.error.msg'}=
$r->uri.":vgr:0:0:Cannot view grades for complete course";
- return HTTP_NOT_ACCEPTABLE;
-
-}
+ return HTTP_NOT_ACCEPTABLE;
+ }
}
1;
__END__