# The LON-CAPA grading handler.
#
# Handles the viewing of grades.
#
# YEAR=2001
# 2/7,2/9,2/13,4/16,4/17,5/1 Guy Albertelli
# 6/8 Gerd Kortemeyer
# 7/26 Guy Albertelli
# 7/27 H.K. Ng
# 7/30 Guy Albertelli
# 8/6 Scott Harrison
package Apache::grades;
use strict;
use Apache::style;
use Apache::lonxml;
use Apache::lonnet;
use Apache::loncommon;
use Apache::lonhomework;
use Apache::Constants qw(:common);
# ======================================================== Get more information
sub moreinfo {
my ($request,$reason) = @_;
$request->print("Unable to process request: $reason");
if ( $Apache::grades::viewgrades eq 'F' ) {
$request->print('<form action="/adm/grades" method="post">'."\n");
$request->print('<input type="hidden" name="url" value="'.
$ENV{'form.url'}.'"></input>'."\n");
$request->print('<input type="hidden" name="command" value="'.
$ENV{'form.command'}.'"></input>'."\n");
$request->print("Student:".
'<input type="text" name="student" value="'.
$ENV{'form.student'}.'"></input>'."<br />\n");
$request->print("Domain:".
'<input type="text" name="domain" value="'.
$ENV{'user.domain'}.'"></input>'."<br />\n");
$request->print('<input type="submit" name="submit" '.
'value="ReSubmit"></input>'."<br />\n");
$request->print('</form>');
}
return '';
}
# ========================================= Displays the class list of students
sub listStudents {
my ($request) = shift;
my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
my $chome = $ENV{"course.$ENV{'request.course.id'}.home"};
$request->print ("Found $cdom:$cnum:$chome<br />");
my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
my ($sname,$sdom) = split(/:/,$student);
my $reply = &Apache::lonnet::reply('get:'.$sdom.':'.$sname.
':environment:lastname&generation&firstname&middle'.
'name',&Apache::lonnet::homeserver($sname,$sdom));
print "reply=$reply<br>";
my (@nameparts) = split /&/,$reply;
# my $sfullname = $Apache::lonnet::unescape($nameparts[0]);
if ( $Apache::grades::viewgrades eq 'F' ) {
$request->print('<form action="/adm/grades" method="post">'."\n");
$request->print("$sname @nameparts\n");
$request->print('<input type="hidden" name="url" value="'.
$ENV{'form.url'}.'"></input>'."\n");
$request->print('<input type="hidden" name="command" value="'.
$ENV{'form.command'}.'"></input>'."\n");
$request->print('<input type="hidden" name="student" '.
'value="'.$sname.'"></input>'."\n");
$request->print('<input type="hidden" name="domain" '.
'value="'.$sdom.'"></input>'."\n");
$request->print('<input type="submit" name="submit" '.
'value="View"></input>'."<br />\n");
$request->print('</form>');
}
}
}
# ========== Finds a user based on a name substring (returns a 2 element array)
#FIXME - needs to handle multiple matches
sub finduser {
my ($name) = @_;
my $domain = '';
if ( $Apache::grades::viewgrades eq 'F' ) {
#get classlist
my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
my $chome = $ENV{"course.$ENV{'request.course.id'}.home"};
#print "Found $cdom:$cnum:$chome<br />";
my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
my ($posname,$posdomain) = split(/:/,$student);
if ($posname =~ $name) {
$name = $posname;
$domain = $posdomain;
last;
}
}
return ($name,$domain);
} else {
return ($ENV{'user.name'},$ENV{'user.domain'});
}
}
# ===================================== Gets a class list (returns a hash list)
sub getclasslist {
my ($coursedomain,$coursenum,$coursehome,$hideexpired) = @_;
my $classlist = &Apache::lonnet::reply('dump:'.$coursedomain.':'.
$coursenum.':classlist',$coursehome);
my %classlist = ();
my $now = time;
foreach my $record (split /&/, $classlist) {
my ($name,$value)=split(/=/,&Apache::lonnet::unescape($record));
my ($end,$start)=split(/:/,$value);
# still a student?
if (($hideexpired) && ($end) && ($end < $now)) {
print "Skipping:$name:$end:$now<br />\n";
next;
}
print "record=$record<br>";
push( @{ $classlist{'allids'} }, $name);
}
return (%classlist);
}
# ============================== Get parts of a stored value (returns an array)
sub getpartlist {
my ($url) = @_;
my @parts =();
my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
foreach my $key (@metakeys) {
if ( $key =~ m/stores_([0-9]+)_.*/ ) {
push(@parts,$key);
}
}
return @parts;
}
# =================================== Displays student grade (returns a string)
sub viewstudentgrade {
my ($url,$symb,$courseid,$student,@parts) = @_;
my $result = '';
my $cellclr = '"#ffffdd"';
my ($stuname,$domain) = split(/:/,$student);
my %record = &Apache::lonnet::restore($symb,$courseid,$domain,$stuname);
$result .= "<tr><td bgcolor=$cellclr>$stuname</td><td bgcolor=".
"\"$cellclr\" align=\"middle\">$domain</td>\n";
foreach my $part (@parts) {
my ($temp,$part,$type)=split(/_/,$part);
#print "resource.$part.$type = ".$record{"resource.$part.$type"}." <br />\n";
if ($type eq 'awarded') {
my $score = $record{"resource.$part.$type"};
$result .= "<td bgcolor=$cellclr align=\"middle\">".
"<input type=\"text\" name=".
"\"GRADE.$student.$part.$type\" ".
"value=\"$score\" size=\"4\" /></td>\n";
} elsif ($type eq 'tries') {
my $score = $record{"resource.$part.$type"};
$result .= "<td bgcolor=$cellclr align=\"middle\"><input ".
"type=\"text\" name=\"GRADE.$student.$part.".
"$type\" value=\"$score\" size=\"4\" /></td>\n";
} elsif ($type eq 'solved') {
my $score = $record{"resource.$part.$type"};
$result .= "<td bgcolor=\"$cellclr\" align=\"middle\">".
"<select name=\"GRADE.$student.$part.$type\">\n";
if ($score =~ /^correct/) {
$result .= "<option selected=\"on\">correct</option>".
"\n<option>incorrect</option>\n<option>".
"excused</option>\n<option>ungraded".
"</option>\n<option>nothing</option>\n";
} elsif ($score =~ /^incorrect/) {
$result .= "<option>correct</option>\n<option ".
"selected=\"on\">incorrect</option>\n".
"<option>excused</option>\n<option>".
"ungraded</option>\n<option>nothing</option>\n";
} elsif ($score eq '') {
$result .= "<option>correct</option>\n<option> ".
"incorrect</option>\n<option>excused".
"</option>\n<option>ungraded</option>\n".
"<option selected=\"on\">nothing</option>\n";
} elsif ($score =~ /^excused/) {
$result .= "<option>correct</option>\n<option>".
"incorrect</option>\n<option selected=".
"\"on\">excused</option>\n<option>".
"ungraded</option>\n<option>nothing</option>\n";
} elsif ($score =~ /^ungraded/) {
$result .= "<option>correct</option>\n<option>".
"incorrect</option>\n<option>excused".
"</option>\n<option selected=\"on\">".
"ungraded</option>\n<option>nothing</option>\n";
}
$result .= "</select></td>\n";
}
}
$result .= '</tr>';
return $result;
}
# ========================================================== Sets student grade
#FIXME need to look at the meatdata <stores> spec
# on what type of data to accept and provide an
#interface based on that, also do that to above function.
sub setstudentgrade {
my ($url,$symb,$courseid,$student,@parts) = @_;
my $result ='';
my ($stuname,$domain) = split(/:/,$student);
my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);
my %newrecord;
foreach my $part (@parts) {
my ($temp,$part,$type) = split(/_/,$part);
my $oldscore = $record{"resource.$part.$type"};
my $newscore = $ENV{"form.GRADE.$student.$part.$type"};
if ($type eq 'solved') {
my $update = 0;
if ($newscore eq 'nothing' ) {
if ($oldscore ne '') {
$update = 1;
$newscore = '';
}
} elsif ($oldscore !~ m/^$newscore/) {
$update=1;
$result.="Updating $stuname to $newscore<br />\n";
if ($newscore eq 'correct') {
$newscore = 'correct_by_override'; }
if ($newscore eq 'incorrect') {
$newscore = 'incorrect_by_override'; }
if ($newscore eq 'excused') {
$newscore = 'excused'; }
if ($newscore eq 'ungraded') {
$newscore = 'ungraded_attempted'; }
} else {
#$result.="$stuname:$part:$type:unchanged $oldscore to $newscore:<br />\n";
}
if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }
} else {
if ($oldscore ne $newscore) {
$newrecord{"resource.$part.$type"}=$newscore;
$result .= "Updating $student"."'s status for $part.$type to ".
"$newscore<br />\n";
} else {
#$result.="$stuname:$part:$type:unchanged $oldscore to $newscore:<br />\n";
}
}
}
if ( scalar(keys(%newrecord)) > 0 ) {
$newrecord{"resource.regrader"} = $ENV{'user.name'}.':'.
$ENV{'user.domain'};
&Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$stuname);
$result .= 'Stored away '.scalar(keys(%newrecord)).
" elements.<br />\n";
}
return $result;
}
# ========================================================== Attempt submission
sub submission {
my ($request) = @_;
my $url = $ENV{'form.url'};
$url =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
if ($ENV{'form.student'} eq '') {
&moreinfo($request,"Need student login id"); return ''; }
# if ($ENV{'form.student'} eq '') { &listStudents($request); return ''; }
my ($uname,$udom) = &finduser($ENV{'form.student'});
if ($uname eq '') {
&moreinfo($request,"Unable to find student"); return ''; }
my $symb=&Apache::lonnet::symbread($url);
if ($symb eq '') {
$request->print("Unable to handle ambiguous references:$url:.");
return ''; }
my $answer = &Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
$ENV{'request.course.id'});
my $result = "<h2> Submission Record </h2> $uname:$udom for $url <br />".
$answer;
return $result;
}
# ================================================================= View grades
sub viewgrades {
my ($request) = @_;
my $result = '';
#get resource reference
my $url = $ENV{'form.url'};
$url =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
my $symb=$ENV{'form.symb'};
if (!$symb) { $symb = &Apache::lonnet::symbread($url); }
if ($symb eq '') {
$request->print("Unable to handle ambiguous references:$url:.");
return '';
}
#get classlist
my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
my $chome = $ENV{"course.$ENV{'request.course.id'}.home"};
#print "Found $cdom:$cnum:$chome<br />";
my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
my $headerclr = '"#ccffff"';
my $cellclr = '"#ffffcc"';
#get list of parts for this problem
my (@parts) = &getpartlist($url);
$request->print("<h2><font color=\"#339966\">Manual Grading</font></h2>");
#start the form
$result = '<form action="/adm/grades" method="post">'."\n".
'<input type="hidden" name="symb" value="'.$symb.'"/>'."\n".
'<input type="hidden" name="url" value="'.$url.'"/>'."\n".
'<input type="hidden" name="command" value="editgrades" />'."\n".
'<input type="submit" name="submit" value="Submit Changes" />'.
"\n".'<table border=0><tr><td bgcolor="#999999">'."\n".
'<table border=0>'."\n".
'<tr><td bgcolor='.$headerclr.'>UserId</td><td bgcolor='.
$headerclr.'>Domain</td>'."\n";
foreach my $part (@parts) {
my $display = &Apache::lonnet::metadata($url,$part.'.display');
if (!$display) {
$display = &Apache::lonnet::metadata($url,$part.'.name'); }
$result .= '<td bgcolor='.$headerclr.'>'.$display.'</td>'."\n";
}
$result .= "</tr>";
#get info for each student
foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
$result .= &viewstudentgrade($url,$symb,$ENV{'request.course.id'},
$student,@parts);
}
$result .= '</table></td></tr></table><input type="submit" name="submit"'.
'value="Submit Changes" /></form>';
return $result;
}
# ================================================================= Edit grades
sub editgrades {
my ($request) = @_;
my $result='';
my $symb = $ENV{'form.symb'};
if ($symb eq '') {
$request->print("Unable to handle ambiguous references:$symb:".
$ENV{'form.url'});
return '';
}
my $url = $ENV{'form.url'};
#get classlist
my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
my $chome = $ENV{"course.$ENV{'request.course.id'}.home"};
#print "Found $cdom:$cnum:$chome<br />";
my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
#get list of parts for this problem
my (@parts) = &getpartlist($url);
$result .= '<form action="/adm/grades" method="post">'."\n".
'<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
'<input type="hidden" name="url" value="'.$url.'" />'."\n".
'<input type="hidden" name="command" value="viewgrades" />'.
"\n".'<input type="submit" name="submit" value="See Grades" />'.
'<br />'."\n";
foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
$result .= &setstudentgrade($url,$symb,$ENV{'request.course.id'},
$student,@parts);
}
$result .= '<input type="submit" name="submit" value="See Grades" />'.
'</table></form>';
return $result;
}
# ================================================================= Send header
sub send_header {
my ($request) = @_;
$request->print(&Apache::lontexconvert::header());
# $request->print("
#<script>
#remotewindow=open('','homeworkremote');
#remotewindow.close();
#</script>");
$request->print('<body bgcolor="#FFFFFF">');
}
# ================================================================= Send footer
sub send_footer {
my ($request) = @_;
$request->print('</body>');
$request->print(&Apache::lontexconvert::footer());
}
# ===================================================================== Handler
sub handler {
my $request = $_[0];
if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}
else {$Apache::lonxml::debug=0;}
if ($ENV{'browser.mathml'}) {
$request->content_type('text/xml');
} else {
$request->content_type('text/html');
}
$request->send_http_header;
return OK if $request->header_only;
my $url = $ENV{'form.url'};
my $symb = $ENV{'form.symb'};
my $command = $ENV{'form.command'};
&send_header($request);
if ($url eq '' && $symb eq '') {
$request->print("Non-Contextual Access Unsupported:$command:$url:");
} else {
$Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',
$ENV{'request.course.id'});
if ($command eq 'submission') {
$request->print(&listStudents($request))
if ($ENV{'form.student'} eq '');
$request->print(&submission($request))
if ($ENV{'form.student'} ne '');
} elsif ($command eq 'viewgrades') {
$request->print(&viewgrades($request));
} elsif ($command eq 'editgrades') {
$request->print(&editgrades($request));
} else {
$request->print("Unknown action:$command:");
}
}
&send_footer($request);
return OK;
}
1;
__END__
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>