# The LON-CAPA Grading handler
# 2/9,2/13 Guy Albertelli
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);
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");
$request->print('</form>');
}
return '';
}
#FIXME - needs to be much smarter
sub finduser {
my ($name) = @_;
if ( $Apache::grades::viewgrades eq 'F' ) {
return ($name,$ENV{'user.domain'});
} else {
return ($ENV{'user.name'},$ENV{'user.domain'});
}
}
sub getclasslist {
my ($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;
}
push( @{ $classlist{'allids'} }, $name);
}
return (%classlist);
}
sub getpartlist {
my ($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;
}
sub viewstudentgrade {
my ($url,$symb,$courseid,$student,@parts) = @_;
my $result ='';
my ($stuname,$domain) = split(/:/,$student);
my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname,
&Apache::lonnet::homeserver($stuname,$domain));
$result.="<tr><td>$stuname</td><td>$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"};
$result.="<td><input type=\"text\" name=\"GRADE.$stuname.$part.$type\" value=\"$score\" size=\"4\" /></td>\n";
} elsif ($type eq 'tries') {
my $score=$record{"resource.$part.$type"};
$result.="<td><input type=\"text\" name=\"GRADE.$stuname.$part.$type\" value=\"$score\" size=\"4\" /></td>\n"
} elsif ($type eq 'solved') {
my $score=$record{"resource.$part.$type"};
$result.="<td><select name=\"GRADE.$stuname.$part.$type\">\n";
if ($score =~ /^correct/) {
$result.="<option selected=\"on\">Correct</option>\n<option>Incorrect</option>\n<option>Excused</option>\n<option>Attempted</option>\n<option>Nothing</option>\n";
} elsif ($score =~ /^incorrect/) {
$result.="<option>Correct</option>\n<option selected=\"on\">Incorrect</option>\n<option>Excused</option>\n<option>Attempted</option>\n<option>Nothing</option>\n";
} elsif ($score eq '') {
$result.="<option>Correct</option>\n<option>Incorrect</option>\n<option>Excused</option>\n<option>Attempted</option>\n<option selected=\"on\">Nothing</option>\n";
} elsif ($score =~ /^excused/) {
$result.="<option>Correct</option>\n<option>Incorrect</option>\n<option selected=\"on\">Excused</option>\n<option>Attempted</option>\n<option>Nothing</option>\n";
} elsif ($score =~ /^ungraded/) {
$result.="<option>Correct</option>\n<option>Incorrect</option>\n<option>Excused</option>\n<option selected=\"on\">Attempted</option>\n<option>Nothing</option>\n";
}
$result.="</select></td>\n";
}
}
$result.='</tr>';
return $result;
}
sub setstudentgrade {
my ($url,$symb,$courseid,$student,@parts) = @_;
my $result ='Hi!';
my ($stuname,$domain) = split(/:/,$student);
my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname,
&Apache::lonnet::homeserver($stuname,$domain));
my %newrecord;
foreach my $part (@parts) {
my ($temp,$part,$type)=split(/_/,$part);
my $oldscore=$record{"resource.$part.$type"};
my $newscore=$ENV{"GRADE.$stuname.$part.$type"};
if ($oldscore != $newscore) {
$result.="$stuname:$part:$type:changed from $oldscore to $newscore:<br />\n";
} else {
$result.="$stuname:$part:$type:changed same $oldscore to $newscore:<br />\n";
}
}
return $result;
}
sub submission {
my ($request) = @_;
my $url=$ENV{'form.url'};
$url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
if ($ENV{'form.student'} eq '') { &moreinfo($request,"Need student login id"); return ''; }
my ($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 $home=&Apache::lonnet::homeserver($uname,$udom);
my $answer=&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,$home,
$ENV{'request.course.id'});
my $result="<h2> Submission Record </h2> $uname:$udom for $url".$answer;
return $result;
}
sub viewgrades {
my ($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');
#get list of parts for this problem
my (@parts) = &getpartlist($url);
#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>'."\n".
'<tr><td>UserId</td><td>Domain</td><td>Portion Correct</td><td>Status</td><td>Tries</td></tr>'."\n";
#get info for each student
foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
$result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);
}
$result.='</table><input type="submit" name="submit" value="Submit Changes" /></form>';
return $result;
}
sub editgrades {
my ($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" />'."\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 $result;
}
sub send_header {
my ($request)= @_;
$request->print(&Apache::lontexconvert::header());
$request->print("
<script>
remotewindow=open('','homeworkremote');
remotewindow.close();
</script>");
$request->print('<body bgcolor="#FFFFFF">');
}
sub send_footer {
my ($request)= @_;
$request->print('</body>');
$request->print(&Apache::lontexconvert::footer());
}
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') {
$request->print(&submission($request));
} 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__;
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