--- loncom/homework/grades.pm 2007/09/07 00:07:30 1.439
+++ loncom/homework/grades.pm 2008/11/11 16:40:47 1.529
@@ -1,7 +1,7 @@
# The LearningOnline Network with CAPA
# The LON-CAPA Grading handler
#
-# $Id: grades.pm,v 1.439 2007/09/07 00:07:30 albertel Exp $
+# $Id: grades.pm,v 1.529 2008/11/11 16:40:47 jms Exp $
#
# Copyright Michigan State University Board of Trustees
#
@@ -26,6 +26,183 @@
# http://www.lon-capa.org/
#
+=head1 NAME
+
+Apache::grades
+
+=head1 SYNOPSIS
+
+Handles the viewing of grades.
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+=head1 OVERVIEW
+
+Do an ssi with retries:
+While I'd love to factor out this with the vesrion in lonprintout,
+that would either require a data coupling between modules, which I refuse to perpetuate (there's quite enough of that already), or would require the invention of another infrastructure
+I'm not quite ready to invent (e.g. an ssi_with_retry object).
+
+At least the logic that drives this has been pulled out into loncommon.
+
+
+
+ssi_with_retries - Does the server side include of a resource.
+ if the ssi call returns an error we'll retry it up to
+ the number of times requested by the caller.
+ If we still have a proble, no text is appended to the
+ output and we set some global variables.
+ to indicate to the caller an SSI error occurred.
+ All of this is supposed to deal with the issues described
+ in LonCAPA BZ 5631 see:
+ http://bugs.lon-capa.org/show_bug.cgi?id=5631
+ by informing the user that this happened.
+
+Parameters:
+ resource - The resource to include. This is passed directly, without
+ interpretation to lonnet::ssi.
+ form - The form hash parameters that guide the interpretation of the resource
+
+ retries - Number of retries allowed before giving up completely.
+Returns:
+ On success, returns the rendered resource identified by the resource parameter.
+Side Effects:
+ The following global variables can be set:
+ ssi_error - If an unrecoverable error occurred this becomes true.
+ It is up to the caller to initialize this to false
+ if desired.
+ ssi_error_resource - If an unrecoverable error occurred, this is the value
+ of the resource that could not be rendered by the ssi
+ call.
+ ssi_error_message - The error string fetched from the ssi response
+ in the event of an error.
+
+
+=head1 HANDLER SUBROUTINE
+
+ssi_with_retries()
+
+=head1 OTHER SUBROUTINES
+
+=over
+
+=item *
+
+
+scantron_get_correction() :
+
+ Builds the interface screen to interact with the operator to fix a
+ specific error condition in a specific scanline
+
+ Arguments:
+ $r - Apache request object
+ $i - number of the current scanline
+ $scan_record - hash ref as returned from &scantron_parse_scanline()
+ $scan_config - hash ref as returned from &get_scantron_config()
+ $line - full contents of the current scanline
+ $error - error condition, valid values are
+ 'incorrectCODE', 'duplicateCODE',
+ 'doublebubble', 'missingbubble',
+ 'duplicateID', 'incorrectID'
+ $arg - extra information needed
+ For errors:
+ - duplicateID - paper number that this studentID was seen before on
+ - duplicateCODE - array ref of the paper numbers this CODE was
+ seen on before
+ - incorrectCODE - current incorrect CODE
+ - doublebubble - array ref of the bubble lines that have double
+ bubble errors
+ - missingbubble - array ref of the bubble lines that have missing
+ bubble errors
+
+=item *
+
+scantron_get_maxbubble() :
+
+ Returns the maximum number of bubble lines that are expected to
+ occur. Does this by walking the selected sequence rendering the
+ resource and then checking &Apache::lonxml::get_problem_counter()
+ for what the current value of the problem counter is.
+
+ Caches the results to $env{'form.scantron_maxbubble'},
+ $env{'form.scantron.bubble_lines.n'},
+ $env{'form.scantron.first_bubble_line.n'} and
+ $env{"form.scantron.sub_bubblelines.n"}
+ which are the total number of bubble, lines, the number of bubble
+ lines for response n and number of the first bubble line for response n,
+ and a comma separated list of numbers of bubble lines for sub-questions
+ (for optionresponse, matchresponse, and rankresponse items), for response n.
+
+
+=item *
+
+scantron_validate_missingbubbles() :
+
+ Validates all scanlines in the selected file to not have any
+ answers that don't have bubbles that have not been verified
+ to be bubble free.
+
+=item *
+
+scantron_process_students() :
+
+ Routine that does the actual grading of the bubble sheet information.
+
+ The parsed scanline hash is added to %env
+
+ Then foreach unskipped scanline it does an &Apache::lonnet::ssi()
+ foreach resource , with the form data of
+
+ 'submitted' =>'scantron'
+ 'grade_target' =>'grade',
+ 'grade_username'=> username of student
+ 'grade_domain' => domain of student
+ 'grade_courseid'=> of course
+ 'grade_symb' => symb of resource to grade
+
+ This triggers a grading pass. The problem grading code takes care
+ of converting the bubbled letter information (now in %env) into a
+ valid submission.
+
+=item *
+
+scantron_upload_scantron_data() :
+
+ Creates the screen for adding a new bubble sheet data file to a course.
+
+=item *
+
+scantron_upload_scantron_data_save() :
+
+ Adds a provided bubble information data file to the course if user
+ has the correct privileges to do so.
+
+=item *
+
+valid_file() :
+
+ Validates that the requested bubble data file exists in the course.
+
+=item *
+
+scantron_download_scantron_data() :
+
+ Shows a list of the three internal files (original, corrected,
+ skipped) for a specific bubble sheet data file that exists in the
+ course.
+
+=item *
+
+scantron_validate_ID() :
+
+ Validates all scanlines in the selected file to not have any
+ invalid or underspecified student IDs
+
+=back
+
+=cut
+
package Apache::grades;
use strict;
use Apache::style;
@@ -35,6 +212,7 @@ use Apache::loncommon;
use Apache::lonhtmlcommon;
use Apache::lonnavmaps;
use Apache::lonhomework;
+use Apache::lonpickcode;
use Apache::loncoursedata;
use Apache::lonmsg();
use Apache::Constants qw(:common);
@@ -46,12 +224,51 @@ use LONCAPA;
use POSIX qw(floor);
+
my %perm=();
-my %bubble_lines_per_response; # no. bubble lines for each response.
- # index is "symb.part_id"
+# These variables are used to recover from ssi errors
+
+my $ssi_retries = 5;
+my $ssi_error;
+my $ssi_error_resource;
+my $ssi_error_message;
+
+
+sub ssi_with_retries {
+ my ($resource, $retries, %form) = @_;
+ my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
+ if ($response->is_error) {
+ $ssi_error = 1;
+ $ssi_error_resource = $resource;
+ $ssi_error_message = $response->code . " " . $response->message;
+ }
+
+ return $content;
+
+}
+#
+# Prodcuces an ssi retry failure error message to the user:
+#
+
+sub ssi_print_error {
+ my ($r) = @_;
+ my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
+ $r->print('
+
+
+'.&mt('Unable to retrieve a resource from a server:').'
+'.&mt('Resource:').' '.$ssi_error_resource.'
+'.&mt('Error:').' '.$ssi_error_message.'
+
'.
+&mt('It is recommended that you try again later, as this error may mean the server was just temporarily unavailable, or is down for maintenance.').'
'.
+&mt('If the error persists, please contact the [_1] for assistance.',$helpurl).
+'
'; } elsif ($response eq 'match') { my %answer=&Apache::lonnet::str2hash($answer); @@ -273,10 +491,10 @@ sub cleanRecord { $bottomrow.=''. - '
'. - ' Answer '.$toprow.''.$grayFont.'Option ID '. + ''. + ' '.&mt('Answer').' '.$toprow.''.' '.$grayFont.&mt('Option ID').' '. $grayFont.$bottomrow.'
'; } elsif ($response eq 'radiobutton') { my %answer=&Apache::lonnet::str2hash($answer); @@ -286,18 +504,18 @@ sub cleanRecord { foreach my $foil (@$order) { if (exists($answer{$foil})) { if ($foil eq $correct) { - $toprow.=''. - '
'. - ' Answer '.$toprow.''.$grayFont.'Item ID '. + ''. + ' '.&mt('Answer').' '.$toprow.''. - ' '.$grayFont.&mt('Item ID').' '. $middlerow.''.$grayFont.'Option ID '. + ''.' '.$grayFont.&mt('Option ID').' '. $bottomrow.'
'; } elsif ($response eq 'essay') { if (! exists ($env{'form.'.$symb})) { @@ -349,7 +567,10 @@ sub cleanRecord { $result.=''; return $result; } - + } elsif ( $response =~ m/(?:numerical|formula)/) { + $answer = + &Apache::loncommon::format_previous_attempt_value('submission', + $answer); } return $answer; } @@ -393,8 +614,10 @@ COMMONJSFUNCTIONS #--- Dumps the class list with usernames,list of sections, #--- section, ids and fullnames for each user. sub getclasslist { - my ($getsec,$filterlist) = @_; + my ($getsec,$filterlist,$getgroup) = @_; my @getsec; + my @getgroup; + my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status')); if (!ref($getsec)) { if ($getsec ne '' && $getsec ne 'all') { @getsec=($getsec); @@ -403,10 +626,19 @@ sub getclasslist { @getsec=@{$getsec}; } if (grep(/^all$/,@getsec)) { undef(@getsec); } + if (!ref($getgroup)) { + if ($getgroup ne '' && $getgroup ne 'all') { + @getgroup=($getgroup); + } + } else { + @getgroup=@{$getgroup}; + } + if (grep(/^all$/,@getgroup)) { undef(@getgroup); } - my $classlist=&Apache::loncoursedata::get_classlist(); + my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist(); # Bail out if we were unable to get the classlist return if (! defined($classlist)); + &Apache::loncoursedata::get_group_memberships($classlist,$keylist); # my %sections; my %fullnames; @@ -423,18 +655,40 @@ sub getclasslist { $classlist->{$student}->[&Apache::loncoursedata::CL_FULLNAME()]; my $status = $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS()]; + my $group = + $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()]; # filter students according to status selected - if ($filterlist && $env{'form.Status'} ne 'Any') { - if ($env{'form.Status'} ne $status) { - delete ($classlist->{$student}); + if ($filterlist && (!($stu_status =~ /Any/))) { + if (!($stu_status =~ $status)) { + delete($classlist->{$student}); next; } } + # filter students according to groups selected + my @stu_groups = split(/,/,$group); + if (@getgroup) { + my $exclude = 1; + foreach my $grp (@getgroup) { + foreach my $stu_group (@stu_groups) { + if ($stu_group eq $grp) { + $exclude = 0; + } + } + if (($grp eq 'none') && !$group) { + $exclude = 0; + } + } + if ($exclude) { + delete($classlist->{$student}); + } + } $section = ($section ne '' ? $section : 'none'); if (&canview($section)) { if (!@getsec || grep(/^\Q$section\E$/,@getsec)) { $sections{$section}++; - $fullnames{$student}=$fullname; + if ($classlist->{$student}) { + $fullnames{$student}=$fullname; + } } else { delete($classlist->{$student}); } @@ -507,6 +761,7 @@ sub student_gradeStatus { # Shows a student's view of problem and submission sub jscriptNform { my ($symb) = @_; + my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status')); my $jscript=' - -UPLOAD +'); - $r->print(<'. - '
'. - ' Answer '.$toprow.''.$grayFont.'Option ID '. + ''. + ' '.&mt('Answer').' '.$toprow.''.' '.$grayFont.&mt('Option ID').' '. $grayFont.$bottomrow.'