File:
[LON-CAPA] /
loncom /
interface /
slotrequest.pm
Revision
1.43:
download - view:
text,
annotated -
select for diffs
Fri Feb 3 23:42:54 2006 UTC (19 years, 2 months ago) by
albertel
Branches:
MAIN
CVS tags:
HEAD
- unique period was not being checked properl, students could make multiple
reservations
- better display for what slots are currently allowed and whether thye conflict
with a previously reserved slot
- was checking the startime of a slot improperly when student tried to free a
slot
- when getting the next reservation pick the one that occurs next
# The LearningOnline Network with CAPA
# Handler for requesting to have slots added to a students record
#
# $Id: slotrequest.pm,v 1.43 2006/02/03 23:42:54 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/
#
###
package Apache::slotrequest;
use strict;
use Apache::Constants qw(:common :http :methods);
use Apache::loncommon();
use Apache::lonlocal;
use Apache::lonnet;
use Date::Manip;
sub fail {
my ($r,$code)=@_;
if ($code eq 'not_valid') {
$r->print('<p>'.&mt('Unable to understand what resource you wanted to sign up for.').'</p>');
} elsif ($code eq 'not_allowed') {
$r->print('<p>'.&mt('Not allowed to sign up or change reservations at this time.').'</p>');
} else {
$r->print('<p>'.&mt('Failed.').'</p>');
}
&return_link($r);
&end_page($r);
}
sub start_page {
my ($r,$title)=@_;
my $html=&Apache::lonxml::xmlbegin();
$r->print($html.'<head><title>'.&mt($title).'</title></head>');
$r->print(&Apache::loncommon::bodytag($title));
}
sub end_page {
my ($r)=@_;
$r->print(&Apache::loncommon::endbodytag().'</html>');
}
=pod
slot_reservations db
- keys are
- slotname\0id -> value is an hashref of
name -> user@domain of holder
timestamp -> timestamp of reservation
symb -> symb of resource that it is reserved for
=cut
sub get_course {
(undef,my $courseid)=&Apache::lonxml::whichuser();
my $cdom=$env{'course.'.$courseid.'.domain'};
my $cnum=$env{'course.'.$courseid.'.num'};
return ($cnum,$cdom);
}
sub get_reservation_ids {
my ($slot_name)=@_;
my ($cnum,$cdom)=&get_course();
my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
"^$slot_name\0");
if (&network_error(%consumed)) {
return 'error: Unable to determine current status';
}
my ($tmp)=%consumed;
if ($tmp=~/^error: 2 / ) {
return 0;
}
return keys(%consumed);
}
sub space_available {
my ($slot_name,$slot)=@_;
my $max=$slot->{'maxspace'};
if (!defined($max)) { return 1; }
my $consumed=scalar(&get_reservation_ids($slot_name));
if ($consumed < $max) {
return 1
}
return 0;
}
sub check_for_reservation {
my ($symb,$mode)=@_;
my $student = &Apache::lonnet::EXT("resource.0.availablestudent", $symb,
$env{'user.domain'}, $env{'user.name'});
my $course = &Apache::lonnet::EXT("resource.0.available", $symb,
$env{'user.domain'}, $env{'user.name'});
my @slots = (split(/:/,$student), split(/:/, $course));
&Apache::lonxml::debug(" slot list is ".join(':',@slots));
my ($cnum,$cdom)=&get_course();
my %slots=&Apache::lonnet::get('slots', [@slots], $cdom, $cnum);
if (&network_error($student) || &network_error($course) ||
&network_error(%slots)) {
return 'error: Unable to determine current status';
}
my @got;
foreach my $slot_name (sort {
if (ref($slots{$a}) && ref($slots{$b})) {
return $slots{$a}{'starttime'} <=> $slots{$b}{'starttime'}
}
if (ref($slots{$a})) { return -1;}
if (ref($slots{$b})) { return 1;}
return 0;
} @slots) {
next if (!defined($slots{$slot_name}) ||
!ref($slots{$slot_name}));
&Apache::lonxml::debug(time." $slot_name ".
$slots{$slot_name}->{'starttime'}." -- ".
$slots{$slot_name}->{'startreserve'});
if ($slots{$slot_name}->{'endtime'} > time &&
$slots{$slot_name}->{'startreserve'} < time) {
# between start of reservation times and end of slot
if ($mode eq 'allslots') {
push(@got,$slot_name);
} else {
return($slot_name, $slots{$slot_name});
}
}
}
if ($mode eq 'allslots' && @got) {
return @got;
}
return (undef,undef);
}
sub check_for_conflict {
my ($symb,$new_slot_name,$new_slot,$slots)=@_;
if (!defined($new_slot->{'uniqueperiod'})) { return undef; }
my $student = &Apache::lonnet::EXT("resource.0.availablestudent", $symb,
$env{'user.domain'}, $env{'user.name'});
my $course = &Apache::lonnet::EXT("resource.0.available", $symb,
$env{'user.domain'}, $env{'user.name'});
my @slots = (split(/:/,$student), split(/:/, $course));
my ($cnum,$cdom)=&get_course();
if (!ref($slots)) {
my %slots=&Apache::lonnet::get('slots', [@slots], $cdom, $cnum);
$slots = \%slots;
}
if (&network_error($student) || &network_error($course) ||
&network_error(%$slots)) {
return 'error: Unable to determine current status';
}
my ($new_uniq_start,$new_uniq_end) = @{$new_slot->{'uniqueperiod'}};
foreach my $slot_name (@slots) {
next if (!defined($slots->{$slot_name}) ||
!ref($slots->{$slot_name}));
next if (!defined($slots->{$slot_name}{'uniqueperiod'}) ||
!ref($slots->{$slot_name}{'uniqueperiod'}));
my ($start,$end)=@{$slots->{$slot_name}{'uniqueperiod'}};
if (!
($start < $new_uniq_start && $end < $new_uniq_start) ||
($start > $new_uniq_end && $end > $new_uniq_end )) {
return $slot_name;
}
}
return undef;
}
sub network_error {
my ($result) = @_;
if ($result =~ /^(con_lost|no_such_host|error: [^2])/) {
return 1;
}
return 0;
}
sub make_reservation {
my ($slot_name,$slot,$symb)=@_;
my ($cnum,$cdom)=&get_course();
my $value=&Apache::lonnet::EXT("resource.0.availablestudent",$symb,
$env{'user.domain'},$env{'user.name'});
&Apache::lonxml::debug("value is $value<br />");
if (&network_error($value)) {
return 'error: Unable to determine current status';
}
foreach my $other_slot (split(/:/, $value)) {
if ($other_slot eq $slot_name) {
my %consumed=&Apache::lonnet::dump('slot_reservations', $cdom,
$cnum, "^$slot_name\0");
if (&network_error($value)) {
return 'error: Unable to determine current status';
}
my $me=$env{'user.name'}.'@'.$env{'user.domain'};
foreach my $key (keys(%consumed)) {
if ($consumed{$key}->{'name'} eq $me) {
my $num=(split('\0',$key))[1];
return -$num;
}
}
}
}
my $max=$slot->{'maxspace'};
if (!defined($max)) { $max=99999; }
my (@ids)=&get_reservation_ids($slot_name);
if (&network_error(@ids)) {
return 'error: Unable to determine current status';
}
my $last=0;
foreach my $id (@ids) {
my $num=(split('\0',$id))[1];
if ($num > $last) { $last=$num; }
}
my $wanted=$last+1;
&Apache::lonxml::debug("wanted $wanted<br />");
if (scalar(@ids) >= $max) {
# full up
return undef;
}
my %reservation=('name' => $env{'user.name'}.'@'.$env{'user.domain'},
'timestamp' => time,
'symb' => $symb);
my $success=&Apache::lonnet::newput('slot_reservations',
{"$slot_name\0$wanted" =>
\%reservation},
$cdom, $cnum);
if ($success eq 'ok') {
my $new_value=$slot_name;
if ($value) {
$new_value=$value.':'.$new_value;
}
my $result=&Apache::lonparmset::storeparm_by_symb($symb,
'0_availablestudent',
1, $new_value, 'string',
$env{'user.name'},
$env{'user.domain'});
&Apache::lonxml::debug("hrrm $result");
return $wanted;
}
# someone else got it
return undef;
}
sub remove_registration {
my ($r) = @_;
my $name = &Apache::loncommon::plainname($env{'form.uname'},
$env{'form.udom'});
my $title = &Apache::lonnet::gettitle($env{'form.symb'});
my $hidden_input;
foreach my $parm ('uname','udom','slotname','entry','symb') {
$hidden_input .=
'<input type="hidden" name="'.$parm.'" value="'
.&HTML::Entities::encode($env{'form.'.$parm},'"<>&\'').'" />'."\n";
}
$r->print(<<"END_CONFIRM");
<p> Remove $name from slot $env{'form.slotname'} for $title</p>
<form action="/adm/slotrequest" method="POST">
<input type="hidden" name="command" value="release" />
$hidden_input
<input type="submit" name="Yes" value="yes" />
</form>
<form action="/adm/slotrequest" method="POST">
<input type="hidden" name="command" value="showslots" />
<input type="submit" name="No" value="no" />
</form>
END_CONFIRM
}
sub release_slot {
my ($r,$symb,$slot_name,$inhibit_return_link,$mgr)=@_;
if ($slot_name eq '') { $slot_name=$env{'form.slotname'}; }
my ($cnum,$cdom)=&get_course();
my ($uname,$udom) = ($env{'user.name'}, $env{'user.domain'});
if ($mgr eq 'F'
&& defined($env{'form.uname'}) && defined($env{'form.udom'})) {
($uname,$udom) = ($env{'form.uname'}, $env{'form.udom'});
}
if ($mgr eq 'F'
&& defined($env{'form.symb'})) {
$symb = $env{'form.symb'};
}
my %slot=&Apache::lonnet::get_slot($slot_name);
my $description=&get_description($env{'form.slotname'},\%slot);
if ($mgr ne 'F') {
if ($slot{'starttime'} < time) {
$r->print("<p>Not allowed to release Reservation: $description, as it has already ended. </p>");
&return_link($r);
return 0;
}
}
# get parameter string, check for existance, rebuild string with the slot
my @slots = split(/:/,&Apache::lonnet::EXT("resource.0.availablestudent",
$symb,$udom,$uname));
my @new_slots;
foreach my $exist_slot (@slots) {
if ($exist_slot eq $slot_name) { next; }
push(@new_slots,$exist_slot);
}
my $new_param = join(':',@new_slots);
# get slot reservations, check if user has one, if so remove reservation
my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
"^$slot_name\0");
foreach my $entry (keys(%consumed)) {
if ( $consumed{$entry}->{'name'} eq ($uname.'@'.$udom) ) {
&Apache::lonnet::del('slot_reservations',[$entry],
$cdom,$cnum);
}
}
# store new parameter string
my $result=&Apache::lonparmset::storeparm_by_symb($symb,
'0_availablestudent',
1, $new_param, 'string',
$uname,$udom);
my $description=&get_description($env{'form.slotname'},\%slot);
$r->print("<p>Released Reservation: $description</p>");
if ($mgr eq 'F') {
$r->print('<p><a href="/adm/slotrequest?command=showslots">'.
&mt('Return to slot list').'</a></p>');
}
if (!$inhibit_return_link) { &return_link($r); }
return 1;
}
sub delete_slot {
my ($r)=@_;
my $slot_name = $env{'form.slotname'};
my %slot=&Apache::lonnet::get_slot($slot_name);
my ($cnum,$cdom)=&get_course();
my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
"^$slot_name\0");
my ($tmp) = %consumed;
if ($tmp =~ /error: 2/) { undef(%consumed); }
if (%slot && !%consumed) {
$slot{'type'} = 'deleted';
my $ret = &Apache::lonnet::cput('slots', {$slot_name => \%slot},
$cdom, $cnum);
if ($ret eq 'ok') {
$r->print("<p>Slot <tt>$slot_name</tt> marked as deleted.</p>");
} else {
$r->print("<p> An error ($ret) occurse when attempting to delete Slot <tt>$slot_name</tt>.</p>");
}
} else {
if (%consumed) {
$r->print("<p>Slot <tt>$slot_name</tt> has active reservations.</p>");
} else {
$r->print("<p>Slot <tt>$slot_name</tt> does not exist.</p>");
}
}
$r->print('<p><a href="/adm/slotrequest?command=showslots">'.
&mt('Return to slot list').'</a></p>');
&return_link($r);
}
sub return_link {
my ($r) = @_;
$r->print('<p><a href="/adm/flip?postdata=return:">'.
&mt('Return to last resource').'</a></p>');
}
sub get_slot {
my ($r,$symb)=@_;
my %slot=&Apache::lonnet::get_slot($env{'form.slotname'});
my $slot_name=&check_for_conflict($symb,$env{'form.slotname'},\%slot);
if ($slot_name =~ /^error: (.*)/) {
$r->print("<p>An error occured while attempting to make a reservation. ($1)</p>");
&return_link($r);
return;
}
if ($slot_name) {
my %slot=&Apache::lonnet::get_slot($slot_name);
my $description1=&get_description($slot_name,\%slot);
%slot=&Apache::lonnet::get_slot($env{'form.slotname'});
my $description2=&get_description($env{'form.slotname'},\%slot);
$r->print("<p>Already have a reservation: $description1</p>");
if ($slot_name ne $env{'form.slotname'}) {
$r->print(<<STUFF);
<form method="POST" action="/adm/slotrequest">
<input type="hidden" name="symb" value="$env{'form.symb'}" />
<input type="hidden" name="slotname" value="$env{'form.slotname'}" />
<input type="hidden" name="releaseslot" value="$slot_name" />
<input type="hidden" name="command" value="change" />
STUFF
$r->print("<p>You can either ");
$r->print(<<STUFF);
<input type="submit" name="change" value="Change" />
STUFF
$r->print(' your reservation from <b>'.$description1.'</b> to <b>'.
$description2.
'</b> <br />or </p>');
&return_link($r);
$r->print(<<STUFF);
</form>
STUFF
} else {
&return_link($r);
}
return;
}
my %slot=&Apache::lonnet::get_slot($env{'form.slotname'});
my $reserved=&make_reservation($env{'form.slotname'},
\%slot,$symb);
my $description=&get_description($env{'form.slotname'},\%slot);
if (defined($reserved)) {
if ($slot_name =~ /^error: (.*)/) {
$r->print("<p>An error occured while attempting to make a reservation. ($1)</p>");
} elsif ($reserved > -1) {
$r->print("<p>Success: $description</p>");
} elsif ($reserved < 0) {
$r->print("<p>Already reserved: $description</p>");
}
&return_link($r);
return;
}
my %lt=('request'=>"Availibility list",
'try' =>'Try again');
%lt=&Apache::lonlocal::texthash(%lt);
$r->print(<<STUFF);
<p> <font color="red">Failed</font> to reserve a spot for $description. </p>
<p>
<form method="POST" action="/adm/slotrequest">
<input type="submit" name="Try Again" value="$lt{'try'}" />
<input type="hidden" name="symb" value="$env{'form.symb'}" />
<input type="hidden" name="slotname" value="$env{'form.slotname'}" />
<input type="hidden" name="command" value="get" />
</form>
?
</p>
<p>
or
<form method="POST" action="/adm/slotrequest">
<input type="hidden" name="symb" value="$env{'form.symb'}" />
<input type="submit" name="requestattempt" value="$lt{'request'}" />
</form>
</p>
or
STUFF
&return_link($r);
return;
}
sub allowed_slot {
my ($slot_name,$slot,$symb)=@_;
#already started
if ($slot->{'starttime'} < time) {
# all open slot to be schedulable
#return 0;
}
&Apache::lonxml::debug("$slot_name starttime good");
#already ended
if ($slot->{'endtime'} < time) {
return 0;
}
&Apache::lonxml::debug("$slot_name endtime good");
# not allowed to pick this one
if (defined($slot->{'type'})
&& $slot->{'type'} ne 'schedulable_student') {
return 0;
}
&Apache::lonxml::debug("$slot_name type good");
# not allowed for this resource
if (defined($slot->{'symb'})
&& $slot->{'symb'} ne $symb) {
return 0;
}
&Apache::lonxml::debug("$slot_name symb good");
return 1;
}
sub get_description {
my ($slot_name,$slot)=@_;
my $description=$slot->{'description'};
if (!defined($description)) {
$description=&mt('[_1] From [_2] to [_3]',$slot_name,
&Apache::lonlocal::locallocaltime($slot->{'starttime'}),
&Apache::lonlocal::locallocaltime($slot->{'endtime'}));
}
return $description;
}
sub show_choices {
my ($r,$symb)=@_;
my ($cnum,$cdom)=&get_course();
my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
my $available;
$r->print('<table border="1">');
&Apache::lonxml::debug("Checking Slots");
my @got_slots=&check_for_reservation($symb,'allslots');
foreach my $slot (sort
{ return $slots{$a}->{'starttime'} <=> $slots{$b}->{'starttime'} }
(keys(%slots))) {
&Apache::lonxml::debug("Checking Slot $slot");
next if (!&allowed_slot($slot,$slots{$slot}));
$available++;
my $description=&get_description($slot,$slots{$slot});
my $form=&mt('Unavailable');
if ((grep(/^\Q$slot\E$/,@got_slots)) ||
&space_available($slot,$slots{$slot},$symb)) {
my $text=&mt('Select');
my $command='get';
if (grep(/^\Q$slot\E$/,@got_slots)) {
$text=&mt('Free Reservation');
$command='release';
} else {
my $conflict = &check_for_conflict($symb,$slot,$slots{$slot},
\%slots);
if ($conflict) {
$text=&mt('Change Reservation');
$command='get';
}
}
my $escsymb=&Apache::lonnet::escape($symb);
$form=<<STUFF;
<form method="POST" action="/adm/slotrequest">
<input type="submit" name="Select" value="$text" />
<input type="hidden" name="symb" value="$escsymb" />
<input type="hidden" name="slotname" value="$slot" />
<input type="hidden" name="command" value="$command" />
</form>
STUFF
}
$r->print(<<STUFF);
<tr>
<td>$form</td>
<td>$description</td>
</tr>
STUFF
}
if (!$available) {
$r->print('<tr><td>No available times. <a href="/adm/flip?postdata=return:">'.
&mt('Return to last resource').'</a></td></tr>');
}
$r->print('</table>');
}
sub to_show {
my ($slot,$when,$deleted) = @_;
my $time=time;
my $week=60*60*24*7;
if ($deleted eq 'hide' && $slot->{'type'} eq 'deleted') {
return 0;
}
if ($when eq 'any') {
return 1;
} elsif ($when eq 'now') {
if ($time > $slot->{'starttime'} &&
$time < $slot->{'endtime'}) {
return 1;
}
return 0;
} elsif ($when eq 'nextweek') {
if ( ($time < $slot->{'starttime'} &&
($time+$week) > $slot->{'starttime'})
||
($time < $slot->{'endtime'} &&
($time+$week) > $slot->{'endtime'}) ) {
return 1;
}
return 0;
} elsif ($when eq 'lastweek') {
if ( ($time > $slot->{'starttime'} &&
($time-$week) < $slot->{'starttime'})
||
($time > $slot->{'endtime'} &&
($time-$week) < $slot->{'endtime'}) ) {
return 1;
}
return 0;
} elsif ($when eq 'willopen') {
if ($time < $slot->{'starttime'}) {
return 1;
}
return 0;
} elsif ($when eq 'wereopen') {
if ($time > $slot->{'endtime'}) {
return 1;
}
return 0;
}
return 1;
}
sub remove_link {
my ($slotname,$entry,$uname,$udom,$symb) = @_;
$slotname = &Apache::lonnet::escape($slotname);
$entry = &Apache::lonnet::escape($entry);
$uname = &Apache::lonnet::escape($uname);
$udom = &Apache::lonnet::escape($udom);
$symb = &Apache::lonnet::escape($symb);
my $remove= &mt('Remove');
return <<"END_LINK";
<a href="/adm/slotrequest?command=remove_registration&slotname=$slotname&entry=$entry&uname=$uname&udom=$udom&symb=$symb"
>($remove)</a>
END_LINK
}
sub show_table {
my ($r,$mgr)=@_;
my ($cnum,$cdom)=&get_course();
my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
if ( (keys(%slots))[0] =~ /^error: 2 /) {
undef(%slots);
}
my $available;
if ($mgr eq 'F') {
$r->print('<div>');
$r->print('<form method="POST" action="/adm/slotrequest">
<input type="hidden" name="command" value="uploadstart" />
<input type="submit" name="start" value="'.&mt('Upload Slot List').'" />
</form>');
$r->print('<form method="POST" action="/adm/helper/newslot.helper">
<input type="submit" name="newslot" value="'.&mt('Create a New Slot').'" />
</form>');
$r->print('</div>');
}
my %Saveable_Parameters = ('show' => 'array',
'when' => 'scalar',
'order' => 'scalar',
'deleted' => 'scalar',
);
&Apache::loncommon::store_course_settings('slotrequest',\%Saveable_Parameters);
&Apache::loncommon::restore_course_settings('slotrequest',\%Saveable_Parameters);
my %show_fields=&Apache::lonlocal::texthash(
'name' => 'Slot Name',
'description' => 'Description',
'type' => 'Type',
'starttime' => 'Start time',
'endtime' => 'End Time',
'startreserve' => 'Time students can start reserving',
'secret' => 'Secret Word',
'maxspace' => 'Maximum # of students',
'ip' => 'IP or DNS restrictions',
'symb' => 'Resource slot is restricted to.',
'uniqueperiod' => 'Period of time slot is unique',
'proctor' => 'List of proctors');
my @show_order=('name','description','type','starttime','endtime',
'startreserve','secret','maxspace','ip','symb',
'uniqueperiod','proctor');
my @show =
(exists($env{'form.show'})) ? &Apache::loncommon::get_env_multiple('form.show')
: keys(%show_fields);
my %show = map { $_ => 1 } (@show);
my %when_fields=&Apache::lonlocal::texthash(
'now' => 'Open now',
'nextweek' => 'Open within the next week',
'lastweek' => 'Were open last week',
'willopen' => 'Will open later',
'wereopen' => 'Were open',
'any' => 'Anytime',
);
my @when_order=('any','now','nextweek','lastweek','willopen','wereopen');
$when_fields{'select_form_order'} = \@when_order;
my $when = (exists($env{'form.when'})) ? $env{'form.when'}
: 'now';
my $hide_radio =
&Apache::lonhtmlcommon::radio('deleted',$env{'form.deleted'},'hide');
my $show_radio =
&Apache::lonhtmlcommon::radio('deleted',$env{'form.deleted'},'show');
$r->print('<form method="POST" action="/adm/slotrequest">
<input type="hidden" name="command" value="showslots" />');
$r->print('<div>');
$r->print('<table class="inline">
<tr><th>'.&mt('Show').'</th>
<th>'.&mt('Open').'</th>
<th>'.&mt('Options').'</th>
</tr>
<tr><td>'.&Apache::loncommon::multiple_select_form('show',\@show,6,\%show_fields,\@show_order).
'</td>
<td>'.&Apache::loncommon::select_form($when,'when',%when_fields).
'</td>
<td>
<table>
<tr>
<td rowspan="2">Deleted slots:</td>
<td><label>'.$show_radio.'Show</label></td>
</tr>
<tr>
<td><label>'.$hide_radio.'Hide</label></td>
</tr>
</table>
</td>
</tr>
</table>');
$r->print('</div>');
$r->print('<p><input type="submit" name="start" value="'.&mt('Update Display').'" /></p>');
my $linkstart='<a href="/adm/slotrequest?command=showslots&order=';
$r->print('<table class="thinborder">
<tr>
<th></th>');
foreach my $which (@show_order) {
if ($which ne 'proctor' && exists($show{$which})) {
$r->print('<th>'.$linkstart.$which.'">'.$show_fields{$which}.'</a></th>');
}
}
$r->print('<th>Scheduled Students</th></tr>');
my %name_cache;
my $slotsort = sub {
if ($env{'form.order'}=~/^(type|description|endtime|startreserve|maxspace|ip|symb)$/) {
if (lc($slots{$a}->{$env{'form.order'}})
ne lc($slots{$b}->{$env{'form.order'}})) {
return (lc($slots{$a}->{$env{'form.order'}})
cmp lc($slots{$b}->{$env{'form.order'}}));
}
} elsif ($env{'form.order'} eq 'name') {
if (lc($a) cmp lc($b)) {
return lc($a) cmp lc($b);
}
} elsif ($env{'form.order'} eq 'uniqueperiod') {
if ($slots{$a}->{'uniqueperiod'}[0]
ne $slots{$b}->{'uniqueperiod'}[0]) {
return ($slots{$a}->{'uniqueperiod'}[0]
cmp $slots{$b}->{'uniqueperiod'}[0]);
}
if ($slots{$a}->{'uniqueperiod'}[1]
ne $slots{$b}->{'uniqueperiod'}[1]) {
return ($slots{$a}->{'uniqueperiod'}[1]
cmp $slots{$b}->{'uniqueperiod'}[1]);
}
}
return $slots{$a}->{'starttime'} <=> $slots{$b}->{'starttime'};
};
foreach my $slot (sort $slotsort (keys(%slots))) {
if (!&to_show($slots{$slot},$when,$env{'form.deleted'})) { next; }
if (defined($slots{$slot}->{'type'})
&& $slots{$slot}->{'type'} ne 'schedulable_student') {
#next;
}
my $description=&get_description($slot,$slots{$slot});
my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
"^$slot\0");
my $ids;
my ($tmp)=%consumed;
if ($tmp !~ /^error: /) {
foreach my $entry (sort(keys(%consumed))) {
my (undef,$id)=split("\0",$entry);
my ($uname,$udom) = split('@',$consumed{$entry}{'name'});
my $name = &Apache::loncommon::plainname($uname,$udom);
$ids.= '<nobr>'.$name.&remove_link($slot,$entry,$uname,$udom,
$consumed{$entry}{'symb'})
.'</nobr><br />';
}
}
my $start=($slots{$slot}->{'starttime'}?
&Apache::lonlocal::locallocaltime($slots{$slot}->{'starttime'}):'');
my $end=($slots{$slot}->{'endtime'}?
&Apache::lonlocal::locallocaltime($slots{$slot}->{'endtime'}):'');
my $start_reserve=($slots{$slot}->{'startreserve'}?
&Apache::lonlocal::locallocaltime($slots{$slot}->{'startreserve'}):'');
my $unique;
if (ref($slots{$slot}{'uniqueperiod'})) {
$unique=localtime($slots{$slot}{'uniqueperiod'}[0]).','.
localtime($slots{$slot}{'uniqueperiod'}[1]);
}
my $title;
if (exists($slots{$slot}{'symb'})) {
my (undef,undef,$res)=
&Apache::lonnet::decode_symb($slots{$slot}{'symb'});
$res = &Apache::lonnet::clutter($res);
$title = &Apache::lonnet::gettitle($slots{$slot}{'symb'});
$title='<a href="'.$res.'?symb='.$slots{$slot}{'symb'}.'">'.$title.'</a>';
}
my @proctors;
my $rowspan=1;
my $colspan=1;
if (exists($show{'proctor'})) {
$rowspan=2;
@proctors= map {
my ($uname,$udom)=split(/@/,$_);
my $fullname=$name_cache{$_};
if (!defined($fullname)) {
&Apache::lonnet::logthis("Gettign $uname $udom");
$fullname = &Apache::loncommon::plainname($uname,$udom);
$fullname =~s/\s/ /g;
$name_cache{$_} = $fullname;
}
&Apache::loncommon::aboutmewrapper($fullname,$uname,$udom);
} (sort(split(/\s*,\s*/,$slots{$slot}->{'proctor'})));
}
my $proctors=join(', ',@proctors);
my $edit=(<<"EDITLINK");
<a href="/adm/helper/newslot.helper?name=$slot">Edit</a>
EDITLINK
my $delete=(<<"DELETELINK");
<a href="/adm/slotrequest?command=delete&slotname=$slot">Delete</a>
DELETELINK
if ($ids ne '') { undef($delete); }
$r->print("<tr>\n<td rowspan=\"$rowspan\">$edit $delete</td>\n");
if (exists($show{'name'})) {
$colspan++;$r->print("<td>$slot</td>");
}
if (exists($show{'description'})) {
$colspan++;$r->print("<td>$description</td>\n");
}
if (exists($show{'type'})) {
$colspan++;$r->print("<td>$slots{$slot}->{'type'}</td>\n");
}
if (exists($show{'starttime'})) {
$colspan++;$r->print("<td>$start</td>\n");
}
if (exists($show{'endtime'})) {
$colspan++;$r->print("<td>$end</td>\n");
}
if (exists($show{'startreserve'})) {
$colspan++;$r->print("<td>$start_reserve</td>\n");
}
if (exists($show{'secret'})) {
$colspan++;$r->print("<td>$slots{$slot}{'secret'}</td>\n");
}
if (exists($show{'maxspace'})) {
$colspan++;$r->print("<td>$slots{$slot}{'maxspace'}</td>\n");
}
if (exists($show{'ip'})) {
$colspan++;$r->print("<td>$slots{$slot}{'ip'}</td>\n");
}
if (exists($show{'symb'})) {
$colspan++;$r->print("<td>$title</td>\n");
}
if (exists($show{'uniqueperiod'})) {
$colspan++;$r->print("<td>$unique</td>\n");
}
$colspan++;$r->print("<td>$ids</td>\n</tr>\n");
if (exists($show{'proctor'})) {
$r->print(<<STUFF);
<tr>
<td colspan="$colspan">$proctors</td>
</tr>
STUFF
}
}
$r->print('</table>');
}
sub upload_start {
my ($r)=@_;
$r->print(&Apache::grades::checkforfile_js());
my $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
$result.=' <b>'.
&mt('Specify a file containing the slot definitions.').
'</b></td></tr>'."\n";
$result.='<tr bgcolor=#ffffe6><td>'."\n";
my $upfile_select=&Apache::loncommon::upfile_select_html();
my $ignore=&mt('Ignore First Line');
$result.=<<ENDUPFORM;
<form method="post" enctype="multipart/form-data" action="/adm/slotrequest" name="slotupload">
<input type="hidden" name="command" value="csvuploadmap" />
$upfile_select
<br /><input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Data" />
<label><input type="checkbox" name="noFirstLine" />$ignore</label>
</form>
ENDUPFORM
$result.='</td></tr></table>'."\n";
$result.='</td></tr></table>'."\n";
$r->print($result);
}
sub csvuploadmap_header {
my ($r,$datatoken,$distotal)= @_;
my $javascript;
if ($env{'form.upfile_associate'} eq 'reverse') {
$javascript=&csvupload_javascript_reverse_associate();
} else {
$javascript=&csvupload_javascript_forward_associate();
}
my $checked=(($env{'form.noFirstLine'})?' checked="checked"':'');
my $ignore=&mt('Ignore First Line');
$r->print(<<ENDPICK);
<form method="post" enctype="multipart/form-data" action="/adm/slotrequest" name="slotupload">
<h3>Identify fields</h3>
Total number of records found in file: $distotal <hr />
Enter as many fields as you can. The system will inform you and bring you back
to this page if the data selected is insufficient to create the slots.<hr />
<input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
<label><input type="checkbox" name="noFirstLine" $checked />$ignore</label>
<input type="hidden" name="associate" value="" />
<input type="hidden" name="datatoken" value="$datatoken" />
<input type="hidden" name="fileupload" value="$env{'form.fileupload'}" />
<input type="hidden" name="upfiletype" value="$env{'form.upfiletype'}" />
<input type="hidden" name="upfile_associate"
value="$env{'form.upfile_associate'}" />
<input type="hidden" name="command" value="csvuploadassign" />
<hr />
<script type="text/javascript" language="Javascript">
$javascript
</script>
ENDPICK
return '';
}
sub csvuploadmap_footer {
my ($request,$i,$keyfields) =@_;
$request->print(<<ENDPICK);
</table>
<input type="hidden" name="nfields" value="$i" />
<input type="hidden" name="keyfields" value="$keyfields" />
<input type="button" onClick="javascript:verify(this.form)" value="Create Slots" /><br />
</form>
ENDPICK
}
sub csvupload_javascript_reverse_associate {
my $error1=&mt('You need to specify the name, starttime, endtime and a type');
return(<<ENDPICK);
function verify(vf) {
var foundstart=0;
var foundend=0;
var foundname=0;
var foundtype=0;
for (i=0;i<=vf.nfields.value;i++) {
tw=eval('vf.f'+i+'.selectedIndex');
if (i==0 && tw!=0) { foundname=1; }
if (i==1 && tw!=0) { foundtype=1; }
if (i==2 && tw!=0) { foundstat=1; }
if (i==3 && tw!=0) { foundend=1; }
}
if (foundstart==0 && foundend==0 && foundtype==0 && foundname==0) {
alert('$error1');
return;
}
vf.submit();
}
function flip(vf,tf) {
}
ENDPICK
}
sub csvupload_javascript_forward_associate {
my $error1=&mt('You need to specify the name, starttime, endtime and a type');
return(<<ENDPICK);
function verify(vf) {
var foundstart=0;
var foundend=0;
var foundname=0;
var foundtype=0;
for (i=0;i<=vf.nfields.value;i++) {
tw=eval('vf.f'+i+'.selectedIndex');
if (tw==1) { foundname=1; }
if (tw==2) { foundtype=1; }
if (tw==3) { foundstat=1; }
if (tw==4) { foundend=1; }
}
if (foundstart==0 && foundend==0 && foundtype==0 && foundname==0) {
alert('$error1');
return;
}
vf.submit();
}
function flip(vf,tf) {
}
ENDPICK
}
sub csv_upload_map {
my ($r)= @_;
my $datatoken;
if (!$env{'form.datatoken'}) {
$datatoken=&Apache::loncommon::upfile_store($r);
} else {
$datatoken=$env{'form.datatoken'};
&Apache::loncommon::load_tmp_file($r);
}
my @records=&Apache::loncommon::upfile_record_sep();
if ($env{'form.noFirstLine'}) { shift(@records); }
&csvuploadmap_header($r,$datatoken,$#records+1);
my ($i,$keyfields);
if (@records) {
my @fields=&csvupload_fields();
if ($env{'form.upfile_associate'} eq 'reverse') {
&Apache::loncommon::csv_print_samples($r,\@records);
$i=&Apache::loncommon::csv_print_select_table($r,\@records,
\@fields);
foreach (@fields) { $keyfields.=$_->[0].','; }
chop($keyfields);
} else {
unshift(@fields,['none','']);
$i=&Apache::loncommon::csv_samples_select_table($r,\@records,
\@fields);
my %sone=&Apache::loncommon::record_sep($records[0]);
$keyfields=join(',',sort(keys(%sone)));
}
}
&csvuploadmap_footer($r,$i,$keyfields);
return '';
}
sub csvupload_fields {
return (['name','Slot name'],
['type','Type of slot'],
['starttime','Start Time of slot'],
['endtime','End Time of slot'],
['startreserve','Reservation Start Time'],
['ip','IP or DNS restriction'],
['proctor','List of proctor ids'],
['description','Slot Description'],
['maxspace','Maximum number of reservations'],
['symb','Resource Restriction'],
['uniqueperiod','Date range of slot exclusion'],
['secret','Secret word proctor uses to validate']);
}
sub csv_upload_assign {
my ($r,$mgr)= @_;
&Apache::loncommon::load_tmp_file($r);
my @slotdata = &Apache::loncommon::upfile_record_sep();
if ($env{'form.noFirstLine'}) { shift(@slotdata); }
my %fields=&Apache::grades::get_fields();
$r->print('<h3>Creating Slots</h3>');
my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
my $countdone=0;
my @errors;
foreach my $slot (@slotdata) {
my %slot;
my %entries=&Apache::loncommon::record_sep($slot);
my $domain;
my $name=$entries{$fields{'name'}};
if ($name=~/^\s*$/) {
push(@errors,"Did not create slot with no name");
next;
}
if ($name=~/\s/) {
push(@errors,"$name not created -- Name must not contain spaces");
next;
}
if ($name=~/\W/) {
push(@errors,"$name not created -- Name must contain only letters, numbers and _");
next;
}
if ($entries{$fields{'type'}}) {
$slot{'type'}=$entries{$fields{'type'}};
} else {
$slot{'type'}='preassigned';
}
if ($slot{'type'} ne 'preassigned' &&
$slot{'type'} ne 'schedulable_student') {
push(@errors,"$name not created -- invalid type ($slot{'type'}) must be either preassigned or schedulable_student");
next;
}
if ($entries{$fields{'starttime'}}) {
$slot{'starttime'}=&UnixDate($entries{$fields{'starttime'}},"%s");
}
if ($entries{$fields{'endtime'}}) {
$slot{'endtime'}=&UnixDate($entries{$fields{'endtime'}},"%s");
}
if ($entries{$fields{'startreserve'}}) {
$slot{'startreserve'}=
&UnixDate($entries{$fields{'startreserve'}},"%s");
}
foreach my $key ('ip','proctor','description','maxspace',
'secret','symb') {
if ($entries{$fields{$key}}) {
$slot{$key}=$entries{$fields{$key}};
}
}
if ($entries{$fields{'uniqueperiod'}}) {
my ($start,$end)=split(',',$entries{$fields{'uniqueperiod'}});
my @times=(&UnixDate($start,"%s"),
&UnixDate($end,"%s"));
$slot{'uniqueperiod'}=\@times;
}
&Apache::lonnet::cput('slots',{$name=>\%slot},$cdom,$cname);
$r->print('.');
$r->rflush();
$countdone++;
}
$r->print("<p>Created $countdone slots\n</p>");
foreach my $error (@errors) {
$r->print("<p>$error\n</p>");
}
&show_table($r,$mgr);
return '';
}
sub handler {
my $r=shift;
&Apache::loncommon::content_type($r,'text/html');
&Apache::loncommon::no_cache($r);
if ($r->header_only()) {
$r->send_http_header();
return OK;
}
&Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
my $vgr=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
my $mgr=&Apache::lonnet::allowed('mgr',$env{'request.course.id'});
my $title='Requesting Another Worktime';
if ($env{'form.command'} =~ /^(showslots|uploadstart|csvuploadmap|csvuploadassign)$/ && $vgr eq 'F') {
$title = 'Managing Slots';
}
&start_page($r,$title);
if ($env{'form.command'} eq 'showslots' && $vgr eq 'F') {
&show_table($r,$mgr);
} elsif ($env{'form.command'} eq 'remove_registration' && $mgr eq 'F') {
&remove_registration($r);
} elsif ($env{'form.command'} eq 'release' && $mgr eq 'F') {
&release_slot($r,undef,undef,undef,$mgr);
} elsif ($env{'form.command'} eq 'delete' && $mgr eq 'F') {
&delete_slot($r);
} elsif ($env{'form.command'} eq 'uploadstart' && $mgr eq 'F') {
&upload_start($r);
} elsif ($env{'form.command'} eq 'csvuploadmap' && $mgr eq 'F') {
&csv_upload_map($r);
} elsif ($env{'form.command'} eq 'csvuploadassign' && $mgr eq 'F') {
if ($env{'form.associate'} ne 'Reverse Association') {
&csv_upload_assign($r,$mgr);
} else {
if ( $env{'form.upfile_associate'} ne 'reverse' ) {
$env{'form.upfile_associate'} = 'reverse';
} else {
$env{'form.upfile_associate'} = 'forward';
}
&csv_upload_map($r);
}
} else {
my $symb=&Apache::lonnet::unescape($env{'form.symb'});
my (undef,undef,$res)=&Apache::lonnet::decode_symb($symb);
my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
if ($useslots ne 'resource') {
&fail($r,'not_valid');
return OK;
}
$env{'request.symb'}=$symb;
my $type = ($res =~ /\.task$/) ? 'Task'
: 'problem';
my ($status) = &Apache::lonhomework::check_slot_access('0',$type);
if ($status eq 'CAN_ANSWER' ||
$status eq 'NEEDS_CHECKIN' ||
$status eq 'WAITING_FOR_GRADE') {
&fail($r,'not_allowed');
return OK;
}
if ($env{'form.requestattempt'}) {
&show_choices($r,$symb);
} elsif ($env{'form.command'} eq 'release') {
&release_slot($r,$symb);
} elsif ($env{'form.command'} eq 'get') {
&get_slot($r,$symb);
} elsif ($env{'form.command'} eq 'change') {
if (&release_slot($r,$symb,$env{'form.releaseslot'},1)) {
&get_slot($r,$symb);
}
} else {
$r->print("<p>Unknown command: ".$env{'form.command'}."</p>");
}
}
&end_page($r);
return OK;
}
1;
__END__
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