1: # The LearningOnline Network with CAPA
2: # Handler for requesting to have slots added to a students record
3: #
4: # $Id: slotrequest.pm,v 1.48 2006/02/26 19:40:14 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30: package Apache::slotrequest;
31:
32: use strict;
33: use Apache::Constants qw(:common :http :methods);
34: use Apache::loncommon();
35: use Apache::lonlocal;
36: use Apache::lonnet;
37: use Apache::lonnavmaps();
38: use Date::Manip;
39:
40: sub fail {
41: my ($r,$code)=@_;
42: if ($code eq 'not_valid') {
43: $r->print('<p>'.&mt('Unable to understand what resource you wanted to sign up for.').'</p>');
44:
45: } elsif ($code eq 'not_allowed') {
46: $r->print('<p>'.&mt('Not allowed to sign up or change reservations at this time.').'</p>');
47: } else {
48: $r->print('<p>'.&mt('Failed.').'</p>');
49: }
50:
51: &return_link($r);
52: &end_page($r);
53: }
54:
55: sub start_page {
56: my ($r,$title)=@_;
57: my $html=&Apache::lonxml::xmlbegin();
58: $r->print($html.'<head><title>'.&mt($title).'</title></head>');
59: $r->print(&Apache::loncommon::bodytag($title));
60: }
61:
62: sub end_page {
63: my ($r)=@_;
64: $r->print(&Apache::loncommon::endbodytag().'</html>');
65: }
66:
67: =pod
68:
69: slot_reservations db
70: - keys are
71: - slotname\0id -> value is an hashref of
72: name -> user@domain of holder
73: timestamp -> timestamp of reservation
74: symb -> symb of resource that it is reserved for
75:
76: =cut
77:
78: sub get_course {
79: (undef,my $courseid)=&Apache::lonxml::whichuser();
80: my $cdom=$env{'course.'.$courseid.'.domain'};
81: my $cnum=$env{'course.'.$courseid.'.num'};
82: return ($cnum,$cdom);
83: }
84:
85: sub get_reservation_ids {
86: my ($slot_name)=@_;
87:
88: my ($cnum,$cdom)=&get_course();
89:
90: my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
91: "^$slot_name\0");
92: if (&network_error(%consumed)) {
93: return 'error: Unable to determine current status';
94: }
95: my ($tmp)=%consumed;
96: if ($tmp=~/^error: 2 / ) {
97: return 0;
98: }
99: return keys(%consumed);
100: }
101:
102: sub space_available {
103: my ($slot_name,$slot)=@_;
104: my $max=$slot->{'maxspace'};
105:
106: if (!defined($max)) { return 1; }
107:
108: my $consumed=scalar(&get_reservation_ids($slot_name));
109: if ($consumed < $max) {
110: return 1
111: }
112: return 0;
113: }
114:
115: sub check_for_reservation {
116: my ($symb,$mode)=@_;
117: my $student = &Apache::lonnet::EXT("resource.0.availablestudent", $symb,
118: $env{'user.domain'}, $env{'user.name'});
119:
120: my $course = &Apache::lonnet::EXT("resource.0.available", $symb,
121: $env{'user.domain'}, $env{'user.name'});
122: my @slots = (split(/:/,$student), split(/:/, $course));
123:
124: &Apache::lonxml::debug(" slot list is ".join(':',@slots));
125:
126: my ($cnum,$cdom)=&get_course();
127: my %slots=&Apache::lonnet::get('slots', [@slots], $cdom, $cnum);
128:
129: if (&network_error($student) || &network_error($course) ||
130: &network_error(%slots)) {
131: return 'error: Unable to determine current status';
132: }
133: my @got;
134: foreach my $slot_name (sort {
135: if (ref($slots{$a}) && ref($slots{$b})) {
136: return $slots{$a}{'starttime'} <=> $slots{$b}{'starttime'}
137: }
138: if (ref($slots{$a})) { return -1;}
139: if (ref($slots{$b})) { return 1;}
140: return 0;
141: } @slots) {
142: next if (!defined($slots{$slot_name}) ||
143: !ref($slots{$slot_name}));
144: &Apache::lonxml::debug(time." $slot_name ".
145: $slots{$slot_name}->{'starttime'}." -- ".
146: $slots{$slot_name}->{'startreserve'});
147: if ($slots{$slot_name}->{'endtime'} > time &&
148: $slots{$slot_name}->{'startreserve'} < time) {
149: # between start of reservation times and end of slot
150: if ($mode eq 'allslots') {
151: push(@got,$slot_name);
152: } else {
153: return($slot_name, $slots{$slot_name});
154: }
155: }
156: }
157: if ($mode eq 'allslots' && @got) {
158: return @got;
159: }
160: return (undef,undef);
161: }
162:
163: sub get_consumed_uniqueperiods {
164: my ($slots) = @_;
165: my $navmap=Apache::lonnavmaps::navmap->new;
166: my @problems = $navmap->retrieveResources(undef,
167: sub { $_[0]->is_problem() },1,0);
168: my %used_slots;
169: foreach my $problem (@problems) {
170: my $symb = $problem->symb();
171: my $student = &Apache::lonnet::EXT("resource.0.availablestudent",
172: $symb, $env{'user.domain'},
173: $env{'user.name'});
174: my $course = &Apache::lonnet::EXT("resource.0.available",
175: $symb, $env{'user.domain'},
176: $env{'user.name'});
177: if (&network_error($student) || &network_error($course)) {
178: return 'error: Unable to determine current status';
179: }
180: foreach my $slot (split(/:/,$student), split(/:/, $course)) {
181: $used_slots{$slot}=1;
182: }
183: }
184:
185: if (!ref($slots)) {
186: my ($cnum,$cdom)=&get_course();
187: my %slots=&Apache::lonnet::get('slots', [keys(%used_slots)], $cdom, $cnum);
188: if (&network_error(%slots)) {
189: return 'error: Unable to determine current status';
190: }
191: $slots = \%slots;
192: }
193:
194: my %consumed_uniqueperiods;
195: foreach my $slot_name (keys(%used_slots)) {
196: next if (!defined($slots->{$slot_name}) ||
197: !ref($slots->{$slot_name}));
198:
199: next if (!defined($slots->{$slot_name}{'uniqueperiod'}) ||
200: !ref($slots->{$slot_name}{'uniqueperiod'}));
201: $consumed_uniqueperiods{$slot_name} =
202: $slots->{$slot_name}{'uniqueperiod'};
203: }
204: return \%consumed_uniqueperiods;
205: }
206:
207: sub check_for_conflict {
208: my ($symb,$new_slot_name,$new_slot,$slots,$consumed_uniqueperiods)=@_;
209:
210: if (!defined($new_slot->{'uniqueperiod'})) { return undef; }
211:
212: if (!ref($consumed_uniqueperiods)) {
213: $consumed_uniqueperiods = &get_consumed_uniqueperiods($slots);
214: if (&network_error(%$consumed_uniqueperiods)) {
215: return 'error: Unable to determine current status';
216: }
217: }
218:
219: my ($new_uniq_start,$new_uniq_end) = @{$new_slot->{'uniqueperiod'}};
220: foreach my $slot_name (keys(%$consumed_uniqueperiods)) {
221: my ($start,$end)=@{$consumed_uniqueperiods->{$slot_name}};
222: if (!
223: ($start < $new_uniq_start && $end < $new_uniq_start) ||
224: ($start > $new_uniq_end && $end > $new_uniq_end )) {
225: return $slot_name;
226: }
227: }
228: return undef;
229:
230: }
231:
232: sub network_error {
233: my ($result) = @_;
234: if ($result =~ /^(con_lost|no_such_host|error: [^2])/) {
235: return 1;
236: }
237: return 0;
238: }
239:
240: sub make_reservation {
241: my ($slot_name,$slot,$symb)=@_;
242:
243: my ($cnum,$cdom)=&get_course();
244:
245: my $value=&Apache::lonnet::EXT("resource.0.availablestudent",$symb,
246: $env{'user.domain'},$env{'user.name'});
247: &Apache::lonxml::debug("value is $value<br />");
248: if (&network_error($value)) {
249: return 'error: Unable to determine current status';
250: }
251:
252: foreach my $other_slot (split(/:/, $value)) {
253: if ($other_slot eq $slot_name) {
254: my %consumed=&Apache::lonnet::dump('slot_reservations', $cdom,
255: $cnum, "^$slot_name\0");
256: if (&network_error($value)) {
257: return 'error: Unable to determine current status';
258: }
259: my $me=$env{'user.name'}.'@'.$env{'user.domain'};
260: foreach my $key (keys(%consumed)) {
261: if ($consumed{$key}->{'name'} eq $me) {
262: my $num=(split('\0',$key))[1];
263: return -$num;
264: }
265: }
266: }
267: }
268:
269: my $max=$slot->{'maxspace'};
270: if (!defined($max)) { $max=99999; }
271:
272: my (@ids)=&get_reservation_ids($slot_name);
273: if (&network_error(@ids)) {
274: return 'error: Unable to determine current status';
275: }
276: my $last=0;
277: foreach my $id (@ids) {
278: my $num=(split('\0',$id))[1];
279: if ($num > $last) { $last=$num; }
280: }
281:
282: my $wanted=$last+1;
283: &Apache::lonxml::debug("wanted $wanted<br />");
284: if (scalar(@ids) >= $max) {
285: # full up
286: return undef;
287: }
288:
289: my %reservation=('name' => $env{'user.name'}.'@'.$env{'user.domain'},
290: 'timestamp' => time,
291: 'symb' => $symb);
292:
293: my $success=&Apache::lonnet::newput('slot_reservations',
294: {"$slot_name\0$wanted" =>
295: \%reservation},
296: $cdom, $cnum);
297:
298: if ($success eq 'ok') {
299: my $new_value=$slot_name;
300: if ($value) {
301: $new_value=$value.':'.$new_value;
302: }
303: my $result=&Apache::lonparmset::storeparm_by_symb($symb,
304: '0_availablestudent',
305: 1, $new_value, 'string',
306: $env{'user.name'},
307: $env{'user.domain'});
308: &Apache::lonxml::debug("hrrm $result");
309: return $wanted;
310: }
311:
312: # someone else got it
313: return undef;
314: }
315:
316: sub remove_registration {
317: my ($r) = @_;
318: my $name = &Apache::loncommon::plainname($env{'form.uname'},
319: $env{'form.udom'});
320:
321: my $title = &Apache::lonnet::gettitle($env{'form.symb'});
322:
323: my $hidden_input;
324: foreach my $parm ('uname','udom','slotname','entry','symb') {
325: $hidden_input .=
326: '<input type="hidden" name="'.$parm.'" value="'
327: .&HTML::Entities::encode($env{'form.'.$parm},'"<>&\'').'" />'."\n";
328: }
329: $r->print(<<"END_CONFIRM");
330: <p> Remove $name from slot $env{'form.slotname'} for $title</p>
331: <form action="/adm/slotrequest" method="POST">
332: <input type="hidden" name="command" value="release" />
333: $hidden_input
334: <input type="submit" name="Yes" value="yes" />
335: </form>
336: <form action="/adm/slotrequest" method="POST">
337: <input type="hidden" name="command" value="showslots" />
338: <input type="submit" name="No" value="no" />
339: </form>
340: END_CONFIRM
341:
342: }
343:
344: sub release_slot {
345: my ($r,$symb,$slot_name,$inhibit_return_link,$mgr)=@_;
346:
347: if ($slot_name eq '') { $slot_name=$env{'form.slotname'}; }
348: my ($cnum,$cdom)=&get_course();
349:
350: my ($uname,$udom) = ($env{'user.name'}, $env{'user.domain'});
351: if ($mgr eq 'F'
352: && defined($env{'form.uname'}) && defined($env{'form.udom'})) {
353: ($uname,$udom) = ($env{'form.uname'}, $env{'form.udom'});
354: }
355:
356: if ($mgr eq 'F'
357: && defined($env{'form.symb'})) {
358: $symb = $env{'form.symb'};
359: }
360: my %slot=&Apache::lonnet::get_slot($slot_name);
361: my $description=&get_description($env{'form.slotname'},\%slot);
362:
363: if ($mgr ne 'F') {
364: if ($slot{'starttime'} < time) {
365: $r->print("<p>Not allowed to release Reservation: $description, as it has already ended. </p>");
366: &return_link($r);
367: return 0;
368: }
369: }
370: # get parameter string, check for existance, rebuild string with the slot
371: my @slots = split(/:/,&Apache::lonnet::EXT("resource.0.availablestudent",
372: $symb,$udom,$uname));
373:
374: my @new_slots;
375: foreach my $exist_slot (@slots) {
376: if ($exist_slot eq $slot_name) { next; }
377: push(@new_slots,$exist_slot);
378: }
379: my $new_param = join(':',@new_slots);
380:
381: # get slot reservations, check if user has one, if so remove reservation
382: my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
383: "^$slot_name\0");
384: foreach my $entry (keys(%consumed)) {
385: if ( $consumed{$entry}->{'name'} eq ($uname.'@'.$udom) ) {
386: &Apache::lonnet::del('slot_reservations',[$entry],
387: $cdom,$cnum);
388: }
389: }
390:
391: # store new parameter string
392: my $result=&Apache::lonparmset::storeparm_by_symb($symb,
393: '0_availablestudent',
394: 1, $new_param, 'string',
395: $uname,$udom);
396: $r->print("<p>Released Reservation: $description</p>");
397: if ($mgr eq 'F') {
398: $r->print('<p><a href="/adm/slotrequest?command=showslots">'.
399: &mt('Return to slot list').'</a></p>');
400: }
401: if (!$inhibit_return_link) { &return_link($r); }
402: return 1;
403: }
404:
405: sub delete_slot {
406: my ($r)=@_;
407:
408: my $slot_name = $env{'form.slotname'};
409: my %slot=&Apache::lonnet::get_slot($slot_name);
410:
411: my ($cnum,$cdom)=&get_course();
412: my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
413: "^$slot_name\0");
414: my ($tmp) = %consumed;
415: if ($tmp =~ /error: 2/) { undef(%consumed); }
416:
417: if (%slot && !%consumed) {
418: $slot{'type'} = 'deleted';
419: my $ret = &Apache::lonnet::cput('slots', {$slot_name => \%slot},
420: $cdom, $cnum);
421: if ($ret eq 'ok') {
422: $r->print("<p>Slot <tt>$slot_name</tt> marked as deleted.</p>");
423: } else {
424: $r->print("<p> An error ($ret) occurse when attempting to delete Slot <tt>$slot_name</tt>.</p>");
425: }
426: } else {
427: if (%consumed) {
428: $r->print("<p>Slot <tt>$slot_name</tt> has active reservations.</p>");
429: } else {
430: $r->print("<p>Slot <tt>$slot_name</tt> does not exist.</p>");
431: }
432: }
433: $r->print('<p><a href="/adm/slotrequest?command=showslots">'.
434: &mt('Return to slot list').'</a></p>');
435: &return_link($r);
436: }
437:
438: sub return_link {
439: my ($r) = @_;
440: $r->print('<p><a href="/adm/flip?postdata=return:">'.
441: &mt('Return to last resource').'</a></p>');
442: }
443:
444: sub get_slot {
445: my ($r,$symb)=@_;
446:
447: my %slot=&Apache::lonnet::get_slot($env{'form.slotname'});
448: my $slot_name=&check_for_conflict($symb,$env{'form.slotname'},\%slot);
449:
450: if ($slot_name =~ /^error: (.*)/) {
451: $r->print("<p>An error occured while attempting to make a reservation. ($1)</p>");
452: &return_link($r);
453: return;
454: }
455: if ($slot_name) {
456: my %slot=&Apache::lonnet::get_slot($slot_name);
457: my $description1=&get_description($slot_name,\%slot);
458: %slot=&Apache::lonnet::get_slot($env{'form.slotname'});
459: my $description2=&get_description($env{'form.slotname'},\%slot);
460: $r->print("<p>Already have a reservation: $description1</p>");
461: if ($slot_name ne $env{'form.slotname'}) {
462: $r->print(<<STUFF);
463: <form method="POST" action="/adm/slotrequest">
464: <input type="hidden" name="symb" value="$env{'form.symb'}" />
465: <input type="hidden" name="slotname" value="$env{'form.slotname'}" />
466: <input type="hidden" name="releaseslot" value="$slot_name" />
467: <input type="hidden" name="command" value="change" />
468: STUFF
469: $r->print("<p>You can either ");
470: $r->print(<<STUFF);
471: <input type="submit" name="change" value="Change" />
472: STUFF
473: $r->print(' your reservation from <b>'.$description1.'</b> to <b>'.
474: $description2.
475: '</b> <br />or </p>');
476: &return_link($r);
477: $r->print(<<STUFF);
478: </form>
479: STUFF
480: } else {
481: &return_link($r);
482: }
483: return;
484: }
485:
486: my $reserved=&make_reservation($env{'form.slotname'},
487: \%slot,$symb);
488: my $description=&get_description($env{'form.slotname'},\%slot);
489: if (defined($reserved)) {
490: if ($slot_name =~ /^error: (.*)/) {
491: $r->print("<p>An error occured while attempting to make a reservation. ($1)</p>");
492: } elsif ($reserved > -1) {
493: $r->print("<p>Success: $description</p>");
494: } elsif ($reserved < 0) {
495: $r->print("<p>Already reserved: $description</p>");
496: }
497: &return_link($r);
498: return;
499: }
500:
501: my %lt=('request'=>"Availibility list",
502: 'try' =>'Try again');
503: %lt=&Apache::lonlocal::texthash(%lt);
504:
505: $r->print(<<STUFF);
506: <p> <font color="red">Failed</font> to reserve a spot for $description. </p>
507: <p>
508: <form method="POST" action="/adm/slotrequest">
509: <input type="submit" name="Try Again" value="$lt{'try'}" />
510: <input type="hidden" name="symb" value="$env{'form.symb'}" />
511: <input type="hidden" name="slotname" value="$env{'form.slotname'}" />
512: <input type="hidden" name="command" value="get" />
513: </form>
514: ?
515: </p>
516: <p>
517: or
518: <form method="POST" action="/adm/slotrequest">
519: <input type="hidden" name="symb" value="$env{'form.symb'}" />
520: <input type="submit" name="requestattempt" value="$lt{'request'}" />
521: </form>
522: </p>
523: or
524: STUFF
525:
526: &return_link($r);
527: return;
528: }
529:
530: sub allowed_slot {
531: my ($slot_name,$slot,$symb,$slots,$consumed_uniqueperiods)=@_;
532: #already started
533: if ($slot->{'starttime'} < time) {
534: # all open slot to be schedulable
535: #return 0;
536: }
537: &Apache::lonxml::debug("$slot_name starttime good");
538: #already ended
539: if ($slot->{'endtime'} < time) {
540: return 0;
541: }
542: &Apache::lonxml::debug("$slot_name endtime good");
543: # not allowed to pick this one
544: if (defined($slot->{'type'})
545: && $slot->{'type'} ne 'schedulable_student') {
546: return 0;
547: }
548: &Apache::lonxml::debug("$slot_name type good");
549: # not allowed for this resource
550: if (defined($slot->{'symb'})
551: && $slot->{'symb'} ne $symb) {
552: return 0;
553: }
554: my $conflict = &check_for_conflict($symb,$slot_name,$slot,$slots,
555: $consumed_uniqueperiods);
556: if ($conflict) {
557: if ($slots->{$conflict}{'starttime'} < time) {
558: return 0;
559: }
560: }
561: &Apache::lonxml::debug("$slot_name symb good");
562: return 1;
563: }
564:
565: sub get_description {
566: my ($slot_name,$slot)=@_;
567: my $description=$slot->{'description'};
568: if (!defined($description)) {
569: $description=&mt('[_1] From [_2] to [_3]',$slot_name,
570: &Apache::lonlocal::locallocaltime($slot->{'starttime'}),
571: &Apache::lonlocal::locallocaltime($slot->{'endtime'}));
572: }
573: return $description;
574: }
575:
576: sub show_choices {
577: my ($r,$symb)=@_;
578:
579: my ($cnum,$cdom)=&get_course();
580: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
581: my $consumed_uniqueperiods = &get_consumed_uniqueperiods(\%slots);
582: my $available;
583: $r->print('<table border="1">');
584: &Apache::lonxml::debug("Checking Slots");
585: my @got_slots=&check_for_reservation($symb,'allslots');
586: foreach my $slot (sort
587: { return $slots{$a}->{'starttime'} <=> $slots{$b}->{'starttime'} }
588: (keys(%slots))) {
589:
590: &Apache::lonxml::debug("Checking Slot $slot");
591: next if (!&allowed_slot($slot,$slots{$slot},undef,\%slots,
592: $consumed_uniqueperiods));
593:
594: $available++;
595:
596: my $description=&get_description($slot,$slots{$slot});
597:
598: my $form=&mt('Unavailable');
599: if ((grep(/^\Q$slot\E$/,@got_slots)) ||
600: &space_available($slot,$slots{$slot},$symb)) {
601: my $text=&mt('Select');
602: my $command='get';
603: if (grep(/^\Q$slot\E$/,@got_slots)) {
604: $text=&mt('Free Reservation');
605: $command='release';
606: } else {
607: my $conflict = &check_for_conflict($symb,$slot,$slots{$slot},
608: \%slots,
609: $consumed_uniqueperiods);
610: if ($conflict) {
611: $text=&mt('Change Reservation');
612: $command='get';
613: }
614: }
615: my $escsymb=&Apache::lonnet::escape($symb);
616: $form=<<STUFF;
617: <form method="POST" action="/adm/slotrequest">
618: <input type="submit" name="Select" value="$text" />
619: <input type="hidden" name="symb" value="$escsymb" />
620: <input type="hidden" name="slotname" value="$slot" />
621: <input type="hidden" name="command" value="$command" />
622: </form>
623: STUFF
624: }
625: $r->print(<<STUFF);
626: <tr>
627: <td>$form</td>
628: <td>$description</td>
629: </tr>
630: STUFF
631: }
632:
633: if (!$available) {
634: $r->print('<tr><td>No available times. <a href="/adm/flip?postdata=return:">'.
635: &mt('Return to last resource').'</a></td></tr>');
636: }
637: $r->print('</table>');
638: }
639:
640: sub to_show {
641: my ($slot,$when,$deleted) = @_;
642: my $time=time;
643: my $week=60*60*24*7;
644: if ($deleted eq 'hide' && $slot->{'type'} eq 'deleted') {
645: return 0;
646: }
647: if ($when eq 'any') {
648: return 1;
649: } elsif ($when eq 'now') {
650: if ($time > $slot->{'starttime'} &&
651: $time < $slot->{'endtime'}) {
652: return 1;
653: }
654: return 0;
655: } elsif ($when eq 'nextweek') {
656: if ( ($time < $slot->{'starttime'} &&
657: ($time+$week) > $slot->{'starttime'})
658: ||
659: ($time < $slot->{'endtime'} &&
660: ($time+$week) > $slot->{'endtime'}) ) {
661: return 1;
662: }
663: return 0;
664: } elsif ($when eq 'lastweek') {
665: if ( ($time > $slot->{'starttime'} &&
666: ($time-$week) < $slot->{'starttime'})
667: ||
668: ($time > $slot->{'endtime'} &&
669: ($time-$week) < $slot->{'endtime'}) ) {
670: return 1;
671: }
672: return 0;
673: } elsif ($when eq 'willopen') {
674: if ($time < $slot->{'starttime'}) {
675: return 1;
676: }
677: return 0;
678: } elsif ($when eq 'wereopen') {
679: if ($time > $slot->{'endtime'}) {
680: return 1;
681: }
682: return 0;
683: }
684:
685: return 1;
686: }
687:
688: sub remove_link {
689: my ($slotname,$entry,$uname,$udom,$symb) = @_;
690:
691: $slotname = &Apache::lonnet::escape($slotname);
692: $entry = &Apache::lonnet::escape($entry);
693: $uname = &Apache::lonnet::escape($uname);
694: $udom = &Apache::lonnet::escape($udom);
695: $symb = &Apache::lonnet::escape($symb);
696:
697: my $remove= &mt('Remove');
698:
699: return <<"END_LINK";
700: <a href="/adm/slotrequest?command=remove_registration&slotname=$slotname&entry=$entry&uname=$uname&udom=$udom&symb=$symb"
701: >($remove)</a>
702: END_LINK
703:
704: }
705:
706: sub show_table {
707: my ($r,$mgr)=@_;
708:
709: my ($cnum,$cdom)=&get_course();
710: my %slots=&Apache::lonnet::dump('slots',$cdom,$cnum);
711: if ( (keys(%slots))[0] =~ /^error: 2 /) {
712: undef(%slots);
713: }
714: my $available;
715: if ($mgr eq 'F') {
716: $r->print('<div>');
717: $r->print('<form method="POST" action="/adm/slotrequest">
718: <input type="hidden" name="command" value="uploadstart" />
719: <input type="submit" name="start" value="'.&mt('Upload Slot List').'" />
720: </form>');
721: $r->print('<form method="POST" action="/adm/helper/newslot.helper">
722: <input type="submit" name="newslot" value="'.&mt('Create a New Slot').'" />
723: </form>');
724: $r->print('</div>');
725: }
726:
727: my %Saveable_Parameters = ('show' => 'array',
728: 'when' => 'scalar',
729: 'order' => 'scalar',
730: 'deleted' => 'scalar',
731: );
732: &Apache::loncommon::store_course_settings('slotrequest',
733: \%Saveable_Parameters);
734: &Apache::loncommon::restore_course_settings('slotrequest',
735: \%Saveable_Parameters);
736: &Apache::grades::init_perm();
737: my ($classlist,$section,$fullname)=&Apache::grades::getclasslist('all');
738: &Apache::grades::reset_perm();
739:
740: my %show_fields=&Apache::lonlocal::texthash(
741: 'name' => 'Slot Name',
742: 'description' => 'Description',
743: 'type' => 'Type',
744: 'starttime' => 'Start time',
745: 'endtime' => 'End Time',
746: 'startreserve' => 'Time students can start reserving',
747: 'secret' => 'Secret Word',
748: 'maxspace' => 'Maximum # of students',
749: 'ip' => 'IP or DNS restrictions',
750: 'symb' => 'Resource slot is restricted to.',
751: 'uniqueperiod' => 'Period of time slot is unique',
752: 'scheduled' => 'Scheduled Students',
753: 'proctor' => 'List of proctors');
754: my @show_order=('name','description','type','starttime','endtime',
755: 'startreserve','secret','maxspace','ip','symb',
756: 'uniqueperiod','scheduled','proctor');
757: my @show =
758: (exists($env{'form.show'})) ? &Apache::loncommon::get_env_multiple('form.show')
759: : keys(%show_fields);
760: my %show = map { $_ => 1 } (@show);
761:
762: my %when_fields=&Apache::lonlocal::texthash(
763: 'now' => 'Open now',
764: 'nextweek' => 'Open within the next week',
765: 'lastweek' => 'Were open last week',
766: 'willopen' => 'Will open later',
767: 'wereopen' => 'Were open',
768: 'any' => 'Anytime',
769: );
770: my @when_order=('any','now','nextweek','lastweek','willopen','wereopen');
771: $when_fields{'select_form_order'} = \@when_order;
772: my $when = (exists($env{'form.when'})) ? $env{'form.when'}
773: : 'now';
774:
775: my %stu_display_fields=
776: &Apache::lonlocal::texthash('username' => 'User name',
777: 'fullname' => 'Full name',
778: );
779: my @stu_display_order=('fullname','username');
780: my @stu_display =
781: (exists($env{'form.studisplay'})) ? &Apache::loncommon::get_env_multiple('form.studisplay')
782: : keys(%stu_display_fields);
783: my %stu_display = map { $_ => 1 } (@stu_display);
784:
785: my $hide_radio =
786: &Apache::lonhtmlcommon::radio('deleted',$env{'form.deleted'},'hide');
787: my $show_radio =
788: &Apache::lonhtmlcommon::radio('deleted',$env{'form.deleted'},'show');
789:
790: $r->print('<form method="POST" action="/adm/slotrequest">
791: <input type="hidden" name="command" value="showslots" />');
792: $r->print('<div>');
793: $r->print('<table class="inline">
794: <tr><th>'.&mt('Show').'</th>
795: <th>'.&mt('Student Display').'</th>
796: <th>'.&mt('Open').'</th>
797: <th>'.&mt('Options').'</th>
798: </tr>
799: <tr><td>'.&Apache::loncommon::multiple_select_form('show',\@show,6,\%show_fields,\@show_order).
800: '</td>
801: <td>
802: '.&Apache::loncommon::multiple_select_form('studisplay',\@stu_display,
803: 6,\%stu_display_fields,
804: \@stu_display_order).'
805: </td>
806: <td>'.&Apache::loncommon::select_form($when,'when',%when_fields).
807: '</td>
808: <td>
809: <table>
810: <tr>
811: <td rowspan="2">Deleted slots:</td>
812: <td><label>'.$show_radio.'Show</label></td>
813: </tr>
814: <tr>
815: <td><label>'.$hide_radio.'Hide</label></td>
816: </tr>
817: </table>
818: </td>
819: </tr>
820: </table>');
821: $r->print('</div>');
822: $r->print('<p><input type="submit" name="start" value="'.&mt('Update Display').'" /></p>');
823: my $linkstart='<a href="/adm/slotrequest?command=showslots&order=';
824: $r->print('<table class="thinborder">
825: <tr>
826: <th></th>');
827: foreach my $which (@show_order) {
828: if ($which ne 'proctor' && exists($show{$which})) {
829: $r->print('<th>'.$linkstart.$which.'">'.$show_fields{$which}.'</a></th>');
830: }
831: }
832:
833: my %name_cache;
834: my $slotsort = sub {
835: if ($env{'form.order'}=~/^(type|description|endtime|startreserve|maxspace|ip|symb)$/) {
836: if (lc($slots{$a}->{$env{'form.order'}})
837: ne lc($slots{$b}->{$env{'form.order'}})) {
838: return (lc($slots{$a}->{$env{'form.order'}})
839: cmp lc($slots{$b}->{$env{'form.order'}}));
840: }
841: } elsif ($env{'form.order'} eq 'name') {
842: if (lc($a) cmp lc($b)) {
843: return lc($a) cmp lc($b);
844: }
845: } elsif ($env{'form.order'} eq 'uniqueperiod') {
846:
847: if ($slots{$a}->{'uniqueperiod'}[0]
848: ne $slots{$b}->{'uniqueperiod'}[0]) {
849: return ($slots{$a}->{'uniqueperiod'}[0]
850: cmp $slots{$b}->{'uniqueperiod'}[0]);
851: }
852: if ($slots{$a}->{'uniqueperiod'}[1]
853: ne $slots{$b}->{'uniqueperiod'}[1]) {
854: return ($slots{$a}->{'uniqueperiod'}[1]
855: cmp $slots{$b}->{'uniqueperiod'}[1]);
856: }
857: }
858: return $slots{$a}->{'starttime'} <=> $slots{$b}->{'starttime'};
859: };
860: foreach my $slot (sort $slotsort (keys(%slots))) {
861: if (!&to_show($slots{$slot},$when,$env{'form.deleted'})) { next; }
862: if (defined($slots{$slot}->{'type'})
863: && $slots{$slot}->{'type'} ne 'schedulable_student') {
864: #next;
865: }
866: my $description=&get_description($slot,$slots{$slot});
867: my $ids;
868: if (exists($show{'scheduled'})) {
869: my %consumed=&Apache::lonnet::dump('slot_reservations',$cdom,$cnum,
870: "^$slot\0");
871: my ($tmp)=%consumed;
872: if ($tmp !~ /^error: /) {
873: foreach my $entry (sort(keys(%consumed))) {
874: my (undef,$id)=split("\0",$entry);
875: my ($uname,$udom) = split('@',$consumed{$entry}{'name'});
876: $ids.= '<nobr>';
877: foreach my $item (@stu_display_order) {
878: if ($stu_display{$item}) {
879: if ($item eq 'fullname') {
880: $ids.=$fullname->{"$uname:$udom"}.' ';
881: } elsif ($item eq 'username') {
882: $ids.="<tt>$uname\@$udom</tt> ";
883: }
884: }
885: }
886: $ids.=&remove_link($slot,$entry,$uname,$udom,
887: $consumed{$entry}{'symb'}).'</nobr><br />';
888: }
889: }
890: }
891:
892: my $start=($slots{$slot}->{'starttime'}?
893: &Apache::lonlocal::locallocaltime($slots{$slot}->{'starttime'}):'');
894: my $end=($slots{$slot}->{'endtime'}?
895: &Apache::lonlocal::locallocaltime($slots{$slot}->{'endtime'}):'');
896: my $start_reserve=($slots{$slot}->{'startreserve'}?
897: &Apache::lonlocal::locallocaltime($slots{$slot}->{'startreserve'}):'');
898:
899: my $unique;
900: if (ref($slots{$slot}{'uniqueperiod'})) {
901: $unique=localtime($slots{$slot}{'uniqueperiod'}[0]).','.
902: localtime($slots{$slot}{'uniqueperiod'}[1]);
903: }
904:
905: my $title;
906: if (exists($slots{$slot}{'symb'})) {
907: my (undef,undef,$res)=
908: &Apache::lonnet::decode_symb($slots{$slot}{'symb'});
909: $res = &Apache::lonnet::clutter($res);
910: $title = &Apache::lonnet::gettitle($slots{$slot}{'symb'});
911: $title='<a href="'.$res.'?symb='.$slots{$slot}{'symb'}.'">'.$title.'</a>';
912: }
913:
914: my @proctors;
915: my $rowspan=1;
916: my $colspan=1;
917: if (exists($show{'proctor'})) {
918: $rowspan=2;
919: @proctors= map {
920: my ($uname,$udom)=split(/@/,$_);
921: my $fullname=$name_cache{$_};
922: if (!defined($fullname)) {
923: &Apache::lonnet::logthis("Gettign $uname $udom");
924: $fullname = &Apache::loncommon::plainname($uname,$udom);
925: $fullname =~s/\s/ /g;
926: $name_cache{$_} = $fullname;
927: }
928: &Apache::loncommon::aboutmewrapper($fullname,$uname,$udom);
929: } (sort(split(/\s*,\s*/,$slots{$slot}->{'proctor'})));
930: }
931: my $proctors=join(', ',@proctors);
932:
933: my $edit=(<<"EDITLINK");
934: <a href="/adm/helper/newslot.helper?name=$slot">Edit</a>
935: EDITLINK
936:
937: my $delete=(<<"DELETELINK");
938: <a href="/adm/slotrequest?command=delete&slotname=$slot">Delete</a>
939: DELETELINK
940: if ($ids ne '') { undef($delete); }
941:
942: $r->print("<tr>\n<td rowspan=\"$rowspan\">$edit $delete</td>\n");
943: if (exists($show{'name'})) {
944: $colspan++;$r->print("<td>$slot</td>");
945: }
946: if (exists($show{'description'})) {
947: $colspan++;$r->print("<td>$description</td>\n");
948: }
949: if (exists($show{'type'})) {
950: $colspan++;$r->print("<td>$slots{$slot}->{'type'}</td>\n");
951: }
952: if (exists($show{'starttime'})) {
953: $colspan++;$r->print("<td>$start</td>\n");
954: }
955: if (exists($show{'endtime'})) {
956: $colspan++;$r->print("<td>$end</td>\n");
957: }
958: if (exists($show{'startreserve'})) {
959: $colspan++;$r->print("<td>$start_reserve</td>\n");
960: }
961: if (exists($show{'secret'})) {
962: $colspan++;$r->print("<td>$slots{$slot}{'secret'}</td>\n");
963: }
964: if (exists($show{'maxspace'})) {
965: $colspan++;$r->print("<td>$slots{$slot}{'maxspace'}</td>\n");
966: }
967: if (exists($show{'ip'})) {
968: $colspan++;$r->print("<td>$slots{$slot}{'ip'}</td>\n");
969: }
970: if (exists($show{'symb'})) {
971: $colspan++;$r->print("<td>$title</td>\n");
972: }
973: if (exists($show{'uniqueperiod'})) {
974: $colspan++;$r->print("<td>$unique</td>\n");
975: }
976: if (exists($show{'scheduled'})) {
977: $colspan++;$r->print("<td>$ids</td>\n</tr>\n");
978: }
979: if (exists($show{'proctor'})) {
980: $r->print(<<STUFF);
981: <tr>
982: <td colspan="$colspan">$proctors</td>
983: </tr>
984: STUFF
985: }
986: }
987: $r->print('</table>');
988: }
989:
990: sub upload_start {
991: my ($r)=@_;
992: $r->print(&Apache::grades::checkforfile_js());
993: my $result.='<table width=100% border=0><tr bgcolor="#e6ffff"><td>'."\n";
994: $result.=' <b>'.
995: &mt('Specify a file containing the slot definitions.').
996: '</b></td></tr>'."\n";
997: $result.='<tr bgcolor=#ffffe6><td>'."\n";
998: my $upfile_select=&Apache::loncommon::upfile_select_html();
999: my $ignore=&mt('Ignore First Line');
1000: $result.=<<ENDUPFORM;
1001: <form method="post" enctype="multipart/form-data" action="/adm/slotrequest" name="slotupload">
1002: <input type="hidden" name="command" value="csvuploadmap" />
1003: $upfile_select
1004: <br /><input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Data" />
1005: <label><input type="checkbox" name="noFirstLine" />$ignore</label>
1006: </form>
1007: ENDUPFORM
1008: $result.='</td></tr></table>'."\n";
1009: $result.='</td></tr></table>'."\n";
1010: $r->print($result);
1011: }
1012:
1013: sub csvuploadmap_header {
1014: my ($r,$datatoken,$distotal)= @_;
1015: my $javascript;
1016: if ($env{'form.upfile_associate'} eq 'reverse') {
1017: $javascript=&csvupload_javascript_reverse_associate();
1018: } else {
1019: $javascript=&csvupload_javascript_forward_associate();
1020: }
1021:
1022: my $checked=(($env{'form.noFirstLine'})?' checked="checked"':'');
1023: my $ignore=&mt('Ignore First Line');
1024: $r->print(<<ENDPICK);
1025: <form method="post" enctype="multipart/form-data" action="/adm/slotrequest" name="slotupload">
1026: <h3>Identify fields</h3>
1027: Total number of records found in file: $distotal <hr />
1028: Enter as many fields as you can. The system will inform you and bring you back
1029: to this page if the data selected is insufficient to create the slots.<hr />
1030: <input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
1031: <label><input type="checkbox" name="noFirstLine" $checked />$ignore</label>
1032: <input type="hidden" name="associate" value="" />
1033: <input type="hidden" name="datatoken" value="$datatoken" />
1034: <input type="hidden" name="fileupload" value="$env{'form.fileupload'}" />
1035: <input type="hidden" name="upfiletype" value="$env{'form.upfiletype'}" />
1036: <input type="hidden" name="upfile_associate"
1037: value="$env{'form.upfile_associate'}" />
1038: <input type="hidden" name="command" value="csvuploadassign" />
1039: <hr />
1040: <script type="text/javascript" language="Javascript">
1041: $javascript
1042: </script>
1043: ENDPICK
1044: return '';
1045:
1046: }
1047:
1048: sub csvuploadmap_footer {
1049: my ($request,$i,$keyfields) =@_;
1050: $request->print(<<ENDPICK);
1051: </table>
1052: <input type="hidden" name="nfields" value="$i" />
1053: <input type="hidden" name="keyfields" value="$keyfields" />
1054: <input type="button" onClick="javascript:verify(this.form)" value="Create Slots" /><br />
1055: </form>
1056: ENDPICK
1057: }
1058:
1059: sub csvupload_javascript_reverse_associate {
1060: my $error1=&mt('You need to specify the name, starttime, endtime and a type');
1061: return(<<ENDPICK);
1062: function verify(vf) {
1063: var foundstart=0;
1064: var foundend=0;
1065: var foundname=0;
1066: var foundtype=0;
1067: for (i=0;i<=vf.nfields.value;i++) {
1068: tw=eval('vf.f'+i+'.selectedIndex');
1069: if (i==0 && tw!=0) { foundname=1; }
1070: if (i==1 && tw!=0) { foundtype=1; }
1071: if (i==2 && tw!=0) { foundstat=1; }
1072: if (i==3 && tw!=0) { foundend=1; }
1073: }
1074: if (foundstart==0 && foundend==0 && foundtype==0 && foundname==0) {
1075: alert('$error1');
1076: return;
1077: }
1078: vf.submit();
1079: }
1080: function flip(vf,tf) {
1081: }
1082: ENDPICK
1083: }
1084:
1085: sub csvupload_javascript_forward_associate {
1086: my $error1=&mt('You need to specify the name, starttime, endtime and a type');
1087: return(<<ENDPICK);
1088: function verify(vf) {
1089: var foundstart=0;
1090: var foundend=0;
1091: var foundname=0;
1092: var foundtype=0;
1093: for (i=0;i<=vf.nfields.value;i++) {
1094: tw=eval('vf.f'+i+'.selectedIndex');
1095: if (tw==1) { foundname=1; }
1096: if (tw==2) { foundtype=1; }
1097: if (tw==3) { foundstat=1; }
1098: if (tw==4) { foundend=1; }
1099: }
1100: if (foundstart==0 && foundend==0 && foundtype==0 && foundname==0) {
1101: alert('$error1');
1102: return;
1103: }
1104: vf.submit();
1105: }
1106: function flip(vf,tf) {
1107: }
1108: ENDPICK
1109: }
1110:
1111: sub csv_upload_map {
1112: my ($r)= @_;
1113:
1114: my $datatoken;
1115: if (!$env{'form.datatoken'}) {
1116: $datatoken=&Apache::loncommon::upfile_store($r);
1117: } else {
1118: $datatoken=$env{'form.datatoken'};
1119: &Apache::loncommon::load_tmp_file($r);
1120: }
1121: my @records=&Apache::loncommon::upfile_record_sep();
1122: if ($env{'form.noFirstLine'}) { shift(@records); }
1123: &csvuploadmap_header($r,$datatoken,$#records+1);
1124: my ($i,$keyfields);
1125: if (@records) {
1126: my @fields=&csvupload_fields();
1127:
1128: if ($env{'form.upfile_associate'} eq 'reverse') {
1129: &Apache::loncommon::csv_print_samples($r,\@records);
1130: $i=&Apache::loncommon::csv_print_select_table($r,\@records,
1131: \@fields);
1132: foreach (@fields) { $keyfields.=$_->[0].','; }
1133: chop($keyfields);
1134: } else {
1135: unshift(@fields,['none','']);
1136: $i=&Apache::loncommon::csv_samples_select_table($r,\@records,
1137: \@fields);
1138: my %sone=&Apache::loncommon::record_sep($records[0]);
1139: $keyfields=join(',',sort(keys(%sone)));
1140: }
1141: }
1142: &csvuploadmap_footer($r,$i,$keyfields);
1143:
1144: return '';
1145: }
1146:
1147: sub csvupload_fields {
1148: return (['name','Slot name'],
1149: ['type','Type of slot'],
1150: ['starttime','Start Time of slot'],
1151: ['endtime','End Time of slot'],
1152: ['startreserve','Reservation Start Time'],
1153: ['ip','IP or DNS restriction'],
1154: ['proctor','List of proctor ids'],
1155: ['description','Slot Description'],
1156: ['maxspace','Maximum number of reservations'],
1157: ['symb','Resource Restriction'],
1158: ['uniqueperiod','Date range of slot exclusion'],
1159: ['secret','Secret word proctor uses to validate']);
1160: }
1161:
1162: sub csv_upload_assign {
1163: my ($r,$mgr)= @_;
1164: &Apache::loncommon::load_tmp_file($r);
1165: my @slotdata = &Apache::loncommon::upfile_record_sep();
1166: if ($env{'form.noFirstLine'}) { shift(@slotdata); }
1167: my %fields=&Apache::grades::get_fields();
1168: $r->print('<h3>Creating Slots</h3>');
1169: my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
1170: my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
1171: my $countdone=0;
1172: my @errors;
1173: foreach my $slot (@slotdata) {
1174: my %slot;
1175: my %entries=&Apache::loncommon::record_sep($slot);
1176: my $domain;
1177: my $name=$entries{$fields{'name'}};
1178: if ($name=~/^\s*$/) {
1179: push(@errors,"Did not create slot with no name");
1180: next;
1181: }
1182: if ($name=~/\s/) {
1183: push(@errors,"$name not created -- Name must not contain spaces");
1184: next;
1185: }
1186: if ($name=~/\W/) {
1187: push(@errors,"$name not created -- Name must contain only letters, numbers and _");
1188: next;
1189: }
1190: if ($entries{$fields{'type'}}) {
1191: $slot{'type'}=$entries{$fields{'type'}};
1192: } else {
1193: $slot{'type'}='preassigned';
1194: }
1195: if ($slot{'type'} ne 'preassigned' &&
1196: $slot{'type'} ne 'schedulable_student') {
1197: push(@errors,"$name not created -- invalid type ($slot{'type'}) must be either preassigned or schedulable_student");
1198: next;
1199: }
1200: if ($entries{$fields{'starttime'}}) {
1201: $slot{'starttime'}=&UnixDate($entries{$fields{'starttime'}},"%s");
1202: }
1203: if ($entries{$fields{'endtime'}}) {
1204: $slot{'endtime'}=&UnixDate($entries{$fields{'endtime'}},"%s");
1205: }
1206: if ($entries{$fields{'startreserve'}}) {
1207: $slot{'startreserve'}=
1208: &UnixDate($entries{$fields{'startreserve'}},"%s");
1209: }
1210: foreach my $key ('ip','proctor','description','maxspace',
1211: 'secret','symb') {
1212: if ($entries{$fields{$key}}) {
1213: $slot{$key}=$entries{$fields{$key}};
1214: }
1215: }
1216: if ($entries{$fields{'uniqueperiod'}}) {
1217: my ($start,$end)=split(',',$entries{$fields{'uniqueperiod'}});
1218: my @times=(&UnixDate($start,"%s"),
1219: &UnixDate($end,"%s"));
1220: $slot{'uniqueperiod'}=\@times;
1221: }
1222:
1223: &Apache::lonnet::cput('slots',{$name=>\%slot},$cdom,$cname);
1224: $r->print('.');
1225: $r->rflush();
1226: $countdone++;
1227: }
1228: $r->print("<p>Created $countdone slots\n</p>");
1229: foreach my $error (@errors) {
1230: $r->print("<p>$error\n</p>");
1231: }
1232: &show_table($r,$mgr);
1233: return '';
1234: }
1235:
1236: sub handler {
1237: my $r=shift;
1238:
1239: &Apache::loncommon::content_type($r,'text/html');
1240: &Apache::loncommon::no_cache($r);
1241: if ($r->header_only()) {
1242: $r->send_http_header();
1243: return OK;
1244: }
1245:
1246: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
1247:
1248: my $vgr=&Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1249: my $mgr=&Apache::lonnet::allowed('mgr',$env{'request.course.id'});
1250: my $title='Requesting Another Worktime';
1251: if ($env{'form.command'} =~ /^(showslots|uploadstart|csvuploadmap|csvuploadassign)$/ && $vgr eq 'F') {
1252: $title = 'Managing Slots';
1253: }
1254: &start_page($r,$title);
1255:
1256: if ($env{'form.command'} eq 'showslots' && $vgr eq 'F') {
1257: &show_table($r,$mgr);
1258: } elsif ($env{'form.command'} eq 'remove_registration' && $mgr eq 'F') {
1259: &remove_registration($r);
1260: } elsif ($env{'form.command'} eq 'release' && $mgr eq 'F') {
1261: &release_slot($r,undef,undef,undef,$mgr);
1262: } elsif ($env{'form.command'} eq 'delete' && $mgr eq 'F') {
1263: &delete_slot($r);
1264: } elsif ($env{'form.command'} eq 'uploadstart' && $mgr eq 'F') {
1265: &upload_start($r);
1266: } elsif ($env{'form.command'} eq 'csvuploadmap' && $mgr eq 'F') {
1267: &csv_upload_map($r);
1268: } elsif ($env{'form.command'} eq 'csvuploadassign' && $mgr eq 'F') {
1269: if ($env{'form.associate'} ne 'Reverse Association') {
1270: &csv_upload_assign($r,$mgr);
1271: } else {
1272: if ( $env{'form.upfile_associate'} ne 'reverse' ) {
1273: $env{'form.upfile_associate'} = 'reverse';
1274: } else {
1275: $env{'form.upfile_associate'} = 'forward';
1276: }
1277: &csv_upload_map($r);
1278: }
1279: } else {
1280: my $symb=&Apache::lonnet::unescape($env{'form.symb'});
1281: my (undef,undef,$res)=&Apache::lonnet::decode_symb($symb);
1282: my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
1283: if ($useslots ne 'resource') {
1284: &fail($r,'not_valid');
1285: return OK;
1286: }
1287: $env{'request.symb'}=$symb;
1288: my $type = ($res =~ /\.task$/) ? 'Task'
1289: : 'problem';
1290: my ($status) = &Apache::lonhomework::check_slot_access('0',$type);
1291: if ($status eq 'CAN_ANSWER' ||
1292: $status eq 'NEEDS_CHECKIN' ||
1293: $status eq 'WAITING_FOR_GRADE') {
1294: &fail($r,'not_allowed');
1295: return OK;
1296: }
1297: if ($env{'form.requestattempt'}) {
1298: &show_choices($r,$symb);
1299: } elsif ($env{'form.command'} eq 'release') {
1300: &release_slot($r,$symb);
1301: } elsif ($env{'form.command'} eq 'get') {
1302: &get_slot($r,$symb);
1303: } elsif ($env{'form.command'} eq 'change') {
1304: if (&release_slot($r,$symb,$env{'form.releaseslot'},1)) {
1305: &get_slot($r,$symb);
1306: }
1307: } else {
1308: $r->print("<p>Unknown command: ".$env{'form.command'}."</p>");
1309: }
1310: }
1311: &end_page($r);
1312: return OK;
1313: }
1314:
1315: 1;
1316: __END__
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