Annotation of loncom/homework/response.pm, revision 1.154
1.38 albertel 1: # The LearningOnline Network with CAPA
1.1 albertel 2: # various response type definitons response definition
1.53 albertel 3: #
1.154 ! www 4: # $Id: response.pm,v 1.153 2006/12/11 17:37:43 www Exp $
1.53 albertel 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: #
1.5 www 28:
1.1 albertel 29: package Apache::response;
30: use strict;
1.93 albertel 31: use Apache::lonlocal;
1.120 albertel 32: use Apache::lonnet;
1.153 www 33: use Apache::lonmaxima();
1.1 albertel 34:
1.57 harris41 35: BEGIN {
1.139 www 36: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
1.1 albertel 37: }
38:
1.13 albertel 39: sub start_response {
1.73 albertel 40: my ($parstack,$safeeval)=@_;
1.136 albertel 41: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
1.73 albertel 42: if ($#Apache::inputtags::import > -1) {
43: &Apache::lonxml::debug("Turning :$id: into");
44: $id = join('_',@Apache::inputtags::import).'_'.$id;
45: &Apache::lonxml::debug("New :$id:");
46: }
47: push (@Apache::inputtags::response,$id);
48: push (@Apache::inputtags::responselist,$id);
49: @Apache::inputtags::inputlist=();
1.101 albertel 50: if ($Apache::inputtags::part eq '' &&
51: !$Apache::lonhomework::ignore_response_errors) {
1.97 albertel 52: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
1.92 albertel 53: }
54: if ($Apache::inputtags::response_with_no_part &&
55: $Apache::inputtags::part ne '0') {
1.97 albertel 56: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
1.92 albertel 57: }
58: if ($Apache::inputtags::part eq '0') {
59: $Apache::inputtags::response_with_no_part=1;
60: }
1.73 albertel 61: return $id;
1.13 albertel 62: }
63:
64: sub end_response {
1.79 albertel 65: #pop @Apache::inputtags::response;
1.73 albertel 66: @Apache::inputtags::inputlist=();
67: return '';
1.13 albertel 68: }
69:
1.41 albertel 70: sub start_hintresponse {
1.73 albertel 71: my ($parstack,$safeeval)=@_;
1.136 albertel 72: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
1.123 albertel 73: push (@Apache::inputtags::hint,$id);
74: push (@Apache::inputtags::hintlist,$id);
1.73 albertel 75: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
76: return $id;
1.41 albertel 77: }
78:
79: sub end_hintresponse {
1.123 albertel 80: pop @Apache::inputtags::hint;
1.73 albertel 81: if (defined($Apache::inputtags::paramstack[-1])) {
82: %Apache::inputtags::params=
83: @{ pop(@Apache::inputtags::paramstack) };
84: }
85: return '';
1.41 albertel 86: }
87:
1.99 albertel 88: my @randomseeds;
89: sub pushrandomnumber {
90: my $rand_alg=&Apache::lonnet::get_rand_alg();
91: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
92: $rand_alg eq '64bit2') {
93: # do nothing
94: } else {
95: my @seed=&Math::Random::random_get_seed();
1.127 albertel 96: push(@randomseeds,\@seed);
1.99 albertel 97: }
1.127 albertel 98: &Apache::response::setrandomnumber(@_);
1.99 albertel 99: }
100: sub poprandomnumber {
101: my $rand_alg=&Apache::lonnet::get_rand_alg();
102: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
103: $rand_alg eq '64bit2') {
104: return;
105: }
106: my $seed=pop(@randomseeds);
107: if ($seed) {
108: &Math::Random::random_set_seed(@$seed);
109: } else {
110: &Apache::lonxml::error("Unable to restore random algorithm.");
111: }
112: }
1.117 albertel 113:
1.26 albertel 114: sub setrandomnumber {
1.127 albertel 115: my ($ignore_id2) = @_;
1.73 albertel 116: my $rndseed;
1.88 albertel 117: $rndseed=&Apache::structuretags::setup_rndseed();
118: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
1.73 albertel 119: &Apache::lonxml::debug("randseed $rndseed");
120: # $rndseed=unpack("%32i",$rndseed);
1.99 albertel 121: my $rand_alg=&Apache::lonnet::get_rand_alg();
1.126 albertel 122: my ($rndmod,$rndmod2);
1.119 albertel 123:
124: my ($id1,$id2,$shift_amt);
125: if ($Apache::lonhomework::parsing_a_problem) {
126: $id1=$Apache::inputtags::part;
127: if (defined($Apache::inputtags::response[-1])) {
128: $id2=$Apache::inputtags::response[-1];
129: }
130: $shift_amt=scalar(@Apache::inputtags::responselist);
131: } elsif ($Apache::lonhomework::parsing_a_task) {
1.141 albertel 132: $id1=&Apache::bridgetask::get_dim_id();
133: if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
134: $id2=$Apache::bridgetask::instance{$id1}[-1];
1.142 albertel 135: $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
136: } else {
137: $shift_amt=0;
1.119 albertel 138: }
139: }
140: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
1.99 albertel 141: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
142: $rand_alg eq '64bit2') {
1.119 albertel 143: $rndmod=(&Apache::lonnet::numval($id1) << 10);
144: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
1.110 albertel 145: } elsif ($rand_alg eq '64bit3') {
1.119 albertel 146: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
147: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
1.126 albertel 148: } elsif ($rand_alg eq '64bit4') {
1.119 albertel 149: my $shift=(4*$shift_amt)%30;
150: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
151: if (defined($id2)) {
152: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
1.110 albertel 153: }
1.126 albertel 154: } else {
155: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
1.99 albertel 156: }
1.127 albertel 157:
1.99 albertel 158: if ($rndseed =~/([,:])/) {
159: my $char=$1;
160: use integer;
161: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
162: $num1+=$rndmod;
1.126 albertel 163: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
1.109 albertel 164: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
1.99 albertel 165: $rndseed=$num1.$char.$num2;
166: } else {
1.74 albertel 167: $rndseed+=$rndmod;
1.109 albertel 168: if($Apache::lonnet::_64bit) {
169: use integer;
170: $rndseed=(($rndseed<<32)>>32);
171: }
1.74 albertel 172: }
1.111 albertel 173: &Apache::lonxml::debug("randseed $rndmod $rndseed");
1.74 albertel 174: &Apache::lonnet::setup_random_from_rndseed($rndseed);
1.73 albertel 175: return '';
1.26 albertel 176: }
177:
1.7 www 178: sub meta_parameter_write {
1.38 albertel 179: my ($name,$type,$default,$display)=@_;
1.41 albertel 180: my $partref=$Apache::inputtags::part;
181: my $result='<parameter part="'.$Apache::inputtags::part.'"';
182: if (defined($Apache::inputtags::response[-1])) {
1.73 albertel 183: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
184: $partref.='_'.$Apache::inputtags::response[-1];
1.41 albertel 185: }
186: $result.= ' name="'.$name.'"'.
187: ' type="'.$type.'"'.
1.89 albertel 188: (defined($default)?' default="'.$default.'"':'').
189: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
1.41 albertel 190: .'></parameter>'
191: ."\n";
192: return $result;
1.33 www 193: }
194:
195: sub meta_package_write {
196: my $name=shift;
1.41 albertel 197: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
198: if(defined($Apache::inputtags::response[-1])) {
1.73 albertel 199: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
1.41 albertel 200: }
201: $result.=' package="'.$name.'"></parameter>'."\n";
202: return $result;
1.7 www 203: }
204:
205: sub meta_stores_write {
1.10 www 206: my ($name,$type,$display)=@_;
1.41 albertel 207: my $partref=$Apache::inputtags::part;
208: my $result = '<stores part="'.$Apache::inputtags::part.'"';
209: if (defined($Apache::inputtags::response[-1])) {
1.73 albertel 210: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
211: $partref.='_'.$Apache::inputtags::response[-1];
1.41 albertel 212: }
213: $result.= ' name="'.$name.'"'.
214: ' type="'.$type.'"'.
215: ' display="'.$display.' [Part: '.$partref.']"'.
216: "></stores>\n";
1.7 www 217: }
218:
219: sub mandatory_part_meta {
220: #
221: # Autogenerate metadata for mandatory
222: # input (from RAT or lonparmset) and
223: # output (to lonspreadsheet)
224: # of each part
225: #
1.73 albertel 226: return
1.34 www 227: # &meta_parameter_write('opendate','date_start','',
228: # 'Opening Date').
229: # &meta_parameter_write('duedate','date_end','',
230: # 'Due Date').
231: # &meta_parameter_write('answerdate','date_start','',
232: # 'Show Answer Date').
233: # &meta_parameter_write('weight','int_zeropos','',
234: # 'Available Points').
235: # &meta_parameter_write('maxtries','int_pos','',
236: # 'Maximum Number of Tries').
1.73 albertel 237: &meta_package_write('part').
238: &meta_stores_write('solved','string',
239: 'Problem Status').
240: &meta_stores_write('tries','int_zeropos',
241: 'Number of Attempts').
242: &meta_stores_write('awarded','float',
243: 'Partial Credit Factor');
1.7 www 244: #
245: # Note: responseid-specific data 'submission' and 'awarddetail'
246: # not available to spreadsheet -> skip here
247: #
1.86 albertel 248: }
249:
250: sub meta_part_order {
251: if (@Apache::inputtags::partlist) {
252: my @parts=@Apache::inputtags::partlist;
253: shift(@parts);
1.100 albertel 254: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
1.86 albertel 255: } else {
1.100 albertel 256: return '<partorder>0</partorder>'."\n";
257: }
258: }
259:
260: sub meta_response_order {
261: if (@Apache::inputtags::responselist) {
262: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
263: '</responseorder>'."\n";
1.86 albertel 264: }
1.14 albertel 265: }
266:
1.15 albertel 267: sub check_for_previous {
1.73 albertel 268: my ($curresponse,$partid,$id) = @_;
269: my %previous;
270: $previous{'used'} = 0;
271: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
1.98 albertel 272: if ($key =~ /resource\.$partid\.$id\.submission$/) {
1.73 albertel 273: &Apache::lonxml::debug("Trying $key");
274: my $pastresponse=$Apache::lonhomework::history{$key};
275: if ($pastresponse eq $curresponse) {
276: $previous{'used'} = 1;
277: my $history;
278: if ( $key =~ /^(\d+):/ ) {
279: $history=$1;
280: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
281: $previous{'last'}='0';
282: push(@{ $previous{'version'} },$history);
283: } else {
284: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
285: $previous{'last'}='1';
286: }
287: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
288: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
289: }
1.32 albertel 290: }
1.73 albertel 291: }
292: &Apache::lonhomework::showhash(%previous);
293: return %previous;
1.54 albertel 294: }
295:
296: sub handle_previous {
1.73 albertel 297: my ($previous,$ad)=@_;
298: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
299: if ($$previous{'last'}) {
300: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
1.107 albertel 301: push(@Apache::inputtags::previous_version,$$previous{'version'});
302: } elsif ($Apache::lonhomework::type ne 'survey') {
1.73 albertel 303: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
1.107 albertel 304: push(@Apache::inputtags::previous_version,$$previous{'version'});
1.73 albertel 305: }
1.54 albertel 306: }
1.44 albertel 307: }
308:
1.45 albertel 309: sub view_or_modify {
1.149 albertel 310: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.73 albertel 311: my $myself=0;
1.120 albertel 312: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
1.73 albertel 313: $myself=1;
314: }
315: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
316: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
317: if ($mgr) { return "M"; }
318: if ($vgr) { return "V"; }
319: if ($myself) { return "V"; }
320: return '';
1.45 albertel 321: }
322:
1.44 albertel 323: sub start_dataresponse {
1.73 albertel 324: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
325: my $id = &Apache::response::start_response($parstack,$safeeval);
326: my $result;
327: if ($target eq 'web') {
328: $result = $token->[2]->{'display'}.':';
329: } elsif ($target eq 'meta') {
330: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
331: $token->[2]->{'type'},
332: $token->[2]->{'display'});
333: $result .= &Apache::response::meta_package_write('dataresponse');
334: }
335: return $result;
1.44 albertel 336: }
337:
338: sub end_dataresponse {
1.73 albertel 339: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
340: my $result;
341: if ( $target eq 'web' ) {
342: } elsif ($target eq 'grade' ) {
1.120 albertel 343: if ( defined $env{'form.submitted'}) {
1.149 albertel 344: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
1.73 albertel 345: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
346: if ($allowed) {
1.94 albertel 347: &Apache::response::setup_params('dataresponse',$safeeval);
1.73 albertel 348: my $partid = $Apache::inputtags::part;
349: my $id = $Apache::inputtags::response['-1'];
1.120 albertel 350: my $response = $env{'form.HWVAL_'.$id};
1.73 albertel 351: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
352: if ( $response =~ /[^\s]/) {
353: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
354: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
355: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
356: }
357: } else {
358: $result='Not Permitted to change values.'
359: }
1.45 albertel 360: }
1.73 albertel 361: }
362: &Apache::response::end_response;
363: return $result;
1.3 albertel 364: }
365:
1.129 albertel 366: sub start_customresponse {
1.128 albertel 367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
368: my $id = &Apache::response::start_response($parstack,$safeeval);
1.129 albertel 369: push(@Apache::lonxml::namespace,'customresponse');
1.128 albertel 370: my $result;
1.129 albertel 371: undef($Apache::response::custom_answer);
1.128 albertel 372: &Apache::lonxml::register('Apache::response',('answer'));
373: if ($target eq 'web') {
374: if ( &Apache::response::show_answer() ) {
375: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
376: $safeeval);
1.152 albertel 377: $Apache::inputtags::answertxt{$id}=[$answer];
1.128 albertel 378: }
379: } elsif ($target eq 'edit') {
380: $result.=&Apache::edit::tag_start($target,$token);
381: $result.=&Apache::edit::text_arg('String to display for answer:',
1.145 albertel 382: 'answerdisplay',$token);
1.128 albertel 383: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
384: } elsif ($target eq 'modified') {
385: my $constructtag;
386: $constructtag=&Apache::edit::get_new_args($token,$parstack,
387: $safeeval,'answerdisplay');
388: if ($constructtag) {
389: $result = &Apache::edit::rebuild_tag($token);
390: $result.=&Apache::edit::handle_insert();
391: }
392: } elsif ($target eq 'answer' || $target eq 'grade') {
393: &Apache::response::reset_params();
394: } elsif ($target eq 'meta') {
1.129 albertel 395: $result .= &Apache::response::meta_package_write('customresponse');
1.128 albertel 396: }
397: return $result;
398: }
399:
1.129 albertel 400: sub end_customresponse {
1.128 albertel 401: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
402: my $result;
403: my $part=$Apache::inputtags::part;
404: my $id=$Apache::inputtags::response[-1];
405: if ( $target eq 'grade' && &Apache::response::submitted() ) {
406: my $response = &Apache::response::getresponse();
1.146 albertel 407: if ($Apache::lonhomework::type eq 'exam' ||
408: &Apache::response::submitted('scantron')) {
409: &Apache::response::scored_response($part,$id);
410: } elsif ( $response =~ /[^\s]/ &&
411: $Apache::response::custom_answer_type eq 'loncapa/perl') {
1.128 albertel 412: if (!$Apache::lonxml::default_homework_loaded) {
413: &Apache::lonxml::default_homework_load($safeeval);
414: }
415: my %previous = &Apache::response::check_for_previous($response,
416: $part,$id);
417: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
418: $response;
419: my $error;
1.129 albertel 420: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
1.128 albertel 421: $response;
422:
1.129 albertel 423: my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval);
1.128 albertel 424: if (!&Apache::inputtags::valid_award($award)) {
425: $error = $award;
426: $award = 'ERROR';
427: }
428: &Apache::response::handle_previous(\%previous,$award);
429: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
430: $award;
431: if ($error) {
432: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
433: $error;
434: }
435: }
1.146 albertel 436: } elsif ( $target eq 'answer') {
437: $result = &Apache::response::answer_header('customresponse');
438: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
439: $safeeval);
440: if ($env{'form.answer_output_mode'} ne 'tex') {
441: $answer = '<b>'.$answer.'</b>';
442: }
443: $result .= &Apache::response::answer_part('customresponse',$answer);
444: $result .= &Apache::response::answer_footer('customresponse');
445: }
446: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
447: $target eq 'tex' || $target eq 'analyze') {
448: &Apache::lonxml::increment_counter(&Apache::response::repetition());
1.128 albertel 449: }
450: pop(@Apache::lonxml::namespace);
451: &Apache::lonxml::deregister('Apache::response',('answer'));
452: &Apache::response::end_response();
453: return $result;
454: }
455:
1.140 www 456:
1.139 www 457: sub start_mathresponse {
1.140 www 458: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
459: my $id = &Apache::response::start_response($parstack,$safeeval);
460: push(@Apache::lonxml::namespace,'mathresponse');
1.139 www 461: my $result;
1.140 www 462: undef($Apache::response::custom_answer);
463: &Apache::lonxml::register('Apache::response',('answer'));
464: if ($target eq 'web') {
465: if ( &Apache::response::show_answer() ) {
466: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
467: $safeeval);
1.152 albertel 468: $Apache::inputtags::answertxt{$id}=[$answer];
1.140 www 469: }
470: } elsif ($target eq 'edit') {
471: $result.=&Apache::edit::tag_start($target,$token);
472: $result.=&Apache::edit::text_arg('String to display for answer:',
473: 'answerdisplay',$token);
1.150 www 474: $result.=&Apache::edit::select_arg('Algebra System:',
475: 'cas',
476: ['maxima'],
477: $token);
478: $result.=&Apache::edit::text_arg('Argument Array:',
479: 'args',$token);
1.140 www 480: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
481: } elsif ($target eq 'modified') {
482: my $constructtag;
483: $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.153 www 484: $safeeval,'answerdisplay','cas','args');
1.140 www 485: if ($constructtag) {
486: $result = &Apache::edit::rebuild_tag($token);
487: $result.=&Apache::edit::handle_insert();
488: }
489: } elsif ($target eq 'answer' || $target eq 'grade') {
490: &Apache::response::reset_params();
1.153 www 491: my $args_ref= \%{$safeeval->varglob('LONCAPA::mathresponse_args')};
492: undef(%{ $args_ref });
493: $$args_ref{'cas'}=$token->[2]{'cas'};
1.154 ! www 494: if ($token->[2]{'args'}=~/\$/) {
! 495: $$args_ref{'args'}=&Apache::run::run($token->[2]{'args'},$safeeval);
! 496: } elsif ($token->[2]{'args'}=~/\@/) {
! 497: $$args_ref{'args'}=&Apache::run::run('join(",",'.$token->[2]{'args'}.')',$safeeval);
! 498: } else {
! 499: $$args_ref{'args'}=$token->[2]{'args'};
! 500: }
1.140 www 501: } elsif ($target eq 'meta') {
502: $result .= &Apache::response::meta_package_write('mathresponse');
1.139 www 503: }
504: return $result;
505: }
506:
507: sub end_mathresponse {
1.140 www 508: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
509: my $result;
510: my $part=$Apache::inputtags::part;
511: my $id=$Apache::inputtags::response[-1];
512: if ( $target eq 'grade' && &Apache::response::submitted() ) {
513: my $response = &Apache::response::getresponse();
1.150 www 514: if ( $response =~ /[^\s]/ ) {
1.140 www 515: if (!$Apache::lonxml::default_homework_loaded) {
516: &Apache::lonxml::default_homework_load($safeeval);
517: }
518: my %previous = &Apache::response::check_for_previous($response,
519: $part,$id);
520: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
521: $response;
522: my $error;
1.153 www 523: my $args_ref= \%{$safeeval->varglob('LONCAPA::mathresponse_args')};
524: my $award;
525: if ($$args_ref{'cas'} eq 'maxima') {
526: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer,$response,$$args_ref{'args'});
527: }
1.140 www 528: if (!&Apache::inputtags::valid_award($award)) {
1.151 albertel 529: $error = $award;
530: $award = 'ERROR';
1.140 www 531: }
532: &Apache::response::handle_previous(\%previous,$award);
533: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
534: $award;
535: if ($error) {
536: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
537: $error;
538: }
539: }
540: }
541: pop(@Apache::lonxml::namespace);
542: &Apache::lonxml::deregister('Apache::response',('answer'));
543: &Apache::response::end_response();
544: return $result;
1.139 www 545: }
546:
1.140 www 547:
1.128 albertel 548: sub start_answer {
549: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
550: my $result;
1.129 albertel 551: $Apache::response::custom_answer=
1.128 albertel 552: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser);
1.129 albertel 553: $Apache::response::custom_answer_type=
1.128 albertel 554: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval));
1.129 albertel 555: $Apache::response::custom_answer_type =~ s/\s+//g;
1.128 albertel 556: if ($target eq "edit" ) {
557: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
558: $result.=&Apache::edit::editfield($token->[1],
1.129 albertel 559: $Apache::response::custom_answer,
1.128 albertel 560: '',80,4);
561: } elsif ( $target eq "modified" ) {
562: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
563: }
564: return $result;
565: }
566:
567: sub end_answer {
568: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
569: if ($target eq 'edit' ) {
570: return &Apache::edit::end_table();
571: }
572: }
573:
1.83 albertel 574: sub decide_package {
575: my ($tagstack)=@_;
576: my $package;
577: if ($$tagstack[-1] eq 'parameter') {
578: $package='part';
579: } else {
580: my $i=-1;
581: while (defined($$tagstack[$i])) {
582: if ($$tagstack[$i] =~ /(response|hint)$/) {
583: $package=$$tagstack[$i];
584: last;
585: }
586: $i--;
587: }
588: }
589: return $package;
590: }
591:
1.3 albertel 592: sub start_responseparam {
1.73 albertel 593: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
594: my $result='';
595: if ($target eq 'meta') {
596: $result = &meta_parameter_write($token->[2]->{'name'},
597: $token->[2]->{'type'},
598: $token->[2]->{'default'},
599: $token->[2]->{'description'});
600: } elsif ($target eq 'edit') {
601: $result.=&Apache::edit::tag_start($target,$token);
1.83 albertel 602: my $optionlist;
603: my $package=&decide_package($tagstack);
604: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
605: if ($key =~ /^\Q$package\E&(.*)&display$/) {
606: $optionlist.='<option value="'.$1.'">'.
607: $Apache::lonnet::packagetab{$key}.'</option>';
608: }
609: }
610: if (defined($optionlist)) {
611: $result.='Use template: <select name="'.
612: &Apache::edit::html_element_name('parameter_package').'">'.
613: '<option value=""></option>'.$optionlist.'</select><br />';
614: }
1.73 albertel 615: $result.=&Apache::edit::text_arg('Name:','name',$token).
616: &Apache::edit::text_arg('Type:','type',$token).
617: &Apache::edit::text_arg('Description:','description',$token).
618: &Apache::edit::text_arg('Default:','default',$token).
619: "</td></tr>";
620: $result.=&Apache::edit::end_table;
621: } elsif ($target eq 'modified') {
1.83 albertel 622: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
623: $safeeval,'name','type',
624: 'description','default');
625: my $element=&Apache::edit::html_element_name('parameter_package');
1.120 albertel 626: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
627: my $name=$env{"form.$element"};
1.83 albertel 628: my $tag=&decide_package($tagstack);
629: $token->[2]->{'name'}=$name;
630: $token->[2]->{'type'}=
631: $Apache::lonnet::packagetab{"$tag&$name&type"};
632: $token->[2]->{'description'}=
633: $Apache::lonnet::packagetab{"$tag&$name&display"};
634: $token->[2]->{'default'}=
635: $Apache::lonnet::packagetab{"$tag&$name&default"};
636: $constructtag=1;
637: }
1.73 albertel 638: if ($constructtag) {
639: $result = &Apache::edit::rebuild_tag($token);
640: $result.=&Apache::edit::handle_insert();
641: }
642: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
643: $target eq 'tex' || $target eq 'analyze' ) {
1.120 albertel 644: if ($env{'request.state'} eq 'construct') {
1.73 albertel 645: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
646: my $default=&Apache::lonxml::get_param('default',$parstack,
647: $safeeval);
648: if ($name) {$Apache::inputtags::params{$name}=$default;}
649: }
1.52 albertel 650: }
1.73 albertel 651: return $result;
1.3 albertel 652: }
653:
654: sub end_responseparam {
1.73 albertel 655: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
656: if ($target eq 'edit') { return ('','no'); }
657: return '';
1.55 albertel 658: }
659:
660: sub start_parameter {
1.114 albertel 661: return &start_responseparam(@_);
1.55 albertel 662: }
663:
664: sub end_parameter {
1.114 albertel 665: return &end_responseparam(@_);
1.42 albertel 666: }
667:
1.67 albertel 668: sub reset_params {
669: %Apache::inputtags::params=();
670: }
671:
1.42 albertel 672: sub setup_params {
1.94 albertel 673: my ($tag,$safeeval) = @_;
1.42 albertel 674:
1.120 albertel 675: if ($env{'request.state'} eq 'construct') { return; }
1.73 albertel 676: my %paramlist=();
677: foreach my $key (keys(%Apache::lonnet::packagetab)) {
678: if ($key =~ /^$tag/) {
679: my ($package,$name) = split(/&/,$key);
680: $paramlist{$name}=1;
681: }
1.42 albertel 682: }
1.73 albertel 683: foreach my $key (keys(%paramlist)) {
684: my $entry= 'resource.'.$Apache::inputtags::part;
685: if (defined($Apache::inputtags::response[-1])) {
686: $entry.='_'.$Apache::inputtags::response[-1];
687: }
688: $entry.='.'.$key;
689: &Apache::lonxml::debug("looking for $entry");
690: my $value = &Apache::lonnet::EXT("$entry");
691: &Apache::lonxml::debug("$key has value :$value:");
692: if ($value eq 'con_lost' || $value =~ /^error:/) {
693: &Apache::lonxml::debug("using nothing");
694: $Apache::inputtags::params{$key}='';
695: } else {
1.94 albertel 696: my $string="{return qq\0".$value."\0}";
697: my $newvalue=&Apache::run::run($string,$safeeval,1);
698: if (defined($newvalue)) { $value=$newvalue; }
1.73 albertel 699: $Apache::inputtags::params{$key}=$value;
700: }
1.42 albertel 701: }
1.48 albertel 702: }
703:
1.132 albertel 704: {
705: my @answer_bits;
1.147 albertel 706: my $need_row_start;
1.132 albertel 707:
1.48 albertel 708: sub answer_header {
1.147 albertel 709: my ($type,$increment,$rows) = @_;
1.73 albertel 710: my $result;
1.120 albertel 711: if ($env{'form.answer_output_mode'} eq 'tex') {
1.132 albertel 712: undef(@answer_bits);
1.133 albertel 713: my $bit;
714: if ($Apache::lonhomework::type eq 'exam') {
715: $bit = ($Apache::lonxml::counter+$increment).') ';
716: } else {
717: $bit .= ' Answer for Part: \verb|'.
718: $Apache::inputtags::part.'| ';
719: }
720: push(@answer_bits,$bit);
1.73 albertel 721: } else {
1.147 albertel 722: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
1.132 albertel 723: $result = '<table border="1"><tr>';
724: if ($Apache::lonhomework::type eq 'exam') {
1.147 albertel 725: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
1.132 albertel 726: } else {
1.147 albertel 727: $result .= $td.&mt('Answer for Part: [_1]',
728: $Apache::inputtags::part).'</td>';
1.132 albertel 729: }
730: $result .= "\n";
1.147 albertel 731: $need_row_start = 0;
732: }
733: return $result;
734: }
735:
736: sub next_answer {
737: my ($type) = @_;
738: my $result;
739: if ($env{'form.answer_output_mode'} eq 'tex') {
740: # FIXME ... need to do something with tex mode
741: } else {
742: $result .= "</tr>";
743: $need_row_start = 1;
1.73 albertel 744: }
745: return $result;
1.48 albertel 746: }
747:
748: sub answer_part {
1.148 albertel 749: my ($type,$answer,$args) = @_;
1.73 albertel 750: my $result;
1.120 albertel 751: if ($env{'form.answer_output_mode'} eq 'tex') {
1.148 albertel 752: if (!$args->{'no_verbatim'}) {
753: my $to_use='|';
754: foreach my $value (32..126) {
755: my $char=pack('c',$value);
756: if ($answer !~ /\Q$char\E/) {
757: $to_use=$char;
758: last;
759: }
760: }
761: if ($answer ne '') {
762: $answer = '\verb'.$to_use.$answer.$to_use;
1.124 albertel 763: }
764: }
1.132 albertel 765: if ($answer ne '') {
1.148 albertel 766: push(@answer_bits,$answer);
1.132 albertel 767: }
1.73 albertel 768: } else {
1.147 albertel 769: if ($need_row_start) {
770: $result .= '<tr>';
771: $need_row_start = 0;
772: }
773: $result .= '<td>'.$answer.'</td>';
1.73 albertel 774: }
775: return $result;
1.48 albertel 776: }
777:
778: sub answer_footer {
1.73 albertel 779: my ($type) = @_;
780: my $result;
1.120 albertel 781: if ($env{'form.answer_output_mode'} eq 'tex') {
1.133 albertel 782: my $columns = scalar(@answer_bits);
1.134 albertel 783: $result = ' \vskip 0 mm \noindent \begin{tabular}{|'.'c|'x$columns.'}\hline ';
1.133 albertel 784: $result .= join(' & ',@answer_bits);
1.132 albertel 785: $result .= ' \\\\ \\hline \end{tabular} \vskip 0 mm ';
1.73 albertel 786: } else {
1.80 albertel 787: $result = '</tr></table>';
1.73 albertel 788: }
789: return $result;
1.1 albertel 790: }
1.2 albertel 791:
1.132 albertel 792: }
793:
1.62 albertel 794: sub showallfoils {
1.120 albertel 795: if (defined($env{'form.showallfoils'})) {
1.149 albertel 796: my ($symb)=&Apache::lonnet::whichuser();
1.120 albertel 797: if (($env{'request.state'} eq 'construct') ||
798: ($env{'user.adv'} && $symb eq '') ||
1.118 foxr 799: ($Apache::lonhomework::viewgrades) ) {
1.102 albertel 800: return 1;
801: }
1.73 albertel 802: }
1.108 albertel 803: if ($Apache::lonhomework::type eq 'survey') { return 1; }
1.102 albertel 804: return 0;
1.70 albertel 805: }
806:
807: sub getresponse {
1.90 albertel 808: my ($temp,$resulttype)=@_;
1.70 albertel 809: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
810: my $response;
811: if (!defined($temp)) {
812: $temp=1;
813: } else {
814: $formparm.=":$temp";
815: }
816: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
817: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
818: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
819: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
1.120 albertel 820: if ($env{'form.submitted'} eq 'scantron') {
1.71 albertel 821: my $part = $Apache::inputtags::part;
822: my $id = $Apache::inputtags::response[-1];
1.120 albertel 823: $response = $env{'scantron.'.($Apache::lonxml::counter+$temp-1).
1.70 albertel 824: '.answer'};
1.71 albertel 825: # save bubbled letter for later
826: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
827: $response;
1.90 albertel 828: if ($resulttype ne 'letter') {
1.104 albertel 829: if ($resulttype eq 'A is 1') {
1.105 albertel 830: $response = $let_to_num{$response}+1;
831: } else {
1.104 albertel 832: $response = $let_to_num{$response};
833: }
1.90 albertel 834: }
1.70 albertel 835: } else {
1.120 albertel 836: $response = $env{$formparm};
1.70 albertel 837: }
838: return $response;
1.62 albertel 839: }
1.71 albertel 840:
841: sub repetition {
842: my $id = $Apache::inputtags::part;
843: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1.121 albertel 844: if (!defined($weight) || ($weight eq '')) { $weight=1; }
1.125 albertel 845: my $repetition = int($weight/10);
846: if ($weight % 10 != 0) { $repetition++; }
1.72 albertel 847: return $repetition;
848: }
849:
850: sub scored_response {
851: my ($part,$id)=@_;
852: my $repetition=&repetition();
853: my $score=0;
854: for (my $i=0;$i<$repetition;$i++) {
1.125 albertel 855: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
1.72 albertel 856: my $increase=&Apache::response::getresponse($i+1);
857: if ($increase ne '') { $score+=$increase+1; }
858: }
859: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1.91 albertel 860: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1.72 albertel 861: my $pcr=$score/$weight;
862: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
863: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
864: 'ASSIGNED_SCORE';
1.71 albertel 865: return $repetition;
1.78 albertel 866: }
867:
868: sub whichorder {
869: my ($max,$randomize,$showall,$hash)=@_;
870: #&Apache::lonxml::debug("man $max randomize $randomize");
871: if (!defined(@{ $$hash{'names'} })) { return; }
872: my @names = @{ $$hash{'names'} };
873: my @whichopt =();
874: my (%top,@toplist,%bottom,@bottomlist);
875: if (!($showall || ($randomize eq 'no'))) {
876: my $current=0;
877: foreach my $name (@names) {
878: $current++;
879: if ($$hash{"$name.location"} eq 'top') {
880: $top{$name}=$current;
881: } elsif ($$hash{"$name.location"} eq 'bottom') {
882: $bottom{$name}=$current;
883: }
884: }
885: }
886: my $topcount=0;
887: my $bottomcount=0;
888: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
889: && ($#names > -1)) {
890: #&Apache::lonxml::debug("Have $#whichopt max is $max");
891: my $aopt;
892: if ($showall || ($randomize eq 'no')) {
893: $aopt=0;
894: } else {
895: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
896: }
897: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
898: $aopt=splice(@names,$aopt,1);
899: #&Apache::lonxml::debug("Picked $aopt");
900: if ($top{$aopt}) {
901: $toplist[$top{$aopt}]=$aopt;
902: $topcount++;
903: } elsif ($bottom{$aopt}) {
904: $bottomlist[$bottom{$aopt}]=$aopt;
905: $bottomcount++;
906: } else {
907: push (@whichopt,$aopt);
908: }
909: }
910: for (my $i=0;$i<=$#toplist;$i++) {
911: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
912: }
913: for (my $i=0;$i<=$#bottomlist;$i++) {
914: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
915: }
916: return @whichopt;
1.71 albertel 917: }
918:
1.85 albertel 919: sub show_answer {
920: my $part = $Apache::inputtags::part;
921: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
922: my $status = $Apache::inputtags::status[-1];
923: return ( ($award =~ /^correct/
924: && lc($Apache::lonhomework::problemstatus) ne 'no')
925: || $status eq "SHOW_ANSWER");
926: }
1.87 albertel 927:
928: sub analyze_store_foilgroup {
929: my ($shown,$attrs)=@_;
930: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
931: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
932: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
933: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
934: foreach my $attr (@$attrs) {
935: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
936: $Apache::response::foilgroup{"$name.".$attr};
937: }
938: }
939: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1.96 albertel 940: }
941:
942: sub check_if_computed {
943: my ($token,$parstack,$safeeval,$name)=@_;
944: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1.106 matthew 945: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1.96 albertel 946: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
947: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
948: }
1.87 albertel 949: }
950:
951: sub pick_foil_for_concept {
952: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
953: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
954: my @names = @{ $Apache::response::conceptgroup{'names'} };
955: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
956: my $name=$names[$pick];
957: push @{ $Apache::response::foilgroup{'names'} }, $name;
958: foreach my $attr (@$attrs) {
959: $Apache::response::foilgroup{"$name.".$attr} =
960: $Apache::response::conceptgroup{"$name.".$attr};
961: }
962: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
963: $Apache::response::foilgroup{"$name.concept"} = $concept;
964: &Apache::lonxml::debug("Selecting $name in $concept");
965: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
966: if ($target eq 'analyze') {
967: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
968: $concept);
969: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
970: $Apache::response::conceptgroup{'names'};
971: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
972: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
973: $name);
974: foreach my $attr (@$attrs) {
975: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
976: $Apache::response::conceptgroup{"$name.$attr"};
977: }
978: }
979: }
980: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
981: $hinthash->{"$part_id.concept.$concept"}=
982: $Apache::response::conceptgroup{'names'};
983:
984: }
985:
1.95 albertel 986: sub get_response_param {
987: my ($id,$name,$default)=@_;
988: my $parameter;
1.120 albertel 989: if ($env{'request.state'} eq 'construct' &&
1.95 albertel 990: defined($Apache::inputtags::params{$name})) {
991: $parameter=$Apache::inputtags::params{$name};
992: } else {
993: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
994: }
995: if (!defined($parameter) || $parameter eq '') {
996: $parameter = $default;
997: }
998: return $parameter;
999: }
1.87 albertel 1000:
1.113 albertel 1001: sub submitted {
1002: my ($who)=@_;
1003:
1004: # when scatron grading any submission is a submission
1.120 albertel 1005: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1.113 albertel 1006: # if the caller only cared if this was a scantron submission
1007: if ($who eq 'scantron') { return 0; }
1008: # if the Submit Answer button for this particular part was pressed
1009: my $partid=$Apache::inputtags::part;
1.120 albertel 1010: if (defined($env{'form.submit_'.$partid})) { return 1; }
1.122 albertel 1011: # Submit All button on a .page was pressed
1012: if (defined($env{'form.all_submit'})) { return 1; }
1.113 albertel 1013: # otherwise no submission occured
1014: return 0;
1015: }
1.117 albertel 1016:
1.130 albertel 1017: sub add_to_gradingqueue {
1.149 albertel 1018: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1.131 albertel 1019: if ( $courseid eq ''
1020: || $symb eq ''
1.135 albertel 1021: || $env{'request.state'} eq 'construct'
1022: || $Apache::lonhomework::type ne 'problem') {
1.131 albertel 1023: return;
1024: }
1.130 albertel 1025:
1026: my %queue_info = ( 'type' => 'problem',
1027: 'time' => time);
1028:
1029: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1030: $queue_info{'slot'}=
1031: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1032: }
1033:
1034: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1035: if ($result ne 'ok') {
1036: &Apache::lonxml::error("add_to_queue said $result");
1037: }
1038: }
1039:
1.117 albertel 1040: # basically undef and 0 (both false) mean that they still have work to do
1041: # and all true values mean that they can't do any more work
1042: #
1043: # a return of undef means it is unattempted
1044: # a return of 0 means it is attmpted and wrong but still has tries
1045: # a return of 1 means it is marked correct
1046: # a return of 2 means they have exceed maximum number of tries
1047: # a return of 3 means it after the answer date
1048: sub check_status {
1049: my ($id)=@_;
1.143 albertel 1050: if (!defined($id)) { $id=$Apache::inputtags::part; }
1.117 albertel 1051: my $curtime=&Apache::lonnet::EXT('system.time');
1052: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1053: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
1054: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1055: if ( $opendate && $curtime > $opendate &&
1056: $duedate && $curtime > $duedate &&
1057: $answerdate && $curtime > $answerdate) {
1058: return 3;
1059: }
1060: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1061: if ($status =~ /^correct/) { return 1; }
1062: if (!$status) { return undef; }
1063: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1064: if ($maxtries eq '') { $maxtries=2; }
1065: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1066: if ($curtries < $maxtries) { return 0; }
1067: return 2;
1068: }
1069:
1.1 albertel 1070: 1;
1071: __END__
1.38 albertel 1072:
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