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2# WeBWorK mod_perl (c) 2000-2002 WeBWorK Project 2# WeBWorK mod_perl (c) 2000-2002 WeBWorK Project
3# $Id$ 3# $Id$
4################################################################################ 4################################################################################
5 5
6package WeBWorK::ContentGenerator::Problem; 6package WeBWorK::ContentGenerator::Problem;
7use base qw(WeBWorK::ContentGenerator);
7 8
8=head1 NAME 9=head1 NAME
9 10
10WeBWorK::ContentGenerator::Problem - Allow a student to interact with a problem. 11WeBWorK::ContentGenerator::Problem - Allow a student to interact with a problem.
11 12
12=cut 13=cut
13 14
14use strict; 15use strict;
15use warnings; 16use warnings;
16use base qw(WeBWorK::ContentGenerator);
17use CGI qw(); 17use CGI qw();
18use File::Temp qw(tempdir); 18use File::Temp qw(tempdir);
19use WeBWorK::Form; 19use WeBWorK::Form;
20use WeBWorK::PG; 20use WeBWorK::PG;
21use WeBWorK::PG::IO; 21use WeBWorK::PG::IO;
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35# 35#
36# AnSwEr# - answer blanks in problem 36# AnSwEr# - answer blanks in problem
37# 37#
38# redisplay - name of the "Redisplay Problem" button 38# redisplay - name of the "Redisplay Problem" button
39# submitAnswers - name of "Submit Answers" button 39# submitAnswers - name of "Submit Answers" button
40# checkAnswers - name of the "Check Answers" button
41# previewAnswers - name of the "Preview Answers" button
40# 42#
41############################################################ 43############################################################
42 44
43sub pre_header_initialize { 45sub pre_header_initialize {
44 my ($self, $setName, $problemNumber) = @_; 46 my ($self, $setName, $problemNumber) = @_;
47 my $r = $self->{r};
45 my $courseEnv = $self->{ce}; 48 my $courseEnv = $self->{ce};
46 my $r = $self->{r}; 49 my $db = $self->{db};
47 my $userName = $r->param('user'); 50 my $userName = $r->param('user');
48 my $effectiveUserName = $r->param('effectiveUser'); 51 my $effectiveUserName = $r->param('effectiveUser');
49 52
50 ##### database setup #####
51
52 my $cldb = WeBWorK::DB::Classlist->new($courseEnv);
53 my $wwdb = WeBWorK::DB::WW->new($courseEnv);
54 my $authdb = WeBWorK::DB::Auth->new($courseEnv);
55
56 my $user = $cldb->getUser($userName); 53 my $user = $db->getUser($userName);
57 my $effectiveUser = $cldb->getUser($effectiveUserName); 54 my $effectiveUser = $db->getUser($effectiveUserName);
58 my $set = $wwdb->getSet($effectiveUserName, $setName); 55 my $set = $db->getGlobalUserSet($effectiveUserName, $setName);
59 my $problem = $wwdb->getProblem($effectiveUserName, $setName, $problemNumber); 56 my $problem = $db->getGlobalUserProblem($effectiveUserName, $setName, $problemNumber);
60 my $psvn = $wwdb->getPSVN($effectiveUserName, $setName); 57 my $psvn = $set->psvn();
61 my $permissionLevel = $authdb->getPermissions($userName); 58 my $permissionLevel = $db->getPermissionLevel($userName)->permission();
62
63 $self->{cldb} = $cldb;
64 $self->{wwdb} = $wwdb;
65 $self->{authdb} = $authdb;
66 59
67 $self->{userName} = $userName; 60 $self->{userName} = $userName;
68 $self->{user} = $user; 61 $self->{user} = $user;
69 $self->{effectiveUser} = $effectiveUser; 62 $self->{effectiveUser} = $effectiveUser;
70 $self->{set} = $set; 63 $self->{set} = $set;
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195} 188}
196 189
197sub path { 190sub path {
198 my $self = shift; 191 my $self = shift;
199 my $args = $_[-1]; 192 my $args = $_[-1];
200 my $setName = $self->{set}->id; 193 my $setName = $self->{set}->set_id;
201 my $problemNumber = $self->{problem}->id; 194 my $problemNumber = $self->{problem}->problem_id;
202 195
203 my $ce = $self->{ce}; 196 my $ce = $self->{ce};
204 my $root = $ce->{webworkURLs}->{root}; 197 my $root = $ce->{webworkURLs}->{root};
205 my $courseName = $ce->{courseName}; 198 my $courseName = $ce->{courseName};
206 return $self->pathMacro($args, 199 return $self->pathMacro($args,
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211 ); 204 );
212} 205}
213 206
214sub siblings { 207sub siblings {
215 my $self = shift; 208 my $self = shift;
216 my $setName = $self->{set}->id; 209 my $setName = $self->{set}->set_id;
217 my $problemNumber = $self->{problem}->id; 210 my $problemNumber = $self->{problem}->problem_id;
218 211
219 my $ce = $self->{ce}; 212 my $ce = $self->{ce};
213 my $db = $self->{db};
220 my $root = $ce->{webworkURLs}->{root}; 214 my $root = $ce->{webworkURLs}->{root};
221 my $courseName = $ce->{courseName}; 215 my $courseName = $ce->{courseName};
222 216
223 print CGI::strong("Problems"), CGI::br(); 217 print CGI::strong("Problems"), CGI::br();
224 218
225 my $wwdb = $self->{wwdb};
226 my $effectiveUser = $self->{r}->param("effectiveUser"); 219 my $effectiveUser = $self->{r}->param("effectiveUser");
227 my @problems; 220 my @problems;
228 push @problems, $wwdb->getProblem($effectiveUser, $setName, $_) 221 push @problems, $db->getGlobalUserProblem($effectiveUser, $setName, $_)
229 foreach ($wwdb->getProblems($effectiveUser, $setName)); 222 foreach ($db->listUserProblems($effectiveUser, $setName));
230 foreach my $problem (sort { $a->id <=> $b->id } @problems) { 223 foreach my $problem (sort { $a->problem_id <=> $b->problem_id } @problems) {
231 print CGI::a({-href=>"$root/$courseName/$setName/".$problem->id."/?" 224 print CGI::a({-href=>"$root/$courseName/$setName/".$problem->problem_id."/?"
232 . $self->url_authen_args . "&displayMode=" . $self->{displayMode}}, 225 . $self->url_authen_args . "&displayMode=" . $self->{displayMode}},
233 "Problem ".$problem->id), CGI::br(); 226 "Problem ".$problem->problem_id), CGI::br();
234 } 227 }
235} 228}
236 229
237sub nav { 230sub nav {
238 my $self = shift; 231 my $self = shift;
239 my $args = $_[-1]; 232 my $args = $_[-1];
240 my $setName = $self->{set}->id; 233 my $setName = $self->{set}->set_id;
241 my $problemNumber = $self->{problem}->id; 234 my $problemNumber = $self->{problem}->problem_id;
242 235
243 my $ce = $self->{ce}; 236 my $ce = $self->{ce};
237 my $db = $self->{db};
244 my $root = $ce->{webworkURLs}->{root}; 238 my $root = $ce->{webworkURLs}->{root};
245 my $courseName = $ce->{courseName}; 239 my $courseName = $ce->{courseName};
246 240
247 my $wwdb = $self->{wwdb}; 241 my $wwdb = $self->{wwdb};
248 my $effectiveUser = $self->{r}->param("effectiveUser"); 242 my $effectiveUser = $self->{r}->param("effectiveUser");
249 my $tail = "&displayMode=".$self->{displayMode}; 243 my $tail = "&displayMode=".$self->{displayMode};
250 244
251 my @links = ("Problem List" , "$root/$courseName/$setName", "navProbList"); 245 my @links = ("Problem List" , "$root/$courseName/$setName", "navProbList");
252 246
253 my $prevProblem = $wwdb->getProblem($effectiveUser, $setName, $problemNumber-1); 247 my $prevProblem = $db->getGlobalUserProblem($effectiveUser, $setName, $problemNumber-1);
254 my $nextProblem = $wwdb->getProblem($effectiveUser, $setName, $problemNumber+1); 248 my $nextProblem = $db->getGlobalUserProblem($effectiveUser, $setName, $problemNumber+1);
255 unshift @links, "Previous Problem" , ($prevProblem 249 unshift @links, "Previous Problem" , ($prevProblem
256 ? "$root/$courseName/$setName/".$prevProblem->id 250 ? "$root/$courseName/$setName/".$prevProblem->problem_id
257 : "") , "navPrev"; 251 : "") , "navPrev";
258 push @links, "Next Problem" , ($nextProblem 252 push @links, "Next Problem" , ($nextProblem
259 ? "$root/$courseName/$setName/".$nextProblem->id 253 ? "$root/$courseName/$setName/".$nextProblem->problem_id
260 : "") , "navNext"; 254 : "") , "navNext";
261 255
262 return $self->navMacro($args, $tail, @links); 256 return $self->navMacro($args, $tail, @links);
263} 257}
264 258
265sub title { 259sub title {
266 my $self = shift; 260 my $self = shift;
267 my $setName = $self->{set}->id; 261 my $setName = $self->{set}->set_id;
268 my $problemNumber = $self->{problem}->id; 262 my $problemNumber = $self->{problem}->problem_id;
269 263
270 return "$setName : Problem $problemNumber"; 264 return "$setName : Problem $problemNumber";
271} 265}
272 266
273sub body { 267sub body {
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276 return CGI::p(CGI::font({-color=>"red"}, "This problem is not available because the problem set that contains it is not yet open.")) 270 return CGI::p(CGI::font({-color=>"red"}, "This problem is not available because the problem set that contains it is not yet open."))
277 unless $self->{isOpen}; 271 unless $self->{isOpen};
278 272
279 # unpack some useful variables 273 # unpack some useful variables
280 my $r = $self->{r}; 274 my $r = $self->{r};
281 my $wwdb = $self->{wwdb}; 275 my $db = $self->{db};
282 my $set = $self->{set}; 276 my $set = $self->{set};
283 my $problem = $self->{problem}; 277 my $problem = $self->{problem};
284 my $permissionLevel = $self->{permissionLevel}; 278 my $permissionLevel = $self->{permissionLevel};
285 my $submitAnswers = $self->{submitAnswers}; 279 my $submitAnswers = $self->{submitAnswers};
286 my $checkAnswers = $self->{checkAnswers}; 280 my $checkAnswers = $self->{checkAnswers};
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299 293
300 ##### answer processing ##### 294 ##### answer processing #####
301 295
302 # if answers were submitted: 296 # if answers were submitted:
303 if ($submitAnswers) { 297 if ($submitAnswers) {
298 # get a "pure" (unmerged) UserProblem to modify
299 my $pureProblem = $db->getUserProblem($problem->user_id, $problem->set_id, $problem->problem_id);
304 # store answers in DB for sticky answers 300 # store answers in DB for sticky answers
305 my %answersToStore; 301 my %answersToStore;
306 my %answerHash = %{ $pg->{answers} }; 302 my %answerHash = %{ $pg->{answers} };
307 $answersToStore{$_} = $answerHash{$_}->{original_student_ans} 303 $answersToStore{$_} = $answerHash{$_}->{original_student_ans}
308 foreach (keys %answerHash); 304 foreach (keys %answerHash);
309 my $answerString = encodeAnswers(%answersToStore, 305 my $answerString = encodeAnswers(%answersToStore,
310 @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }); 306 @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} });
307 $pureProblem->last_answer($answerString);
311 $problem->last_answer($answerString); 308 $problem->last_answer($answerString);
312 $wwdb->setProblem($problem); 309 $db->putUserProblem($pureProblem);
313 310
314 # store state in DB if it makes sense 311 # store state in DB if it makes sense
315 if ($will{recordAnswers}) { 312 if ($will{recordAnswers}) {
313 $problem->status($pg->{state}->{recorded_score});
316 $problem->attempted(1); 314 $problem->attempted(1);
317 $problem->status($pg->{state}->{recorded_score});
318 $problem->num_correct($pg->{state}->{num_of_correct_ans}); 315 $problem->num_correct($pg->{state}->{num_of_correct_ans});
319 $problem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 316 $problem->num_incorrect($pg->{state}->{num_of_incorrect_ans});
317 $pureProblem->status($pg->{state}->{recorded_score});
318 $pureProblem->attempted(1);
319 $pureProblem->num_correct($pg->{state}->{num_of_correct_ans});
320 $pureProblem->num_incorrect($pg->{state}->{num_of_incorrect_ans});
320 $wwdb->setProblem($problem); 321 $db->putUserProblem($pureProblem);
321 # write to the transaction log, just to make sure 322 # write to the transaction log, just to make sure
322 writeLog($self->{ce}, "transaction", 323 writeLog($self->{ce}, "transaction",
323 $problem->id."\t". 324 $problem->problem_id."\t".
324 $problem->set_id."\t". 325 $problem->set_id."\t".
325 $problem->login_id."\t". 326 $problem->user_id."\t".
326 $problem->source_file."\t". 327 $problem->source_file."\t".
327 $problem->value."\t". 328 $problem->value."\t".
328 $problem->max_attempts."\t". 329 $problem->max_attempts."\t".
329 $problem->problem_seed."\t". 330 $problem->problem_seed."\t".
330 $problem->status."\t". 331 $pureProblem->status."\t".
331 $problem->attempted."\t". 332 $pureProblem->attempted."\t".
332 $problem->last_answer."\t". 333 $pureProblem->last_answer."\t".
333 $problem->num_correct."\t". 334 $pureProblem->num_correct."\t".
334 $problem->num_incorrect 335 $pureProblem->num_incorrect
335 ); 336 );
336 } 337 }
337 } 338 }
338 # logging student answers 339 # logging student answers
339 my $pastAnswerLog = undef; 340 my $pastAnswerLog = undef;
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345 my $answerString = ""; 346 my $answerString = "";
346 my %answerHash = %{ $pg->{answers} }; 347 my %answerHash = %{ $pg->{answers} };
347 $answerString = $answerString . $answerHash{$_}->{original_student_ans}."\t" 348 $answerString = $answerString . $answerHash{$_}->{original_student_ans}."\t"
348 foreach (sort keys %answerHash); 349 foreach (sort keys %answerHash);
349 writeLog($self->{ce}, "pastAnswerList", 350 writeLog($self->{ce}, "pastAnswerList",
350 '|'.$problem->login_id. 351 '|'.$problem->user_id.
351 '|'.$problem->set_id. 352 '|'.$problem->set_id.
352 '|'.$problem->id.'|'."\t". 353 '|'.$problem->problem_id.'|'."\t".
353 time()."\t". 354 time()."\t".
354 $answerString, 355 $answerString,
355 356
356 ); 357 );
357 358
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464 #print feedback form 465 #print feedback form
465 print 466 print
466 CGI::start_form(-method=>"POST", -action=>$feedbackURL),"\n", 467 CGI::start_form(-method=>"POST", -action=>$feedbackURL),"\n",
467 $self->hidden_authen_fields,"\n", 468 $self->hidden_authen_fields,"\n",
468 CGI::hidden("module", __PACKAGE__),"\n", 469 CGI::hidden("module", __PACKAGE__),"\n",
469 CGI::hidden("set", $set->id),"\n", 470 CGI::hidden("set", $set->set_id),"\n",
470 CGI::hidden("problem", $problem->id),"\n", 471 CGI::hidden("problem", $problem->problem_id),"\n",
471 CGI::hidden("displayMode", $self->{displayMode}),"\n", 472 CGI::hidden("displayMode", $self->{displayMode}),"\n",
472 CGI::hidden("showOldAnswers", $will{showOldAnswers}),"\n", 473 CGI::hidden("showOldAnswers", $will{showOldAnswers}),"\n",
473 CGI::hidden("showCorrectAnswers", $will{showCorrectAnswers}),"\n", 474 CGI::hidden("showCorrectAnswers", $will{showCorrectAnswers}),"\n",
474 CGI::hidden("showHints", $will{showHints}),"\n", 475 CGI::hidden("showHints", $will{showHints}),"\n",
475 CGI::hidden("showSolutions", $will{showSolutions}),"\n", 476 CGI::hidden("showSolutions", $will{showSolutions}),"\n",
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483 484
484 print "\n", 485 print "\n",
485 CGI::start_form(-method=>"POST",-action=>$showPastAnswersURL,-target=>"information"),"\n", 486 CGI::start_form(-method=>"POST",-action=>$showPastAnswersURL,-target=>"information"),"\n",
486 $self->hidden_authen_fields,"\n", 487 $self->hidden_authen_fields,"\n",
487 CGI::hidden(-name => 'course', -value=>$courseName), "\n", 488 CGI::hidden(-name => 'course', -value=>$courseName), "\n",
488 CGI::hidden(-name => 'probNum', -value=>$problem->id), "\n", 489 CGI::hidden(-name => 'probNum', -value=>$problem->problem_id), "\n",
489 CGI::hidden(-name => 'setNum', -value=>$problem->set_id), "\n", 490 CGI::hidden(-name => 'setNum', -value=>$problem->set_id), "\n",
490 CGI::hidden(-name => 'User', -value=>$problem->login_id), "\n", 491 CGI::hidden(-name => 'User', -value=>$problem->user_id), "\n",
491 CGI::submit(-name => 'action', -value=>'Show Past Answers'), "\n", 492 CGI::submit(-name => 'action', -value=>'Show Past Answers'), "\n",
492 CGI::endform(); 493 CGI::endform();
493 494
494 495
495 496
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642 # so we'll just deal with each case explicitly here. there's some code 643 # so we'll just deal with each case explicitly here. there's some code
643 # duplication that can be dealt with later by abstracting out tth/dvipng/etc. 644 # duplication that can be dealt with later by abstracting out tth/dvipng/etc.
644 645
645 my $tex = $answerResult->{preview_latex_string}; 646 my $tex = $answerResult->{preview_latex_string};
646 647
647 return "" unless $tex; 648 return "" if $tex eq "";
648 649
649 if ($displayMode eq "plainText") { 650 if ($displayMode eq "plainText") {
650 return $tex; 651 return $tex;
651 } elsif ($displayMode eq "formattedText") { 652 } elsif ($displayMode eq "formattedText") {
652 my $tthCommand = $ce->{externalPrograms}->{tth} 653 my $tthCommand = $ce->{externalPrograms}->{tth}
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662 return $result; 663 return $result;
663 } elsif ($displayMode eq "images") { 664 } elsif ($displayMode eq "images") {
664 # how are we going to name this? 665 # how are we going to name this?
665 my $targetPathCommon = "/png/" 666 my $targetPathCommon = "/png/"
666 . $effectiveUser->id . "." 667 . $effectiveUser->id . "."
667 . $set->id . "." 668 . $set->set_id . "."
668 . $problem->id . "." 669 . $problem->problem_id . "."
669 . $answerResult->{ans_name} . ".png"; 670 . $answerResult->{ans_name} . ".png";
670 671
671 # figure out where to put things 672 # figure out where to put things
672 my $wd = tempdir("webwork-dvipng-XXXXXXXX", DIR => $ce->{courseDirs}->{html_temp}); 673 my $wd = tempdir("webwork-dvipng-XXXXXXXX", DIR => $ce->{courseDirs}->{html_temp});
673 my $latex = $ce->{externalPrograms}->{latex}; 674 my $latex = $ce->{externalPrograms}->{latex};
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676 # should use surePathToTmpFile, but we have to 677 # should use surePathToTmpFile, but we have to
677 # isolate it from the problem enivronment first 678 # isolate it from the problem enivronment first
678 my $targetURL = $ce->{courseURLs}->{html_temp} . $targetPathCommon; 679 my $targetURL = $ce->{courseURLs}->{html_temp} . $targetPathCommon;
679 680
680 # call dvipng to generate a preview 681 # call dvipng to generate a preview
681 warn $tex;
682 dvipng($wd, $latex, $dvipng, $tex, $targetPath); 682 dvipng($wd, $latex, $dvipng, $tex, $targetPath);
683 if (-e $targetPath) { 683 if (-e $targetPath) {
684 return "<img src=\"$targetURL\" alt=\"$tex\" />"; 684 return "<img src=\"$targetURL\" alt=\"$tex\" />";
685 } else { 685 } else {
686 return "<b>[math2img failed]</b>"; 686 return "<b>[math2img failed]</b>";
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