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Avoid undefined due_date when problem is viewed from the library browser.
1 ################################################################################ 2 # WeBWorK Online Homework Delivery System 3 # Copyright © 2000-2003 The WeBWorK Project, http://openwebwork.sf.net/ 4 # $CVSHeader: webwork-modperl/lib/WeBWorK/ContentGenerator/Problem.pm,v 1.181 2005/08/24 20:22:32 jj Exp $ 5 # 6 # This program is free software; you can redistribute it and/or modify it under 7 # the terms of either: (a) the GNU General Public License as published by the 8 # Free Software Foundation; either version 2, or (at your option) any later 9 # version, or (b) the "Artistic License" which comes with this package. 10 # 11 # This program is distributed in the hope that it will be useful, but WITHOUT 12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 13 # FOR A PARTICULAR PURPOSE. See either the GNU General Public License or the 14 # Artistic License for more details. 15 ################################################################################ 16 17 package WeBWorK::ContentGenerator::Problem; 18 use base qw(WeBWorK::ContentGenerator); 19 20 =head1 NAME 21 22 WeBWorK::ContentGenerator::Problem - Allow a student to interact with a problem. 23 24 =cut 25 26 use strict; 27 use warnings; 28 use CGI qw(); 29 use File::Path qw(rmtree); 30 use WeBWorK::Debug; 31 use WeBWorK::Form; 32 use WeBWorK::PG; 33 use WeBWorK::PG::ImageGenerator; 34 use WeBWorK::PG::IO; 35 use WeBWorK::Utils qw(readFile writeLog writeCourseLog encodeAnswers decodeAnswers ref2string makeTempDirectory); 36 use WeBWorK::DB::Utils qw(global2user user2global findDefaults); 37 use URI::Escape; 38 39 use WeBWorK::Utils::Tasks qw(fake_set fake_problem); 40 41 ################################################################################ 42 # CGI param interface to this module (up-to-date as of v1.153) 43 ################################################################################ 44 45 # Standard params: 46 # 47 # user - user ID of real user 48 # key - session key 49 # effectiveUser - user ID of effective user 50 # 51 # Integration with PGProblemEditor: 52 # 53 # editMode - if set, indicates alternate problem source location. 54 # can be "temporaryFile" or "savedFile". 55 # 56 # sourceFilePath - path to file to be edited 57 # problemSeed - force problem seed to value 58 # success - success message to display 59 # failure - failure message to display 60 # 61 # Rendering options: 62 # 63 # displayMode - name of display mode to use 64 # 65 # showOldAnswers - request that last entered answer be shown (if allowed) 66 # showCorrectAnswers - request that correct answers be shown (if allowed) 67 # showHints - request that hints be shown (if allowed) 68 # showSolutions - request that solutions be shown (if allowed) 69 # 70 # Problem interaction: 71 # 72 # AnSwEr# - answer blanks in problem 73 # 74 # redisplay - name of the "Redisplay Problem" button 75 # submitAnswers - name of "Submit Answers" button 76 # checkAnswers - name of the "Check Answers" button 77 # previewAnswers - name of the "Preview Answers" button 78 79 ################################################################################ 80 # "can" methods 81 ################################################################################ 82 83 # Subroutines to determine if a user "can" perform an action. Each subroutine is 84 # called with the following arguments: 85 # 86 # ($self, $User, $EffectiveUser, $Set, $Problem) 87 88 # Note that significant parts of the "can" methods are lifted into the 89 # GatewayQuiz module. It isn't direct, however, because of the necessity 90 # of dealing with versioning there. 91 92 sub can_showOldAnswers { 93 #my ($self, $User, $EffectiveUser, $Set, $Problem) = @_; 94 95 return 1; 96 } 97 98 sub can_showCorrectAnswers { 99 my ($self, $User, $EffectiveUser, $Set, $Problem) = @_; 100 my $authz = $self->r->authz; 101 102 return 103 after($Set->answer_date) 104 || 105 $authz->hasPermissions($User->user_id, "show_correct_answers_before_answer_date") 106 ; 107 } 108 109 sub can_showHints { 110 #my ($self, $User, $EffectiveUser, $Set, $Problem) = @_; 111 112 return 1; 113 } 114 115 sub can_showSolutions { 116 my ($self, $User, $EffectiveUser, $Set, $Problem) = @_; 117 my $authz = $self->r->authz; 118 119 return 120 after($Set->answer_date) 121 || 122 $authz->hasPermissions($User->user_id, "show_solutions_before_answer_date") 123 ; 124 } 125 126 sub can_recordAnswers { 127 my ($self, $User, $EffectiveUser, $Set, $Problem, $submitAnswers) = @_; 128 my $authz = $self->r->authz; 129 my $thisAttempt = $submitAnswers ? 1 : 0; 130 if ($User->user_id ne $EffectiveUser->user_id) { 131 return $authz->hasPermissions($User->user_id, "record_answers_when_acting_as_student"); 132 } 133 if (before($Set->open_date)) { 134 return $authz->hasPermissions($User->user_id, "record_answers_before_open_date"); 135 } elsif (between($Set->open_date, $Set->due_date)) { 136 my $max_attempts = $Problem->max_attempts; 137 my $attempts_used = $Problem->num_correct + $Problem->num_incorrect + $thisAttempt; 138 if ($max_attempts == -1 or $attempts_used < $max_attempts) { 139 return $authz->hasPermissions($User->user_id, "record_answers_after_open_date_with_attempts"); 140 } else { 141 return $authz->hasPermissions($User->user_id, "record_answers_after_open_date_without_attempts"); 142 } 143 } elsif (between($Set->due_date, $Set->answer_date)) { 144 return $authz->hasPermissions($User->user_id, "record_answers_after_due_date"); 145 } elsif (after($Set->answer_date)) { 146 return $authz->hasPermissions($User->user_id, "record_answers_after_answer_date"); 147 } 148 } 149 150 sub can_checkAnswers { 151 my ($self, $User, $EffectiveUser, $Set, $Problem, $submitAnswers) = @_; 152 my $authz = $self->r->authz; 153 my $thisAttempt = $submitAnswers ? 1 : 0; 154 155 if (before($Set->open_date)) { 156 return $authz->hasPermissions($User->user_id, "check_answers_before_open_date"); 157 } elsif (between($Set->open_date, $Set->due_date)) { 158 my $max_attempts = $Problem->max_attempts; 159 my $attempts_used = $Problem->num_correct + $Problem->num_incorrect + $thisAttempt; 160 if ($max_attempts == -1 or $attempts_used < $max_attempts) { 161 return $authz->hasPermissions($User->user_id, "check_answers_after_open_date_with_attempts"); 162 } else { 163 return $authz->hasPermissions($User->user_id, "check_answers_after_open_date_without_attempts"); 164 } 165 } elsif (between($Set->due_date, $Set->answer_date)) { 166 return $authz->hasPermissions($User->user_id, "check_answers_after_due_date"); 167 } elsif (after($Set->answer_date)) { 168 return $authz->hasPermissions($User->user_id, "check_answers_after_answer_date"); 169 } 170 } 171 172 # Helper functions for calculating times 173 sub before { return time <= $_[0] } 174 sub after { return time >= $_[0] } 175 sub between { my $t = time; return $t > $_[0] && $t < $_[1] } 176 177 # Reset the default in some cases 178 sub set_showOldAnswers_default { 179 my ($self, $ce, $userName, $authz, $set) = @_; 180 # this person should always default to 0 181 $ce->{pg}->{options}->{showOldAnswers} = 0 182 unless ($authz->hasPermissions($userName, "can_show_old_answers_by_default")); 183 # we are after the due date, so default to not showing it 184 $ce->{pg}->{options}->{showOldAnswers} = 0 if $set->{due_date} && after($set->{due_date}); 185 } 186 187 ################################################################################ 188 # output utilities 189 ################################################################################ 190 191 # Note: the substance of attemptResults is lifted into GatewayQuiz.pm, 192 # with some changes to the output format 193 194 sub attemptResults { 195 my $self = shift; 196 my $pg = shift; 197 my $showAttemptAnswers = shift; 198 my $showCorrectAnswers = shift; 199 my $showAttemptResults = $showAttemptAnswers && shift; 200 my $showSummary = shift; 201 my $showAttemptPreview = shift || 0; 202 203 my $ce = $self->r->ce; 204 205 my $problemResult = $pg->{result}; # the overall result of the problem 206 my @answerNames = @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }; 207 208 my $showMessages = $showAttemptAnswers && grep { $pg->{answers}->{$_}->{ans_message} } @answerNames; 209 210 my $basename = "equation-" . $self->{set}->psvn. "." . $self->{problem}->problem_id . "-preview"; 211 212 # to make grabbing these options easier, we'll pull them out now... 213 my %imagesModeOptions = %{$ce->{pg}->{displayModeOptions}->{images}}; 214 215 my $imgGen = WeBWorK::PG::ImageGenerator->new( 216 tempDir => $ce->{webworkDirs}->{tmp}, 217 latex => $ce->{externalPrograms}->{latex}, 218 dvipng => $ce->{externalPrograms}->{dvipng}, 219 useCache => 1, 220 cacheDir => $ce->{webworkDirs}->{equationCache}, 221 cacheURL => $ce->{webworkURLs}->{equationCache}, 222 cacheDB => $ce->{webworkFiles}->{equationCacheDB}, 223 dvipng_align => $imagesModeOptions{dvipng_align}, 224 dvipng_depth_db => $imagesModeOptions{dvipng_depth_db}, 225 ); 226 227 my $header; 228 #$header .= CGI::th("Part"); 229 $header .= $showAttemptAnswers ? CGI::th("Entered") : ""; 230 $header .= $showAttemptPreview ? CGI::th("Answer Preview") : ""; 231 $header .= $showCorrectAnswers ? CGI::th("Correct") : ""; 232 $header .= $showAttemptResults ? CGI::th("Result") : ""; 233 $header .= $showMessages ? CGI::th("Messages") : ""; 234 my $fully = ''; 235 my @tableRows = ( $header ); 236 my $numCorrect = 0; 237 my $numBlanks =0; 238 my $tthPreambleCache; 239 foreach my $name (@answerNames) { 240 my $answerResult = $pg->{answers}->{$name}; 241 my $studentAnswer = $answerResult->{student_ans}; # original_student_ans 242 my $preview = ($showAttemptPreview 243 ? $self->previewAnswer($answerResult, $imgGen, \$tthPreambleCache) 244 : ""); 245 my $correctAnswer = $answerResult->{correct_ans}; 246 my $answerScore = $answerResult->{score}; 247 my $answerMessage = $showMessages ? $answerResult->{ans_message} : ""; 248 $answerMessage =~ s/\n/<BR>/g; 249 $numCorrect += $answerScore >= 1; 250 $numBlanks++ unless $studentAnswer =~/\S/; # unless student answer contains entry 251 my $resultString = $answerScore >= 1 ? "correct" : 252 $answerScore > 0 ? int($answerScore*100)."% correct" : 253 "incorrect"; 254 $fully = 'completely ' if $answerScore >0 and $answerScore < 1; 255 256 # get rid of the goofy prefix on the answer names (supposedly, the format 257 # of the answer names is changeable. this only fixes it for "AnSwEr" 258 #$name =~ s/^AnSwEr//; 259 260 my $row; 261 #$row .= CGI::td($name); 262 $row .= $showAttemptAnswers ? CGI::td($self->nbsp($studentAnswer)) : ""; 263 $row .= $showAttemptPreview ? CGI::td($self->nbsp($preview)) : ""; 264 $row .= $showCorrectAnswers ? CGI::td($self->nbsp($correctAnswer)) : ""; 265 $row .= $showAttemptResults ? CGI::td($self->nbsp($resultString)) : ""; 266 $row .= $showMessages ? CGI::td({-class=>"Message"},$self->nbsp($answerMessage)) : ""; 267 push @tableRows, $row; 268 } 269 270 # render equation images 271 $imgGen->render(refresh => 1); 272 273 # my $numIncorrectNoun = scalar @answerNames == 1 ? "question" : "questions"; 274 my $scorePercent = sprintf("%.0f%%", $problemResult->{score} * 100); 275 # FIXME -- I left the old code in in case we have to back out. 276 # my $summary = "On this attempt, you answered $numCorrect out of " 277 # . scalar @answerNames . " $numIncorrectNoun correct, for a score of $scorePercent."; 278 my $summary = ""; 279 unless (defined($problemResult->{summary}) and $problemResult->{summary} =~ /\S/) { 280 if (scalar @answerNames == 1) { #default messages 281 if ($numCorrect == scalar @answerNames) { 282 $summary .= CGI::div({class=>"ResultsWithoutError"},"The above answer is correct."); 283 } else { 284 $summary .= CGI::div({class=>"ResultsWithError"},"The above answer is NOT ${fully}correct."); 285 } 286 } else { 287 if ($numCorrect == scalar @answerNames) { 288 $summary .= CGI::div({class=>"ResultsWithoutError"},"All of the above answers are correct."); 289 } 290 unless ($numCorrect + $numBlanks == scalar( @answerNames)) { 291 $summary .= CGI::div({class=>"ResultsWithError"},"At least one of the above answers is NOT ${fully}correct."); 292 } 293 if ($numBlanks) { 294 my $s = ($numBlanks>1)?'':'s'; 295 $summary .= CGI::div({class=>"ResultsAlert"},"$numBlanks of the questions remain$s unanswered."); 296 } 297 } 298 } else { 299 $summary = $problemResult->{summary}; # summary has been defined by grader 300 } 301 return 302 CGI::table({-class=>"attemptResults"}, CGI::Tr(\@tableRows)) 303 . ($showSummary ? CGI::p({class=>'emphasis'},$summary) : ""); 304 } 305 306 307 # Note: previewAnswer is lifted into GatewayQuiz.pm 308 309 sub previewAnswer { 310 my ($self, $answerResult, $imgGen, $tthPreambleCache) = @_; 311 my $ce = $self->r->ce; 312 my $effectiveUser = $self->{effectiveUser}; 313 my $set = $self->{set}; 314 my $problem = $self->{problem}; 315 my $displayMode = $self->{displayMode}; 316 317 # note: right now, we have to do things completely differently when we are 318 # rendering math from INSIDE the translator and from OUTSIDE the translator. 319 # so we'll just deal with each case explicitly here. there's some code 320 # duplication that can be dealt with later by abstracting out tth/dvipng/etc. 321 322 my $tex = $answerResult->{preview_latex_string}; 323 324 return "" unless defined $tex and $tex ne ""; 325 326 if ($displayMode eq "plainText") { 327 return $tex; 328 } elsif ($displayMode eq "formattedText") { 329 330 # read the TTH preamble, or use the cached copy passed in from the caller 331 my $tthPreamble; 332 if (defined $$tthPreambleCache) { 333 $tthPreamble = $$tthPreambleCache; 334 } else { 335 my $tthPreambleFile = $ce->{courseDirs}->{templates} . "/tthPreamble.tex"; 336 if (-r $tthPreambleFile) { 337 $tthPreamble = readFile($tthPreambleFile); 338 # thanks to Jim Martino. each line in the definition file should end with 339 #a % to prevent adding supurious paragraphs to output: 340 $tthPreamble =~ s/(.)\n/$1%\n/g; 341 # solves the problem if the file doesn't end with a return: 342 $tthPreamble .="%\n"; 343 # store preamble in cache: 344 $$tthPreambleCache = $tthPreamble; 345 } else { 346 } 347 } 348 349 # construct TTH command line 350 my $tthCommand = $ce->{externalPrograms}->{tth} 351 . " -L -f5 -u -r 2> /dev/null <<END_OF_INPUT; echo > /dev/null\n" 352 . $tthPreamble . "\\[" . $tex . "\\]\n" 353 . "END_OF_INPUT\n"; 354 355 # call tth 356 my $result = `$tthCommand`; 357 if ($?) { 358 return "<b>[tth failed: $? $@]</b>"; 359 } else { 360 # avoid border problems in tables and remove unneeded initial <br> 361 $result =~ s/(<table [^>]*)>/$1 CLASS="ArrayLayout">/gi; 362 $result =~ s!\s*<br clear="all" />!!; 363 return $result; 364 } 365 366 } elsif ($displayMode eq "images") { 367 $imgGen->add($tex); 368 } elsif ($displayMode eq "jsMath") { 369 return '<SPAN CLASS="math">\\displaystyle{'.$tex.'}</SPAN>'; 370 } 371 } 372 373 ################################################################################ 374 # Template escape implementations 375 ################################################################################ 376 377 sub pre_header_initialize { 378 my ($self) = @_; 379 my $r = $self->r; 380 my $ce = $r->ce; 381 my $db = $r->db; 382 my $authz = $r->authz; 383 my $urlpath = $r->urlpath; 384 385 my $setName = $urlpath->arg("setID"); 386 my $problemNumber = $r->urlpath->arg("problemID"); 387 my $userName = $r->param('user'); 388 my $effectiveUserName = $r->param('effectiveUser'); 389 my $key = $r->param('key'); 390 391 my $user = $db->getUser($userName); # checked 392 die "record for user $userName (real user) does not exist." 393 unless defined $user; 394 395 my $effectiveUser = $db->getUser($effectiveUserName); # checked 396 die "record for user $effectiveUserName (effective user) does not exist." 397 unless defined $effectiveUser; 398 399 # obtain the merged set for $effectiveUser 400 my $set = $db->getMergedSet($effectiveUserName, $setName); # checked 401 402 $self->set_showOldAnswers_default($ce, $userName, $authz, $set); 403 404 # gateway check here: we want to be sure that someone isn't trying to take 405 # a GatewayQuiz through the regular problem/homework mechanism, thereby 406 # circumventing the versioning, time limits, etc. 407 die('Invalid access attempt: the Problem ContentGenerator was called ' . 408 'for a GatewayQuiz assignment.') 409 if ( defined($set) && defined( $set->assignment_type() ) && 410 $set->assignment_type() =~ /gateway/ ); 411 412 # Database fix (in case of undefined published values) 413 # this is only necessary because some people keep holding to ww1.9 which did not have a published field 414 # make sure published is set to 0 or 1 415 if ( $set and $set->published ne "0" and $set->published ne "1") { 416 my $globalSet = $db->getGlobalSet($set->set_id); 417 $globalSet->published("1"); # defaults to published 418 $db->putGlobalSet($globalSet); 419 $set = $db->getMergedSet($effectiveUserName, $setName); 420 } else { 421 # don't do anything just yet, maybe we're a professor and we're 422 # fabricating a set or haven't assigned it to ourselves just yet 423 } 424 425 # obtain the merged problem for $effectiveUser 426 my $problem = $db->getMergedProblem($effectiveUserName, $setName, $problemNumber); # checked 427 428 my $editMode = $r->param("editMode"); 429 430 if ($authz->hasPermissions($userName, "modify_problem_sets")) { 431 # professors are allowed to fabricate sets and problems not 432 # assigned to them (or anyone). this allows them to use the 433 # editor to 434 435 # if a User Set does not exist for this user and this set 436 # then we check the Global Set 437 # if that does not exist we create a fake set 438 # if it does, we add fake user data 439 unless (defined $set) { 440 my $userSetClass = $db->{set_user}->{record}; 441 my $globalSet = $db->getGlobalSet($setName); # checked 442 443 if (not defined $globalSet) { 444 $set = fake_set($db); 445 } else { 446 $set = global2user($userSetClass, $globalSet); 447 $set->psvn(0); 448 } 449 } 450 451 # if that is not yet defined obtain the global problem, 452 # convert it to a user problem, and add fake user data 453 unless (defined $problem) { 454 my $userProblemClass = $db->{problem_user}->{record}; 455 my $globalProblem = $db->getGlobalProblem($setName, $problemNumber); # checked 456 # if the global problem doesn't exist either, bail! 457 if(not defined $globalProblem) { 458 my $sourceFilePath = $r->param("sourceFilePath"); 459 # These are problems from setmaker. If declared invalid, they won't come up 460 $self->{invalidProblem} = $self->{invalidSet} = 1 unless defined $sourceFilePath; 461 # die "Problem $problemNumber in set $setName does not exist" unless defined $sourceFilePath; 462 $problem = fake_problem($db); 463 $problem->problem_id(1); 464 $problem->source_file($sourceFilePath); 465 $problem->user_id($effectiveUserName); 466 } else { 467 $problem = global2user($userProblemClass, $globalProblem); 468 $problem->user_id($effectiveUserName); 469 $problem->problem_seed(0); 470 $problem->status(0); 471 $problem->attempted(0); 472 $problem->last_answer(""); 473 $problem->num_correct(0); 474 $problem->num_incorrect(0); 475 } 476 } 477 478 # now we're sure we have valid UserSet and UserProblem objects 479 # yay! 480 481 # now deal with possible editor overrides: 482 483 # if the caller is asking to override the source file, and 484 # editMode calls for a temporary file, do so 485 my $sourceFilePath = $r->param("sourceFilePath"); 486 if (defined $sourceFilePath and 487 (not defined $editMode or $editMode eq "temporaryFile")) { 488 $problem->source_file($sourceFilePath); 489 } 490 491 # if the problem does not have a source file or no source file has been passed in 492 # then this is really an invalid problem (probably from a bad URL) 493 $self->{invalidProblem} = not (defined $sourceFilePath or $problem->source_file); 494 495 # if the caller is asking to override the problem seed, do so 496 my $problemSeed = $r->param("problemSeed"); 497 if (defined $problemSeed) { 498 $problem->problem_seed($problemSeed); 499 } 500 501 my $publishedClass = ($set->published) ? "Published" : "Unpublished"; 502 my $publishedText = ($set->published) ? "visible to students." : "hidden from students."; 503 $self->addmessage(CGI::p("This set is " . CGI::font({class=>$publishedClass}, $publishedText))); 504 505 # test for additional set validity if it's not already invalid 506 } else { 507 # A set is valid if it exists and if it is either published or the user is privileged. 508 $self->{invalidSet} = !(defined $set and ($set->published || $authz->hasPermissions($userName, "view_unpublished_sets"))); 509 $self->{invalidProblem} = !(defined $problem and ($set->published || $authz->hasPermissions($userName, "view_unpublished_sets"))); 510 511 $self->addbadmessage(CGI::p("This problem will not count towards your grade.")) if $problem and not $problem->value and not $self->{invalidProblem}; 512 } 513 514 $self->{userName} = $userName; 515 $self->{effectiveUserName} = $effectiveUserName; 516 $self->{user} = $user; 517 $self->{effectiveUser} = $effectiveUser; 518 $self->{set} = $set; 519 $self->{problem} = $problem; 520 $self->{editMode} = $editMode; 521 522 ##### form processing ##### 523 524 # set options from form fields (see comment at top of file for names) 525 my $displayMode = $r->param("displayMode") || $ce->{pg}->{options}->{displayMode}; 526 my $redisplay = $r->param("redisplay"); 527 my $submitAnswers = $r->param("submitAnswers"); 528 my $checkAnswers = $r->param("checkAnswers"); 529 my $previewAnswers = $r->param("previewAnswers"); 530 531 my $formFields = { WeBWorK::Form->new_from_paramable($r)->Vars }; 532 533 $self->{displayMode} = $displayMode; 534 $self->{redisplay} = $redisplay; 535 $self->{submitAnswers} = $submitAnswers; 536 $self->{checkAnswers} = $checkAnswers; 537 $self->{previewAnswers} = $previewAnswers; 538 $self->{formFields} = $formFields; 539 540 # get result and send to message 541 my $status_message = $r->param("status_message"); 542 $self->addmessage(CGI::p("$status_message")) if $status_message; 543 544 # now that we've set all the necessary variables quit out if the set or problem is invalid 545 return if $self->{invalidSet} || $self->{invalidProblem}; 546 547 ##### permissions ##### 548 549 # are we allowed to view this problem? 550 $self->{isOpen} = after($set->open_date) || $authz->hasPermissions($userName, "view_unopened_sets"); 551 return unless $self->{isOpen}; 552 553 # what does the user want to do? 554 #FIXME There is a problem with checkboxes -- if they are not checked they are invisible. Hence if the default mode in $ce is 1 555 # there is no way to override this. Probably this is ok for the last three options, but it was definitely not ok for showing 556 # saved answers which is normally on, but you want to be able to turn it off! This section should be moved to ContentGenerator 557 # so that you can set these options anywhere. We also need mechanisms for making them sticky. 558 # Note: ProblemSet and ProblemSets might set showOldAnswers to '', which 559 # needs to be treated as if it is not set. 560 my %want = ( 561 showOldAnswers => (defined($r->param("showOldAnswers")) and $r->param("showOldAnswers") ne '') ? $r->param("showOldAnswers") : $ce->{pg}->{options}->{showOldAnswers}, 562 showCorrectAnswers => $r->param("showCorrectAnswers") || $ce->{pg}->{options}->{showCorrectAnswers}, 563 showHints => $r->param("showHints") || $ce->{pg}->{options}->{showHints}, 564 showSolutions => $r->param("showSolutions") || $ce->{pg}->{options}->{showSolutions}, 565 recordAnswers => $submitAnswers, 566 checkAnswers => $checkAnswers, 567 getSubmitButton => 1, 568 ); 569 570 # are certain options enforced? 571 my %must = ( 572 showOldAnswers => 0, 573 showCorrectAnswers => 0, 574 showHints => 0, 575 showSolutions => 0, 576 recordAnswers => ! $authz->hasPermissions($userName, "avoid_recording_answers"), 577 checkAnswers => 0, 578 getSubmitButton => 0, 579 ); 580 581 # does the user have permission to use certain options? 582 my @args = ($user, $effectiveUser, $set, $problem); 583 my %can = ( 584 showOldAnswers => $self->can_showOldAnswers(@args), 585 showCorrectAnswers => $self->can_showCorrectAnswers(@args), 586 showHints => $self->can_showHints(@args), 587 showSolutions => $self->can_showSolutions(@args), 588 recordAnswers => $self->can_recordAnswers(@args, 0), 589 checkAnswers => $self->can_checkAnswers(@args, $submitAnswers), 590 getSubmitButton => $self->can_recordAnswers(@args, $submitAnswers), 591 ); 592 593 # final values for options 594 my %will; 595 foreach (keys %must) { 596 $will{$_} = $can{$_} && ($want{$_} || $must{$_}); 597 } 598 599 ##### sticky answers ##### 600 601 if (not ($submitAnswers or $previewAnswers or $checkAnswers) and $will{showOldAnswers}) { 602 # do this only if new answers are NOT being submitted 603 my %oldAnswers = decodeAnswers($problem->last_answer); 604 $formFields->{$_} = $oldAnswers{$_} foreach keys %oldAnswers; 605 } 606 607 ##### translation ##### 608 609 debug("begin pg processing"); 610 my $pg = WeBWorK::PG->new( 611 $ce, 612 $effectiveUser, 613 $key, 614 $set, 615 $problem, 616 $set->psvn, # FIXME: this field should be removed 617 $formFields, 618 { # translation options 619 displayMode => $displayMode, 620 showHints => $will{showHints}, 621 showSolutions => $will{showSolutions}, 622 refreshMath2img => $will{showHints} || $will{showSolutions}, 623 processAnswers => 1, 624 }, 625 ); 626 627 debug("end pg processing"); 628 629 ##### fix hint/solution options ##### 630 631 $can{showHints} &&= $pg->{flags}->{hintExists} 632 &&= $pg->{flags}->{showHintLimit}<=$pg->{state}->{num_of_incorrect_ans}; 633 $can{showSolutions} &&= $pg->{flags}->{solutionExists}; 634 635 ##### store fields ##### 636 637 $self->{want} = \%want; 638 $self->{must} = \%must; 639 $self->{can} = \%can; 640 $self->{will} = \%will; 641 $self->{pg} = $pg; 642 } 643 644 sub if_errors($$) { 645 my ($self, $arg) = @_; 646 647 if ($self->{isOpen}) { 648 return $self->{pg}->{flags}->{error_flag} ? $arg : !$arg; 649 } else { 650 return !$arg; 651 } 652 } 653 654 sub head { 655 my ($self) = @_; 656 657 return "" unless $self->{isOpen}; 658 return $self->{pg}->{head_text} if $self->{pg}->{head_text}; 659 } 660 661 sub options { 662 my ($self) = @_; 663 #warn "doing options in Problem"; 664 665 # don't show options if we don't have anything to show 666 return if $self->{invalidSet} or $self->{invalidProblem}; 667 return unless $self->{isOpen}; 668 669 my $displayMode = $self->{displayMode}; 670 my %can = %{ $self->{can} }; 671 672 my @options_to_show = "displayMode"; 673 push @options_to_show, "showOldAnswers" if $can{showOldAnswers}; 674 push @options_to_show, "showHints" if $can{showHints}; 675 push @options_to_show, "showSolutions" if $can{showSolutions}; 676 677 return $self->optionsMacro( 678 options_to_show => \@options_to_show, 679 extra_params => ["editMode", "sourceFilePath"], 680 ); 681 } 682 683 sub siblings { 684 my ($self) = @_; 685 my $r = $self->r; 686 my $db = $r->db; 687 my $urlpath = $r->urlpath; 688 689 # can't show sibling problems if the set is invalid 690 return "" if $self->{invalidSet}; 691 692 my $courseID = $urlpath->arg("courseID"); 693 my $setID = $self->{set}->set_id; 694 my $eUserID = $r->param("effectiveUser"); 695 my @problemIDs = sort { $a <=> $b } $db->listUserProblems($eUserID, $setID); 696 697 print CGI::start_ul({class=>"LinksMenu"}); 698 print CGI::start_li(); 699 print CGI::span({style=>"font-size:larger"}, "Problems"); 700 print CGI::start_ul(); 701 702 foreach my $problemID (@problemIDs) { 703 my $problemPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Problem", 704 courseID => $courseID, setID => $setID, problemID => $problemID); 705 print CGI::li(CGI::a( {href=>$self->systemLink($problemPage, 706 params=>{ displayMode => $self->{displayMode}, 707 showOldAnswers => $self->{will}->{showOldAnswers} 708 })}, "Problem $problemID") 709 ); 710 } 711 712 print CGI::end_ul(); 713 print CGI::end_li(); 714 print CGI::end_ul(); 715 716 return ""; 717 } 718 719 sub nav { 720 my ($self, $args) = @_; 721 my $r = $self->r; 722 my $db = $r->db; 723 my $urlpath = $r->urlpath; 724 725 my $courseID = $urlpath->arg("courseID"); 726 my $setID = $self->{set}->set_id if !($self->{invalidSet}); 727 my $problemID = $self->{problem}->problem_id if !($self->{invalidProblem}); 728 my $eUserID = $r->param("effectiveUser"); 729 730 my ($prevID, $nextID); 731 732 if (!$self->{invalidProblem}) { 733 my @problemIDs = $db->listUserProblems($eUserID, $setID); 734 foreach my $id (@problemIDs) { 735 $prevID = $id if $id < $problemID 736 and (not defined $prevID or $id > $prevID); 737 $nextID = $id if $id > $problemID 738 and (not defined $nextID or $id < $nextID); 739 } 740 } 741 742 my @links; 743 744 if ($prevID) { 745 my $prevPage = $urlpath->newFromModule(__PACKAGE__, 746 courseID => $courseID, setID => $setID, problemID => $prevID); 747 push @links, "Previous Problem", $r->location . $prevPage->path, "navPrev"; 748 } else { 749 push @links, "Previous Problem", "", "navPrev"; 750 } 751 752 push @links, "Problem List", $r->location . $urlpath->parent->path, "navProbList"; 753 754 if ($nextID) { 755 my $nextPage = $urlpath->newFromModule(__PACKAGE__, 756 courseID => $courseID, setID => $setID, problemID => $nextID); 757 push @links, "Next Problem", $r->location . $nextPage->path, "navNext"; 758 } else { 759 push @links, "Next Problem", "", "navNext"; 760 } 761 762 my $tail = "&displayMode=".$self->{displayMode}."&showOldAnswers=".$self->{will}->{showOldAnswers}; 763 return $self->navMacro($args, $tail, @links); 764 } 765 766 sub title { 767 my ($self) = @_; 768 769 # using the url arguments won't break if the set/problem are invalid 770 my $setID = WeBWorK::ContentGenerator::underscore2nbsp($self->r->urlpath->arg("setID")); 771 my $problemID = $self->r->urlpath->arg("problemID"); 772 773 return "$setID: Problem $problemID"; 774 } 775 776 sub body { 777 my $self = shift; 778 my $r = $self->r; 779 my $ce = $r->ce; 780 my $db = $r->db; 781 my $authz = $r->authz; 782 my $urlpath = $r->urlpath; 783 my $user = $r->param('user'); 784 my $effectiveUser = $r->param('effectiveUser'); 785 786 if ($self->{invalidSet}) { 787 return CGI::div({class=>"ResultsWithError"}, 788 CGI::p("The selected homework set (" . $urlpath->arg("setID") . ") is not a valid set for " . $r->param("effectiveUser") . ".")); 789 } 790 791 if ($self->{invalidProblem}) { 792 return CGI::div({class=>"ResultsWithError"}, 793 CGI::p("The selected problem (" . $urlpath->arg("problemID") . ") is not a valid problem for set " . $self->{set}->set_id . ".")); 794 } 795 796 unless ($self->{isOpen}) { 797 return CGI::div({class=>"ResultsWithError"}, 798 CGI::p("This problem is not available because the homework set that contains it is not yet open.")); 799 } 800 # unpack some useful variables 801 my $set = $self->{set}; 802 my $problem = $self->{problem}; 803 my $editMode = $self->{editMode}; 804 my $submitAnswers = $self->{submitAnswers}; 805 my $checkAnswers = $self->{checkAnswers}; 806 my $previewAnswers = $self->{previewAnswers}; 807 my %want = %{ $self->{want} }; 808 my %can = %{ $self->{can} }; 809 my %must = %{ $self->{must} }; 810 my %will = %{ $self->{will} }; 811 my $pg = $self->{pg}; 812 813 my $courseName = $urlpath->arg("courseID"); 814 815 # FIXME: move editor link to top, next to problem number. 816 # format as "[edit]" like we're doing with course info file, etc. 817 # add edit link for set as well. 818 my $editorLink = ""; 819 # if we are here without a real problem set, carry that through 820 my $forced_field = []; 821 $forced_field = ['sourceFilePath' => $r->param("sourceFilePath")] if 822 ($set->set_id eq 'Undefined_Set'); 823 if ($authz->hasPermissions($user, "modify_problem_sets")) { 824 my $editorPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::PGProblemEditor", 825 courseID => $courseName, setID => $set->set_id, problemID => $problem->problem_id); 826 my $editorURL = $self->systemLink($editorPage, params=>$forced_field); 827 $editorLink = CGI::a({href=>$editorURL}, "Edit this problem"); 828 } 829 830 ##### translation errors? ##### 831 832 if ($pg->{flags}->{error_flag}) { 833 print $self->errorOutput($pg->{errors}, $pg->{body_text}); 834 print $editorLink; 835 return ""; 836 } 837 838 ##### answer processing ##### 839 debug("begin answer processing"); 840 # if answers were submitted: 841 my $scoreRecordedMessage; 842 my $pureProblem; 843 if ($submitAnswers) { 844 # get a "pure" (unmerged) UserProblem to modify 845 # this will be undefined if the problem has not been assigned to this user 846 $pureProblem = $db->getUserProblem($problem->user_id, $problem->set_id, $problem->problem_id); # checked 847 if (defined $pureProblem) { 848 # store answers in DB for sticky answers 849 my %answersToStore; 850 my %answerHash = %{ $pg->{answers} }; 851 $answersToStore{$_} = $self->{formFields}->{$_} #$answerHash{$_}->{original_student_ans} -- this may have been modified for fields with multiple values. Don't use it!! 852 foreach (keys %answerHash); 853 854 # There may be some more answers to store -- one which are auxiliary entries to a primary answer. Evaluating 855 # matrices works in this way, only the first answer triggers an answer evaluator, the rest are just inputs 856 # however we need to store them. Fortunately they are still in the input form. 857 my @extra_answer_names = @{ $pg->{flags}->{KEPT_EXTRA_ANSWERS}}; 858 $answersToStore{$_} = $self->{formFields}->{$_} foreach (@extra_answer_names); 859 860 # Now let's encode these answers to store them -- append the extra answers to the end of answer entry order 861 my @answer_order = (@{$pg->{flags}->{ANSWER_ENTRY_ORDER}}, @extra_answer_names); 862 my $answerString = encodeAnswers(%answersToStore, 863 @answer_order); 864 865 # store last answer to database 866 $problem->last_answer($answerString); 867 $pureProblem->last_answer($answerString); 868 $db->putUserProblem($pureProblem); 869 870 # store state in DB if it makes sense 871 if ($will{recordAnswers}) { 872 $problem->status($pg->{state}->{recorded_score}); 873 $problem->attempted(1); 874 $problem->num_correct($pg->{state}->{num_of_correct_ans}); 875 $problem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 876 $pureProblem->status($pg->{state}->{recorded_score}); 877 $pureProblem->attempted(1); 878 $pureProblem->num_correct($pg->{state}->{num_of_correct_ans}); 879 $pureProblem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 880 if ($db->putUserProblem($pureProblem)) { 881 $scoreRecordedMessage = "Your score was recorded."; 882 } else { 883 $scoreRecordedMessage = "Your score was not recorded because there was a failure in storing the problem record to the database."; 884 } 885 # write to the transaction log, just to make sure 886 writeLog($self->{ce}, "transaction", 887 $problem->problem_id."\t". 888 $problem->set_id."\t". 889 $problem->user_id."\t". 890 $problem->source_file."\t". 891 $problem->value."\t". 892 $problem->max_attempts."\t". 893 $problem->problem_seed."\t". 894 $pureProblem->status."\t". 895 $pureProblem->attempted."\t". 896 $pureProblem->last_answer."\t". 897 $pureProblem->num_correct."\t". 898 $pureProblem->num_incorrect 899 ); 900 } else { 901 if (before($set->open_date) or after($set->due_date)) { 902 $scoreRecordedMessage = "Your score was not recorded because this homework set is closed."; 903 } else { 904 $scoreRecordedMessage = "Your score was not recorded."; 905 } 906 } 907 } else { 908 $scoreRecordedMessage = "Your score was not recorded because this problem has not been assigned to you."; 909 } 910 } 911 912 # logging student answers 913 914 my $answer_log = $self->{ce}->{courseFiles}->{logs}->{'answer_log'}; 915 if ( defined($answer_log ) and defined($pureProblem)) { 916 if ($submitAnswers && !$authz->hasPermissions($effectiveUser, "dont_log_past_answers")) { 917 my $answerString = ""; my $scores = ""; 918 my %answerHash = %{ $pg->{answers} }; 919 # FIXME this is the line 552 error. make sure original student ans is defined. 920 # The fact that it is not defined is probably due to an error in some answer evaluator. 921 # But I think it is useful to suppress this error message in the log. 922 foreach (sort keys %answerHash) { 923 my $orig_ans = $answerHash{$_}->{original_student_ans}; 924 my $student_ans = defined $orig_ans ? $orig_ans : ''; 925 $answerString .= $student_ans."\t"; 926 $scores .= $answerHash{$_}->{score} >= 1 ? "1" : "0"; 927 } 928 $answerString = '' unless defined($answerString); # insure string is defined. 929 writeCourseLog($self->{ce}, "answer_log", 930 join("", 931 '|', $problem->user_id, 932 '|', $problem->set_id, 933 '|', $problem->problem_id, 934 '|', $scores, "\t", 935 time(),"\t", 936 $answerString, 937 ), 938 ); 939 940 } 941 } 942 943 debug("end answer processing"); 944 945 ##### output ##### 946 # custom message for editor 947 if ($authz->hasPermissions($user, "modify_problem_sets") and defined $editMode) { 948 if ($editMode eq "temporaryFile") { 949 print CGI::p(CGI::div({class=>'temporaryFile'}, "Viewing temporary file: ", $problem->source_file)); 950 } elsif ($editMode eq "savedFile") { 951 # taken care of in the initialization phase 952 } 953 } 954 print CGI::start_div({class=>"problemHeader"}); 955 956 957 958 # attempt summary 959 #FIXME -- the following is a kludge: if showPartialCorrectAnswers is negative don't show anything. 960 # until after the due date 961 # do I need to check $will{showCorrectAnswers} to make preflight work?? 962 if (($pg->{flags}->{showPartialCorrectAnswers} >= 0 and $submitAnswers) ) { 963 # print this if user submitted answers OR requested correct answers 964 965 print $self->attemptResults($pg, 1, 966 $will{showCorrectAnswers}, 967 $pg->{flags}->{showPartialCorrectAnswers}, 1, 1); 968 } elsif ($checkAnswers) { 969 # print this if user previewed answers 970 print CGI::div({class=>'ResultsWithError'},"ANSWERS ONLY CHECKED -- ANSWERS NOT RECORDED"), CGI::br(); 971 print $self->attemptResults($pg, 1, $will{showCorrectAnswers}, 1, 1, 1); 972 # show attempt answers 973 # show correct answers if asked 974 # show attempt results (correctness) 975 # show attempt previews 976 } elsif ($previewAnswers) { 977 # print this if user previewed answers 978 print CGI::div({class=>'ResultsWithError'},"PREVIEW ONLY -- ANSWERS NOT RECORDED"),CGI::br(),$self->attemptResults($pg, 1, 0, 0, 0, 1); 979 # show attempt answers 980 # don't show correct answers 981 # don't show attempt results (correctness) 982 # show attempt previews 983 } 984 985 print CGI::end_div(); 986 987 # main form 988 print CGI::startform("POST", $r->uri); 989 print $self->hidden_authen_fields; 990 991 print CGI::start_div({class=>"problem"}); 992 print CGI::p($pg->{body_text}); 993 print CGI::p(CGI::b("Note: "), CGI::i($pg->{result}->{msg})) if $pg->{result}->{msg}; 994 print CGI::end_div(); 995 996 print CGI::start_p(); 997 998 if ($can{showCorrectAnswers}) { 999 print CGI::checkbox( 1000 -name => "showCorrectAnswers", 1001 -checked => $will{showCorrectAnswers}, 1002 -label => "Show correct answers", 1003 ); 1004 } 1005 if ($can{showHints}) { 1006 print CGI::div({style=>"color:red"}, 1007 CGI::checkbox( 1008 -name => "showHints", 1009 -checked => $will{showHints}, 1010 -label => "Show Hints", 1011 ) 1012 ); 1013 } 1014 if ($can{showSolutions}) { 1015 print CGI::checkbox( 1016 -name => "showSolutions", 1017 -checked => $will{showSolutions}, 1018 -label => "Show Solutions", 1019 ); 1020 } 1021 1022 if ($can{showCorrectAnswers} or $can{showHints} or $can{showSolutions}) { 1023 print CGI::br(); 1024 } 1025 1026 print CGI::submit(-name=>"previewAnswers", -label=>"Preview Answers"); 1027 if ($can{checkAnswers}) { 1028 print CGI::submit(-name=>"checkAnswers", -label=>"Check Answers"); 1029 } 1030 if ($can{getSubmitButton}) { 1031 if ($user ne $effectiveUser) { 1032 # if acting as a student, make it clear that answer submissions will 1033 # apply to the student's records, not the professor's. 1034 print CGI::submit(-name=>"submitAnswers", -label=>"Submit Answers for $effectiveUser"); 1035 } else { 1036 print CGI::submit(-name=>"submitAnswers", -label=>"Submit Answers"); 1037 } 1038 } 1039 1040 print CGI::end_p(); 1041 1042 print CGI::start_div({class=>"scoreSummary"}); 1043 1044 # score summary 1045 my $attempts = $problem->num_correct + $problem->num_incorrect; 1046 my $attemptsNoun = $attempts != 1 ? "times" : "time"; 1047 my $problem_status = $problem->status || 0; 1048 my $lastScore = sprintf("%.0f%%", $problem_status * 100); # Round to whole number 1049 my ($attemptsLeft, $attemptsLeftNoun); 1050 if ($problem->max_attempts == -1) { 1051 # unlimited attempts 1052 $attemptsLeft = "unlimited"; 1053 $attemptsLeftNoun = "attempts"; 1054 } else { 1055 $attemptsLeft = $problem->max_attempts - $attempts; 1056 $attemptsLeftNoun = $attemptsLeft == 1 ? "attempt" : "attempts"; 1057 } 1058 1059 my $setClosed = 0; 1060 my $setClosedMessage; 1061 if (before($set->open_date) or after($set->due_date)) { 1062 $setClosed = 1; 1063 if (before($set->open_date)) { 1064 $setClosedMessage = "This homework set is not yet open."; 1065 } elsif (after($set->due_date)) { 1066 $setClosedMessage = "This homework set is closed."; 1067 } 1068 } 1069 #if (before($set->open_date) or after($set->due_date)) { 1070 # $setClosed = 1; 1071 # $setClosedMessage = "This homework set is closed."; 1072 # if ($authz->hasPermissions($user, "view_answers")) { 1073 # $setClosedMessage .= " However, since you are a privileged user, additional attempts will be recorded."; 1074 # } else { 1075 # $setClosedMessage .= " Additional attempts will not be recorded."; 1076 # } 1077 #} 1078 unless (defined( $pg->{state}->{state_summary_msg}) and $pg->{state}->{state_summary_msg}=~/\S/) { 1079 my $notCountedMessage = ($problem->value) ? "" : "(This problem will not count towards your grade.)"; 1080 print CGI::p( 1081 $submitAnswers ? $scoreRecordedMessage . CGI::br() : "", 1082 "You have attempted this problem $attempts $attemptsNoun.", CGI::br(), 1083 $submitAnswers ?"You received a score of ".sprintf("%.0f%%", $pg->{result}->{score} * 100)." for this attempt.".CGI::br():'', 1084 $problem->attempted 1085 ? "Your overall recorded score is $lastScore. $notCountedMessage" . CGI::br() 1086 : "", 1087 $setClosed ? $setClosedMessage : "You have $attemptsLeft $attemptsLeftNoun remaining." 1088 ); 1089 }else { 1090 print CGI::p($pg->{state}->{state_summary_msg}); 1091 } 1092 print CGI::end_div(); 1093 1094 # save state for viewOptions 1095 print CGI::hidden( 1096 -name => "showOldAnswers", 1097 -value => $will{showOldAnswers} 1098 ), 1099 1100 CGI::hidden( 1101 -name => "displayMode", 1102 -value => $self->{displayMode} 1103 ); 1104 print( CGI::hidden( 1105 -name => 'editMode', 1106 -value => $self->{editMode}, 1107 ) 1108 ) if defined($self->{editMode}) and $self->{editMode} eq 'temporaryFile'; 1109 print( CGI::hidden( 1110 -name => 'sourceFilePath', 1111 -value => $self->{problem}->{source_file} 1112 )) if defined($self->{problem}->{source_file}); 1113 1114 print( CGI::hidden( 1115 -name => 'problemSeed', 1116 -value => $r->param("problemSeed") 1117 )) if defined($r->param("problemSeed")); 1118 1119 # end of main form 1120 print CGI::endform(); 1121 1122 print CGI::start_div({class=>"problemFooter"}); 1123 1124 ## arguments for answer inspection button 1125 #my $prof_url = $ce->{webworkURLs}->{oldProf}; 1126 #my $webworkURL = $ce->{webworkURLs}->{root}; 1127 #my $cgi_url = $prof_url; 1128 #$cgi_url=~ s|/[^/]*$||; # clip profLogin.pl 1129 #my $authen_args = $self->url_authen_args(); 1130 #my $showPastAnswersURL = "$webworkURL/$courseName/instructor/show_answers/"; 1131 1132 my $pastAnswersPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::ShowAnswers", 1133 courseID => $courseName); 1134 my $showPastAnswersURL = $self->systemLink($pastAnswersPage, authen => 0); # no authen info for form action 1135 1136 # print answer inspection button 1137 if ($authz->hasPermissions($user, "view_answers")) { 1138 print "\n", 1139 CGI::start_form(-method=>"POST",-action=>$showPastAnswersURL,-target=>"information"),"\n", 1140 $self->hidden_authen_fields,"\n", 1141 CGI::hidden(-name => 'courseID', -value=>$courseName), "\n", 1142 CGI::hidden(-name => 'problemID', -value=>$problem->problem_id), "\n", 1143 CGI::hidden(-name => 'setID', -value=>$problem->set_id), "\n", 1144 CGI::hidden(-name => 'studentUser', -value=>$problem->user_id), "\n", 1145 CGI::p( {-align=>"left"}, 1146 CGI::submit(-name => 'action', -value=>'Show Past Answers') 1147 ), "\n", 1148 CGI::endform(); 1149 } 1150 1151 # feedback form url 1152 my $feedbackPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Feedback", 1153 courseID => $courseName); 1154 my $feedbackURL = $self->systemLink($feedbackPage, authen => 0); # no authen info for form action 1155 1156 #print feedback form 1157 print 1158 CGI::start_form(-method=>"POST", -action=>$feedbackURL),"\n", 1159 $self->hidden_authen_fields,"\n", 1160 CGI::hidden("module", __PACKAGE__),"\n", 1161 CGI::hidden("set", $set->set_id),"\n", 1162 CGI::hidden("problem", $problem->problem_id),"\n", 1163 CGI::hidden("displayMode", $self->{displayMode}),"\n", 1164 CGI::hidden("showOldAnswers", $will{showOldAnswers}),"\n", 1165 CGI::hidden("showCorrectAnswers", $will{showCorrectAnswers}),"\n", 1166 CGI::hidden("showHints", $will{showHints}),"\n", 1167 CGI::hidden("showSolutions", $will{showSolutions}),"\n", 1168 CGI::p({-align=>"left"}, 1169 CGI::submit(-name=>"feedbackForm", -label=>"Email instructor") 1170 ), 1171 CGI::endform(),"\n"; 1172 1173 # FIXME print editor link 1174 print $editorLink; #empty unless it is appropriate to have an editor link. 1175 1176 print CGI::end_div(); 1177 1178 # debugging stuff 1179 if (0) { 1180 print 1181 CGI::hr(), 1182 CGI::h2("debugging information"), 1183 CGI::h3("form fields"), 1184 ref2string($self->{formFields}), 1185 CGI::h3("user object"), 1186 ref2string($self->{user}), 1187 CGI::h3("set object"), 1188 ref2string($set), 1189 CGI::h3("problem object"), 1190 ref2string($problem), 1191 CGI::h3("PG object"), 1192 ref2string($pg, {'WeBWorK::PG::Translator' => 1}); 1193 } 1194 1195 return ""; 1196 } 1197 1198 1;
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