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Changes to the reports of a problem status. This closes bug #631. It also reports blank errors differently from incorrect answers to support sequential problem graders. Finally it adds a "state_summary_msg" field to the problem state which can be used to completely replace the report on the current problem state usually printed at the bottom of a problem page.
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 1.176 2005/07/14 13:15:25 glarose 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::Form; 31 use WeBWorK::PG; 32 use WeBWorK::PG::ImageGenerator; 33 use WeBWorK::PG::IO; 34 use WeBWorK::Utils qw(readFile writeLog writeCourseLog encodeAnswers decodeAnswers ref2string makeTempDirectory); 35 use WeBWorK::DB::Utils qw(global2user user2global findDefaults); 36 use WeBWorK::Timing; 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 ################################################################################ 178 # output utilities 179 ################################################################################ 180 181 # Note: the substance of attemptResults is lifted into GatewayQuiz.pm, 182 # with some changes to the output format 183 184 sub attemptResults { 185 my $self = shift; 186 my $pg = shift; 187 my $showAttemptAnswers = shift; 188 my $showCorrectAnswers = shift; 189 my $showAttemptResults = $showAttemptAnswers && shift; 190 my $showSummary = shift; 191 my $showAttemptPreview = shift || 0; 192 193 my $ce = $self->r->ce; 194 195 my $problemResult = $pg->{result}; # the overall result of the problem 196 my @answerNames = @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }; 197 198 my $showMessages = $showAttemptAnswers && grep { $pg->{answers}->{$_}->{ans_message} } @answerNames; 199 200 my $basename = "equation-" . $self->{set}->psvn. "." . $self->{problem}->problem_id . "-preview"; 201 202 # to make grabbing these options easier, we'll pull them out now... 203 my %imagesModeOptions = %{$ce->{pg}->{displayModeOptions}->{images}}; 204 205 my $imgGen = WeBWorK::PG::ImageGenerator->new( 206 tempDir => $ce->{webworkDirs}->{tmp}, 207 latex => $ce->{externalPrograms}->{latex}, 208 dvipng => $ce->{externalPrograms}->{dvipng}, 209 useCache => 1, 210 cacheDir => $ce->{webworkDirs}->{equationCache}, 211 cacheURL => $ce->{webworkURLs}->{equationCache}, 212 cacheDB => $ce->{webworkFiles}->{equationCacheDB}, 213 dvipng_align => $imagesModeOptions{dvipng_align}, 214 dvipng_depth_db => $imagesModeOptions{dvipng_depth_db}, 215 ); 216 217 my $header; 218 #$header .= CGI::th("Part"); 219 $header .= $showAttemptAnswers ? CGI::th("Entered") : ""; 220 $header .= $showAttemptPreview ? CGI::th("Answer Preview") : ""; 221 $header .= $showCorrectAnswers ? CGI::th("Correct") : ""; 222 $header .= $showAttemptResults ? CGI::th("Result") : ""; 223 $header .= $showMessages ? CGI::th("Messages") : ""; 224 my $fully = ''; 225 my @tableRows = ( $header ); 226 my $numCorrect = 0; 227 my $numBlanks =0; 228 my $tthPreambleCache; 229 foreach my $name (@answerNames) { 230 my $answerResult = $pg->{answers}->{$name}; 231 my $studentAnswer = $answerResult->{student_ans}; # original_student_ans 232 my $preview = ($showAttemptPreview 233 ? $self->previewAnswer($answerResult, $imgGen, \$tthPreambleCache) 234 : ""); 235 my $correctAnswer = $answerResult->{correct_ans}; 236 my $answerScore = $answerResult->{score}; 237 my $answerMessage = $showMessages ? $answerResult->{ans_message} : ""; 238 $answerMessage =~ s/\n/<BR>/g; 239 $numCorrect += $answerScore >= 1; 240 $numBlanks++ unless $studentAnswer =~/\S/; # unless student answer contains entry 241 my $resultString = $answerScore >= 1 ? "correct" : 242 $answerScore > 0 ? int($answerScore*100)."% correct" : 243 "incorrect"; 244 $fully = 'completely ' if $answerScore >0 and $answerScore < 1; 245 246 # get rid of the goofy prefix on the answer names (supposedly, the format 247 # of the answer names is changeable. this only fixes it for "AnSwEr" 248 #$name =~ s/^AnSwEr//; 249 250 my $row; 251 #$row .= CGI::td($name); 252 $row .= $showAttemptAnswers ? CGI::td($self->nbsp($studentAnswer)) : ""; 253 $row .= $showAttemptPreview ? CGI::td($self->nbsp($preview)) : ""; 254 $row .= $showCorrectAnswers ? CGI::td($self->nbsp($correctAnswer)) : ""; 255 $row .= $showAttemptResults ? CGI::td($self->nbsp($resultString)) : ""; 256 $row .= $showMessages ? CGI::td({-class=>"Message"},$self->nbsp($answerMessage)) : ""; 257 push @tableRows, $row; 258 } 259 260 # render equation images 261 $imgGen->render(refresh => 1); 262 263 # my $numIncorrectNoun = scalar @answerNames == 1 ? "question" : "questions"; 264 my $scorePercent = sprintf("%.0f%%", $problemResult->{score} * 100); 265 # FIXME -- I left the old code in in case we have to back out. 266 # my $summary = "On this attempt, you answered $numCorrect out of " 267 # . scalar @answerNames . " $numIncorrectNoun correct, for a score of $scorePercent."; 268 my $summary = ""; 269 unless (defined($problemResult->{summary}) and $problemResult->{summary} =~ /\S/) { 270 if (scalar @answerNames == 1) { #default messages 271 if ($numCorrect == scalar @answerNames) { 272 $summary .= CGI::div({class=>"ResultsWithoutError"},"The above answer is correct."); 273 } else { 274 $summary .= CGI::div({class=>"ResultsWithError"},"The above answer is NOT ${fully}correct."); 275 } 276 } else { 277 if ($numCorrect == scalar @answerNames) { 278 $summary .= CGI::div({class=>"ResultsWithoutError"},"All of the above answers are correct."); 279 } 280 unless ($numCorrect + $numBlanks == scalar( @answerNames)) { 281 $summary .= CGI::div({class=>"ResultsWithError"},"At least one of the above answers is NOT ${fully}correct."); 282 } 283 if ($numBlanks) { 284 my $s = ($numBlanks>1)?'':'s'; 285 $summary .= CGI::div({class=>"ResultsAlert"},"$numBlanks of the questions remain$s unanswered."); 286 } 287 } 288 } else { 289 $summary = $problemResult->{summary}; # summary has been defined by grader 290 } 291 return 292 CGI::table({-class=>"attemptResults"}, CGI::Tr(\@tableRows)) 293 . ($showSummary ? CGI::p({class=>'emphasis'},$summary) : ""); 294 } 295 296 297 # Note: previewAnswer is lifted into GatewayQuiz.pm 298 299 sub previewAnswer { 300 my ($self, $answerResult, $imgGen, $tthPreambleCache) = @_; 301 my $ce = $self->r->ce; 302 my $effectiveUser = $self->{effectiveUser}; 303 my $set = $self->{set}; 304 my $problem = $self->{problem}; 305 my $displayMode = $self->{displayMode}; 306 307 # note: right now, we have to do things completely differently when we are 308 # rendering math from INSIDE the translator and from OUTSIDE the translator. 309 # so we'll just deal with each case explicitly here. there's some code 310 # duplication that can be dealt with later by abstracting out tth/dvipng/etc. 311 312 my $tex = $answerResult->{preview_latex_string}; 313 314 return "" unless defined $tex and $tex ne ""; 315 316 if ($displayMode eq "plainText") { 317 return $tex; 318 } elsif ($displayMode eq "formattedText") { 319 320 # read the TTH preamble, or use the cached copy passed in from the caller 321 my $tthPreamble; 322 if (defined $$tthPreambleCache) { 323 $tthPreamble = $$tthPreambleCache; 324 } else { 325 my $tthPreambleFile = $ce->{courseDirs}->{templates} . "/tthPreamble.tex"; 326 if (-r $tthPreambleFile) { 327 $tthPreamble = readFile($tthPreambleFile); 328 # thanks to Jim Martino. each line in the definition file should end with 329 #a % to prevent adding supurious paragraphs to output: 330 $tthPreamble =~ s/(.)\n/$1%\n/g; 331 # solves the problem if the file doesn't end with a return: 332 $tthPreamble .="%\n"; 333 # store preamble in cache: 334 $$tthPreambleCache = $tthPreamble; 335 } else { 336 } 337 } 338 339 # construct TTH command line 340 my $tthCommand = $ce->{externalPrograms}->{tth} 341 . " -L -f5 -u -r 2> /dev/null <<END_OF_INPUT; echo > /dev/null\n" 342 . $tthPreamble . "\\[" . $tex . "\\]\n" 343 . "END_OF_INPUT\n"; 344 345 # call tth 346 my $result = `$tthCommand`; 347 if ($?) { 348 return "<b>[tth failed: $? $@]</b>"; 349 } else { 350 # avoid border problems in tables and remove unneeded initial <br> 351 $result =~ s/(<table [^>]*)>/$1 CLASS="ArrayLayout">/gi; 352 $result =~ s!\s*<br clear="all" />!!; 353 return $result; 354 } 355 356 } elsif ($displayMode eq "images") { 357 $imgGen->add($tex); 358 } elsif ($displayMode eq "jsMath") { 359 return '<SPAN CLASS="math">\\displaystyle{'.$tex.'}</SPAN>'; 360 } 361 } 362 363 ################################################################################ 364 # Template escape implementations 365 ################################################################################ 366 367 sub pre_header_initialize { 368 my ($self) = @_; 369 my $r = $self->r; 370 my $ce = $r->ce; 371 my $db = $r->db; 372 my $authz = $r->authz; 373 my $urlpath = $r->urlpath; 374 375 my $setName = $urlpath->arg("setID"); 376 my $problemNumber = $r->urlpath->arg("problemID"); 377 my $userName = $r->param('user'); 378 my $effectiveUserName = $r->param('effectiveUser'); 379 my $key = $r->param('key'); 380 381 my $user = $db->getUser($userName); # checked 382 die "record for user $userName (real user) does not exist." 383 unless defined $user; 384 385 my $effectiveUser = $db->getUser($effectiveUserName); # checked 386 die "record for user $effectiveUserName (effective user) does not exist." 387 unless defined $effectiveUser; 388 389 # obtain the merged set for $effectiveUser 390 my $set = $db->getMergedSet($effectiveUserName, $setName); # checked 391 392 # gateway check here: we want to be sure that someone isn't trying to take 393 # a GatewayQuiz through the regular problem/homework mechanism, thereby 394 # circumventing the versioning, time limits, etc. 395 die('Invalid access attempt: the Problem ContentGenerator was called ' . 396 'for a GatewayQuiz assignment.') 397 if ( defined($set) && defined( $set->assignment_type() ) && 398 $set->assignment_type() =~ /gateway/ ); 399 400 # Database fix (in case of undefined published values) 401 # this is only necessary because some people keep holding to ww1.9 which did not have a published field 402 # make sure published is set to 0 or 1 403 if ( $set and $set->published ne "0" and $set->published ne "1") { 404 my $globalSet = $db->getGlobalSet($set->set_id); 405 $globalSet->published("1"); # defaults to published 406 $db->putGlobalSet($globalSet); 407 $set = $db->getMergedSet($effectiveUserName, $setName); 408 } else { 409 # don't do anything just yet, maybe we're a professor and we're 410 # fabricating a set or haven't assigned it to ourselves just yet 411 } 412 413 # obtain the merged problem for $effectiveUser 414 my $problem = $db->getMergedProblem($effectiveUserName, $setName, $problemNumber); # checked 415 416 my $editMode = $r->param("editMode"); 417 418 if ($authz->hasPermissions($userName, "modify_problem_sets")) { 419 # professors are allowed to fabricate sets and problems not 420 # assigned to them (or anyone). this allows them to use the 421 # editor to 422 423 # if a User Set does not exist for this user and this set 424 # then we check the Global Set 425 # if that does not exist we create a fake set 426 # if it does, we add fake user data 427 unless (defined $set) { 428 my $userSetClass = $db->{set_user}->{record}; 429 my $globalSet = $db->getGlobalSet($setName); # checked 430 431 if (not defined $globalSet) { 432 $set = fake_set($db); 433 } else { 434 $set = global2user($userSetClass, $globalSet); 435 $set->psvn(0); 436 } 437 } 438 439 # if that is not yet defined obtain the global problem, 440 # convert it to a user problem, and add fake user data 441 unless (defined $problem) { 442 my $userProblemClass = $db->{problem_user}->{record}; 443 my $globalProblem = $db->getGlobalProblem($setName, $problemNumber); # checked 444 # if the global problem doesn't exist either, bail! 445 if(not defined $globalProblem) { 446 my $sourceFilePath = $r->param("sourceFilePath"); 447 # These are problems from setmaker. If declared invalid, they won't come up 448 $self->{invalidProblem} = $self->{invalidSet} = 1 unless defined $sourceFilePath; 449 # die "Problem $problemNumber in set $setName does not exist" unless defined $sourceFilePath; 450 $problem = fake_problem($db); 451 $problem->problem_id(1); 452 $problem->source_file($sourceFilePath); 453 $problem->user_id($effectiveUserName); 454 } else { 455 $problem = global2user($userProblemClass, $globalProblem); 456 $problem->user_id($effectiveUserName); 457 $problem->problem_seed(0); 458 $problem->status(0); 459 $problem->attempted(0); 460 $problem->last_answer(""); 461 $problem->num_correct(0); 462 $problem->num_incorrect(0); 463 } 464 } 465 466 # now we're sure we have valid UserSet and UserProblem objects 467 # yay! 468 469 # now deal with possible editor overrides: 470 471 # if the caller is asking to override the source file, and 472 # editMode calls for a temporary file, do so 473 my $sourceFilePath = $r->param("sourceFilePath"); 474 if (defined $sourceFilePath and 475 (not defined $editMode or $editMode eq "temporaryFile")) { 476 $problem->source_file($sourceFilePath); 477 } 478 479 # if the problem does not have a source file or no source file has been passed in 480 # then this is really an invalid problem (probably from a bad URL) 481 $self->{invalidProblem} = not (defined $sourceFilePath or $problem->source_file); 482 483 # if the caller is asking to override the problem seed, do so 484 my $problemSeed = $r->param("problemSeed"); 485 if (defined $problemSeed) { 486 $problem->problem_seed($problemSeed); 487 } 488 489 my $publishedClass = ($set->published) ? "Published" : "Unpublished"; 490 my $publishedText = ($set->published) ? "visible to students." : "hidden from students."; 491 $self->addmessage(CGI::p("This set is " . CGI::font({class=>$publishedClass}, $publishedText))); 492 493 # test for additional set validity if it's not already invalid 494 } else { 495 # A set is valid if it exists and if it is either published or the user is privileged. 496 $self->{invalidSet} = !(defined $set and ($set->published || $authz->hasPermissions($userName, "view_unpublished_sets"))); 497 $self->{invalidProblem} = !(defined $problem and ($set->published || $authz->hasPermissions($userName, "view_unpublished_sets"))); 498 499 $self->addbadmessage(CGI::p("This problem will not count towards your grade.")) if $problem and not $problem->value and not $self->{invalidProblem}; 500 } 501 502 $self->{userName} = $userName; 503 $self->{effectiveUserName} = $effectiveUserName; 504 $self->{user} = $user; 505 $self->{effectiveUser} = $effectiveUser; 506 $self->{set} = $set; 507 $self->{problem} = $problem; 508 $self->{editMode} = $editMode; 509 510 ##### form processing ##### 511 512 # set options from form fields (see comment at top of file for names) 513 my $displayMode = $r->param("displayMode") || $ce->{pg}->{options}->{displayMode}; 514 my $redisplay = $r->param("redisplay"); 515 my $submitAnswers = $r->param("submitAnswers"); 516 my $checkAnswers = $r->param("checkAnswers"); 517 my $previewAnswers = $r->param("previewAnswers"); 518 519 my $formFields = { WeBWorK::Form->new_from_paramable($r)->Vars }; 520 521 $self->{displayMode} = $displayMode; 522 $self->{redisplay} = $redisplay; 523 $self->{submitAnswers} = $submitAnswers; 524 $self->{checkAnswers} = $checkAnswers; 525 $self->{previewAnswers} = $previewAnswers; 526 $self->{formFields} = $formFields; 527 528 # get result and send to message 529 my $status_message = $r->param("status_message"); 530 $self->addmessage(CGI::p("$status_message")) if $status_message; 531 532 # now that we've set all the necessary variables quit out if the set or problem is invalid 533 return if $self->{invalidSet} || $self->{invalidProblem}; 534 535 ##### permissions ##### 536 537 # are we allowed to view this problem? 538 $self->{isOpen} = after($set->open_date) || $authz->hasPermissions($userName, "view_unopened_sets"); 539 return unless $self->{isOpen}; 540 541 # what does the user want to do? 542 #FIXME There is a problem with checkboxes -- if they are not checked they are invisible. Hence if the default mode in $ce is 1 543 # there is no way to override this. Probably this is ok for the last three options, but it was definitely not ok for showing 544 # saved answers which is normally on, but you want to be able to turn it off! This section should be moved to ContentGenerator 545 # so that you can set these options anywhere. We also need mechanisms for making them sticky. 546 my %want = ( 547 showOldAnswers => defined($r->param("showOldAnswers")) ? $r->param("showOldAnswers") : $ce->{pg}->{options}->{showOldAnswers}, 548 showCorrectAnswers => $r->param("showCorrectAnswers") || $ce->{pg}->{options}->{showCorrectAnswers}, 549 showHints => $r->param("showHints") || $ce->{pg}->{options}->{showHints}, 550 showSolutions => $r->param("showSolutions") || $ce->{pg}->{options}->{showSolutions}, 551 recordAnswers => $submitAnswers, 552 checkAnswers => $checkAnswers, 553 getSubmitButton => 1, 554 ); 555 556 # are certain options enforced? 557 my %must = ( 558 showOldAnswers => 0, 559 showCorrectAnswers => 0, 560 showHints => 0, 561 showSolutions => 0, 562 recordAnswers => ! $authz->hasPermissions($userName, "avoid_recording_answers"), 563 checkAnswers => 0, 564 getSubmitButton => 0, 565 ); 566 567 # does the user have permission to use certain options? 568 my @args = ($user, $effectiveUser, $set, $problem); 569 my %can = ( 570 showOldAnswers => $self->can_showOldAnswers(@args), 571 showCorrectAnswers => $self->can_showCorrectAnswers(@args), 572 showHints => $self->can_showHints(@args), 573 showSolutions => $self->can_showSolutions(@args), 574 recordAnswers => $self->can_recordAnswers(@args, 0), 575 checkAnswers => $self->can_checkAnswers(@args, $submitAnswers), 576 getSubmitButton => $self->can_recordAnswers(@args, $submitAnswers), 577 ); 578 579 # final values for options 580 my %will; 581 foreach (keys %must) { 582 $will{$_} = $can{$_} && ($want{$_} || $must{$_}); 583 } 584 585 ##### sticky answers ##### 586 587 if (not ($submitAnswers or $previewAnswers or $checkAnswers) and $will{showOldAnswers}) { 588 # do this only if new answers are NOT being submitted 589 my %oldAnswers = decodeAnswers($problem->last_answer); 590 $formFields->{$_} = $oldAnswers{$_} foreach keys %oldAnswers; 591 } 592 593 ##### translation ##### 594 595 $WeBWorK::timer->continue("begin pg processing") if defined($WeBWorK::timer); 596 my $pg = WeBWorK::PG->new( 597 $ce, 598 $effectiveUser, 599 $key, 600 $set, 601 $problem, 602 $set->psvn, # FIXME: this field should be removed 603 $formFields, 604 { # translation options 605 displayMode => $displayMode, 606 showHints => $will{showHints}, 607 showSolutions => $will{showSolutions}, 608 refreshMath2img => $will{showHints} || $will{showSolutions}, 609 processAnswers => 1, 610 }, 611 ); 612 613 $WeBWorK::timer->continue("end pg processing") if defined($WeBWorK::timer); 614 615 ##### fix hint/solution options ##### 616 617 $can{showHints} &&= $pg->{flags}->{hintExists} 618 &&= $pg->{flags}->{showHintLimit}<=$pg->{state}->{num_of_incorrect_ans}; 619 $can{showSolutions} &&= $pg->{flags}->{solutionExists}; 620 621 ##### store fields ##### 622 623 $self->{want} = \%want; 624 $self->{must} = \%must; 625 $self->{can} = \%can; 626 $self->{will} = \%will; 627 $self->{pg} = $pg; 628 } 629 630 sub if_errors($$) { 631 my ($self, $arg) = @_; 632 633 if ($self->{isOpen}) { 634 return $self->{pg}->{flags}->{error_flag} ? $arg : !$arg; 635 } else { 636 return !$arg; 637 } 638 } 639 640 sub head { 641 my ($self) = @_; 642 643 return "" unless $self->{isOpen}; 644 return $self->{pg}->{head_text} if $self->{pg}->{head_text}; 645 } 646 647 # sub options { 648 # my ($self) = @_; 649 # warn "doing options in Problem"; 650 # return "" if $self->{invalidProblem}; 651 # my $sourceFilePathfield = ''; 652 # if($self->r->param("sourceFilePath")) { 653 # $sourceFilePathfield = CGI::hidden(-name => "sourceFilePath", 654 # -value => $self->r->param("sourceFilePath")); 655 # } 656 # 657 # return join("", 658 # CGI::start_form("POST", $self->{r}->uri), 659 # $self->hidden_authen_fields, 660 # $sourceFilePathfield, 661 # CGI::hr(), 662 # CGI::start_div({class=>"viewOptions"}), 663 # $self->viewOptions(), 664 # CGI::end_div(), 665 # CGI::end_form() 666 # ); 667 # } 668 669 sub siblings { 670 my ($self) = @_; 671 my $r = $self->r; 672 my $db = $r->db; 673 my $urlpath = $r->urlpath; 674 675 # can't show sibling problems if the set is invalid 676 return "" if $self->{invalidSet}; 677 678 my $courseID = $urlpath->arg("courseID"); 679 my $setID = $self->{set}->set_id; 680 my $eUserID = $r->param("effectiveUser"); 681 my @problemIDs = sort { $a <=> $b } $db->listUserProblems($eUserID, $setID); 682 683 print CGI::start_ul({class=>"LinksMenu"}); 684 print CGI::start_li(); 685 print CGI::span({style=>"font-size:larger"}, "Problems"); 686 print CGI::start_ul(); 687 688 foreach my $problemID (@problemIDs) { 689 my $problemPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Problem", 690 courseID => $courseID, setID => $setID, problemID => $problemID); 691 print CGI::li(CGI::a( {href=>$self->systemLink($problemPage, 692 params=>{ displayMode => $self->{displayMode}, 693 showOldAnswers => $self->{will}->{showOldAnswers} 694 })}, "Problem $problemID") 695 ); 696 } 697 698 print CGI::end_ul(); 699 print CGI::end_li(); 700 print CGI::end_ul(); 701 702 return ""; 703 } 704 705 sub nav { 706 my ($self, $args) = @_; 707 my $r = $self->r; 708 my $db = $r->db; 709 my $urlpath = $r->urlpath; 710 711 my $courseID = $urlpath->arg("courseID"); 712 my $setID = $self->{set}->set_id if !($self->{invalidSet}); 713 my $problemID = $self->{problem}->problem_id if !($self->{invalidProblem}); 714 my $eUserID = $r->param("effectiveUser"); 715 716 my ($prevID, $nextID); 717 718 if (!$self->{invalidProblem}) { 719 my @problemIDs = $db->listUserProblems($eUserID, $setID); 720 foreach my $id (@problemIDs) { 721 $prevID = $id if $id < $problemID 722 and (not defined $prevID or $id > $prevID); 723 $nextID = $id if $id > $problemID 724 and (not defined $nextID or $id < $nextID); 725 } 726 } 727 728 my @links; 729 730 if ($prevID) { 731 my $prevPage = $urlpath->newFromModule(__PACKAGE__, 732 courseID => $courseID, setID => $setID, problemID => $prevID); 733 push @links, "Previous Problem", $r->location . $prevPage->path, "navPrev"; 734 } else { 735 push @links, "Previous Problem", "", "navPrev"; 736 } 737 738 push @links, "Problem List", $r->location . $urlpath->parent->path, "navProbList"; 739 740 if ($nextID) { 741 my $nextPage = $urlpath->newFromModule(__PACKAGE__, 742 courseID => $courseID, setID => $setID, problemID => $nextID); 743 push @links, "Next Problem", $r->location . $nextPage->path, "navNext"; 744 } else { 745 push @links, "Next Problem", "", "navNext"; 746 } 747 748 my $tail = "&displayMode=".$self->{displayMode}."&showOldAnswers=".$self->{will}->{showOldAnswers}; 749 return $self->navMacro($args, $tail, @links); 750 } 751 752 sub title { 753 my ($self) = @_; 754 755 # using the url arguments won't break if the set/problem are invalid 756 my $setID = $self->r->urlpath->arg("setID"); 757 my $problemID = $self->r->urlpath->arg("problemID"); 758 759 return "$setID: Problem $problemID"; 760 } 761 762 sub body { 763 my $self = shift; 764 my $r = $self->r; 765 my $ce = $r->ce; 766 my $db = $r->db; 767 my $authz = $r->authz; 768 my $urlpath = $r->urlpath; 769 my $user = $r->param('user'); 770 my $effectiveUser = $r->param('effectiveUser'); 771 772 if ($self->{invalidSet}) { 773 return CGI::div({class=>"ResultsWithError"}, 774 CGI::p("The selected homework set (" . $urlpath->arg("setID") . ") is not a valid set for " . $r->param("effectiveUser") . ".")); 775 } 776 777 if ($self->{invalidProblem}) { 778 return CGI::div({class=>"ResultsWithError"}, 779 CGI::p("The selected problem (" . $urlpath->arg("problemID") . ") is not a valid problem for set " . $self->{set}->set_id . ".")); 780 } 781 782 unless ($self->{isOpen}) { 783 return CGI::div({class=>"ResultsWithError"}, 784 CGI::p("This problem is not available because the homework set that contains it is not yet open.")); 785 } 786 # unpack some useful variables 787 my $set = $self->{set}; 788 my $problem = $self->{problem}; 789 my $editMode = $self->{editMode}; 790 my $submitAnswers = $self->{submitAnswers}; 791 my $checkAnswers = $self->{checkAnswers}; 792 my $previewAnswers = $self->{previewAnswers}; 793 my %want = %{ $self->{want} }; 794 my %can = %{ $self->{can} }; 795 my %must = %{ $self->{must} }; 796 my %will = %{ $self->{will} }; 797 my $pg = $self->{pg}; 798 799 my $courseName = $urlpath->arg("courseID"); 800 801 # FIXME: move editor link to top, next to problem number. 802 # format as "[edit]" like we're doing with course info file, etc. 803 # add edit link for set as well. 804 my $editorLink = ""; 805 # if we are here without a real problem set, carry that through 806 my $forced_field = []; 807 $forced_field = ['sourceFilePath' => $r->param("sourceFilePath")] if 808 ($set->set_id eq 'Undefined_Set'); 809 if ($authz->hasPermissions($user, "modify_problem_sets")) { 810 my $editorPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::PGProblemEditor", 811 courseID => $courseName, setID => $set->set_id, problemID => $problem->problem_id); 812 my $editorURL = $self->systemLink($editorPage, params=>$forced_field); 813 $editorLink = CGI::a({href=>$editorURL}, "Edit this problem"); 814 } 815 816 ##### translation errors? ##### 817 818 if ($pg->{flags}->{error_flag}) { 819 print $self->errorOutput($pg->{errors}, $pg->{body_text}); 820 print $editorLink; 821 return ""; 822 } 823 824 ##### answer processing ##### 825 $WeBWorK::timer->continue("begin answer processing") if defined($WeBWorK::timer); 826 # if answers were submitted: 827 my $scoreRecordedMessage; 828 my $pureProblem; 829 if ($submitAnswers) { 830 # get a "pure" (unmerged) UserProblem to modify 831 # this will be undefined if the problem has not been assigned to this user 832 $pureProblem = $db->getUserProblem($problem->user_id, $problem->set_id, $problem->problem_id); # checked 833 if (defined $pureProblem) { 834 # store answers in DB for sticky answers 835 my %answersToStore; 836 my %answerHash = %{ $pg->{answers} }; 837 $answersToStore{$_} = $self->{formFields}->{$_} #$answerHash{$_}->{original_student_ans} -- this may have been modified for fields with multiple values. Don't use it!! 838 foreach (keys %answerHash); 839 840 # There may be some more answers to store -- one which are auxiliary entries to a primary answer. Evaluating 841 # matrices works in this way, only the first answer triggers an answer evaluator, the rest are just inputs 842 # however we need to store them. Fortunately they are still in the input form. 843 my @extra_answer_names = @{ $pg->{flags}->{KEPT_EXTRA_ANSWERS}}; 844 $answersToStore{$_} = $self->{formFields}->{$_} foreach (@extra_answer_names); 845 846 # Now let's encode these answers to store them -- append the extra answers to the end of answer entry order 847 my @answer_order = (@{$pg->{flags}->{ANSWER_ENTRY_ORDER}}, @extra_answer_names); 848 my $answerString = encodeAnswers(%answersToStore, 849 @answer_order); 850 851 # store last answer to database 852 $problem->last_answer($answerString); 853 $pureProblem->last_answer($answerString); 854 $db->putUserProblem($pureProblem); 855 856 # store state in DB if it makes sense 857 if ($will{recordAnswers}) { 858 $problem->status($pg->{state}->{recorded_score}); 859 $problem->attempted(1); 860 $problem->num_correct($pg->{state}->{num_of_correct_ans}); 861 $problem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 862 $pureProblem->status($pg->{state}->{recorded_score}); 863 $pureProblem->attempted(1); 864 $pureProblem->num_correct($pg->{state}->{num_of_correct_ans}); 865 $pureProblem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 866 if ($db->putUserProblem($pureProblem)) { 867 $scoreRecordedMessage = "Your score was recorded."; 868 } else { 869 $scoreRecordedMessage = "Your score was not recorded because there was a failure in storing the problem record to the database."; 870 } 871 # write to the transaction log, just to make sure 872 writeLog($self->{ce}, "transaction", 873 $problem->problem_id."\t". 874 $problem->set_id."\t". 875 $problem->user_id."\t". 876 $problem->source_file."\t". 877 $problem->value."\t". 878 $problem->max_attempts."\t". 879 $problem->problem_seed."\t". 880 $pureProblem->status."\t". 881 $pureProblem->attempted."\t". 882 $pureProblem->last_answer."\t". 883 $pureProblem->num_correct."\t". 884 $pureProblem->num_incorrect 885 ); 886 } else { 887 if (before($set->open_date) or after($set->due_date)) { 888 $scoreRecordedMessage = "Your score was not recorded because this homework set is closed."; 889 } else { 890 $scoreRecordedMessage = "Your score was not recorded."; 891 } 892 } 893 } else { 894 $scoreRecordedMessage = "Your score was not recorded because this problem has not been assigned to you."; 895 } 896 } 897 898 # logging student answers 899 900 my $answer_log = $self->{ce}->{courseFiles}->{logs}->{'answer_log'}; 901 if ( defined($answer_log ) and defined($pureProblem)) { 902 if ($submitAnswers && !$authz->hasPermissions($effectiveUser, "dont_log_past_answers")) { 903 my $answerString = ""; my $scores = ""; 904 my %answerHash = %{ $pg->{answers} }; 905 # FIXME this is the line 552 error. make sure original student ans is defined. 906 # The fact that it is not defined is probably due to an error in some answer evaluator. 907 # But I think it is useful to suppress this error message in the log. 908 foreach (sort keys %answerHash) { 909 my $orig_ans = $answerHash{$_}->{original_student_ans}; 910 my $student_ans = defined $orig_ans ? $orig_ans : ''; 911 $answerString .= $student_ans."\t"; 912 $scores .= $answerHash{$_}->{score} >= 1 ? "1" : "0"; 913 } 914 $answerString = '' unless defined($answerString); # insure string is defined. 915 writeCourseLog($self->{ce}, "answer_log", 916 join("", 917 '|', $problem->user_id, 918 '|', $problem->set_id, 919 '|', $problem->problem_id, 920 '|', $scores, "\t", 921 time(),"\t", 922 $answerString, 923 ), 924 ); 925 926 } 927 } 928 929 $WeBWorK::timer->continue("end answer processing") if defined($WeBWorK::timer); 930 931 ##### output ##### 932 # custom message for editor 933 if ($authz->hasPermissions($user, "modify_problem_sets") and defined $editMode) { 934 if ($editMode eq "temporaryFile") { 935 print CGI::p(CGI::div({class=>'temporaryFile'}, "Viewing temporary file: ", $problem->source_file)); 936 } elsif ($editMode eq "savedFile") { 937 # taken care of in the initialization phase 938 } 939 } 940 print CGI::start_div({class=>"problemHeader"}); 941 942 943 944 # attempt summary 945 #FIXME -- the following is a kludge: if showPartialCorrectAnswers is negative don't show anything. 946 # until after the due date 947 # do I need to check $will{showCorrectAnswers} to make preflight work?? 948 if (($pg->{flags}->{showPartialCorrectAnswers} >= 0 and $submitAnswers) ) { 949 # print this if user submitted answers OR requested correct answers 950 951 print $self->attemptResults($pg, 1, 952 $will{showCorrectAnswers}, 953 $pg->{flags}->{showPartialCorrectAnswers}, 1, 1); 954 } elsif ($checkAnswers) { 955 # print this if user previewed answers 956 print CGI::div({class=>'ResultsWithError'},"ANSWERS ONLY CHECKED -- ANSWERS NOT RECORDED"), CGI::br(); 957 print $self->attemptResults($pg, 1, $will{showCorrectAnswers}, 1, 1, 1); 958 # show attempt answers 959 # show correct answers if asked 960 # show attempt results (correctness) 961 # show attempt previews 962 } elsif ($previewAnswers) { 963 # print this if user previewed answers 964 print CGI::div({class=>'ResultsWithError'},"PREVIEW ONLY -- ANSWERS NOT RECORDED"),CGI::br(),$self->attemptResults($pg, 1, 0, 0, 0, 1); 965 # show attempt answers 966 # don't show correct answers 967 # don't show attempt results (correctness) 968 # show attempt previews 969 } 970 971 print CGI::end_div(); 972 973 # main form 974 print CGI::startform("POST", $r->uri); 975 print $self->hidden_authen_fields; 976 977 print CGI::start_div({class=>"problem"}); 978 print CGI::p($pg->{body_text}); 979 print CGI::p(CGI::b("Note: "), CGI::i($pg->{result}->{msg})) if $pg->{result}->{msg}; 980 print CGI::end_div(); 981 982 print CGI::start_p(); 983 984 if ($can{showCorrectAnswers}) { 985 print CGI::checkbox( 986 -name => "showCorrectAnswers", 987 -checked => $will{showCorrectAnswers}, 988 -label => "Show correct answers", 989 ); 990 } 991 if ($can{showHints}) { 992 print CGI::div({style=>"color:red"}, 993 CGI::checkbox( 994 -name => "showHints", 995 -checked => $will{showHints}, 996 -label => "Show Hints", 997 ) 998 ); 999 } 1000 if ($can{showSolutions}) { 1001 print CGI::checkbox( 1002 -name => "showSolutions", 1003 -checked => $will{showSolutions}, 1004 -label => "Show Solutions", 1005 ); 1006 } 1007 1008 if ($can{showCorrectAnswers} or $can{showHints} or $can{showSolutions}) { 1009 print CGI::br(); 1010 } 1011 1012 print CGI::submit(-name=>"previewAnswers", -label=>"Preview Answers"); 1013 if ($can{checkAnswers}) { 1014 print CGI::submit(-name=>"checkAnswers", -label=>"Check Answers"); 1015 } 1016 if ($can{getSubmitButton}) { 1017 if ($user ne $effectiveUser) { 1018 # if acting as a student, make it clear that answer submissions will 1019 # apply to the student's records, not the professor's. 1020 print CGI::submit(-name=>"submitAnswers", -label=>"Submit Answers for $effectiveUser"); 1021 } else { 1022 print CGI::submit(-name=>"submitAnswers", -label=>"Submit Answers"); 1023 } 1024 } 1025 1026 print CGI::end_p(); 1027 1028 print CGI::start_div({class=>"scoreSummary"}); 1029 1030 # score summary 1031 my $attempts = $problem->num_correct + $problem->num_incorrect; 1032 my $attemptsNoun = $attempts != 1 ? "times" : "time"; 1033 my $problem_status = $problem->status || 0; 1034 my $lastScore = sprintf("%.0f%%", $problem_status * 100); # Round to whole number 1035 my ($attemptsLeft, $attemptsLeftNoun); 1036 if ($problem->max_attempts == -1) { 1037 # unlimited attempts 1038 $attemptsLeft = "unlimited"; 1039 $attemptsLeftNoun = "attempts"; 1040 } else { 1041 $attemptsLeft = $problem->max_attempts - $attempts; 1042 $attemptsLeftNoun = $attemptsLeft == 1 ? "attempt" : "attempts"; 1043 } 1044 1045 my $setClosed = 0; 1046 my $setClosedMessage; 1047 if (before($set->open_date) or after($set->due_date)) { 1048 $setClosed = 1; 1049 if (before($set->open_date)) { 1050 $setClosedMessage = "This homework set is not yet open."; 1051 } elsif (after($set->due_date)) { 1052 $setClosedMessage = "This homework set is closed."; 1053 } 1054 } 1055 #if (before($set->open_date) or after($set->due_date)) { 1056 # $setClosed = 1; 1057 # $setClosedMessage = "This homework set is closed."; 1058 # if ($authz->hasPermissions($user, "view_answers")) { 1059 # $setClosedMessage .= " However, since you are a privileged user, additional attempts will be recorded."; 1060 # } else { 1061 # $setClosedMessage .= " Additional attempts will not be recorded."; 1062 # } 1063 #} 1064 unless (defined( $pg->{state}->{state_summary_msg}) and $pg->{state}->{state_summary_msg}=~/\S/) { 1065 my $notCountedMessage = ($problem->value) ? "" : "(This problem will not count towards your grade.)"; 1066 print CGI::p( 1067 $submitAnswers ? $scoreRecordedMessage . CGI::br() : "", 1068 "You have attempted this problem $attempts $attemptsNoun.", CGI::br(), 1069 $submitAnswers ?"You received a score of ".sprintf("%.0f%%", $pg->{result}->{score} * 100)." for this attempt.".CGI::br():'', 1070 $problem->attempted 1071 ? "Your overall recorded score is $lastScore. $notCountedMessage" . CGI::br() 1072 : "", 1073 $setClosed ? $setClosedMessage : "You have $attemptsLeft $attemptsLeftNoun remaining." 1074 ); 1075 }else { 1076 print CGI::p($pg->{state}->{state_summary_msg}); 1077 } 1078 print CGI::end_div(); 1079 1080 # save state for viewOptions 1081 print CGI::hidden( 1082 -name => "showOldAnswers", 1083 -value => $will{showOldAnswers} 1084 ), 1085 1086 CGI::hidden( 1087 -name => "displayMode", 1088 -value => $self->{displayMode} 1089 ); 1090 print( CGI::hidden( 1091 -name => 'editMode', 1092 -value => $self->{editMode}, 1093 ) 1094 ) if defined($self->{editMode}) and $self->{editMode} eq 'temporaryFile'; 1095 print( CGI::hidden( 1096 -name => 'sourceFilePath', 1097 -value => $self->{problem}->{source_file} 1098 )) if defined($self->{problem}->{source_file}); 1099 1100 print( CGI::hidden( 1101 -name => 'problemSeed', 1102 -value => $r->param("problemSeed") 1103 )) if defined($r->param("problemSeed")); 1104 1105 # end of main form 1106 print CGI::endform(); 1107 1108 print CGI::start_div({class=>"problemFooter"}); 1109 1110 ## arguments for answer inspection button 1111 #my $prof_url = $ce->{webworkURLs}->{oldProf}; 1112 #my $webworkURL = $ce->{webworkURLs}->{root}; 1113 #my $cgi_url = $prof_url; 1114 #$cgi_url=~ s|/[^/]*$||; # clip profLogin.pl 1115 #my $authen_args = $self->url_authen_args(); 1116 #my $showPastAnswersURL = "$webworkURL/$courseName/instructor/show_answers/"; 1117 1118 my $pastAnswersPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::ShowAnswers", 1119 courseID => $courseName); 1120 my $showPastAnswersURL = $self->systemLink($pastAnswersPage, authen => 0); # no authen info for form action 1121 1122 # print answer inspection button 1123 if ($authz->hasPermissions($user, "view_answers")) { 1124 print "\n", 1125 CGI::start_form(-method=>"POST",-action=>$showPastAnswersURL,-target=>"information"),"\n", 1126 $self->hidden_authen_fields,"\n", 1127 CGI::hidden(-name => 'courseID', -value=>$courseName), "\n", 1128 CGI::hidden(-name => 'problemID', -value=>$problem->problem_id), "\n", 1129 CGI::hidden(-name => 'setID', -value=>$problem->set_id), "\n", 1130 CGI::hidden(-name => 'studentUser', -value=>$problem->user_id), "\n", 1131 CGI::p( {-align=>"left"}, 1132 CGI::submit(-name => 'action', -value=>'Show Past Answers') 1133 ), "\n", 1134 CGI::endform(); 1135 } 1136 1137 # feedback form url 1138 my $feedbackPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Feedback", 1139 courseID => $courseName); 1140 my $feedbackURL = $self->systemLink($feedbackPage, authen => 0); # no authen info for form action 1141 1142 #print feedback form 1143 print 1144 CGI::start_form(-method=>"POST", -action=>$feedbackURL),"\n", 1145 $self->hidden_authen_fields,"\n", 1146 CGI::hidden("module", __PACKAGE__),"\n", 1147 CGI::hidden("set", $set->set_id),"\n", 1148 CGI::hidden("problem", $problem->problem_id),"\n", 1149 CGI::hidden("displayMode", $self->{displayMode}),"\n", 1150 CGI::hidden("showOldAnswers", $will{showOldAnswers}),"\n", 1151 CGI::hidden("showCorrectAnswers", $will{showCorrectAnswers}),"\n", 1152 CGI::hidden("showHints", $will{showHints}),"\n", 1153 CGI::hidden("showSolutions", $will{showSolutions}),"\n", 1154 CGI::p({-align=>"left"}, 1155 CGI::submit(-name=>"feedbackForm", -label=>"Email instructor") 1156 ), 1157 CGI::endform(),"\n"; 1158 1159 # FIXME print editor link 1160 print $editorLink; #empty unless it is appropriate to have an editor link. 1161 1162 print CGI::end_div(); 1163 1164 # debugging stuff 1165 if (0) { 1166 print 1167 CGI::hr(), 1168 CGI::h2("debugging information"), 1169 CGI::h3("form fields"), 1170 ref2string($self->{formFields}), 1171 CGI::h3("user object"), 1172 ref2string($self->{user}), 1173 CGI::h3("set object"), 1174 ref2string($set), 1175 CGI::h3("problem object"), 1176 ref2string($problem), 1177 CGI::h3("PG object"), 1178 ref2string($pg, {'WeBWorK::PG::Translator' => 1}); 1179 } 1180 1181 return ""; 1182 } 1183 1184 1;
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