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use before/after/between from Utils.pm
1 ################################################################################ 2 # WeBWorK Online Homework Delivery System 3 # Copyright © 2000-2006 The WeBWorK Project, http://openwebwork.sf.net/ 4 # $CVSHeader: webwork2/lib/WeBWorK/ContentGenerator/Problem.pm,v 1.204 2006/08/22 18:37:22 dpvc 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(-nosticky ); 29 use WeBWorK::CGI; 30 use File::Path qw(rmtree); 31 use WeBWorK::Debug; 32 use WeBWorK::Form; 33 use WeBWorK::PG; 34 use WeBWorK::PG::ImageGenerator; 35 use WeBWorK::PG::IO; 36 use WeBWorK::Utils qw(readFile writeLog writeCourseLog encodeAnswers decodeAnswers 37 ref2string makeTempDirectory path_is_subdir sortByName before after between); 38 use WeBWorK::DB::Utils qw(global2user user2global findDefaults); 39 use URI::Escape; 40 41 use WeBWorK::Utils::Tasks qw(fake_set fake_problem); 42 43 ################################################################################ 44 # CGI param interface to this module (up-to-date as of v1.153) 45 ################################################################################ 46 47 # Standard params: 48 # 49 # user - user ID of real user 50 # key - session key 51 # effectiveUser - user ID of effective user 52 # 53 # Integration with PGProblemEditor: 54 # 55 # editMode - if set, indicates alternate problem source location. 56 # can be "temporaryFile" or "savedFile". 57 # 58 # sourceFilePath - path to file to be edited 59 # problemSeed - force problem seed to value 60 # success - success message to display 61 # failure - failure message to display 62 # 63 # Rendering options: 64 # 65 # displayMode - name of display mode to use 66 # 67 # showOldAnswers - request that last entered answer be shown (if allowed) 68 # showCorrectAnswers - request that correct answers be shown (if allowed) 69 # showHints - request that hints be shown (if allowed) 70 # showSolutions - request that solutions be shown (if allowed) 71 # 72 # Problem interaction: 73 # 74 # AnSwEr# - answer blanks in problem 75 # 76 # redisplay - name of the "Redisplay Problem" button 77 # submitAnswers - name of "Submit Answers" button 78 # checkAnswers - name of the "Check Answers" button 79 # previewAnswers - name of the "Preview Answers" button 80 81 ################################################################################ 82 # "can" methods 83 ################################################################################ 84 85 # Subroutines to determine if a user "can" perform an action. Each subroutine is 86 # called with the following arguments: 87 # 88 # ($self, $User, $EffectiveUser, $Set, $Problem) 89 90 # Note that significant parts of the "can" methods are lifted into the 91 # GatewayQuiz module. It isn't direct, however, because of the necessity 92 # of dealing with versioning there. 93 94 sub can_showOldAnswers { 95 #my ($self, $User, $EffectiveUser, $Set, $Problem) = @_; 96 97 return 1; 98 } 99 100 sub can_showCorrectAnswers { 101 my ($self, $User, $EffectiveUser, $Set, $Problem) = @_; 102 my $authz = $self->r->authz; 103 104 return 105 after($Set->answer_date) 106 || 107 $authz->hasPermissions($User->user_id, "show_correct_answers_before_answer_date") 108 ; 109 } 110 111 sub can_showHints { 112 #my ($self, $User, $EffectiveUser, $Set, $Problem) = @_; 113 114 return 1; 115 } 116 117 sub can_showSolutions { 118 my ($self, $User, $EffectiveUser, $Set, $Problem) = @_; 119 my $authz = $self->r->authz; 120 121 return 122 after($Set->answer_date) 123 || 124 $authz->hasPermissions($User->user_id, "show_solutions_before_answer_date") 125 ; 126 } 127 128 sub can_recordAnswers { 129 my ($self, $User, $EffectiveUser, $Set, $Problem, $submitAnswers) = @_; 130 my $authz = $self->r->authz; 131 my $thisAttempt = $submitAnswers ? 1 : 0; 132 if ($User->user_id ne $EffectiveUser->user_id) { 133 return $authz->hasPermissions($User->user_id, "record_answers_when_acting_as_student"); 134 } 135 if (before($Set->open_date)) { 136 return $authz->hasPermissions($User->user_id, "record_answers_before_open_date"); 137 } elsif (between($Set->open_date, $Set->due_date)) { 138 my $max_attempts = $Problem->max_attempts; 139 my $attempts_used = $Problem->num_correct + $Problem->num_incorrect + $thisAttempt; 140 if ($max_attempts == -1 or $attempts_used < $max_attempts) { 141 return $authz->hasPermissions($User->user_id, "record_answers_after_open_date_with_attempts"); 142 } else { 143 return $authz->hasPermissions($User->user_id, "record_answers_after_open_date_without_attempts"); 144 } 145 } elsif (between($Set->due_date, $Set->answer_date)) { 146 return $authz->hasPermissions($User->user_id, "record_answers_after_due_date"); 147 } elsif (after($Set->answer_date)) { 148 return $authz->hasPermissions($User->user_id, "record_answers_after_answer_date"); 149 } 150 } 151 152 sub can_checkAnswers { 153 my ($self, $User, $EffectiveUser, $Set, $Problem, $submitAnswers) = @_; 154 my $authz = $self->r->authz; 155 my $thisAttempt = $submitAnswers ? 1 : 0; 156 157 if (before($Set->open_date)) { 158 return $authz->hasPermissions($User->user_id, "check_answers_before_open_date"); 159 } elsif (between($Set->open_date, $Set->due_date)) { 160 my $max_attempts = $Problem->max_attempts; 161 my $attempts_used = $Problem->num_correct + $Problem->num_incorrect + $thisAttempt; 162 if ($max_attempts == -1 or $attempts_used < $max_attempts) { 163 return $authz->hasPermissions($User->user_id, "check_answers_after_open_date_with_attempts"); 164 } else { 165 return $authz->hasPermissions($User->user_id, "check_answers_after_open_date_without_attempts"); 166 } 167 } elsif (between($Set->due_date, $Set->answer_date)) { 168 return $authz->hasPermissions($User->user_id, "check_answers_after_due_date"); 169 } elsif (after($Set->answer_date)) { 170 return $authz->hasPermissions($User->user_id, "check_answers_after_answer_date"); 171 } 172 } 173 174 # Reset the default in some cases 175 sub set_showOldAnswers_default { 176 my ($self, $ce, $userName, $authz, $set) = @_; 177 # these people always use the system/course default, so don't 178 # override the value of ...->{showOldAnswers} 179 return if $authz->hasPermissions($userName, "can_always_use_show_old_answers_default"); 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/ || $answerScore >= 1; # 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 answer above is correct."); 283 } else { 284 $summary .= CGI::div({class=>"ResultsWithError"},"The answer above is NOT ${fully}correct."); 285 } 286 } else { 287 if ($numCorrect == scalar @answerNames) { 288 $summary .= CGI::div({class=>"ResultsWithoutError"},"All of the answers above are correct."); 289 } 290 unless ($numCorrect + $numBlanks == scalar( @answerNames)) { 291 $summary .= CGI::div({class=>"ResultsWithError"},"At least one of the answers above 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=>'attemptResultsSummary'},$summary) : ""); 304 } 305 306 307 # Note: previewAnswer is lifted into GatewayQuiz.pm 308 309 sub previewAnswer { 310 my ($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 $tex =~ s/</</g; $tex =~ s/>/>/g; 370 return '<SPAN CLASS="math">\\displaystyle{'.$tex.'}</SPAN>'; 371 } 372 } 373 374 ################################################################################ 375 # Template escape implementations 376 ################################################################################ 377 378 sub pre_header_initialize { 379 my ($self) = @_; 380 my $r = $self->r; 381 my $ce = $r->ce; 382 my $db = $r->db; 383 my $authz = $r->authz; 384 my $urlpath = $r->urlpath; 385 386 my $setName = $urlpath->arg("setID"); 387 my $problemNumber = $r->urlpath->arg("problemID"); 388 my $userName = $r->param('user'); 389 my $effectiveUserName = $r->param('effectiveUser'); 390 my $key = $r->param('key'); 391 my $editMode = $r->param("editMode"); 392 393 my $user = $db->getUser($userName); # checked 394 die "record for user $userName (real user) does not exist." 395 unless defined $user; 396 397 my $effectiveUser = $db->getUser($effectiveUserName); # checked 398 die "record for user $effectiveUserName (effective user) does not exist." 399 unless defined $effectiveUser; 400 401 # obtain the merged set for $effectiveUser 402 my $set = $db->getMergedSet($effectiveUserName, $setName); # checked 403 404 $self->set_showOldAnswers_default($ce, $userName, $authz, $set); 405 406 # gateway check here: we want to be sure that someone isn't trying to take 407 # a GatewayQuiz through the regular problem/homework mechanism, thereby 408 # circumventing the versioning, time limits, etc. 409 if (defined $set and defined $set->assignment_type and $set->assignment_type() =~ /gateway/) { 410 unless ($editMode eq "temporaryFile" and $authz->hasPermissions($userName, "modify_student_data")) { 411 die('Invalid access attempt: the Problem ContentGenerator was called for a GatewayQuiz assignment.' ); 412 } 413 } 414 415 # Database fix (in case of undefined published values) 416 # this is only necessary because some people keep holding to ww1.9 which did not have a published field 417 # make sure published is set to 0 or 1 418 if ( $set and $set->published ne "0" and $set->published ne "1") { 419 my $globalSet = $db->getGlobalSet($set->set_id); 420 $globalSet->published("1"); # defaults to published 421 $db->putGlobalSet($globalSet); 422 $set = $db->getMergedSet($effectiveUserName, $setName); 423 } else { 424 # don't do anything just yet, maybe we're a professor and we're 425 # fabricating a set or haven't assigned it to ourselves just yet 426 } 427 428 # obtain the merged problem for $effectiveUser 429 my $problem = $db->getMergedProblem($effectiveUserName, $setName, $problemNumber); # checked 430 431 if ($authz->hasPermissions($userName, "modify_problem_sets")) { 432 # professors are allowed to fabricate sets and problems not 433 # assigned to them (or anyone). this allows them to use the 434 # editor to 435 436 # if a User Set does not exist for this user and this set 437 # then we check the Global Set 438 # if that does not exist we create a fake set 439 # if it does, we add fake user data 440 unless (defined $set) { 441 my $userSetClass = $db->{set_user}->{record}; 442 my $globalSet = $db->getGlobalSet($setName); # checked 443 444 if (not defined $globalSet) { 445 $set = fake_set($db); 446 } else { 447 $set = global2user($userSetClass, $globalSet); 448 $set->psvn(0); 449 } 450 } 451 452 # if that is not yet defined obtain the global problem, 453 # convert it to a user problem, and add fake user data 454 unless (defined $problem) { 455 my $userProblemClass = $db->{problem_user}->{record}; 456 my $globalProblem = $db->getGlobalProblem($setName, $problemNumber); # checked 457 # if the global problem doesn't exist either, bail! 458 if(not defined $globalProblem) { 459 my $sourceFilePath = $r->param("sourceFilePath"); 460 die "sourceFilePath is unsafe!" unless path_is_subdir($sourceFilePath, $ce->{courseDirs}->{templates}, 1); # 1==path can be relative to dir 461 # These are problems from setmaker. If declared invalid, they won't come up 462 $self->{invalidProblem} = $self->{invalidSet} = 1 unless defined $sourceFilePath; 463 # die "Problem $problemNumber in set $setName does not exist" unless defined $sourceFilePath; 464 $problem = fake_problem($db); 465 $problem->problem_id(1); 466 $problem->source_file($sourceFilePath); 467 $problem->user_id($effectiveUserName); 468 } else { 469 $problem = global2user($userProblemClass, $globalProblem); 470 $problem->user_id($effectiveUserName); 471 $problem->problem_seed(0); 472 $problem->status(0); 473 $problem->attempted(0); 474 $problem->last_answer(""); 475 $problem->num_correct(0); 476 $problem->num_incorrect(0); 477 } 478 } 479 480 # now we're sure we have valid UserSet and UserProblem objects 481 # yay! 482 483 # now deal with possible editor overrides: 484 485 # if the caller is asking to override the source file, and 486 # editMode calls for a temporary file, do so 487 my $sourceFilePath = $r->param("sourceFilePath"); 488 if (defined $editMode and $editMode eq "temporaryFile" and defined $sourceFilePath) { 489 die "sourceFilePath is unsafe!" unless path_is_subdir($sourceFilePath, $ce->{courseDirs}->{templates}, 1); # 1==path can be relative to dir 490 $problem->source_file($sourceFilePath); 491 } 492 493 # if the problem does not have a source file or no source file has been passed in 494 # then this is really an invalid problem (probably from a bad URL) 495 $self->{invalidProblem} = not (defined $sourceFilePath or $problem->source_file); 496 497 # if the caller is asking to override the problem seed, do so 498 my $problemSeed = $r->param("problemSeed"); 499 if (defined $problemSeed) { 500 $problem->problem_seed($problemSeed); 501 } 502 503 my $publishedClass = ($set->published) ? "Published" : "Unpublished"; 504 my $publishedText = ($set->published) ? "visible to students." : "hidden from students."; 505 $self->addmessage(CGI::p("This set is " . CGI::font({class=>$publishedClass}, $publishedText))); 506 507 # test for additional set validity if it's not already invalid 508 } else { 509 # A set is valid if it exists and if it is either published or the user is privileged. 510 $self->{invalidSet} = !(defined $set and ($set->published || $authz->hasPermissions($userName, "view_unpublished_sets"))); 511 $self->{invalidProblem} = !(defined $problem and ($set->published || $authz->hasPermissions($userName, "view_unpublished_sets"))); 512 513 $self->addbadmessage(CGI::p("This problem will not count towards your grade.")) if $problem and not $problem->value and not $self->{invalidProblem}; 514 } 515 516 $self->{userName} = $userName; 517 $self->{effectiveUserName} = $effectiveUserName; 518 $self->{user} = $user; 519 $self->{effectiveUser} = $effectiveUser; 520 $self->{set} = $set; 521 $self->{problem} = $problem; 522 $self->{editMode} = $editMode; 523 524 ##### form processing ##### 525 526 # set options from form fields (see comment at top of file for names) 527 my $displayMode = $r->param("displayMode") || $ce->{pg}->{options}->{displayMode}; 528 my $redisplay = $r->param("redisplay"); 529 my $submitAnswers = $r->param("submitAnswers"); 530 my $checkAnswers = $r->param("checkAnswers"); 531 my $previewAnswers = $r->param("previewAnswers"); 532 533 my $formFields = { WeBWorK::Form->new_from_paramable($r)->Vars }; 534 535 $self->{displayMode} = $displayMode; 536 $self->{redisplay} = $redisplay; 537 $self->{submitAnswers} = $submitAnswers; 538 $self->{checkAnswers} = $checkAnswers; 539 $self->{previewAnswers} = $previewAnswers; 540 $self->{formFields} = $formFields; 541 542 # get result and send to message 543 my $status_message = $r->param("status_message"); 544 $self->addmessage(CGI::p("$status_message")) if $status_message; 545 546 # now that we've set all the necessary variables quit out if the set or problem is invalid 547 return if $self->{invalidSet} || $self->{invalidProblem}; 548 549 ##### permissions ##### 550 551 # are we allowed to view this problem? 552 $self->{isOpen} = after($set->open_date) || $authz->hasPermissions($userName, "view_unopened_sets"); 553 return unless $self->{isOpen}; 554 555 # what does the user want to do? 556 #FIXME There is a problem with checkboxes -- if they are not checked they are invisible. Hence if the default mode in $ce is 1 557 # there is no way to override this. Probably this is ok for the last three options, but it was definitely not ok for showing 558 # saved answers which is normally on, but you want to be able to turn it off! This section should be moved to ContentGenerator 559 # so that you can set these options anywhere. We also need mechanisms for making them sticky. 560 # Note: ProblemSet and ProblemSets might set showOldAnswers to '', which 561 # needs to be treated as if it is not set. 562 my %want = ( 563 showOldAnswers => (defined($r->param("showOldAnswers")) and $r->param("showOldAnswers") ne '') ? $r->param("showOldAnswers") : $ce->{pg}->{options}->{showOldAnswers}, 564 showCorrectAnswers => $r->param("showCorrectAnswers") || $ce->{pg}->{options}->{showCorrectAnswers}, 565 showHints => $r->param("showHints") || $ce->{pg}->{options}->{showHints}, 566 showSolutions => $r->param("showSolutions") || $ce->{pg}->{options}->{showSolutions}, 567 recordAnswers => $submitAnswers, 568 checkAnswers => $checkAnswers, 569 getSubmitButton => 1, 570 ); 571 572 # are certain options enforced? 573 my %must = ( 574 showOldAnswers => 0, 575 showCorrectAnswers => 0, 576 showHints => 0, 577 showSolutions => 0, 578 recordAnswers => ! $authz->hasPermissions($userName, "avoid_recording_answers"), 579 checkAnswers => 0, 580 getSubmitButton => 0, 581 ); 582 583 # does the user have permission to use certain options? 584 my @args = ($user, $effectiveUser, $set, $problem); 585 my %can = ( 586 showOldAnswers => $self->can_showOldAnswers(@args), 587 showCorrectAnswers => $self->can_showCorrectAnswers(@args), 588 showHints => $self->can_showHints(@args), 589 showSolutions => $self->can_showSolutions(@args), 590 recordAnswers => $self->can_recordAnswers(@args, 0), 591 checkAnswers => $self->can_checkAnswers(@args, $submitAnswers), 592 getSubmitButton => $self->can_recordAnswers(@args, $submitAnswers), 593 ); 594 595 # final values for options 596 my %will; 597 foreach (keys %must) { 598 $will{$_} = $can{$_} && ($want{$_} || $must{$_}); 599 } 600 601 ##### sticky answers ##### 602 603 if (not ($submitAnswers or $previewAnswers or $checkAnswers) and $will{showOldAnswers}) { 604 # do this only if new answers are NOT being submitted 605 my %oldAnswers = decodeAnswers($problem->last_answer); 606 $formFields->{$_} = $oldAnswers{$_} foreach keys %oldAnswers; 607 } 608 609 ##### translation ##### 610 611 debug("begin pg processing"); 612 my $pg = WeBWorK::PG->new( 613 $ce, 614 $effectiveUser, 615 $key, 616 $set, 617 $problem, 618 $set->psvn, # FIXME: this field should be removed 619 $formFields, 620 { # translation options 621 displayMode => $displayMode, 622 showHints => $will{showHints}, 623 showSolutions => $will{showSolutions}, 624 refreshMath2img => $will{showHints} || $will{showSolutions}, 625 processAnswers => 1, 626 }, 627 ); 628 629 debug("end pg processing"); 630 631 ##### fix hint/solution options ##### 632 633 $can{showHints} &&= $pg->{flags}->{hintExists} 634 &&= $pg->{flags}->{showHintLimit}<=$pg->{state}->{num_of_incorrect_ans}; 635 $can{showSolutions} &&= $pg->{flags}->{solutionExists}; 636 637 ##### store fields ##### 638 639 $self->{want} = \%want; 640 $self->{must} = \%must; 641 $self->{can} = \%can; 642 $self->{will} = \%will; 643 $self->{pg} = $pg; 644 } 645 646 sub if_errors($$) { 647 my ($self, $arg) = @_; 648 649 if ($self->{isOpen}) { 650 return $self->{pg}->{flags}->{error_flag} ? $arg : !$arg; 651 } else { 652 return !$arg; 653 } 654 } 655 656 sub head { 657 my ($self) = @_; 658 659 return "" unless $self->{isOpen}; 660 return $self->{pg}->{head_text} if $self->{pg}->{head_text}; 661 } 662 663 sub options { 664 my ($self) = @_; 665 #warn "doing options in Problem"; 666 667 # don't show options if we don't have anything to show 668 return "" if $self->{invalidSet} or $self->{invalidProblem}; 669 return "" unless $self->{isOpen}; 670 671 my $displayMode = $self->{displayMode}; 672 my %can = %{ $self->{can} }; 673 674 my @options_to_show = "displayMode"; 675 push @options_to_show, "showOldAnswers" if $can{showOldAnswers}; 676 push @options_to_show, "showHints" if $can{showHints}; 677 push @options_to_show, "showSolutions" if $can{showSolutions}; 678 679 return $self->optionsMacro( 680 options_to_show => \@options_to_show, 681 extra_params => ["editMode", "sourceFilePath"], 682 ); 683 } 684 685 sub siblings { 686 my ($self) = @_; 687 my $r = $self->r; 688 my $db = $r->db; 689 my $urlpath = $r->urlpath; 690 691 # can't show sibling problems if the set is invalid 692 return "" if $self->{invalidSet}; 693 694 my $courseID = $urlpath->arg("courseID"); 695 my $setID = $self->{set}->set_id; 696 my $eUserID = $r->param("effectiveUser"); 697 my @problemIDs = sort { $a <=> $b } $db->listUserProblems($eUserID, $setID); 698 699 print CGI::start_div({class=>"info-box", id=>"fisheye"}); 700 print CGI::h2("Problems"); 701 #print CGI::start_ul({class=>"LinksMenu"}); 702 #print CGI::start_li(); 703 #print CGI::span({style=>"font-size:larger"}, "Problems"); 704 print CGI::start_ul(); 705 706 foreach my $problemID (@problemIDs) { 707 my $problemPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Problem", 708 courseID => $courseID, setID => $setID, problemID => $problemID); 709 print CGI::li(CGI::a( {href=>$self->systemLink($problemPage, 710 params=>{ displayMode => $self->{displayMode}, 711 showOldAnswers => $self->{will}->{showOldAnswers} 712 })}, "Problem $problemID") 713 ); 714 } 715 716 print CGI::end_ul(); 717 #print CGI::end_li(); 718 #print CGI::end_ul(); 719 print CGI::end_div(); 720 721 return ""; 722 } 723 724 sub nav { 725 my ($self, $args) = @_; 726 my $r = $self->r; 727 my $db = $r->db; 728 my $urlpath = $r->urlpath; 729 730 my $courseID = $urlpath->arg("courseID"); 731 my $setID = $self->{set}->set_id if !($self->{invalidSet}); 732 my $problemID = $self->{problem}->problem_id if !($self->{invalidProblem}); 733 my $eUserID = $r->param("effectiveUser"); 734 735 my ($prevID, $nextID); 736 737 if (!$self->{invalidProblem}) { 738 my @problemIDs = $db->listUserProblems($eUserID, $setID); 739 foreach my $id (@problemIDs) { 740 $prevID = $id if $id < $problemID 741 and (not defined $prevID or $id > $prevID); 742 $nextID = $id if $id > $problemID 743 and (not defined $nextID or $id < $nextID); 744 } 745 } 746 747 my @links; 748 749 if ($prevID) { 750 my $prevPage = $urlpath->newFromModule(__PACKAGE__, 751 courseID => $courseID, setID => $setID, problemID => $prevID); 752 push @links, "Previous Problem", $r->location . $prevPage->path, "navPrev"; 753 } else { 754 push @links, "Previous Problem", "", "navPrev"; 755 } 756 757 push @links, "Problem List", $r->location . $urlpath->parent->path, "navProbList"; 758 759 if ($nextID) { 760 my $nextPage = $urlpath->newFromModule(__PACKAGE__, 761 courseID => $courseID, setID => $setID, problemID => $nextID); 762 push @links, "Next Problem", $r->location . $nextPage->path, "navNext"; 763 } else { 764 push @links, "Next Problem", "", "navNext"; 765 } 766 767 my $tail = ""; 768 769 $tail .= "&displayMode=".$self->{displayMode} if defined $self->{displayMode}; 770 $tail .= "&showOldAnswers=".$self->{will}->{showOldAnswers} 771 if defined $self->{will}->{showOldAnswers}; 772 return $self->navMacro($args, $tail, @links); 773 } 774 775 sub title { 776 my ($self) = @_; 777 778 # using the url arguments won't break if the set/problem are invalid 779 my $setID = WeBWorK::ContentGenerator::underscore2nbsp($self->r->urlpath->arg("setID")); 780 my $problemID = $self->r->urlpath->arg("problemID"); 781 782 return "$setID: Problem $problemID"; 783 } 784 785 sub body { 786 my $self = shift; 787 my $r = $self->r; 788 my $ce = $r->ce; 789 my $db = $r->db; 790 my $authz = $r->authz; 791 my $urlpath = $r->urlpath; 792 my $user = $r->param('user'); 793 my $effectiveUser = $r->param('effectiveUser'); 794 795 if ($self->{invalidSet}) { 796 return CGI::div({class=>"ResultsWithError"}, 797 CGI::p("The selected homework set (" . $urlpath->arg("setID") . ") is not a valid set for " . $r->param("effectiveUser") . ".")); 798 } 799 800 if ($self->{invalidProblem}) { 801 return CGI::div({class=>"ResultsWithError"}, 802 CGI::p("The selected problem (" . $urlpath->arg("problemID") . ") is not a valid problem for set " . $self->{set}->set_id . ".")); 803 } 804 805 unless ($self->{isOpen}) { 806 return CGI::div({class=>"ResultsWithError"}, 807 CGI::p("This problem is not available because the homework set that contains it is not yet open.")); 808 } 809 # unpack some useful variables 810 my $set = $self->{set}; 811 my $problem = $self->{problem}; 812 my $editMode = $self->{editMode}; 813 my $submitAnswers = $self->{submitAnswers}; 814 my $checkAnswers = $self->{checkAnswers}; 815 my $previewAnswers = $self->{previewAnswers}; 816 my %want = %{ $self->{want} }; 817 my %can = %{ $self->{can} }; 818 my %must = %{ $self->{must} }; 819 my %will = %{ $self->{will} }; 820 my $pg = $self->{pg}; 821 822 my $courseName = $urlpath->arg("courseID"); 823 824 # FIXME: move editor link to top, next to problem number. 825 # format as "[edit]" like we're doing with course info file, etc. 826 # add edit link for set as well. 827 my $editorLink = ""; 828 # if we are here without a real homework set, carry that through 829 my $forced_field = []; 830 $forced_field = ['sourceFilePath' => $r->param("sourceFilePath")] if 831 ($set->set_id eq 'Undefined_Set'); 832 if ($authz->hasPermissions($user, "modify_problem_sets")) { 833 my $editorPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::PGProblemEditor", 834 courseID => $courseName, setID => $set->set_id, problemID => $problem->problem_id); 835 my $editorURL = $self->systemLink($editorPage, params=>$forced_field); 836 $editorLink = CGI::p(CGI::a({href=>$editorURL,target =>'WW_Editor'}, "Edit this problem")); 837 } 838 839 ##### translation errors? ##### 840 841 if ($pg->{flags}->{error_flag}) { 842 if ($authz->hasPermissions($user, "view_problem_debugging_info")) { 843 print $self->errorOutput($pg->{errors}, $pg->{body_text}); 844 } else { 845 print $self->errorOutput($pg->{errors}, "You do not have permission to view the details of this error."); 846 } 847 print $editorLink; 848 return ""; 849 } 850 851 ##### answer processing ##### 852 debug("begin answer processing"); 853 # if answers were submitted: 854 my $scoreRecordedMessage; 855 my $pureProblem; 856 if ($submitAnswers) { 857 # get a "pure" (unmerged) UserProblem to modify 858 # this will be undefined if the problem has not been assigned to this user 859 $pureProblem = $db->getUserProblem($problem->user_id, $problem->set_id, $problem->problem_id); # checked 860 if (defined $pureProblem) { 861 # store answers in DB for sticky answers 862 my %answersToStore; 863 my %answerHash = %{ $pg->{answers} }; 864 $answersToStore{$_} = $self->{formFields}->{$_} #$answerHash{$_}->{original_student_ans} -- this may have been modified for fields with multiple values. Don't use it!! 865 foreach (keys %answerHash); 866 867 # There may be some more answers to store -- one which are auxiliary entries to a primary answer. Evaluating 868 # matrices works in this way, only the first answer triggers an answer evaluator, the rest are just inputs 869 # however we need to store them. Fortunately they are still in the input form. 870 my @extra_answer_names = @{ $pg->{flags}->{KEPT_EXTRA_ANSWERS}}; 871 $answersToStore{$_} = $self->{formFields}->{$_} foreach (@extra_answer_names); 872 873 # Now let's encode these answers to store them -- append the extra answers to the end of answer entry order 874 my @answer_order = (@{$pg->{flags}->{ANSWER_ENTRY_ORDER}}, @extra_answer_names); 875 my $answerString = encodeAnswers(%answersToStore, 876 @answer_order); 877 878 # store last answer to database 879 $problem->last_answer($answerString); 880 $pureProblem->last_answer($answerString); 881 $db->putUserProblem($pureProblem); 882 883 # store state in DB if it makes sense 884 if ($will{recordAnswers}) { 885 $problem->status($pg->{state}->{recorded_score}); 886 $problem->attempted(1); 887 $problem->num_correct($pg->{state}->{num_of_correct_ans}); 888 $problem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 889 $pureProblem->status($pg->{state}->{recorded_score}); 890 $pureProblem->attempted(1); 891 $pureProblem->num_correct($pg->{state}->{num_of_correct_ans}); 892 $pureProblem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 893 if ($db->putUserProblem($pureProblem)) { 894 $scoreRecordedMessage = "Your score was recorded."; 895 } else { 896 $scoreRecordedMessage = "Your score was not recorded because there was a failure in storing the problem record to the database."; 897 } 898 # write to the transaction log, just to make sure 899 writeLog($self->{ce}, "transaction", 900 $problem->problem_id."\t". 901 $problem->set_id."\t". 902 $problem->user_id."\t". 903 $problem->source_file."\t". 904 $problem->value."\t". 905 $problem->max_attempts."\t". 906 $problem->problem_seed."\t". 907 $pureProblem->status."\t". 908 $pureProblem->attempted."\t". 909 $pureProblem->last_answer."\t". 910 $pureProblem->num_correct."\t". 911 $pureProblem->num_incorrect 912 ); 913 } else { 914 if (before($set->open_date) or after($set->due_date)) { 915 $scoreRecordedMessage = "Your score was not recorded because this homework set is closed."; 916 } else { 917 $scoreRecordedMessage = "Your score was not recorded."; 918 } 919 } 920 } else { 921 $scoreRecordedMessage = "Your score was not recorded because this problem has not been assigned to you."; 922 } 923 } 924 925 # logging student answers 926 927 my $answer_log = $self->{ce}->{courseFiles}->{logs}->{'answer_log'}; 928 if ( defined($answer_log ) and defined($pureProblem)) { 929 if ($submitAnswers && !$authz->hasPermissions($effectiveUser, "dont_log_past_answers")) { 930 my $answerString = ""; my $scores = ""; 931 my %answerHash = %{ $pg->{answers} }; 932 # FIXME this is the line 552 error. make sure original student ans is defined. 933 # The fact that it is not defined is probably due to an error in some answer evaluator. 934 # But I think it is useful to suppress this error message in the log. 935 foreach (sortByName(undef, keys %answerHash)) { 936 my $orig_ans = $answerHash{$_}->{original_student_ans}; 937 my $student_ans = defined $orig_ans ? $orig_ans : ''; 938 $answerString .= $student_ans."\t"; 939 $scores .= $answerHash{$_}->{score} >= 1 ? "1" : "0"; 940 } 941 $answerString = '' unless defined($answerString); # insure string is defined. 942 writeCourseLog($self->{ce}, "answer_log", 943 join("", 944 '|', $problem->user_id, 945 '|', $problem->set_id, 946 '|', $problem->problem_id, 947 '|', $scores, "\t", 948 time(),"\t", 949 $answerString, 950 ), 951 ); 952 953 } 954 } 955 956 debug("end answer processing"); 957 958 ##### output ##### 959 # custom message for editor 960 if ($authz->hasPermissions($user, "modify_problem_sets") and defined $editMode) { 961 if ($editMode eq "temporaryFile") { 962 print CGI::p(CGI::div({class=>'temporaryFile'}, "Viewing temporary file: ", $problem->source_file)); 963 } elsif ($editMode eq "savedFile") { 964 # taken care of in the initialization phase 965 } 966 } 967 print CGI::start_div({class=>"problemHeader"}); 968 969 970 971 # attempt summary 972 #FIXME -- the following is a kludge: if showPartialCorrectAnswers is negative don't show anything. 973 # until after the due date 974 # do I need to check $will{showCorrectAnswers} to make preflight work?? 975 if (($pg->{flags}->{showPartialCorrectAnswers} >= 0 and $submitAnswers) ) { 976 # print this if user submitted answers OR requested correct answers 977 978 print $self->attemptResults($pg, 1, 979 $will{showCorrectAnswers}, 980 $pg->{flags}->{showPartialCorrectAnswers}, 1, 1); 981 } elsif ($checkAnswers) { 982 # print this if user previewed answers 983 print CGI::div({class=>'ResultsWithError'},"ANSWERS ONLY CHECKED -- ANSWERS NOT RECORDED"), CGI::br(); 984 print $self->attemptResults($pg, 1, $will{showCorrectAnswers}, 1, 1, 1); 985 # show attempt answers 986 # show correct answers if asked 987 # show attempt results (correctness) 988 # show attempt previews 989 } elsif ($previewAnswers) { 990 # print this if user previewed answers 991 print CGI::div({class=>'ResultsWithError'},"PREVIEW ONLY -- ANSWERS NOT RECORDED"),CGI::br(),$self->attemptResults($pg, 1, 0, 0, 0, 1); 992 # show attempt answers 993 # don't show correct answers 994 # don't show attempt results (correctness) 995 # show attempt previews 996 } 997 998 print CGI::end_div(); 999 1000 # main form 1001 print "\n"; 1002 print CGI::start_form(-method=>"POST", -action=> $r->uri,-name=>"problemMainForm", onSubmit=>"submitAction()"); 1003 print $self->hidden_authen_fields; 1004 print "\n"; 1005 print CGI::start_div({class=>"problem"}); 1006 print CGI::p($pg->{body_text}); 1007 print CGI::p(CGI::b("Note: "). CGI::i($pg->{result}->{msg})) if $pg->{result}->{msg}; 1008 print $editorLink; # this is empty unless it is appropriate to have an editor link. 1009 print CGI::end_div(); 1010 1011 print CGI::start_p(); 1012 1013 if ($can{showCorrectAnswers}) { 1014 print CGI::checkbox( 1015 -name => "showCorrectAnswers", 1016 -checked => $will{showCorrectAnswers}, 1017 -label => "Show correct answers", 1018 ); 1019 } 1020 if ($can{showHints}) { 1021 print CGI::div({style=>"color:red"}, 1022 CGI::checkbox( 1023 -name => "showHints", 1024 -checked => $will{showHints}, 1025 -label => "Show Hints", 1026 ) 1027 ); 1028 } 1029 if ($can{showSolutions}) { 1030 print CGI::checkbox( 1031 -name => "showSolutions", 1032 -checked => $will{showSolutions}, 1033 -label => "Show Solutions", 1034 ); 1035 } 1036 1037 if ($can{showCorrectAnswers} or $can{showHints} or $can{showSolutions}) { 1038 print CGI::br(); 1039 } 1040 1041 print CGI::submit(-name=>"previewAnswers", -label=>"Preview Answers"); 1042 if ($can{checkAnswers}) { 1043 print CGI::submit(-name=>"checkAnswers", -label=>"Check Answers"); 1044 } 1045 if ($can{getSubmitButton}) { 1046 if ($user ne $effectiveUser) { 1047 # if acting as a student, make it clear that answer submissions will 1048 # apply to the student's records, not the professor's. 1049 print CGI::submit(-name=>"submitAnswers", -label=>"Submit Answers for $effectiveUser"); 1050 } else { 1051 print CGI::submit(-name=>"submitAnswers", -label=>"Submit Answers"); 1052 } 1053 } 1054 1055 print CGI::end_p(); 1056 1057 print CGI::start_div({class=>"scoreSummary"}); 1058 1059 # score summary 1060 my $attempts = $problem->num_correct + $problem->num_incorrect; 1061 my $attemptsNoun = $attempts != 1 ? "times" : "time"; 1062 my $problem_status = $problem->status || 0; 1063 my $lastScore = sprintf("%.0f%%", $problem_status * 100); # Round to whole number 1064 my ($attemptsLeft, $attemptsLeftNoun); 1065 if ($problem->max_attempts == -1) { 1066 # unlimited attempts 1067 $attemptsLeft = "unlimited"; 1068 $attemptsLeftNoun = "attempts"; 1069 } else { 1070 $attemptsLeft = $problem->max_attempts - $attempts; 1071 $attemptsLeftNoun = $attemptsLeft == 1 ? "attempt" : "attempts"; 1072 } 1073 1074 my $setClosed = 0; 1075 my $setClosedMessage; 1076 if (before($set->open_date) or after($set->due_date)) { 1077 $setClosed = 1; 1078 if (before($set->open_date)) { 1079 $setClosedMessage = "This homework set is not yet open."; 1080 } elsif (after($set->due_date)) { 1081 $setClosedMessage = "This homework set is closed."; 1082 } 1083 } 1084 #if (before($set->open_date) or after($set->due_date)) { 1085 # $setClosed = 1; 1086 # $setClosedMessage = "This homework set is closed."; 1087 # if ($authz->hasPermissions($user, "view_answers")) { 1088 # $setClosedMessage .= " However, since you are a privileged user, additional attempts will be recorded."; 1089 # } else { 1090 # $setClosedMessage .= " Additional attempts will not be recorded."; 1091 # } 1092 #} 1093 unless (defined( $pg->{state}->{state_summary_msg}) and $pg->{state}->{state_summary_msg}=~/\S/) { 1094 my $notCountedMessage = ($problem->value) ? "" : "(This problem will not count towards your grade.)"; 1095 print CGI::p(join("", 1096 $submitAnswers ? $scoreRecordedMessage . CGI::br() : "", 1097 "You have attempted this problem $attempts $attemptsNoun.", CGI::br(), 1098 $submitAnswers ?"You received a score of ".sprintf("%.0f%%", $pg->{result}->{score} * 100)." for this attempt.".CGI::br():'', 1099 $problem->attempted 1100 ? "Your overall recorded score is $lastScore. $notCountedMessage" . CGI::br() 1101 : "", 1102 $setClosed ? $setClosedMessage : "You have $attemptsLeft $attemptsLeftNoun remaining." 1103 )); 1104 }else { 1105 print CGI::p($pg->{state}->{state_summary_msg}); 1106 } 1107 print CGI::end_div(); 1108 1109 # save state for viewOptions 1110 print CGI::hidden( 1111 -name => "showOldAnswers", 1112 -value => $will{showOldAnswers} 1113 ), 1114 1115 CGI::hidden( 1116 -name => "displayMode", 1117 -value => $self->{displayMode} 1118 ); 1119 print( CGI::hidden( 1120 -name => 'editMode', 1121 -value => $self->{editMode}, 1122 ) 1123 ) if defined($self->{editMode}) and $self->{editMode} eq 'temporaryFile'; 1124 print( CGI::hidden( 1125 -name => 'sourceFilePath', 1126 -value => $self->{problem}->{source_file} 1127 )) if defined($self->{problem}->{source_file}); 1128 1129 print( CGI::hidden( 1130 -name => 'problemSeed', 1131 -value => $r->param("problemSeed") 1132 )) if defined($r->param("problemSeed")); 1133 1134 # end of main form 1135 print CGI::endform(); 1136 1137 print CGI::start_div({class=>"problemFooter"}); 1138 1139 ## arguments for answer inspection button 1140 #my $prof_url = $ce->{webworkURLs}->{oldProf}; 1141 #my $webworkURL = $ce->{webworkURLs}->{root}; 1142 #my $cgi_url = $prof_url; 1143 #$cgi_url=~ s|/[^/]*$||; # clip profLogin.pl 1144 #my $authen_args = $self->url_authen_args(); 1145 #my $showPastAnswersURL = "$webworkURL/$courseName/instructor/show_answers/"; 1146 1147 my $pastAnswersPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::ShowAnswers", 1148 courseID => $courseName); 1149 my $showPastAnswersURL = $self->systemLink($pastAnswersPage, authen => 0); # no authen info for form action 1150 1151 # print answer inspection button 1152 if ($authz->hasPermissions($user, "view_answers")) { 1153 print "\n", 1154 CGI::start_form(-method=>"POST",-action=>$showPastAnswersURL,-target=>"WW_Info"),"\n", 1155 $self->hidden_authen_fields,"\n", 1156 CGI::hidden(-name => 'courseID', -value=>$courseName), "\n", 1157 CGI::hidden(-name => 'problemID', -value=>$problem->problem_id), "\n", 1158 CGI::hidden(-name => 'setID', -value=>$problem->set_id), "\n", 1159 CGI::hidden(-name => 'studentUser', -value=>$problem->user_id), "\n", 1160 CGI::p( {-align=>"left"}, 1161 CGI::submit(-name => 'action', -value=>'Show Past Answers') 1162 ), "\n", 1163 CGI::endform(); 1164 } 1165 1166 ## feedback form url 1167 #my $feedbackPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Feedback", 1168 # courseID => $courseName); 1169 #my $feedbackURL = $self->systemLink($feedbackPage, authen => 0); # no authen info for form action 1170 # 1171 ##print feedback form 1172 #print 1173 # CGI::start_form(-method=>"POST", -action=>$feedbackURL),"\n", 1174 # $self->hidden_authen_fields,"\n", 1175 # CGI::hidden("module", __PACKAGE__),"\n", 1176 # CGI::hidden("set", $set->set_id),"\n", 1177 # CGI::hidden("problem", $problem->problem_id),"\n", 1178 # CGI::hidden("displayMode", $self->{displayMode}),"\n", 1179 # CGI::hidden("showOldAnswers", $will{showOldAnswers}),"\n", 1180 # CGI::hidden("showCorrectAnswers", $will{showCorrectAnswers}),"\n", 1181 # CGI::hidden("showHints", $will{showHints}),"\n", 1182 # CGI::hidden("showSolutions", $will{showSolutions}),"\n", 1183 # CGI::p({-align=>"left"}, 1184 # CGI::submit(-name=>"feedbackForm", -label=>"Email instructor") 1185 # ), 1186 # CGI::endform(),"\n"; 1187 1188 print $self->feedbackMacro( 1189 module => __PACKAGE__, 1190 set => $self->{set}->set_id, 1191 problem => $problem->problem_id, 1192 displayMode => $self->{displayMode}, 1193 showOldAnswers => $will{showOldAnswers}, 1194 showCorrectAnswers => $will{showCorrectAnswers}, 1195 showHints => $will{showHints}, 1196 showSolutions => $will{showSolutions}, 1197 ); 1198 1199 print CGI::end_div(); 1200 1201 # debugging stuff 1202 if (0) { 1203 print 1204 CGI::hr(), 1205 CGI::h2("debugging information"), 1206 CGI::h3("form fields"), 1207 ref2string($self->{formFields}), 1208 CGI::h3("user object"), 1209 ref2string($self->{user}), 1210 CGI::h3("set object"), 1211 ref2string($set), 1212 CGI::h3("problem object"), 1213 ref2string($problem), 1214 CGI::h3("PG object"), 1215 ref2string($pg, {'WeBWorK::PG::Translator' => 1}); 1216 } 1217 1218 return ""; 1219 } 1220 1221 1;
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