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misc warning elimination, added message to tell you if your score was recorded.
1 ################################################################################ 2 # WeBWorK mod_perl (c) 2000-2002 WeBWorK Project 3 # $Id$ 4 ################################################################################ 5 6 package WeBWorK::ContentGenerator::Problem; 7 use base qw(WeBWorK::ContentGenerator); 8 9 =head1 NAME 10 11 WeBWorK::ContentGenerator::Problem - Allow a student to interact with a problem. 12 13 =cut 14 my $timer0_ON=0; # times pg translation phase 15 use strict; 16 use warnings; 17 use CGI qw(); 18 use File::Path qw(rmtree); 19 use WeBWorK::Form; 20 use WeBWorK::PG; 21 use WeBWorK::PG::IO; 22 use WeBWorK::Utils qw(writeLog encodeAnswers decodeAnswers ref2string makeTempDirectory); 23 use WeBWorK::DB::Utils qw(global2user user2global findDefaults); 24 use WeBWorK::Timing; 25 26 ############################################################ 27 # 28 # user 29 # effectiveUser 30 # key 31 # 32 # displayMode 33 # showOldAnswers 34 # showCorrectAnswers 35 # showHints 36 # showSolutions 37 # 38 # AnSwEr# - answer blanks in problem 39 # 40 # redisplay - name of the "Redisplay Problem" button 41 # submitAnswers - name of "Submit Answers" button 42 # checkAnswers - name of the "Check Answers" button 43 # previewAnswers - name of the "Preview Answers" button 44 # 45 ############################################################ 46 47 sub pre_header_initialize { 48 my ($self, $setName, $problemNumber) = @_; 49 my $r = $self->{r}; 50 my $courseEnv = $self->{ce}; 51 my $db = $self->{db}; 52 my $userName = $r->param('user'); 53 my $effectiveUserName = $r->param('effectiveUser'); 54 my $key = $r->param('key'); 55 my $user = $db->getUser($userName); 56 my $effectiveUser = $db->getUser($effectiveUserName); 57 my $permissionLevel = $db->getPermissionLevel($userName)->permission(); 58 59 # obtain the merged set for $effectiveUser 60 my $set = $db->getMergedSet($effectiveUserName, $setName); 61 62 # obtain the merged problem for $effectiveUser 63 my $problem = $db->getMergedProblem($effectiveUserName, $setName, $problemNumber); 64 65 my $editMode = $r->param("editMode"); 66 67 if ($permissionLevel > 0 and defined $editMode) { 68 # professors are allowed to fabricate sets and problems not 69 # assigned to them (or anyone). this allows them to use the 70 # editor to 71 72 # if that is not yet defined obtain the global set, convert 73 # it to a user set, and add fake user data 74 unless (defined $set) { 75 my $userSetClass = $db->{set_user}->{record}; 76 $set = global2user($userSetClass, 77 $db->getGlobalSet($setName)); 78 die "Set $setName does not exist" 79 unless defined $set; 80 $set->psvn(0); 81 } 82 83 # if that is not yet defined obtain the global problem, 84 # convert it to a user problem, and add fake user data 85 unless (defined $problem) { 86 my $userProblemClass = $db->{problem_user}->{record}; 87 $problem = global2user($userProblemClass, 88 $db->getGlobalProblem($setName,$problemNumber)); 89 die "Problem $problemNumber in set $setName does not exist" 90 unless defined $problem; 91 $problem->user_id($effectiveUserName); 92 $problem->problem_seed(0); 93 $problem->status(0); 94 $problem->attempted(0); 95 $problem->last_answer(""); 96 $problem->num_correct(0); 97 $problem->num_incorrect(0); 98 } 99 100 # now we're sure we have valid UserSet and UserProblem objects 101 # yay! 102 103 # now deal with possible editor overrides: 104 105 # if the caller is asking to override the source file, and 106 # editMode calls for a temporary file, do so 107 my $sourceFilePath = $r->param("sourceFilePath"); 108 if (defined $sourceFilePath and $editMode eq "temporaryFile") { 109 $problem->source_file($sourceFilePath); 110 } 111 112 # if the caller is asking to override the problem seed, do so 113 my $problemSeed = $r->param("problemSeed"); 114 if (defined $problemSeed) { 115 $problem->problem_seed($problemSeed); 116 } 117 } else { 118 # students can't view problems not assigned to them 119 die "Set $setName is not assigned to $effectiveUserName" 120 unless defined $set; 121 die "Problem $problemNumber in set $setName is not assigned to $effectiveUserName" 122 unless defined $problem; 123 } 124 125 $self->{userName} = $userName; 126 $self->{effectiveUserName} = $effectiveUserName; 127 $self->{user} = $user; 128 $self->{effectiveUser} = $effectiveUser; 129 $self->{permissionLevel} = $permissionLevel; 130 $self->{set} = $set; 131 $self->{problem} = $problem; 132 $self->{editMode} = $editMode; 133 134 ##### form processing ##### 135 136 # set options from form fields (see comment at top of file for names) 137 my $displayMode = $r->param("displayMode") || $courseEnv->{pg}->{options}->{displayMode}; 138 my $redisplay = $r->param("redisplay"); 139 my $submitAnswers = $r->param("submitAnswers"); 140 my $checkAnswers = $r->param("checkAnswers"); 141 my $previewAnswers = $r->param("previewAnswers"); 142 143 # fields which may be defined when using Problem Editor 144 #my $override_seed = ($permissionLevel>=10) ? $r->param('problemSeed') : undef; 145 #my $override_problem_source = ($permissionLevel>=10) ? $r->param('sourceFilePath') : undef; 146 #my $editMode = undef; 147 #my $submit_button = $r->param('submit_button'); 148 #if ( defined($submit_button ) ) { 149 # $editMode = "temporaryFile" if $submit_button eq 'Refresh'; 150 # $editMode = 'savedFile' if $submit_button eq 'Save'; 151 #} 152 # 153 ##override using the source file data from the form field 154 #$problem->source_file($override_problem_source) if defined($override_problem_source); 155 #$problem->problem_seed($override_seed) if defined($override_seed); 156 # 157 ## store path to source file for title. 158 #$self->{problem_source_name} = $problem->source_file; 159 #$self->{edit_mode} = $editMode; 160 #$self->{current_problem_source} = (defined($override_problem_source) ) ? 161 162 # coerce form fields into CGI::Vars format 163 my $formFields = { WeBWorK::Form->new_from_paramable($r)->Vars }; 164 165 $self->{displayMode} = $displayMode; 166 $self->{redisplay} = $redisplay; 167 $self->{submitAnswers} = $submitAnswers; 168 $self->{checkAnswers} = $checkAnswers; 169 $self->{previewAnswers} = $previewAnswers; 170 $self->{formFields} = $formFields; 171 172 ##### permissions ##### 173 174 # are we allowed to view this problem? 175 $self->{isOpen} = time >= $set->open_date || $permissionLevel > 0; 176 return unless $self->{isOpen}; 177 178 # what does the user want to do? 179 my %want = ( 180 showOldAnswers => $r->param("showOldAnswers") || $courseEnv->{pg}->{options}->{showOldAnswers}, 181 showCorrectAnswers => $r->param("showCorrectAnswers") || $courseEnv->{pg}->{options}->{showCorrectAnswers}, 182 showHints => $r->param("showHints") || $courseEnv->{pg}->{options}->{showHints}, 183 showSolutions => $r->param("showSolutions") || $courseEnv->{pg}->{options}->{showSolutions}, 184 recordAnswers => $submitAnswers, 185 checkAnswers => $checkAnswers, 186 ); 187 188 # are certain options enforced? 189 my %must = ( 190 showOldAnswers => 0, 191 showCorrectAnswers => 0, 192 showHints => 0, 193 showSolutions => 0, 194 recordAnswers => mustRecordAnswers($permissionLevel), 195 checkAnswers => 0, 196 ); 197 198 # does the user have permission to use certain options? 199 my %can = ( 200 showOldAnswers => 1, 201 showCorrectAnswers => canShowCorrectAnswers($permissionLevel, $set->answer_date), 202 showHints => 1, 203 showSolutions => canShowSolutions($permissionLevel, $set->answer_date), 204 recordAnswers => canRecordAnswers($permissionLevel, $set->open_date, $set->due_date, 205 $problem->max_attempts, $problem->num_correct + $problem->num_incorrect + 1), 206 # attempts=num_correct+num_incorrect+1, as this happens before updating $problem 207 checkAnswers => canCheckAnswers($permissionLevel, $set->answer_date), 208 ); 209 210 # final values for options 211 my %will; 212 foreach (keys %must) { 213 $will{$_} = $can{$_} && ($want{$_} || $must{$_}); 214 } 215 216 ##### sticky answers ##### 217 218 if (not $submitAnswers and $will{showOldAnswers}) { 219 # do this only if new answers are NOT being submitted 220 my %oldAnswers = decodeAnswers($problem->last_answer); 221 $formFields->{$_} = $oldAnswers{$_} foreach keys %oldAnswers; 222 } 223 224 ##### translation ##### 225 226 $WeBWorK::timer0->continue("begin pg processing") if $timer0_ON; 227 my $pg = WeBWorK::PG->new( 228 $courseEnv, 229 $effectiveUser, 230 $key, 231 $set, 232 $problem, 233 $set->psvn, # FIXME: this field should be removed 234 $formFields, 235 { # translation options 236 displayMode => $displayMode, 237 showHints => $will{showHints}, 238 showSolutions => $will{showSolutions}, 239 refreshMath2img => $will{showHints} || $will{showSolutions}, 240 processAnswers => 1, 241 }, 242 ); 243 244 $WeBWorK::timer0->continue("end pg processing") if $timer0_ON; 245 ##### fix hint/solution options ##### 246 247 $can{showHints} &&= $pg->{flags}->{hintExists}; 248 $can{showSolutions} &&= $pg->{flags}->{solutionExists}; 249 250 ##### store fields ##### 251 252 $self->{want} = \%want; 253 $self->{must} = \%must; 254 $self->{can} = \%can; 255 $self->{will} = \%will; 256 257 $self->{pg} = $pg; 258 } 259 260 #sub if_warnings($$) { 261 # my ($self, $arg) = @_; 262 # return 0 unless $self->{isOpen}; 263 # return $self->{pg}->{warnings} ne ""; 264 #} 265 266 sub if_errors($$) { 267 my ($self, $arg) = @_; 268 return 0 unless $self->{isOpen}; 269 return $self->{pg}->{flags}->{error_flag}; 270 } 271 272 sub head { 273 my $self = shift; 274 return "" unless $self->{isOpen}; 275 return $self->{pg}->{head_text} if $self->{pg}->{head_text}; 276 } 277 278 sub options { 279 my $self = shift; 280 return join("", 281 CGI::start_form("POST", $self->{r}->uri), 282 $self->hidden_authen_fields, 283 CGI::hr(), 284 CGI::start_div({class=>"viewOptions"}), 285 $self->viewOptions(), 286 CGI::end_div(), 287 CGI::end_form() 288 ); 289 } 290 291 sub path { 292 my $self = shift; 293 my $args = $_[-1]; 294 my $setName = $self->{set}->set_id; 295 my $problemNumber = $self->{problem}->problem_id; 296 297 my $ce = $self->{ce}; 298 my $root = $ce->{webworkURLs}->{root}; 299 my $courseName = $ce->{courseName}; 300 return $self->pathMacro($args, 301 "Home" => "$root", 302 $courseName => "$root/$courseName", 303 $setName => "$root/$courseName/$setName", 304 "Problem $problemNumber" => "", 305 ); 306 } 307 308 sub siblings { 309 my $self = shift; 310 my $setName = $self->{set}->set_id; 311 my $problemNumber = $self->{problem}->problem_id; 312 313 my $ce = $self->{ce}; 314 my $db = $self->{db}; 315 my $root = $ce->{webworkURLs}->{root}; 316 my $courseName = $ce->{courseName}; 317 print CGI::strong("Problems"), CGI::br(); 318 319 my $effectiveUser = $self->{r}->param("effectiveUser"); 320 my @problemIDs = $db->listUserProblems($effectiveUser, $setName); 321 foreach my $problem (sort { $a <=> $b } @problemIDs) { 322 print CGI::a({-href=>"$root/$courseName/$setName/".$problem."/?" 323 . $self->url_authen_args . "&displayMode=" . $self->{displayMode}}, 324 "Problem ".$problem), CGI::br(); 325 } 326 327 return ""; 328 } 329 330 sub nav { 331 $WeBWorK::timer0->continue("begin nav subroutine") if $timer0_ON; 332 my $self = shift; 333 my $args = $_[-1]; 334 my $setName = $self->{set}->set_id; 335 my $problemNumber = $self->{problem}->problem_id; 336 337 my $ce = $self->{ce}; 338 my $db = $self->{db}; 339 my $root = $ce->{webworkURLs}->{root}; 340 my $courseName = $ce->{courseName}; 341 342 my $wwdb = $self->{wwdb}; 343 my $effectiveUser = $self->{r}->param("effectiveUser"); 344 my $tail = "&displayMode=".$self->{displayMode}; 345 346 my @links = ("Problem List" , "$root/$courseName/$setName", "navProbList"); 347 348 my @problemIDs = $db->listUserProblems($effectiveUser, $setName); 349 my ($prevID, $nextID); 350 foreach my $id (@problemIDs) { 351 $prevID = $id if $id < $problemNumber 352 and (not defined $prevID or $id > $prevID); 353 $nextID = $id if $id > $problemNumber 354 and (not defined $nextID or $id < $nextID); 355 } 356 unshift @links, "Previous Problem" , ($prevID 357 ? "$root/$courseName/$setName/".$prevID 358 : "") , "navPrev"; 359 push @links, "Next Problem" , ($nextID 360 ? "$root/$courseName/$setName/".$nextID 361 : "") , "navNext"; 362 363 my $result = $self->navMacro($args, $tail, @links); 364 $WeBWorK::timer0->continue("end nav subroutine") if $timer0_ON; 365 return $result; 366 } 367 368 sub title { 369 my $self = shift; 370 my $setName = $self->{set}->set_id; 371 my $problemNumber = $self->{problem}->problem_id; 372 373 return "$setName : Problem $problemNumber"; 374 } 375 376 sub body { 377 my $self = shift; 378 379 return CGI::p(CGI::font({-color=>"red"}, "This problem is not available because the problem set that contains it is not yet open.")) 380 unless $self->{isOpen}; 381 382 # unpack some useful variables 383 my $r = $self->{r}; 384 my $db = $self->{db}; 385 my $set = $self->{set}; 386 my $problem = $self->{problem}; 387 my $editMode = $self->{editMode}; 388 my $permissionLevel = $self->{permissionLevel}; 389 my $submitAnswers = $self->{submitAnswers}; 390 my $checkAnswers = $self->{checkAnswers}; 391 my $previewAnswers = $self->{previewAnswers}; 392 my %want = %{ $self->{want} }; 393 my %can = %{ $self->{can} }; 394 my %must = %{ $self->{must} }; 395 my %will = %{ $self->{will} }; 396 my $pg = $self->{pg}; 397 398 ##### translation errors? ##### 399 400 if ($pg->{flags}->{error_flag}) { 401 return $self->errorOutput($pg->{errors}, $pg->{body_text}); 402 } 403 404 ##### answer processing ##### 405 $WeBWorK::timer0->continue("begin answer processing") if $timer0_ON; 406 # if answers were submitted: 407 my $scoreRecordedMessage; 408 if ($submitAnswers) { 409 # get a "pure" (unmerged) UserProblem to modify 410 # this will be undefined if the problem has not been assigned to this user 411 my $pureProblem = $db->getUserProblem($problem->user_id, $problem->set_id, $problem->problem_id); 412 if (defined $pureProblem) { 413 # store answers in DB for sticky answers 414 my %answersToStore; 415 my %answerHash = %{ $pg->{answers} }; 416 $answersToStore{$_} = $answerHash{$_}->{original_student_ans} 417 foreach (keys %answerHash); 418 my $answerString = encodeAnswers(%answersToStore, 419 @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }); 420 421 # store last answer to database 422 $problem->last_answer($answerString); 423 $pureProblem->last_answer($answerString); 424 $db->putUserProblem($pureProblem); 425 426 # store state in DB if it makes sense 427 if ($will{recordAnswers}) { 428 $problem->status($pg->{state}->{recorded_score}); 429 $problem->attempted(1); 430 $problem->num_correct($pg->{state}->{num_of_correct_ans}); 431 $problem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 432 $pureProblem->status($pg->{state}->{recorded_score}); 433 $pureProblem->attempted(1); 434 $pureProblem->num_correct($pg->{state}->{num_of_correct_ans}); 435 $pureProblem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 436 if ($db->putUserProblem($pureProblem)) { 437 $scoreRecordedMessage = "Your score was recorded."; 438 } else { 439 $scoreRecordedMessage = "Your score was not recorded because there was a failure in storing the problem record to the database."; 440 } 441 # write to the transaction log, just to make sure 442 writeLog($self->{ce}, "transaction", 443 $problem->problem_id."\t". 444 $problem->set_id."\t". 445 $problem->user_id."\t". 446 $problem->source_file."\t". 447 $problem->value."\t". 448 $problem->max_attempts."\t". 449 $problem->problem_seed."\t". 450 $pureProblem->status."\t". 451 $pureProblem->attempted."\t". 452 $pureProblem->last_answer."\t". 453 $pureProblem->num_correct."\t". 454 $pureProblem->num_incorrect 455 ); 456 } else { 457 if (time < $set->open_date or time > $set->due_date) { 458 $scoreRecordedMessage = "Your score was not recorded because this problem set is closed."; 459 } else { 460 $scoreRecordedMessage = "Your score was not recorded."; 461 } 462 } 463 } else { 464 $scoreRecordedMessage = "Your score was not recorded because this problem has not been built for you."; 465 } 466 } 467 468 # logging student answers 469 my $pastAnswerLog = undef; 470 if (defined( $self->{ce}->{webworkFiles}->{logs}->{'pastAnswerList'} )) { 471 $pastAnswerLog = $self->{ce}->{webworkFiles}->{logs}->{'pastAnswerList'}; 472 if ($submitAnswers and defined $pastAnswerLog) { 473 my $answerString = ""; 474 my %answerHash = %{ $pg->{answers} }; 475 $answerString = $answerString . $answerHash{$_}->{original_student_ans}."\t" 476 foreach (sort keys %answerHash); 477 $answerString = '' unless defined($answerString); # insure string is defined. 478 writeLog($self->{ce}, "pastAnswerList", 479 '|'.$problem->user_id. 480 '|'.$problem->set_id. 481 '|'.$problem->problem_id.'|'."\t". 482 time()."\t". 483 $answerString, 484 ); 485 } 486 } 487 488 $WeBWorK::timer0->continue("end answer processing") if $timer0_ON; 489 490 ##### output ##### 491 492 print CGI::start_div({class=>"problemHeader"}); 493 494 # custom message for editor 495 if ($permissionLevel >= 10 and defined $editMode) { 496 if ($editMode eq "temporaryFile") { 497 print CGI::p(CGI::i("Editing temporary file: ", $problem->source_file)); 498 } elsif ($editMode eq "savedFile") { 499 print CGI::p(CGI::i("Problem saved to: ", $problem->source_file)); 500 } 501 } 502 503 # attempt summary 504 if ($submitAnswers or $will{showCorrectAnswers}) { 505 # print this if user submitted answers OR requested correct answers 506 print $self->attemptResults($pg, $submitAnswers, 507 $will{showCorrectAnswers}, 508 $pg->{flags}->{showPartialCorrectAnswers}, 1, 1); 509 } elsif ($checkAnswers) { 510 # print this if user previewed answers 511 print $self->attemptResults($pg, 1, 0, 1, 1, 1); 512 # show attempt answers 513 # don't show correct answers 514 # show attempt results (correctness) 515 # don't show attempt previews 516 } elsif ($previewAnswers) { 517 # print this if user previewed answers 518 print $self->attemptResults($pg, 1, 0, 0, 0, 1); 519 # show attempt answers 520 # don't show correct answers 521 # don't show attempt results (correctness) 522 # show attempt previews 523 } 524 525 print CGI::end_div(); 526 527 print CGI::start_div({class=>"problem"}); 528 529 # main form 530 print 531 CGI::startform("POST", $r->uri), 532 $self->hidden_authen_fields, 533 CGI::p($pg->{body_text}), 534 CGI::p($pg->{result}->{msg} ? CGI::b("Note: ") : "", CGI::i($pg->{result}->{msg})), 535 CGI::p( 536 ($can{recordAnswers} 537 ? CGI::submit(-name=>"submitAnswers", 538 -label=>"Submit Answers") 539 : ""), 540 ($can{checkAnswers} 541 ? CGI::submit(-name=>"checkAnswers", 542 -label=>"Check Answers") 543 : ""), 544 CGI::submit(-name=>"previewAnswers", 545 -label=>"Preview Answers"), 546 ); 547 print CGI::end_div(); 548 549 print CGI::start_div({class=>"scoreSummary"}); 550 551 # score summary 552 my $attempts = $problem->num_correct + $problem->num_incorrect; 553 my $attemptsNoun = $attempts != 1 ? "times" : "time"; 554 my $lastScore = sprintf("%.0f%%", $problem->status * 100); # Round to whole number 555 my ($attemptsLeft, $attemptsLeftNoun); 556 if ($problem->max_attempts == -1) { 557 # unlimited attempts 558 $attemptsLeft = "unlimited"; 559 $attemptsLeftNoun = "attempts"; 560 } else { 561 $attemptsLeft = $problem->max_attempts - $attempts; 562 $attemptsLeftNoun = $attemptsLeft == 1 ? "attempt" : "attempts"; 563 } 564 565 my $setClosed = 0; 566 my $setClosedMessage; 567 if (time < $set->open_date or time > $set->due_date) { 568 $setClosed = 1; 569 $setClosedMessage = "This problem set is closed."; 570 if ($permissionLevel > 0) { 571 $setClosedMessage .= " However, since you are a privileged user, additional attempts will be recorded."; 572 } else { 573 $setClosedMessage .= " Additional attempts will not be recorded."; 574 } 575 } 576 print CGI::p( 577 $submitAnswers ? $scoreRecordedMessage . CGI::br() : "", 578 "You have attempted this problem $attempts $attemptsNoun.", CGI::br(), 579 $problem->attempted 580 ? "Your recorded score is $lastScore." . CGI::br() 581 : "", 582 $setClosed ? $setClosedMessage : "You have $attemptsLeft $attemptsLeftNoun remaining." 583 ); 584 print CGI::end_div(); 585 586 # save state for viewOptions 587 print CGI::hidden( 588 -name => "showOldAnswers", 589 -value => $will{showOldAnswers} 590 ), 591 CGI::hidden( 592 -name => "showCorrectAnswers", 593 -value => $will{showCorrectAnswers} 594 ), 595 CGI::hidden( 596 -name => "showHints", 597 -value => $will{showHints}), 598 CGI::hidden( 599 -name => "showSolutions", 600 -value => $will{showSolutions}, 601 ), 602 CGI::hidden( 603 -name => "displayMode", 604 -value => $self->{displayMode} 605 ); 606 607 # end of main form 608 print CGI::endform(); 609 610 # stuff we need below (pull these out at the beginning?) 611 my $ce = $self->{ce}; 612 my $root = $ce->{webworkURLs}->{root}; 613 my $courseName = $ce->{courseName}; 614 615 print CGI::start_div({class=>"problemFooter"}); 616 617 # arguments for answer inspection button 618 my $prof_url = $ce->{webworkURLs}->{oldProf}; 619 my $cgi_url = $prof_url; 620 $cgi_url=~ s|/[^/]*$||; # clip profLogin.pl 621 my $authen_args = $self->url_authen_args(); 622 my $showPastAnswersURL = "$cgi_url/showPastAnswers.pl"; 623 624 # print answer inspection button 625 if ($self->{permissionLevel} > 0) { 626 print "\n", 627 CGI::start_form(-method=>"POST",-action=>$showPastAnswersURL,-target=>"information"),"\n", 628 $self->hidden_authen_fields,"\n", 629 CGI::hidden(-name => 'course', -value=>$courseName), "\n", 630 CGI::hidden(-name => 'probNum', -value=>$problem->problem_id), "\n", 631 CGI::hidden(-name => 'setNum', -value=>$problem->set_id), "\n", 632 CGI::hidden(-name => 'User', -value=>$problem->user_id), "\n", 633 CGI::p( {-align=>"left"}, 634 CGI::submit(-name => 'action', -value=>'Show Past Answers') 635 ), "\n", 636 CGI::endform(); 637 } 638 639 #print CGI::end_div(); 640 # 641 #print CGI::start_div(); 642 643 # arguments for feedback form 644 my $feedbackURL = "$root/$courseName/feedback/"; 645 646 #print feedback form 647 print 648 CGI::start_form(-method=>"POST", -action=>$feedbackURL),"\n", 649 $self->hidden_authen_fields,"\n", 650 CGI::hidden("module", __PACKAGE__),"\n", 651 CGI::hidden("set", $set->set_id),"\n", 652 CGI::hidden("problem", $problem->problem_id),"\n", 653 CGI::hidden("displayMode", $self->{displayMode}),"\n", 654 CGI::hidden("showOldAnswers", $will{showOldAnswers}),"\n", 655 CGI::hidden("showCorrectAnswers", $will{showCorrectAnswers}),"\n", 656 CGI::hidden("showHints", $will{showHints}),"\n", 657 CGI::hidden("showSolutions", $will{showSolutions}),"\n", 658 CGI::p({-align=>"left"}, 659 CGI::submit(-name=>"feedbackForm", -label=>"Contact instructor") 660 ), 661 CGI::endform(),"\n"; 662 663 # FIXME print editor link 664 # print editor link if the user is an instructor AND the file is not in temporary editing mode 665 if ($self->{permissionLevel}>=10 and ( (not defined($self->{edit_mode})) or $self->{edit_mode} eq 'savedFile') ) { 666 print CGI::a({-href=>$ce->{webworkURLs}->{root}."/$courseName/instructor/pgProblemEditor/".$set->set_id. 667 '/'.$problem->problem_id.'?'.$self->url_authen_args},'Edit this problem'); 668 } 669 670 print CGI::end_div(); 671 672 # warning output 673 #if ($pg->{warnings} ne "") { 674 # print CGI::hr(), $self->warningOutput($pg->{warnings}); 675 #} 676 677 # debugging stuff 678 if (0) { 679 print 680 CGI::hr(), 681 CGI::h2("debugging information"), 682 CGI::h3("form fields"), 683 ref2string($self->{formFields}), 684 CGI::h3("user object"), 685 ref2string($self->{user}), 686 CGI::h3("set object"), 687 ref2string($set), 688 CGI::h3("problem object"), 689 ref2string($problem), 690 CGI::h3("PG object"), 691 ref2string($pg, {'WeBWorK::PG::Translator' => 1}); 692 } 693 694 return ""; 695 } 696 697 ##### output utilities ##### 698 699 sub attemptResults($$$$$$) { 700 my $self = shift; 701 my $pg = shift; 702 my $showAttemptAnswers = shift; 703 my $showCorrectAnswers = shift; 704 my $showAttemptResults = $showAttemptAnswers && shift; 705 my $showSummary = shift; 706 my $showAttemptPreview = shift || 0; 707 my $problemResult = $pg->{result}; # the overall result of the problem 708 my @answerNames = @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }; 709 710 my $showMessages = $showAttemptAnswers && grep { $pg->{answers}->{$_}->{ans_message} } @answerNames; 711 712 my $header; 713 #$header .= CGI::th("Part"); 714 $header .= $showAttemptAnswers ? CGI::th("Entered") : ""; 715 $header .= $showAttemptPreview ? CGI::th("Answer Preview") : ""; 716 $header .= $showCorrectAnswers ? CGI::th("Correct") : ""; 717 $header .= $showAttemptResults ? CGI::th("Result") : ""; 718 $header .= $showMessages ? CGI::th("messages") : ""; 719 my @tableRows = ( $header ); 720 my $numCorrect; 721 foreach my $name (@answerNames) { 722 my $answerResult = $pg->{answers}->{$name}; 723 my $studentAnswer = $answerResult->{student_ans}; # original_student_ans 724 my $preview = ($showAttemptPreview 725 ? $self->previewAnswer($answerResult) 726 : ""); 727 my $correctAnswer = $answerResult->{correct_ans}; 728 my $answerScore = $answerResult->{score}; 729 my $answerMessage = $showMessages ? $answerResult->{ans_message} : ""; 730 731 $numCorrect += $answerScore > 0; 732 my $resultString = $answerScore ? "correct" : "incorrect"; 733 734 # get rid of the goofy prefix on the answer names (supposedly, the format 735 # of the answer names is changeable. this only fixes it for "AnSwEr" 736 $name =~ s/^AnSwEr//; 737 738 my $row; 739 #$row .= CGI::td($name); 740 $row .= $showAttemptAnswers ? CGI::td(nbsp($studentAnswer)) : ""; 741 $row .= $showAttemptPreview ? CGI::td(nbsp($preview)) : ""; 742 $row .= $showCorrectAnswers ? CGI::td(nbsp($correctAnswer)) : ""; 743 $row .= $showAttemptResults ? CGI::td(nbsp($resultString)) : ""; 744 $row .= $answerMessage ? CGI::td(nbsp($answerMessage)) : ""; 745 push @tableRows, $row; 746 } 747 748 my $numIncorrectNoun = scalar @answerNames == 1 ? "question" : "questions"; 749 my $scorePercent = sprintf("%.0f%%", $problemResult->{score} * 100); 750 my $summary = "On this attempt, you answered $numCorrect out of " 751 . scalar @answerNames . " $numIncorrectNoun correct, for a score of $scorePercent."; 752 return CGI::table({-class=>"attemptResults"}, CGI::Tr(\@tableRows)) . ($showSummary ? CGI::p($summary) : ""); 753 } 754 sub nbsp { 755 my $str = shift; 756 ($str) ? $str : ' '; # returns non-breaking space for empty strings 757 } 758 sub viewOptions($) { 759 my $self = shift; 760 my $displayMode = $self->{displayMode}; 761 my %must = %{ $self->{must} }; 762 my %can = %{ $self->{can} }; 763 my %will = %{ $self->{will} }; 764 765 my $optionLine; 766 $can{showOldAnswers} and $optionLine .= join "", 767 "Show: ".CGI::br(), 768 CGI::checkbox( 769 -name => "showOldAnswers", 770 -checked => $will{showOldAnswers}, 771 -label => "Saved answers", 772 ), " ".CGI::br(); 773 $can{showCorrectAnswers} and $optionLine .= join "", 774 CGI::checkbox( 775 -name => "showCorrectAnswers", 776 -checked => $will{showCorrectAnswers}, 777 -label => "Correct answers", 778 ), " ".CGI::br(); 779 $can{showHints} and $optionLine .= join "", 780 CGI::checkbox( 781 -name => "showHints", 782 -checked => $will{showHints}, 783 -label => "Hints", 784 ), " ".CGI::br(); 785 $can{showSolutions} and $optionLine .= join "", 786 CGI::checkbox( 787 -name => "showSolutions", 788 -checked => $will{showSolutions}, 789 -label => "Solutions", 790 ), " ".CGI::br(); 791 $optionLine and $optionLine .= join "", CGI::br(); 792 793 return CGI::div({-style=>"border: thin groove; padding: 1ex; margin: 2ex align: left"}, 794 "View equations as: ".CGI::br(), 795 CGI::radio_group( 796 -name => "displayMode", 797 -values => ['plainText', 'formattedText', 'images'], 798 -default => $displayMode, 799 -linebreak=>'true', 800 -labels => { 801 plainText => "plain", 802 formattedText => "formatted", 803 images => "images", 804 } 805 ), CGI::br(),CGI::hr(), 806 $optionLine, 807 CGI::submit(-name=>"redisplay", -label=>"Save Options"), 808 ); 809 } 810 811 sub previewAnswer($$) { 812 my ($self, $answerResult) = @_; 813 my $ce = $self->{ce}; 814 my $effectiveUser = $self->{effectiveUser}; 815 my $set = $self->{set}; 816 my $problem = $self->{problem}; 817 my $displayMode = $self->{displayMode}; 818 819 # note: right now, we have to do things completely differently when we are 820 # rendering math from INSIDE the translator and from OUTSIDE the translator. 821 # so we'll just deal with each case explicitly here. there's some code 822 # duplication that can be dealt with later by abstracting out tth/dvipng/etc. 823 824 my $tex = $answerResult->{preview_latex_string}; 825 826 return "" unless defined $tex and $tex ne ""; 827 828 if ($displayMode eq "plainText") { 829 return $tex; 830 } elsif ($displayMode eq "formattedText") { 831 my $tthCommand = $ce->{externalPrograms}->{tth} 832 . " -L -f5 -r 2> /dev/null <<END_OF_INPUT; echo > /dev/null\n" 833 . "\\(".$tex."\\)\n" 834 . "END_OF_INPUT\n"; 835 836 # call tth 837 my $result = `$tthCommand`; 838 if ($?) { 839 return "<b>[tth failed: $? $@]</b>"; 840 } 841 return $result; 842 } elsif ($displayMode eq "images") { 843 # how are we going to name this? 844 my $targetPathCommon = "/m2i/" 845 . $effectiveUser->user_id . "." 846 . $set->set_id . "." 847 . $problem->problem_id . "." 848 . $answerResult->{ans_name} . ".png"; 849 850 # figure out where to put things 851 my $wd = makeTempDirectory($ce->{courseDirs}->{html_temp}, "webwork-dvipng"); 852 my $latex = $ce->{externalPrograms}->{latex}; 853 my $dvipng = $ce->{externalPrograms}->{dvipng}; 854 my $targetPath = $ce->{courseDirs}->{html_temp} . $targetPathCommon; 855 # should use surePathToTmpFile, but we have to 856 # isolate it from the problem enivronment first 857 my $targetURL = $ce->{courseURLs}->{html_temp} . $targetPathCommon; 858 859 # call dvipng to generate a preview 860 dvipng($wd, $latex, $dvipng, $tex, $targetPath); 861 rmtree($wd, 0, 0); 862 if (-e $targetPath) { 863 return "<img src=\"$targetURL\" alt=\"$tex\" />"; 864 } else { 865 return "<b>[math2img failed]</b>"; 866 } 867 } 868 } 869 870 ##### logging subroutine #### 871 872 873 874 ##### permission queries ##### 875 876 # this stuff should be abstracted out into the permissions system 877 # however, the permission system only knows about things in the 878 # course environment and the username. hmmm... 879 880 # also, i should fix these so that they have a consistent calling 881 # format -- perhaps: 882 # canPERM($courseEnv, $user, $set, $problem, $permissionLevel) 883 884 sub canShowCorrectAnswers($$) { 885 my ($permissionLevel, $answerDate) = @_; 886 return $permissionLevel > 0 || time > $answerDate; 887 } 888 889 sub canShowSolutions($$) { 890 my ($permissionLevel, $answerDate) = @_; 891 return canShowCorrectAnswers($permissionLevel, $answerDate); 892 } 893 894 sub canRecordAnswers($$$$$) { 895 my ($permissionLevel, $openDate, $dueDate, $maxAttempts, $attempts) = @_; 896 my $permHigh = $permissionLevel > 0; 897 my $timeOK = time >= $openDate && time <= $dueDate; 898 my $attemptsOK = $maxAttempts == -1 || $attempts <= $maxAttempts; 899 my $recordAnswers = $permHigh || ($timeOK && $attemptsOK); 900 return $recordAnswers; 901 } 902 903 sub canCheckAnswers($$) { 904 my ($permissionLevel, $answerDate) = @_; 905 my $permHigh = $permissionLevel > 0; 906 my $timeOK = time >= $answerDate; 907 my $recordAnswers = $permHigh || $timeOK; 908 return $recordAnswers; 909 } 910 911 sub mustRecordAnswers($) { 912 my ($permissionLevel) = @_; 913 return $permissionLevel == 0; 914 } 915 916 1;
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