Parent Directory
| 
Revision Log
When viewing a problem which isn't really part of a set (e.g., out of SetMaker), make the display mode option buttons work.
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 1.138 2004/05/28 14:55:01 jj Exp $ 5 # 6 # This program is free software; you can redistribute it and/or modify it under 7 # the terms of either: (a) the GNU General Public License as published by the 8 # Free Software Foundation; either version 2, or (at your option) any later 9 # version, or (b) the "Artistic License" which comes with this package. 10 # 11 # This program is distributed in the hope that it will be useful, but WITHOUT 12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 13 # FOR A PARTICULAR PURPOSE. See either the GNU General Public License or the 14 # Artistic License for more details. 15 ################################################################################ 16 17 package WeBWorK::ContentGenerator::Problem; 18 use base qw(WeBWorK::ContentGenerator); 19 20 =head1 NAME 21 22 WeBWorK::ContentGenerator::Problem - Allow a student to interact with a problem. 23 24 =cut 25 26 use strict; 27 use warnings; 28 use CGI qw(); 29 use File::Path qw(rmtree); 30 use WeBWorK::Form; 31 use WeBWorK::PG; 32 use WeBWorK::PG::ImageGenerator; 33 use WeBWorK::PG::IO; 34 use WeBWorK::Utils qw(writeLog writeCourseLog encodeAnswers decodeAnswers ref2string makeTempDirectory); 35 use WeBWorK::DB::Utils qw(global2user user2global findDefaults); 36 use WeBWorK::Timing; 37 38 use WeBWorK::Utils::Tasks qw(fake_set fake_problem); 39 40 ############################################################ 41 # 42 # user 43 # effectiveUser 44 # key 45 # 46 # displayMode 47 # showOldAnswers 48 # showCorrectAnswers 49 # showHints 50 # showSolutions 51 # 52 # AnSwEr# - answer blanks in problem 53 # 54 # redisplay - name of the "Redisplay Problem" button 55 # submitAnswers - name of "Submit Answers" button 56 # checkAnswers - name of the "Check Answers" button 57 # previewAnswers - name of the "Preview Answers" button 58 # 59 # FIXME: this table is heinously out of date 60 # 61 ############################################################ 62 63 # FIXME: what is this? 64 sub templateName { 65 "problem"; 66 } 67 68 sub pre_header_initialize { 69 my ($self) = @_; 70 my $r = $self->r; 71 my $ce = $r->ce; 72 my $db = $r->db; 73 my $urlpath = $r->urlpath; 74 75 my $setName = $urlpath->arg("setID"); 76 my $problemNumber = $r->urlpath->arg("problemID"); 77 my $userName = $r->param('user'); 78 my $effectiveUserName = $r->param('effectiveUser'); 79 my $key = $r->param('key'); 80 81 my $user = $db->getUser($userName); # checked 82 die "record for user $userName (real user) does not exist." 83 unless defined $user; 84 85 my $effectiveUser = $db->getUser($effectiveUserName); # checked 86 die "record for user $effectiveUserName (effective user) does not exist." 87 unless defined $effectiveUser; 88 89 my $PermissionLevel = $db->getPermissionLevel($userName); # checked 90 die "permission level record for user $userName does not exist (but the user does? odd...)" 91 unless defined $PermissionLevel; 92 my $permissionLevel = $PermissionLevel->permission; 93 94 # obtain the merged set for $effectiveUser 95 my $set = $db->getMergedSet($effectiveUserName, $setName); # checked 96 97 # obtain the merged problem for $effectiveUser 98 my $problem = $db->getMergedProblem($effectiveUserName, $setName, $problemNumber); # checked 99 100 my $editMode = $r->param("editMode"); 101 102 if ($permissionLevel > 0) { 103 # professors are allowed to fabricate sets and problems not 104 # assigned to them (or anyone). this allows them to use the 105 # editor to 106 107 # if that is not yet defined obtain the global set, convert 108 # it to a user set, and add fake user data 109 unless (defined $set) { 110 my $userSetClass = $db->{set_user}->{record}; 111 my $globalSet = $db->getGlobalSet($setName); # checked 112 # if the global set doesn't exist either, bail! 113 if(not defined $globalSet) { 114 $set = fake_set($db); 115 } else { 116 $set = global2user($userSetClass, $globalSet); 117 $set->psvn(0); 118 119 # FIXME: This is a temporary fix to fill in the database 120 # We want the published field to contain either 1 or 0 so if it has not been set to 0, default to 1 121 # this will fill in all the empty fields but not change anything that has been specifically set to 1 or 0 122 $globalSet->published("1") unless $globalSet->published eq "0"; 123 $db->putGlobalSet($globalSet); 124 } 125 } 126 127 # if that is not yet defined obtain the global problem, 128 # convert it to a user problem, and add fake user data 129 unless (defined $problem) { 130 my $userProblemClass = $db->{problem_user}->{record}; 131 my $globalProblem = $db->getGlobalProblem($setName, $problemNumber); # checked 132 # if the global problem doesn't exist either, bail! 133 if(not defined $globalProblem) { 134 my $sourceFilePath = $r->param("sourceFilePath"); 135 die "Problem $problemNumber in set $setName does not exist" 136 unless defined $sourceFilePath; 137 $problem = fake_problem($db); 138 $problem->problem_id(1); 139 $problem->source_file($sourceFilePath); 140 $problem->user_id($effectiveUserName); 141 } else { 142 $problem = global2user($userProblemClass, $globalProblem); 143 $problem->user_id($effectiveUserName); 144 $problem->problem_seed(0); 145 $problem->status(0); 146 $problem->attempted(0); 147 $problem->last_answer(""); 148 $problem->num_correct(0); 149 $problem->num_incorrect(0); 150 } 151 } 152 153 # now we're sure we have valid UserSet and UserProblem objects 154 # yay! 155 156 # now deal with possible editor overrides: 157 158 # if the caller is asking to override the source file, and 159 # editMode calls for a temporary file, do so 160 my $sourceFilePath = $r->param("sourceFilePath"); 161 if (defined $sourceFilePath and 162 (not defined $editMode or $editMode eq "temporaryFile")) { 163 $problem->source_file($sourceFilePath); 164 } 165 166 # if the caller is asking to override the problem seed, do so 167 my $problemSeed = $r->param("problemSeed"); 168 if (defined $problemSeed) { 169 $problem->problem_seed($problemSeed); 170 } 171 172 my $published = ($set->published) ? "visable to students." : "hidden from students."; 173 $self->addmessage(CGI::p("This set is " . CGI::font({class=>$published}, $published))); 174 } else { 175 176 $self->addmessage(CGI::div({class=>"ResultsWithError"}, CGI::p("This problem will not count towards your grade."))) unless $problem->value;; 177 # students can't view problems not assigned to them 178 179 # A set is valid if it exists and if it is either published or the user is privileged. 180 $self->{invalidSet} = (grep /$setName/, $db->listUserSets($effectiveUserName)) == 0 || !($set->published || $permissionLevel->permission > 0); # this is redundant because of the above if 181 $self->{invalidProblem} = (grep /$problemNumber/, $db->listUserProblems($effectiveUserName, $setName)) == 0 || !($set->published || $permissionLevel->permission > 0);; 182 183 } 184 185 $self->{userName} = $userName; 186 $self->{effectiveUserName} = $effectiveUserName; 187 $self->{user} = $user; 188 $self->{effectiveUser} = $effectiveUser; 189 $self->{permissionLevel} = $permissionLevel; 190 $self->{set} = $set; 191 $self->{problem} = $problem; 192 $self->{editMode} = $editMode; 193 194 ##### form processing ##### 195 196 # set options from form fields (see comment at top of file for names) 197 my $displayMode = $r->param("displayMode") || $ce->{pg}->{options}->{displayMode}; 198 my $redisplay = $r->param("redisplay"); 199 my $submitAnswers = $r->param("submitAnswers"); 200 my $checkAnswers = $r->param("checkAnswers"); 201 my $previewAnswers = $r->param("previewAnswers"); 202 203 my $formFields = { WeBWorK::Form->new_from_paramable($r)->Vars }; 204 205 $self->{displayMode} = $displayMode; 206 $self->{redisplay} = $redisplay; 207 $self->{submitAnswers} = $submitAnswers; 208 $self->{checkAnswers} = $checkAnswers; 209 $self->{previewAnswers} = $previewAnswers; 210 $self->{formFields} = $formFields; 211 212 # get result and send to message 213 my $success = $r->param("sucess"); 214 my $failure = $r->param("failure"); 215 $self->addmessage(CGI::div({class=>"ResultsWithError"}, CGI::p($failure))) if $failure; 216 $self->addmessage(CGI::div({class=>"ResultsWithoutError"}, CGI::p($success))) if $success; 217 218 # now that we've set all the necessary variables quit out if the set or problem is invalid 219 return if $self->{invalidSet} || $self->{invalidProblem}; 220 221 ##### permissions ##### 222 223 # are we allowed to view this problem? 224 $self->{isOpen} = time >= $set->open_date || $permissionLevel > 0; 225 return unless $self->{isOpen}; 226 227 # what does the user want to do? 228 my %want = ( 229 showOldAnswers => $r->param("showOldAnswers") || $ce->{pg}->{options}->{showOldAnswers}, 230 showCorrectAnswers => $r->param("showCorrectAnswers") || $ce->{pg}->{options}->{showCorrectAnswers}, 231 showHints => $r->param("showHints") || $ce->{pg}->{options}->{showHints}, 232 showSolutions => $r->param("showSolutions") || $ce->{pg}->{options}->{showSolutions}, 233 recordAnswers => $submitAnswers, 234 checkAnswers => $checkAnswers, 235 ); 236 237 # are certain options enforced? 238 my %must = ( 239 showOldAnswers => 0, 240 showCorrectAnswers => 0, 241 showHints => 0, 242 showSolutions => 0, 243 recordAnswers => mustRecordAnswers($permissionLevel), 244 checkAnswers => 0, 245 ); 246 247 # does the user have permission to use certain options? 248 my %can = ( 249 showOldAnswers => 1, 250 showCorrectAnswers => canShowCorrectAnswers($permissionLevel, $set->answer_date), 251 showHints => 1, 252 showSolutions => canShowSolutions($permissionLevel, $set->answer_date), 253 recordAnswers => canRecordAnswers($permissionLevel, $set->open_date, $set->due_date, 254 $problem->max_attempts, $problem->num_correct + $problem->num_incorrect + 1), 255 # attempts=num_correct+num_incorrect+1, as this happens before updating $problem 256 checkAnswers => canCheckAnswers($permissionLevel, $set->answer_date), 257 ); 258 259 # more complicated logic for showing check answer button: 260 # checkAnswers button shows up after due date -- once a student can't record anymore 261 # checkAnswers button always shows up when an instructor or TA is acting 262 # as someone else (the $user and $effectiveUserName aren't the same). 263 $can{checkAnswers} = ( 264 # $can{recordAnswers} will be false if the due date has passed OR the 265 # student has used up all of her attempts 266 ($can{checkAnswers} and not $can{recordAnswers}) 267 or 268 ( 269 # FIXME: this is not the right way to check for this. 270 # also, canCheckAnswers() will show this button if the permission 271 # level is positive, which is always true when an instructor is 272 # acting as a student 273 defined($userName) 274 and 275 defined($effectiveUserName) 276 and 277 ($userName ne $effectiveUserName) 278 ) 279 ); 280 281 # more complicated logif for showing "submit answer" button: 282 # We hide the submit answer button if someone is acting as a student 283 # This prevents errors where you accidently submit the answer for a student 284 # Not sure whether this a feature or a bug 285 $can{recordAnswers} = ( 286 $can{recordAnswers} 287 and not 288 ( 289 # FIXME: this is not the right way to check for this. 290 defined($userName) 291 and 292 defined($effectiveUserName) 293 and 294 ($userName ne $effectiveUserName) 295 ) 296 ); 297 298 # final values for options 299 my %will; 300 foreach (keys %must) { 301 $will{$_} = $can{$_} && ($want{$_} || $must{$_}); 302 } 303 304 ##### sticky answers ##### 305 306 if (not ($submitAnswers or $previewAnswers or $checkAnswers) and $will{showOldAnswers}) { 307 # do this only if new answers are NOT being submitted 308 my %oldAnswers = decodeAnswers($problem->last_answer); 309 $formFields->{$_} = $oldAnswers{$_} foreach keys %oldAnswers; 310 } 311 312 ##### translation ##### 313 314 $WeBWorK::timer->continue("begin pg processing") if defined($WeBWorK::timer); 315 my $pg = WeBWorK::PG->new( 316 $ce, 317 $effectiveUser, 318 $key, 319 $set, 320 $problem, 321 $set->psvn, # FIXME: this field should be removed 322 $formFields, 323 { # translation options 324 displayMode => $displayMode, 325 showHints => $will{showHints}, 326 showSolutions => $will{showSolutions}, 327 refreshMath2img => $will{showHints} || $will{showSolutions}, 328 processAnswers => 1, 329 }, 330 ); 331 332 $WeBWorK::timer->continue("end pg processing") if defined($WeBWorK::timer); 333 ##### fix hint/solution options ##### 334 335 $can{showHints} &&= $pg->{flags}->{hintExists} 336 &&= $pg->{flags}->{showHintLimit}<=$pg->{state}->{num_of_incorrect_ans}; 337 $can{showSolutions} &&= $pg->{flags}->{solutionExists}; 338 339 ##### store fields ##### 340 341 $self->{want} = \%want; 342 $self->{must} = \%must; 343 $self->{can} = \%can; 344 $self->{will} = \%will; 345 $self->{pg} = $pg; 346 } 347 348 sub if_errors($$) { 349 my ($self, $arg) = @_; 350 351 if ($self->{isOpen}) { 352 return $self->{pg}->{flags}->{error_flag} ? $arg : !$arg; 353 } else { 354 return !$arg; 355 } 356 } 357 358 sub head { 359 my ($self) = @_; 360 361 return "" unless $self->{isOpen}; 362 return $self->{pg}->{head_text} if $self->{pg}->{head_text}; 363 } 364 365 sub options { 366 my ($self) = @_; 367 368 return "" if $self->{invalidProblem}; 369 my $sourceFilePathfield = ''; 370 if($self->r->param("sourceFilePath")) { 371 $sourceFilePathfield = CGI::hidden(-name => "sourceFilePath", 372 -value => $self->r->param("sourceFilePath")); 373 } 374 375 return join("", 376 CGI::start_form("POST", $self->{r}->uri), 377 $self->hidden_authen_fields, 378 $sourceFilePathfield, 379 CGI::hr(), 380 CGI::start_div({class=>"viewOptions"}), 381 $self->viewOptions(), 382 CGI::end_div(), 383 CGI::end_form() 384 ); 385 } 386 387 #sub path { 388 # my $self = shift; 389 # my $args = $_[-1]; 390 # my $setName = $self->{set}->set_id; 391 # my $problemNumber = $self->{problem}->problem_id; 392 # 393 # my $ce = $self->{ce}; 394 # my $root = $ce->{webworkURLs}->{root}; 395 # my $courseName = $ce->{courseName}; 396 # return $self->pathMacro($args, 397 # "Home" => "$root", 398 # $courseName => "$root/$courseName", 399 # $setName => "$root/$courseName/$setName", 400 # "Problem $problemNumber" => "", 401 # ); 402 #} 403 404 sub siblings { 405 my ($self) = @_; 406 my $r = $self->r; 407 my $db = $r->db; 408 my $urlpath = $r->urlpath; 409 410 # can't show sibling problems if the set is invalid 411 return "" if $self->{invalidSet}; 412 413 my $courseID = $urlpath->arg("courseID"); 414 my $setID = $self->{set}->set_id; 415 my $eUserID = $r->param("effectiveUser"); 416 my @problemIDs = sort { $a <=> $b } $db->listUserProblems($eUserID, $setID); 417 418 print CGI::start_ul({class=>"LinksMenu"}); 419 print CGI::start_li(); 420 print CGI::span({style=>"font-size:larger"}, "Problems"); 421 print CGI::start_ul(); 422 423 foreach my $problemID (@problemIDs) { 424 my $problemPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Problem", 425 courseID => $courseID, setID => $setID, problemID => $problemID); 426 print CGI::li(CGI::a({href=>$self->systemLink($problemPage, params=>{displayMode => $self->{displayMode}})}, "Problem $problemID")); 427 } 428 429 print CGI::end_ul(); 430 print CGI::end_li(); 431 print CGI::end_ul(); 432 433 return ""; 434 } 435 436 sub nav { 437 my ($self, $args) = @_; 438 my $r = $self->r; 439 my $db = $r->db; 440 my $urlpath = $r->urlpath; 441 442 my $courseID = $urlpath->arg("courseID"); 443 my $setID = $self->{set}->set_id if !($self->{invalidSet}); 444 my $problemID = $self->{problem}->problem_id if !($self->{invalidProblem}); 445 my $eUserID = $r->param("effectiveUser"); 446 447 my ($prevID, $nextID); 448 449 if (!$self->{invalidProblem}) { 450 my @problemIDs = $db->listUserProblems($eUserID, $setID); 451 foreach my $id (@problemIDs) { 452 $prevID = $id if $id < $problemID 453 and (not defined $prevID or $id > $prevID); 454 $nextID = $id if $id > $problemID 455 and (not defined $nextID or $id < $nextID); 456 } 457 } 458 459 my @links; 460 461 if ($prevID) { 462 my $prevPage = $urlpath->newFromModule(__PACKAGE__, 463 courseID => $courseID, setID => $setID, problemID => $prevID); 464 push @links, "Previous Problem", $r->location . $prevPage->path, "navPrev"; 465 } else { 466 push @links, "Previous Problem", "", "navPrev"; 467 } 468 469 push @links, "Problem List", $r->location . $urlpath->parent->path, "navProbList"; 470 471 if ($nextID) { 472 my $nextPage = $urlpath->newFromModule(__PACKAGE__, 473 courseID => $courseID, setID => $setID, problemID => $nextID); 474 push @links, "Next Problem", $r->location . $nextPage->path, "navNext"; 475 } else { 476 push @links, "Next Problem", "", "navNext"; 477 } 478 479 my $tail = "&displayMode=".$self->{displayMode}; 480 return $self->navMacro($args, $tail, @links); 481 } 482 483 sub title { 484 my ($self) = @_; 485 486 # using the url arguments won't break if the set/problem are invalid 487 my $setID = $self->r->urlpath->arg("setID"); 488 my $problemID = $self->r->urlpath->arg("problemID"); 489 490 #my $setID = $self->{set}->set_id; 491 #my $problemID = $self->{problem}->problem_id; 492 493 return "$setID : $problemID"; 494 } 495 496 sub body { 497 my $self = shift; 498 my $r = $self->r; 499 my $ce = $r->ce; 500 my $db = $r->db; 501 my $urlpath = $r->urlpath; 502 503 if ($self->{invalidSet}) { 504 return CGI::div({class=>"ResultsWithError"}, 505 CGI::p("The selected problem set (" . $urlpath->arg("setID") . ") is not a valid set for " . $r->param("effectiveUser") . ".")); 506 } 507 508 if ($self->{invalidProblem}) { 509 return CGI::div({class=>"ResultsWithError"}, 510 CGI::p("The selected problem (" . $urlpath->arg("problemID") . ") is not a valid problem for set " . $self->{set}->set_id . ".")); 511 } 512 513 unless ($self->{isOpen}) { 514 return CGI::div({class=>"ResultsWithError"}, 515 CGI::p("This problem is not available because the problem set that contains it is not yet open.")); 516 } 517 # unpack some useful variables 518 my $set = $self->{set}; 519 my $problem = $self->{problem}; 520 my $editMode = $self->{editMode}; 521 my $permissionLevel = $self->{permissionLevel}; 522 my $submitAnswers = $self->{submitAnswers}; 523 my $checkAnswers = $self->{checkAnswers}; 524 my $previewAnswers = $self->{previewAnswers}; 525 my %want = %{ $self->{want} }; 526 my %can = %{ $self->{can} }; 527 my %must = %{ $self->{must} }; 528 my %will = %{ $self->{will} }; 529 my $pg = $self->{pg}; 530 531 #my $root = $ce->{webworkURLs}->{root}; 532 my $courseName = $urlpath->arg("courseID"); 533 534 #####create Editor link ##### 535 ## print editor link if the user is an instructor AND the file is not in temporary editing mode 536 #my $editorLinkMessage = ''; 537 ## and ( (not defined($self->{editMode})) or $self->{editMode} eq 'savedFile') # FIXME is this needed? 538 #if ($self->{permissionLevel}>=10 ) { 539 # $editorLinkMessage = CGI::a({-href=>$ce->{webworkURLs}->{root}."/$courseName/instructor/pgProblemEditor/". 540 # $set->set_id.'/'.$problem->problem_id.'?'.$self->url_authen_args},'Edit this problem'); 541 #} 542 543 my $editorLink = ""; 544 # if we are here without a real problem set, carry that through 545 my $forced_field = []; 546 $forced_field = ['sourceFilePath' => $r->param("sourceFilePath")] if 547 ($set->set_id eq 'Undefined_Set'); 548 if ($self->{permissionLevel}>=10) { 549 my $editorPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::PGProblemEditor", 550 courseID => $courseName, setID => $set->set_id, problemID => $problem->problem_id); 551 my $editorURL = $self->systemLink($editorPage, params=>$forced_field); 552 $editorLink = CGI::a({href=>$editorURL}, "Edit this problem"); 553 } 554 555 ##### translation errors? ##### 556 557 if ($pg->{flags}->{error_flag}) { 558 print $self->errorOutput($pg->{errors}, $pg->{body_text}); 559 print $editorLink; 560 return ""; 561 } 562 563 ##### answer processing ##### 564 $WeBWorK::timer->continue("begin answer processing") if defined($WeBWorK::timer); 565 # if answers were submitted: 566 my $scoreRecordedMessage; 567 my $pureProblem; 568 if ($submitAnswers) { 569 # get a "pure" (unmerged) UserProblem to modify 570 # this will be undefined if the problem has not been assigned to this user 571 $pureProblem = $db->getUserProblem($problem->user_id, $problem->set_id, $problem->problem_id); # checked 572 if (defined $pureProblem) { 573 # store answers in DB for sticky answers 574 my %answersToStore; 575 my %answerHash = %{ $pg->{answers} }; 576 $answersToStore{$_} = $self->{formFields}->{$_} #$answerHash{$_}->{original_student_ans} -- this may have been modified for fields with multiple values. Don't use it!! 577 foreach (keys %answerHash); 578 579 # There may be some more answers to store -- one which are auxiliary entries to a primary answer. Evaluating 580 # matrices works in this way, only the first answer triggers an answer evaluator, the rest are just inputs 581 # however we need to store them. Fortunately they are still in the input form. 582 my @extra_answer_names = @{ $pg->{flags}->{KEPT_EXTRA_ANSWERS}}; 583 $answersToStore{$_} = $self->{formFields}->{$_} foreach (@extra_answer_names); 584 585 # Now let's encode these answers to store them -- append the extra answers to the end of answer entry order 586 my @answer_order = (@{$pg->{flags}->{ANSWER_ENTRY_ORDER}}, @extra_answer_names); 587 my $answerString = encodeAnswers(%answersToStore, 588 @answer_order); 589 590 # store last answer to database 591 $problem->last_answer($answerString); 592 $pureProblem->last_answer($answerString); 593 $db->putUserProblem($pureProblem); 594 595 # store state in DB if it makes sense 596 if ($will{recordAnswers}) { 597 $problem->status($pg->{state}->{recorded_score}); 598 $problem->attempted(1); 599 $problem->num_correct($pg->{state}->{num_of_correct_ans}); 600 $problem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 601 $pureProblem->status($pg->{state}->{recorded_score}); 602 $pureProblem->attempted(1); 603 $pureProblem->num_correct($pg->{state}->{num_of_correct_ans}); 604 $pureProblem->num_incorrect($pg->{state}->{num_of_incorrect_ans}); 605 if ($db->putUserProblem($pureProblem)) { 606 $scoreRecordedMessage = "Your score was recorded."; 607 } else { 608 $scoreRecordedMessage = "Your score was not recorded because there was a failure in storing the problem record to the database."; 609 } 610 # write to the transaction log, just to make sure 611 writeLog($self->{ce}, "transaction", 612 $problem->problem_id."\t". 613 $problem->set_id."\t". 614 $problem->user_id."\t". 615 $problem->source_file."\t". 616 $problem->value."\t". 617 $problem->max_attempts."\t". 618 $problem->problem_seed."\t". 619 $pureProblem->status."\t". 620 $pureProblem->attempted."\t". 621 $pureProblem->last_answer."\t". 622 $pureProblem->num_correct."\t". 623 $pureProblem->num_incorrect 624 ); 625 } else { 626 if (time < $set->open_date or time > $set->due_date) { 627 $scoreRecordedMessage = "Your score was not recorded because this problem set is closed."; 628 } else { 629 $scoreRecordedMessage = "Your score was not recorded."; 630 } 631 } 632 } else { 633 $scoreRecordedMessage = "Your score was not recorded because this problem has not been built for you."; 634 } 635 } 636 637 # logging student answers 638 639 my $answer_log = $self->{ce}->{courseFiles}->{logs}->{'answer_log'}; 640 if ( defined($answer_log ) and defined($pureProblem)) { 641 if ($submitAnswers ) { 642 my $answerString = ""; 643 my %answerHash = %{ $pg->{answers} }; 644 # FIXME this is the line 552 error. make sure original student ans is defined. 645 # The fact that it is not defined is probably due to an error in some answer evaluator. 646 # But I think it is useful to suppress this error message in the log. 647 foreach (sort keys %answerHash) { 648 my $student_ans = $answerHash{$_}->{original_student_ans} ||''; 649 $answerString .= $student_ans."\t" 650 } 651 $answerString = '' unless defined($answerString); # insure string is defined. 652 writeCourseLog($self->{ce}, "answer_log", 653 join("", 654 '|', $problem->user_id, 655 '|', $problem->set_id, 656 '|', $problem->problem_id, 657 '|',"\t", 658 time(),"\t", 659 $answerString, 660 ), 661 ); 662 663 } 664 } 665 666 $WeBWorK::timer->continue("end answer processing") if defined($WeBWorK::timer); 667 668 ##### output ##### 669 670 print CGI::start_div({class=>"problemHeader"}); 671 672 # custom message for editor 673 if ($permissionLevel >= 10 and defined $editMode) { 674 if ($editMode eq "temporaryFile") { 675 print CGI::p(CGI::i("Editing temporary file: ", $problem->source_file)); 676 } elsif ($editMode eq "savedFile") { 677 # FIXME: this is all done automatically if submitError exists. 678 #if ( defined($r->param('submiterror')) and $r->param('submiterror') ) { 679 # FIXME The following line doesn't work because the submiterror hook has already been called. 680 # The actions below should take place during the initialization phase. 681 # $self->{submiterror} .= $r->param('submiterror'); 682 # print CGI::p(CGI::div({class=>'ResultsWithError'},$self->{submiterror})); 683 #} else { 684 # print CGI::p(CGI::div({ class=>'ResultsWithoutError'}, "Problem saved to: ", $problem->source_file)); 685 #} 686 } 687 } 688 #FIXME we need error messages here if the problem was really not saved. 689 # attempt summary 690 #FIXME -- the following is a kludge: if showPartialCorrectAnswers is negative don't show anything. 691 # until after the due date 692 # do I need to check $wills{howCorrectAnswers} to make preflight work?? 693 if (($pg->{flags}->{showPartialCorrectAnswers}>= 0 and $submitAnswers) ) { 694 # print this if user submitted answers OR requested correct answers 695 696 print $self->attemptResults($pg, 1, 697 $will{showCorrectAnswers}, 698 $pg->{flags}->{showPartialCorrectAnswers}, 1, 1); 699 } elsif ($checkAnswers) { 700 # print this if user previewed answers 701 print CGI::div({class=>'ResultsWithError'},"ANSWERS ONLY CHECKED -- ",CGI::br(),"ANSWERS NOT RECORDED", CGI::br() ); 702 print $self->attemptResults($pg, 1, $will{showCorrectAnswers}, 1, 1, 1); 703 # show attempt answers 704 # show correct answers if asked 705 # show attempt results (correctness) 706 # show attempt previews 707 } elsif ($previewAnswers) { 708 # print this if user previewed answers 709 print CGI::div({class=>'ResultsWithError'},"PREVIEW ONLY -- NOT RECORDED"),CGI::br(),$self->attemptResults($pg, 1, 0, 0, 0, 1); 710 # show attempt answers 711 # don't show correct answers 712 # don't show attempt results (correctness) 713 # show attempt previews 714 } 715 716 print CGI::end_div(); 717 718 print CGI::start_div({class=>"problem"}); 719 720 # main form 721 print 722 CGI::startform("POST", $r->uri), 723 $self->hidden_authen_fields, 724 CGI::p($pg->{body_text}), 725 CGI::p($pg->{result}->{msg} ? CGI::b("Note: ") : "", CGI::i($pg->{result}->{msg})), 726 CGI::p( 727 ($can{showCorrectAnswers} 728 ? CGI::checkbox( 729 -name => "showCorrectAnswers", 730 -checked => $will{showCorrectAnswers}, 731 -label => "Show correct answers", 732 ) ." " 733 : "" ), 734 ($can{showHints} 735 ? '<div style="color:red">'. CGI::checkbox( 736 -name => "showHints", 737 -checked => $will{showHints}, 738 -label => "Show Hints", 739 ) . "</div> " 740 : " " ), 741 ($can{showSolutions} 742 ? CGI::checkbox( 743 -name => "showSolutions", 744 -checked => $will{showSolutions}, 745 -label => "Show Solutions", 746 ) . " " 747 : " " ),CGI::br(), 748 CGI::submit(-name=>"previewAnswers", 749 -label=>"Preview Answers"), 750 ($can{recordAnswers} 751 ? CGI::submit(-name=>"submitAnswers", 752 -label=>"Submit Answers") 753 : ""), 754 ( $can{checkAnswers} 755 ? CGI::submit(-name=>"checkAnswers", 756 -label=>"Check Answers") 757 : ""), 758 ); 759 print CGI::end_div(); 760 761 print CGI::start_div({class=>"scoreSummary"}); 762 763 # score summary 764 my $attempts = $problem->num_correct + $problem->num_incorrect; 765 my $attemptsNoun = $attempts != 1 ? "times" : "time"; 766 my $lastScore = sprintf("%.0f%%", $problem->status * 100); # Round to whole number 767 my ($attemptsLeft, $attemptsLeftNoun); 768 if ($problem->max_attempts == -1) { 769 # unlimited attempts 770 $attemptsLeft = "unlimited"; 771 $attemptsLeftNoun = "attempts"; 772 } else { 773 $attemptsLeft = $problem->max_attempts - $attempts; 774 $attemptsLeftNoun = $attemptsLeft == 1 ? "attempt" : "attempts"; 775 } 776 777 my $setClosed = 0; 778 my $setClosedMessage; 779 if (time < $set->open_date or time > $set->due_date) { 780 $setClosed = 1; 781 $setClosedMessage = "This problem set is closed."; 782 if ($permissionLevel > 0) { 783 $setClosedMessage .= " However, since you are a privileged user, additional attempts will be recorded."; 784 } else { 785 $setClosedMessage .= " Additional attempts will not be recorded."; 786 } 787 } 788 789 my $notCountedMessage = ($problem->value) ? "" : "(This problem will not count towards your grade.)"; 790 print CGI::p( 791 $submitAnswers ? $scoreRecordedMessage . CGI::br() : "", 792 "You have attempted this problem $attempts $attemptsNoun.", CGI::br(), 793 $problem->attempted 794 ? "Your recorded score is $lastScore. $notCountedMessage" . CGI::br() 795 : "", 796 $setClosed ? $setClosedMessage : "You have $attemptsLeft $attemptsLeftNoun remaining." 797 ); 798 print CGI::end_div(); 799 800 # save state for viewOptions 801 print CGI::hidden( 802 -name => "showOldAnswers", 803 -value => $will{showOldAnswers} 804 ), 805 806 CGI::hidden( 807 -name => "displayMode", 808 -value => $self->{displayMode} 809 ); 810 print( CGI::hidden( 811 -name => 'editMode', 812 -value => $self->{editMode}, 813 ) 814 ) if defined($self->{editMode}) and $self->{editMode} eq 'temporaryFile'; 815 print( CGI::hidden( 816 -name => 'sourceFilePath', 817 -value => $self->{problem}->{source_file} 818 )) if defined($self->{problem}->{source_file}); 819 820 # end of main form 821 print CGI::endform(); 822 823 print CGI::start_div({class=>"problemFooter"}); 824 825 ## arguments for answer inspection button 826 #my $prof_url = $ce->{webworkURLs}->{oldProf}; 827 #my $webworkURL = $ce->{webworkURLs}->{root}; 828 #my $cgi_url = $prof_url; 829 #$cgi_url=~ s|/[^/]*$||; # clip profLogin.pl 830 #my $authen_args = $self->url_authen_args(); 831 #my $showPastAnswersURL = "$webworkURL/$courseName/instructor/show_answers/"; 832 833 my $pastAnswersPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Instructor::ShowAnswers", 834 courseID => $courseName); 835 my $showPastAnswersURL = $self->systemLink($pastAnswersPage, authen => 0); # no authen info for form action 836 837 # print answer inspection button 838 if ($self->{permissionLevel} > 0) { 839 print "\n", 840 CGI::start_form(-method=>"POST",-action=>$showPastAnswersURL,-target=>"information"),"\n", 841 $self->hidden_authen_fields,"\n", 842 CGI::hidden(-name => 'courseID', -value=>$courseName), "\n", 843 CGI::hidden(-name => 'problemID', -value=>$problem->problem_id), "\n", 844 CGI::hidden(-name => 'setID', -value=>$problem->set_id), "\n", 845 CGI::hidden(-name => 'studentUser', -value=>$problem->user_id), "\n", 846 CGI::p( {-align=>"left"}, 847 CGI::submit(-name => 'action', -value=>'Show Past Answers') 848 ), "\n", 849 CGI::endform(); 850 } 851 852 ## arguments for feedback form 853 #my $feedbackURL = "$root/$courseName/feedback/"; 854 # 855 ##print feedback form 856 #print 857 # CGI::start_form(-method=>"POST", -action=>$feedbackURL),"\n", 858 # $self->hidden_authen_fields,"\n", 859 # CGI::hidden("module", __PACKAGE__),"\n", 860 # CGI::hidden("set", $set->set_id),"\n", 861 # CGI::hidden("problem", $problem->problem_id),"\n", 862 # CGI::hidden("displayMode", $self->{displayMode}),"\n", 863 # CGI::hidden("showOldAnswers", $will{showOldAnswers}),"\n", 864 # CGI::hidden("showCorrectAnswers", $will{showCorrectAnswers}),"\n", 865 # CGI::hidden("showHints", $will{showHints}),"\n", 866 # CGI::hidden("showSolutions", $will{showSolutions}),"\n", 867 # CGI::p({-align=>"left"}, 868 # CGI::submit(-name=>"feedbackForm", -label=>"Email instructor") 869 # ), 870 # CGI::endform(),"\n"; 871 872 # feedback form url 873 my $feedbackPage = $urlpath->newFromModule("WeBWorK::ContentGenerator::Feedback", 874 courseID => $courseName); 875 my $feedbackURL = $self->systemLink($feedbackPage, authen => 0); # no authen info for form action 876 877 #print feedback form 878 print 879 CGI::start_form(-method=>"POST", -action=>$feedbackURL),"\n", 880 $self->hidden_authen_fields,"\n", 881 CGI::hidden("module", __PACKAGE__),"\n", 882 CGI::hidden("set", $set->set_id),"\n", 883 CGI::hidden("problem", $problem->problem_id),"\n", 884 CGI::hidden("displayMode", $self->{displayMode}),"\n", 885 CGI::hidden("showOldAnswers", $will{showOldAnswers}),"\n", 886 CGI::hidden("showCorrectAnswers", $will{showCorrectAnswers}),"\n", 887 CGI::hidden("showHints", $will{showHints}),"\n", 888 CGI::hidden("showSolutions", $will{showSolutions}),"\n", 889 CGI::p({-align=>"left"}, 890 CGI::submit(-name=>"feedbackForm", -label=>"Email instructor") 891 ), 892 CGI::endform(),"\n"; 893 894 # FIXME print editor link 895 print $editorLink; #empty unless it is appropriate to have an editor link. 896 897 print CGI::end_div(); 898 899 # warning output 900 #if ($pg->{warnings} ne "") { 901 # print CGI::hr(), $self->warningOutput($pg->{warnings}); 902 #} 903 904 # debugging stuff 905 if (0) { 906 print 907 CGI::hr(), 908 CGI::h2("debugging information"), 909 CGI::h3("form fields"), 910 ref2string($self->{formFields}), 911 CGI::h3("user object"), 912 ref2string($self->{user}), 913 CGI::h3("set object"), 914 ref2string($set), 915 CGI::h3("problem object"), 916 ref2string($problem), 917 CGI::h3("PG object"), 918 ref2string($pg, {'WeBWorK::PG::Translator' => 1}); 919 } 920 921 return ""; 922 } 923 924 ##### output utilities ##### 925 926 sub attemptResults { 927 my $self = shift; 928 my $pg = shift; 929 my $showAttemptAnswers = shift; 930 my $showCorrectAnswers = shift; 931 my $showAttemptResults = $showAttemptAnswers && shift; 932 my $showSummary = shift; 933 my $showAttemptPreview = shift || 0; 934 935 my $ce = $self->r->ce; 936 937 my $problemResult = $pg->{result}; # the overall result of the problem 938 my @answerNames = @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }; 939 940 my $showMessages = $showAttemptAnswers && grep { $pg->{answers}->{$_}->{ans_message} } @answerNames; 941 942 my $basename = "equation-" . $self->{set}->psvn. "." . $self->{problem}->problem_id . "-preview"; 943 my $imgGen = WeBWorK::PG::ImageGenerator->new( 944 tempDir => $ce->{webworkDirs}->{tmp}, 945 latex => $ce->{externalPrograms}->{latex}, 946 dvipng => $ce->{externalPrograms}->{dvipng}, 947 useCache => 1, 948 cacheDir => $ce->{webworkDirs}->{equationCache}, 949 cacheURL => $ce->{webworkURLs}->{equationCache}, 950 cacheDB => $ce->{webworkFiles}->{equationCacheDB}, 951 ); 952 953 my $header; 954 #$header .= CGI::th("Part"); 955 $header .= $showAttemptAnswers ? CGI::th("Entered") : ""; 956 $header .= $showAttemptPreview ? CGI::th("Answer Preview") : ""; 957 $header .= $showCorrectAnswers ? CGI::th("Correct") : ""; 958 $header .= $showAttemptResults ? CGI::th("Result") : ""; 959 $header .= $showMessages ? CGI::th("Messages") : ""; 960 my @tableRows = ( $header ); 961 my $numCorrect; 962 foreach my $name (@answerNames) { 963 my $answerResult = $pg->{answers}->{$name}; 964 my $studentAnswer = $answerResult->{student_ans}; # original_student_ans 965 my $preview = ($showAttemptPreview 966 ? $self->previewAnswer($answerResult, $imgGen) 967 : ""); 968 my $correctAnswer = $answerResult->{correct_ans}; 969 my $answerScore = $answerResult->{score}; 970 my $answerMessage = $showMessages ? $answerResult->{ans_message} : ""; 971 #FIXME --Can we be sure that $answerScore is an integer-- could the problem give partial credit? 972 $numCorrect += $answerScore > 0; 973 my $resultString = $answerScore == 1 ? "correct" : "incorrect"; 974 975 # get rid of the goofy prefix on the answer names (supposedly, the format 976 # of the answer names is changeable. this only fixes it for "AnSwEr" 977 #$name =~ s/^AnSwEr//; 978 979 my $row; 980 #$row .= CGI::td($name); 981 $row .= $showAttemptAnswers ? CGI::td($self->nbsp($studentAnswer)) : ""; 982 $row .= $showAttemptPreview ? CGI::td($self->nbsp($preview)) : ""; 983 $row .= $showCorrectAnswers ? CGI::td($self->nbsp($correctAnswer)) : ""; 984 $row .= $showAttemptResults ? CGI::td($self->nbsp($resultString)) : ""; 985 $row .= $showMessages ? CGI::td($self->nbsp($answerMessage)) : ""; 986 push @tableRows, $row; 987 } 988 989 # render equation images 990 $imgGen->render(refresh => 1); 991 992 # my $numIncorrectNoun = scalar @answerNames == 1 ? "question" : "questions"; 993 my $scorePercent = sprintf("%.0f%%", $problemResult->{score} * 100); 994 # FIXME -- I left the old code in in case we have to back out. 995 # my $summary = "On this attempt, you answered $numCorrect out of " 996 # . scalar @answerNames . " $numIncorrectNoun correct, for a score of $scorePercent."; 997 my $summary = ""; 998 if (scalar @answerNames == 1) { 999 if ($numCorrect == scalar @answerNames) { 1000 $summary .= CGI::div({class=>"ResultsWithoutError"},"The above answer is correct."); 1001 } else { 1002 $summary .= CGI::div({class=>"ResultsWithError"},"The above answer is NOT correct."); 1003 } 1004 } else { 1005 if ($numCorrect == scalar @answerNames) { 1006 $summary .= CGI::div({class=>"ResultsWithoutError"},"All of the above answers are correct."); 1007 } else { 1008 $summary .= CGI::div({class=>"ResultsWithError"},"At least one of the above answers is NOT correct."); 1009 } 1010 } 1011 1012 return 1013 CGI::table({-class=>"attemptResults"}, CGI::Tr(\@tableRows)) 1014 . ($showSummary ? CGI::p({class=>'emphasis'},$summary) : ""); 1015 } 1016 1017 #sub nbsp { 1018 # my $str = shift; 1019 # ($str =~/\S/) ? $str : ' ' ; # returns non-breaking space for empty strings 1020 # # tricky cases: $str =0; 1021 # # $str is a complex number 1022 #} 1023 1024 sub viewOptions { 1025 my ($self) = @_; 1026 my $ce = $self->r->ce; 1027 1028 my $displayMode = $self->{displayMode}; 1029 my %must = %{ $self->{must} }; 1030 my %can = %{ $self->{can} }; 1031 my %will = %{ $self->{will} }; 1032 1033 my $optionLine; 1034 $can{showOldAnswers} and $optionLine .= join "", 1035 "Show: ".CGI::br(), 1036 CGI::checkbox( 1037 -name => "showOldAnswers", 1038 -checked => $will{showOldAnswers}, 1039 -label => "Saved answers", 1040 ), " ".CGI::br(); 1041 1042 $optionLine and $optionLine .= join "", CGI::br(); 1043 1044 my %display_modes = %{WeBWorK::PG::DISPLAY_MODES()}; 1045 my @active_modes = grep { exists $display_modes{$_} } 1046 @{$ce->{pg}->{displayModes}}; 1047 my $modeLine = (scalar(@active_modes)>1) ? 1048 "View equations as: ".CGI::br(). 1049 CGI::radio_group( 1050 -name => "displayMode", 1051 -values => \@active_modes, 1052 -default => $displayMode, 1053 -linebreak=>'true', 1054 -labels => { 1055 plainText => "plain", 1056 formattedText => "formatted", 1057 images => "images", 1058 jsMath => "jsMath", 1059 asciimath => "asciimath", 1060 }, 1061 ). CGI::br().CGI::hr() : ''; 1062 1063 return CGI::div({-style=>"border: thin groove; padding: 1ex; margin: 2ex align: left"}, 1064 $modeLine, 1065 $optionLine, 1066 CGI::submit(-name=>"redisplay", -label=>"Save Options"), 1067 ); 1068 } 1069 1070 sub previewAnswer { 1071 my ($self, $answerResult, $imgGen) = @_; 1072 my $ce = $self->r->ce; 1073 my $effectiveUser = $self->{effectiveUser}; 1074 my $set = $self->{set}; 1075 my $problem = $self->{problem}; 1076 my $displayMode = $self->{displayMode}; 1077 1078 # note: right now, we have to do things completely differently when we are 1079 # rendering math from INSIDE the translator and from OUTSIDE the translator. 1080 # so we'll just deal with each case explicitly here. there's some code 1081 # duplication that can be dealt with later by abstracting out tth/dvipng/etc. 1082 1083 my $tex = $answerResult->{preview_latex_string}; 1084 1085 return "" unless defined $tex and $tex ne ""; 1086 1087 if ($displayMode eq "plainText") { 1088 return $tex; 1089 } elsif ($displayMode eq "formattedText") { 1090 my $tthCommand = $ce->{externalPrograms}->{tth} 1091 . " -L -f5 -r 2> /dev/null <<END_OF_INPUT; echo > /dev/null\n" 1092 . "\\(".$tex."\\)\n" 1093 . "END_OF_INPUT\n"; 1094 1095 # call tth 1096 my $result = `$tthCommand`; 1097 if ($?) { 1098 return "<b>[tth failed: $? $@]</b>"; 1099 } 1100 return $result; 1101 } elsif ($displayMode eq "images") { 1102 $imgGen->add($tex); 1103 } elsif ($displayMode eq "jsMath") { 1104 1105 return '<DIV CLASS="math">'.$tex.'</DIV>' ; 1106 1107 1108 1109 1110 } 1111 } 1112 1113 ##### permission queries ##### 1114 1115 # this stuff should be abstracted out into the permissions system 1116 # however, the permission system only knows about things in the 1117 # course environment and the username. hmmm... 1118 1119 # also, i should fix these so that they have a consistent calling 1120 # format -- perhaps: 1121 # canPERM($ce, $user, $set, $problem, $permissionLevel) 1122 1123 sub canShowCorrectAnswers($$) { 1124 my ($permissionLevel, $answerDate) = @_; 1125 return $permissionLevel > 0 || time > $answerDate; 1126 } 1127 1128 sub canShowSolutions($$) { 1129 my ($permissionLevel, $answerDate) = @_; 1130 return canShowCorrectAnswers($permissionLevel, $answerDate); 1131 } 1132 1133 sub canRecordAnswers($$$$$) { 1134 my ($permissionLevel, $openDate, $dueDate, $maxAttempts, $attempts) = @_; 1135 my $permHigh = $permissionLevel > 0; 1136 my $timeOK = time >= $openDate && time <= $dueDate; 1137 my $attemptsOK = $maxAttempts == -1 || $attempts <= $maxAttempts; 1138 my $recordAnswers = $permHigh || ($timeOK && $attemptsOK); 1139 return $recordAnswers; 1140 } 1141 1142 sub canCheckAnswers($$) { 1143 my ($permissionLevel, $answerDate) = @_; 1144 my $permHigh = $permissionLevel > 0; 1145 my $timeOK = time >= $answerDate; 1146 my $recordAnswers = $permHigh || $timeOK; 1147 return $recordAnswers; 1148 } 1149 1150 sub mustRecordAnswers($) { 1151 my ($permissionLevel) = @_; 1152 return $permissionLevel == 0; 1153 } 1154 1155 1156 # FIXME: does this even get used? 1157 sub submiterror { 1158 my $self = shift; 1159 my $submiterror = (defined($self->{submiterror}) ) ? $self->{submiterror} : ''; 1160 $submiterror; 1161 } 1162 1;
| aubreyja at gmail dot com | ViewVC Help |
| Powered by ViewVC 1.0.9 |