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| 1 : | malsyned | 353 | package WeBWorK::ContentGenerator::Problem; |
| 2 : | sh002i | 415 | use base qw(WeBWorK::ContentGenerator); |
| 3 : | malsyned | 396 | |
| 4 : | use strict; | ||
| 5 : | use warnings; | ||
| 6 : | sh002i | 424 | use CGI qw(:html :form); |
| 7 : | sh002i | 429 | use WeBWorK::Utils qw(ref2string encodeAnswers decodeAnswers); |
| 8 : | sh002i | 415 | use WeBWorK::PG; |
| 9 : | sh002i | 424 | use WeBWorK::Form; |
| 10 : | malsyned | 353 | |
| 11 : | sh002i | 424 | # user |
| 12 : | # key | ||
| 13 : | sh002i | 415 | # |
| 14 : | sh002i | 424 | # displayMode |
| 15 : | # showOldAnswers | ||
| 16 : | # showCorrectAnswers | ||
| 17 : | # showHints | ||
| 18 : | # showSolutions | ||
| 19 : | sh002i | 415 | # |
| 20 : | sh002i | 425 | # AnSwEr# - answer blanks in problem |
| 21 : | # | ||
| 22 : | sh002i | 429 | # redisplay - name of the "Redisplay Problem" button |
| 23 : | # submitAnswers - name of "Submit Answers" button | ||
| 24 : | gage | 392 | |
| 25 : | malsyned | 353 | sub title { |
| 26 : | sh002i | 424 | my ($self, $setName, $problemNumber) = @_; |
| 27 : | my $userName = $self->{r}->param('user'); | ||
| 28 : | return "Problem $problemNumber of problem set $setName for $userName"; | ||
| 29 : | malsyned | 353 | } |
| 30 : | |||
| 31 : | sh002i | 429 | # TODO: |
| 32 : | # :) enforce permissions for showCorrectAnswers and showSolutions | ||
| 33 : | # (use $PRIV = $mustPRIV || ($canPRIV && $wantPRIV) -- cool syntax!) | ||
| 34 : | # 2. if answers were not submitted and there are student answers in the DB, | ||
| 35 : | # decode them and put them into $formFields for the translator | ||
| 36 : | # 3. Latex2HTML massaging code | ||
| 37 : | # 4. store submitted answers hash in database for sticky answers | ||
| 38 : | # 5. deal with the results of answer evaluation and grading :p | ||
| 39 : | # :) introduce a recordAnswers option, which works on the same principle as | ||
| 40 : | # the other permission-based options | ||
| 41 : | # 7. make warnings work | ||
| 42 : | |||
| 43 : | malsyned | 353 | sub body { |
| 44 : | sh002i | 424 | my ($self, $setName, $problemNumber) = @_; |
| 45 : | my $courseEnv = $self->{courseEnvironment}; | ||
| 46 : | my $r = $self->{r}; | ||
| 47 : | my $userName = $r->param('user'); | ||
| 48 : | malsyned | 353 | |
| 49 : | sh002i | 424 | # fix format of setName and problem |
| 50 : | $setName =~ s/^set//; | ||
| 51 : | $problemNumber =~ s/^prob//; | ||
| 52 : | gage | 388 | |
| 53 : | sh002i | 429 | ##### database setup ##### |
| 54 : | |||
| 55 : | sh002i | 424 | my $classlist = WeBWorK::DB::Classlist->new($courseEnv); |
| 56 : | sh002i | 429 | my $wwdb = WeBWorK::DB::WW->new($courseEnv); |
| 57 : | my $authdb = WeBWorK::DB::Auth->new($courseEnv); | ||
| 58 : | |||
| 59 : | sh002i | 424 | my $user = $classlist->getUser($userName); |
| 60 : | my $set = $wwdb->getSet($userName, $setName); | ||
| 61 : | my $problem = $wwdb->getProblem($userName, $setName, $problemNumber); | ||
| 62 : | my $psvn = $wwdb->getPSVN($userName, $setName); | ||
| 63 : | sh002i | 429 | my $permissionLevel = $authdb->getPermissions($userName); |
| 64 : | malsyned | 396 | |
| 65 : | sh002i | 429 | ##### form processing ##### |
| 66 : | |||
| 67 : | sh002i | 425 | # set options from form fields (see comment at top of file for names) |
| 68 : | sh002i | 424 | my $displayMode = $r->param("displayMode") || $courseEnv->{pg}->{options}->{displayMode}; |
| 69 : | sh002i | 425 | my $redisplay = $r->param("redisplay"); |
| 70 : | sh002i | 429 | my $submitAnswers = $r->param("submitAnswers"); |
| 71 : | gage | 388 | |
| 72 : | sh002i | 429 | my $wantShowOldAnswers = $r->param("showOldAnswers") || $courseEnv->{pg}->{options}->{showOldAnswers}; |
| 73 : | my $wantShowCorrectAnswers = $r->param("showCorrectAnswers") || $courseEnv->{pg}->{options}->{showCorrectAnswers}; | ||
| 74 : | my $wantShowHints = $r->param("showHints") || $courseEnv->{pg}->{options}->{showHints}; | ||
| 75 : | my $wantShowSolutions = $r->param("showSolutions") || $courseEnv->{pg}->{options}->{showSolutions}; | ||
| 76 : | my $wantRecordAnswers = $r->param("recordAnswers") || 1; | ||
| 77 : | |||
| 78 : | sh002i | 424 | # coerce form fields into CGI::Vars format |
| 79 : | my $formFields = { WeBWorK::Form->new_from_paramable($r)->Vars }; | ||
| 80 : | gage | 392 | |
| 81 : | sh002i | 429 | ##### permissions ##### |
| 82 : | gage | 392 | |
| 83 : | sh002i | 429 | # does the user have permission to use certain options? |
| 84 : | my $canShowOldAnswers = 1; | ||
| 85 : | my $canShowCorrectAnswers = canShowCorrectAnswers($permissionLevel, $set->answer_date); | ||
| 86 : | my $canShowHints = 1; | ||
| 87 : | my $canShowSolutions = canShowSolutions($permissionLevel, $set->answer_date); | ||
| 88 : | my $canRecordAnswers = canRecordAnswers($permissionLevel, $set->open_date, $set->due_date); | ||
| 89 : | |||
| 90 : | # are certain options enforced? | ||
| 91 : | my $mustShowOldAnswers = 0; | ||
| 92 : | my $mustShowCorrectAnswers = 0; | ||
| 93 : | my $mustShowHints = 0; | ||
| 94 : | my $mustShowSolutions = 0; | ||
| 95 : | my $mustRecordAnswers = mustRecordAnswers($permissionLevel); | ||
| 96 : | |||
| 97 : | # final values for options | ||
| 98 : | my $showOldAnswers = $mustShowOldAnswers || ($canShowOldAnswers && $wantShowOldAnswers ); | ||
| 99 : | my $showCorrectAnswers = $mustShowCorrectAnswers || ($canShowCorrectAnswers && $wantShowCorrectAnswers); | ||
| 100 : | my $showHints = $mustShowHints || ($canShowHints && $wantShowHints ); | ||
| 101 : | my $showSolutions = $mustShowSolutions || ($canShowSolutions && $wantShowSolutions ); | ||
| 102 : | my $recordAnswers = $mustRecordAnswers || ($canRecordAnswers && $wantRecordAnswers ); | ||
| 103 : | |||
| 104 : | ##### sticky answers ##### | ||
| 105 : | |||
| 106 : | # [TODO #2] | ||
| 107 : | |||
| 108 : | if (not $submitAnswers and $showOldAnswers) { | ||
| 109 : | # only do this if new answers are NOT being submitted | ||
| 110 : | my %oldAnswers = decodeAnswers($problem->last_answer); | ||
| 111 : | $formFields->{$_} = $oldAnswers{$_} foreach keys %oldAnswers; | ||
| 112 : | } | ||
| 113 : | |||
| 114 : | ##### translation ##### | ||
| 115 : | |||
| 116 : | sh002i | 424 | my $pg = WeBWorK::PG->new( |
| 117 : | $courseEnv, | ||
| 118 : | $r->param('user'), | ||
| 119 : | $r->param('key'), | ||
| 120 : | $setName, | ||
| 121 : | $problemNumber, | ||
| 122 : | { # translation options | ||
| 123 : | displayMode => $displayMode, | ||
| 124 : | showHints => $showHints, | ||
| 125 : | showSolutions => $showSolutions, | ||
| 126 : | sh002i | 429 | # try leaving processAnswers on all the time: |
| 127 : | processAnswers => 1, #$submitAnswers ? 1 : 0, | ||
| 128 : | sh002i | 424 | }, |
| 129 : | $formFields | ||
| 130 : | ); | ||
| 131 : | gage | 392 | |
| 132 : | sh002i | 429 | # handle any errors in translation |
| 133 : | sh002i | 425 | if ($pg->{flags}->{error_flag}) { |
| 134 : | # there was an error in translation | ||
| 135 : | sh002i | 429 | |
| 136 : | h2("Software Error"), | ||
| 137 : | translationError($pg->{errors}, $pg->{body_text}); | ||
| 138 : | |||
| 139 : | sh002i | 425 | return ""; |
| 140 : | } | ||
| 141 : | sh002i | 415 | |
| 142 : | sh002i | 429 | # massage LaTeX2HTML [TODO #3] |
| 143 : | |||
| 144 : | ##### answer processing ##### | ||
| 145 : | |||
| 146 : | # if answers were submitted: | ||
| 147 : | if ($submitAnswers) { | ||
| 148 : | # store answers in DB for sticky answers [TODO #4] | ||
| 149 : | my %answersToStore; | ||
| 150 : | my %answerHash = %{ $pg->{answers} }; | ||
| 151 : | $answersToStore{$_} = $answerHash{$_}->{original_student_ans} | ||
| 152 : | foreach (keys %answerHash); | ||
| 153 : | my $answerString = encodeAnswers(%answersToStore, | ||
| 154 : | @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }); | ||
| 155 : | $problem->last_answer($answerString); | ||
| 156 : | $wwdb->setProblem($problem); | ||
| 157 : | |||
| 158 : | # store score in DB if it makes sense [TODO #5] | ||
| 159 : | |||
| 160 : | # print the answer summary table | ||
| 161 : | |||
| 162 : | h3("Results of your latest attempt"), | ||
| 163 : | attemptResults($pg, $showCorrectAnswers, | ||
| 164 : | $pg->{flags}->{showPartialCorrectAnswers}), | ||
| 165 : | hr(); | ||
| 166 : | sh002i | 425 | } |
| 167 : | |||
| 168 : | sh002i | 429 | ##### output ##### |
| 169 : | sh002i | 425 | |
| 170 : | # view options | ||
| 171 : | # what i'd really like to do here is: | ||
| 172 : | # - preserve the answers currently in the form fields | ||
| 173 : | # - display the answer summary box | ||
| 174 : | # - NOT record answers UNDER ANY CIRCUMSTANCES! | ||
| 175 : | gage | 392 | |
| 176 : | sh002i | 429 | # main form |
| 177 : | |||
| 178 : | startform("POST", $r->uri), | ||
| 179 : | $self->hidden_authen_fields, | ||
| 180 : | p($pg->{body_text}), | ||
| 181 : | p(submit(-name=>"submitAnswers", -label=>"Submit Answers")), | ||
| 182 : | viewOptions($displayMode, $showOldAnswers, $showCorrectAnswers, | ||
| 183 : | $showHints, $showSolutions), | ||
| 184 : | endform(), | ||
| 185 : | hr(); | ||
| 186 : | |||
| 187 : | sh002i | 424 | # debugging stuff |
| 188 : | sh002i | 429 | |
| 189 : | h2("debugging information"), | ||
| 190 : | h3("form fields"), | ||
| 191 : | ref2string($formFields), | ||
| 192 : | h3("user object"), | ||
| 193 : | ref2string($user), | ||
| 194 : | h3("set object"), | ||
| 195 : | ref2string($set), | ||
| 196 : | h3("problem object"), | ||
| 197 : | ref2string($problem), | ||
| 198 : | h3("PG object"), | ||
| 199 : | ref2string($pg, {'WeBWorK::PG::Translator' => 1}); | ||
| 200 : | gage | 392 | |
| 201 : | sh002i | 424 | return ""; |
| 202 : | malsyned | 353 | } |
| 203 : | |||
| 204 : | sh002i | 429 | # ----- |
| 205 : | |||
| 206 : | sub translationError($$) { | ||
| 207 : | my ($error, $details) = @_; | ||
| 208 : | return | ||
| 209 : | p(<<EOF), | ||
| 210 : | WeBWorK has encountered a software error while attempting to process this problem. | ||
| 211 : | It is likely that there is an error in the problem itself. | ||
| 212 : | If you are a student, contact your professor to have the error corrected. | ||
| 213 : | If you are a professor, please consut the error output below for more informaiton. | ||
| 214 : | EOF | ||
| 215 : | h3("Error messages"), blockquote(pre($error)), | ||
| 216 : | h3("Error context"), blockquote(pre($details)); | ||
| 217 : | } | ||
| 218 : | |||
| 219 : | sub attemptResults($$$) { | ||
| 220 : | sh002i | 425 | my $pg = shift; |
| 221 : | my $showCorrectAnswers = shift; | ||
| 222 : | my $showAttemptResults = shift; | ||
| 223 : | my $problemResult = $pg->{result}; # the overall result of the problem | ||
| 224 : | my @answerNames = @{ $pg->{flags}->{ANSWER_ENTRY_ORDER} }; | ||
| 225 : | |||
| 226 : | my $header = th("answer") . th("attempt"); | ||
| 227 : | $header .= $showCorrectAnswers ? th("correct") : ""; | ||
| 228 : | $header .= $showAttemptResults ? th("result") : ""; | ||
| 229 : | $header .= th("messages"); | ||
| 230 : | my @tableRows = ( $header ); | ||
| 231 : | my $numCorrect; | ||
| 232 : | foreach my $name (@answerNames) { | ||
| 233 : | my $answerResult = $pg->{answers}->{$name}; | ||
| 234 : | sh002i | 429 | my $studentAnswer = $answerResult->{student_ans}; # original_student_ans |
| 235 : | sh002i | 425 | my $correctAnswer = $answerResult->{correct_ans}; |
| 236 : | my $answerScore = $answerResult->{score}; | ||
| 237 : | my $answerMessage = $answerResult->{ans_message}; | ||
| 238 : | |||
| 239 : | $numCorrect += $answerScore > 0; | ||
| 240 : | my $resultString = $answerScore ? "correct :^)" : "incorrect >:("; | ||
| 241 : | |||
| 242 : | my $row = td($name) . td($studentAnswer); | ||
| 243 : | $row .= $showCorrectAnswers ? td($correctAnswer) : ""; | ||
| 244 : | $row .= $showAttemptResults ? td($resultString) : ""; | ||
| 245 : | $row .= $answerMessage ? td($answerMessage) : ""; | ||
| 246 : | push @tableRows, $row; | ||
| 247 : | } | ||
| 248 : | |||
| 249 : | my $scorePercent = int ($problemResult->{score} * 100) . "\%"; | ||
| 250 : | my $message = i($problemResult->{msg}); | ||
| 251 : | my $summary = "You answered $numCorrect questions out of " | ||
| 252 : | . scalar @answerNames . " correct, for a score of $scorePercent."; | ||
| 253 : | return table({-border=>1}, Tr(\@tableRows)) . p($message, br(), $summary); | ||
| 254 : | } | ||
| 255 : | |||
| 256 : | sh002i | 429 | sub viewOptions($$$$$) { |
| 257 : | my ($displayMode, $showOldAnswers, $showCorrectAnswers, | ||
| 258 : | $showHints, $showSolutions) = @_; | ||
| 259 : | return div({-style=>"border: thin groove; padding: 1ex; margin: 2ex"}, | ||
| 260 : | "View equations as: ", | ||
| 261 : | radio_group( | ||
| 262 : | -name => "displayMode", | ||
| 263 : | -values => ['plainText', 'formattedText', 'images'], | ||
| 264 : | -default => $displayMode, | ||
| 265 : | -labels => { | ||
| 266 : | plainText => "plain text", | ||
| 267 : | formattedText => "formatted text", | ||
| 268 : | images => "images", | ||
| 269 : | } | ||
| 270 : | ), br(), | ||
| 271 : | "Show: ", | ||
| 272 : | checkbox( | ||
| 273 : | -name => "showOldAnswers", | ||
| 274 : | -checked => $showOldAnswers, | ||
| 275 : | -label => "Old answers", | ||
| 276 : | ), " ", | ||
| 277 : | checkbox( | ||
| 278 : | -name => "showCorrectAnswers", | ||
| 279 : | -checked => $showCorrectAnswers, | ||
| 280 : | -label => "Correct answers", | ||
| 281 : | ), " ", | ||
| 282 : | checkbox( | ||
| 283 : | -name => "showHints", | ||
| 284 : | -checked => $showHints, | ||
| 285 : | -label => "Hints", | ||
| 286 : | ), " ", | ||
| 287 : | checkbox( | ||
| 288 : | -name => "showSolutions", | ||
| 289 : | -checked => $showSolutions, | ||
| 290 : | -label => "Solutions", | ||
| 291 : | ), br(), | ||
| 292 : | submit(-name=>"redisplay", -label=>"Redisplay Problem"), | ||
| 293 : | ); | ||
| 294 : | } | ||
| 295 : | |||
| 296 : | # ----- | ||
| 297 : | |||
| 298 : | # this stuff should be abstracted out into the permissions system | ||
| 299 : | # however, the permission system only knows about things in the | ||
| 300 : | # course environment and the username. hmmm... | ||
| 301 : | |||
| 302 : | sub canShowCorrectAnswers($$) { | ||
| 303 : | my ($permissionLevel, $answerDate) = @_; | ||
| 304 : | return $permissionLevel > 0 || time > $answerDate; | ||
| 305 : | } | ||
| 306 : | |||
| 307 : | sub canShowSolutions($$) { | ||
| 308 : | my ($permissionLevel, $answerDate) = @_; | ||
| 309 : | return canShowCorrectAnswers($permissionLevel, $answerDate); | ||
| 310 : | } | ||
| 311 : | |||
| 312 : | sub canRecordAnswers($$$) { | ||
| 313 : | my ($permissionLevel, $openDate, $dueDate) = @_; | ||
| 314 : | return $permissionLevel > 0 || (time >= $openDate && time <= $dueDate); | ||
| 315 : | } | ||
| 316 : | |||
| 317 : | sub mustRecordAnswers($) { | ||
| 318 : | my ($permissionLevel) = @_; | ||
| 319 : | return $permissionLevel == 0; | ||
| 320 : | } | ||
| 321 : | |||
| 322 : | sh002i | 415 | 1; |
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