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Diff for /loncom/homework/response.pm between versions 1.87 and 1.127

version 1.87, 2003/10/27 19:27:09 version 1.127, 2005/11/03 23:00:53
Line 28 Line 28
   
 package Apache::response;  package Apache::response;
 use strict;  use strict;
   use Apache::lonlocal;
   use Apache::lonnet;
   
 BEGIN {  BEGIN {
     &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse'));      &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse'));
Line 45  sub start_response { Line 47  sub start_response {
     push (@Apache::inputtags::response,$id);      push (@Apache::inputtags::response,$id);
     push (@Apache::inputtags::responselist,$id);      push (@Apache::inputtags::responselist,$id);
     @Apache::inputtags::inputlist=();      @Apache::inputtags::inputlist=();
       if ($Apache::inputtags::part eq '' && 
    !$Apache::lonhomework::ignore_response_errors) {
    &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
       }
       if ($Apache::inputtags::response_with_no_part &&
    $Apache::inputtags::part ne '0') {
    &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
       }
       if ($Apache::inputtags::part eq '0') {
    $Apache::inputtags::response_with_no_part=1;
       }
     return $id;      return $id;
 }  }
   
Line 58  sub start_hintresponse { Line 71  sub start_hintresponse {
     my ($parstack,$safeeval)=@_;      my ($parstack,$safeeval)=@_;
     my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);      my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
     if ($id eq '') { $id = $Apache::lonxml::curdepth; }      if ($id eq '') { $id = $Apache::lonxml::curdepth; }
     push (@Apache::inputtags::response,$id);      push (@Apache::inputtags::hint,$id);
     push (@Apache::inputtags::responselist,$id);      push (@Apache::inputtags::hintlist,$id);
     push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);      push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
     return $id;      return $id;
 }  }
   
 sub end_hintresponse {  sub end_hintresponse {
     pop @Apache::inputtags::response;      pop @Apache::inputtags::hint;
     if (defined($Apache::inputtags::paramstack[-1])) {      if (defined($Apache::inputtags::paramstack[-1])) {
  %Apache::inputtags::params=   %Apache::inputtags::params=
     @{ pop(@Apache::inputtags::paramstack) };      @{ pop(@Apache::inputtags::paramstack) };
Line 73  sub end_hintresponse { Line 86  sub end_hintresponse {
     return '';      return '';
 }  }
   
 # used by response to set the non-safe space random number generator to something  my @randomseeds;
 # that is stable and unique based on the part number and response number  sub pushrandomnumber {
 sub setrandomnumber {      my $rand_alg=&Apache::lonnet::get_rand_alg();
     my $rndseed;      if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
     if ($ENV{'request.state'} eq "construct") {   $rand_alg eq '64bit2') {
  $rndseed=$ENV{'form.rndseed'};   # do nothing
  if (!$rndseed) { $rndseed=time; }  
     } else {      } else {
  $rndseed=&Apache::lonnet::rndseed();   my @seed=&Math::Random::random_get_seed();
    push(@randomseeds,\@seed);
     }      }
       &Apache::response::setrandomnumber(@_);
   }
   sub poprandomnumber {
       my $rand_alg=&Apache::lonnet::get_rand_alg();
       if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
    $rand_alg eq '64bit2') {
    return;
       }
       my $seed=pop(@randomseeds);
       if ($seed) {
    &Math::Random::random_set_seed(@$seed);
       } else {
    &Apache::lonxml::error("Unable to restore random algorithm.");
       }
   }
   
   sub setrandomnumber {
       my ($ignore_id2) = @_;
       my $rndseed;
       $rndseed=&Apache::structuretags::setup_rndseed();
       if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
     &Apache::lonxml::debug("randseed $rndseed");      &Apache::lonxml::debug("randseed $rndseed");
     #  $rndseed=unpack("%32i",$rndseed);      #  $rndseed=unpack("%32i",$rndseed);
     my $rndmod=(&Apache::lonnet::numval($Apache::inputtags::part) << 10);      my $rand_alg=&Apache::lonnet::get_rand_alg();
     if (defined($Apache::inputtags::response['-1'])) {      my ($rndmod,$rndmod2);
        $rndmod+=&Apache::lonnet::numval($Apache::inputtags::response[-1]);  
     }      my ($id1,$id2,$shift_amt);
     if ($rndseed =~/,/) {      if ($Apache::lonhomework::parsing_a_problem) {
  {   $id1=$Apache::inputtags::part;
     use integer;   if (defined($Apache::inputtags::response[-1])) {
     my ($num1,$num2)=split(/,/,$rndseed);      $id2=$Apache::inputtags::response[-1];
     $num1+=$rndmod;   }
     $num2+=$rndmod;   $shift_amt=scalar(@Apache::inputtags::responselist);
     $rndseed="$num1,$num2";      } elsif ($Apache::lonhomework::parsing_a_task) {
    $id1=$Apache::bridgetask::dimension;
    if (!$ignore_id2 && defined($Apache::bridgetask::instance[-1])) {
       $id2=$Apache::bridgetask::instance[-1];
    }
    $shift_amt=scalar(@Apache::bridgetask::instance);
       } 
       &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
       if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
    $rand_alg eq '64bit2') {
    $rndmod=(&Apache::lonnet::numval($id1) << 10);
    if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
       } elsif ($rand_alg eq '64bit3') {
    $rndmod=(&Apache::lonnet::numval2($id1) << 10);
    if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
       } elsif ($rand_alg eq '64bit4') {
    my $shift=(4*$shift_amt)%30;
    $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
    if (defined($id2)) {
       $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
  }   }
     } else {      } else {
    ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
       }
   
       if ($rndseed =~/([,:])/) {
    my $char=$1;
    use integer;
    my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
    $num1+=$rndmod;
    $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
    if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
    $rndseed=$num1.$char.$num2;
       } else {
  $rndseed+=$rndmod;   $rndseed+=$rndmod;
    if($Apache::lonnet::_64bit) {
       use integer;
       $rndseed=(($rndseed<<32)>>32);
    }
     }      }
       &Apache::lonxml::debug("randseed $rndmod $rndseed");
     &Apache::lonnet::setup_random_from_rndseed($rndseed);      &Apache::lonnet::setup_random_from_rndseed($rndseed);
     &Apache::lonxml::debug("randseed $rndseed");  
     return '';      return '';
 }  }
   
Line 115  sub meta_parameter_write { Line 184  sub meta_parameter_write {
     }      }
     $result.=            ' name="'.$name.'"'.      $result.=            ' name="'.$name.'"'.
                          ' type="'.$type.'"'.                           ' type="'.$type.'"'.
 ($default?' default="'.$default.'"':'').  (defined($default)?' default="'.$default.'"':'').
 ($display?' display="'.$display.' [Part: '.$partref.']"':'')  (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
              .'></parameter>'               .'></parameter>'
              ."\n";               ."\n";
     return $result;      return $result;
Line 181  sub meta_part_order { Line 250  sub meta_part_order {
     if (@Apache::inputtags::partlist) {      if (@Apache::inputtags::partlist) {
  my @parts=@Apache::inputtags::partlist;   my @parts=@Apache::inputtags::partlist;
  shift(@parts);   shift(@parts);
  return '<partorder>'.join(',',@parts).'</partorder>';   return '<partorder>'.join(',',@parts).'</partorder>'."\n";
     } else {      } else {
  return '<partorder>0</partorder>';   return '<partorder>0</partorder>'."\n";
       }
   }
   
   sub meta_response_order {
       if (@Apache::inputtags::responselist) {
    return '<responseorder>'.join(',',@Apache::inputtags::responselist).
       '</responseorder>'."\n";
     }      }
 }  }
   
Line 192  sub check_for_previous { Line 268  sub check_for_previous {
     my %previous;      my %previous;
     $previous{'used'} = 0;      $previous{'used'} = 0;
     foreach my $key (sort(keys(%Apache::lonhomework::history))) {      foreach my $key (sort(keys(%Apache::lonhomework::history))) {
  if ($key =~ /resource\.$partid\.$id\.submission/) {   if ($key =~ /resource\.$partid\.$id\.submission$/) {
     &Apache::lonxml::debug("Trying $key");      &Apache::lonxml::debug("Trying $key");
     my $pastresponse=$Apache::lonhomework::history{$key};      my $pastresponse=$Apache::lonhomework::history{$key};
     if ($pastresponse eq $curresponse) {      if ($pastresponse eq $curresponse) {
Line 221  sub handle_previous { Line 297  sub handle_previous {
     if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {      if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
  if ($$previous{'last'}) {   if ($$previous{'last'}) {
     push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');      push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
  } else {      push(@Apache::inputtags::previous_version,$$previous{'version'});
    } elsif ($Apache::lonhomework::type ne 'survey') {
     push(@Apache::inputtags::previous,'PREVIOUSLY_USED');      push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
       push(@Apache::inputtags::previous_version,$$previous{'version'});
  }   }
  push(@Apache::inputtags::previous_version,$$previous{'version'});  
     }      }
 }  }
   
 sub view_or_modify {  sub view_or_modify {
     my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();      my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
     my $myself=0;      my $myself=0;
     if ( ($name eq $ENV{'user.name'}) && ($domain eq $ENV{'user.domain'}) ) {      if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
  $myself=1;   $myself=1;
     }      }
     my $vgr=&Apache::lonnet::allowed('vgr',$courseid);      my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
Line 262  sub end_dataresponse { Line 339  sub end_dataresponse {
     my $result;      my $result;
     if ( $target eq 'web' ) {      if ( $target eq 'web' ) {
     } elsif ($target eq 'grade' ) {      } elsif ($target eq 'grade' ) {
  if ( defined $ENV{'form.submitted'}) {   if ( defined $env{'form.submitted'}) {
     my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();      my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
     my $allowed=&Apache::lonnet::allowed('mgr',$courseid);      my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
     if ($allowed) {      if ($allowed) {
  &Apache::response::setup_params('dataresponse');   &Apache::response::setup_params('dataresponse',$safeeval);
  my $partid = $Apache::inputtags::part;   my $partid = $Apache::inputtags::part;
  my $id = $Apache::inputtags::response['-1'];   my $id = $Apache::inputtags::response['-1'];
  my $response = $ENV{'form.HWVAL_'.$id};   my $response = $env{'form.HWVAL_'.$id};
  my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);   my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
  if ( $response =~ /[^\s]/) {   if ( $response =~ /[^\s]/) {
     $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;      $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
Line 337  sub start_responseparam { Line 414  sub start_responseparam {
      $safeeval,'name','type',       $safeeval,'name','type',
      'description','default');       'description','default');
  my $element=&Apache::edit::html_element_name('parameter_package');   my $element=&Apache::edit::html_element_name('parameter_package');
  if (defined($ENV{"form.$element"}) && $ENV{"form.$element"} ne '') {   if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
     my $name=$ENV{"form.$element"};      my $name=$env{"form.$element"};
     my $tag=&decide_package($tagstack);      my $tag=&decide_package($tagstack);
     $token->[2]->{'name'}=$name;      $token->[2]->{'name'}=$name;
     $token->[2]->{'type'}=      $token->[2]->{'type'}=
Line 355  sub start_responseparam { Line 432  sub start_responseparam {
  }   }
     } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||      } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
      $target eq 'tex' || $target eq 'analyze' ) {       $target eq 'tex' || $target eq 'analyze' ) {
  if ($ENV{'request.state'} eq 'construct') {   if ($env{'request.state'} eq 'construct') {
     my $name   =&Apache::lonxml::get_param('name',$parstack,$safeeval);      my $name   =&Apache::lonxml::get_param('name',$parstack,$safeeval);
     my $default=&Apache::lonxml::get_param('default',$parstack,      my $default=&Apache::lonxml::get_param('default',$parstack,
      $safeeval);       $safeeval);
Line 372  sub end_responseparam { Line 449  sub end_responseparam {
 }  }
   
 sub start_parameter {  sub start_parameter {
     my $result = &start_responseparam(@_);      return &start_responseparam(@_);
     return $result;  
 }  }
   
 sub end_parameter {  sub end_parameter {
     my $result = &end_responseparam(@_);      return &end_responseparam(@_);
     return $result;  
 }  }
   
 sub reset_params {  sub reset_params {
Line 386  sub reset_params { Line 461  sub reset_params {
 }  }
   
 sub setup_params {  sub setup_params {
     my ($tag) = @_;      my ($tag,$safeeval) = @_;
   
     if ($ENV{'request.state'} eq 'construct') { return; }      if ($env{'request.state'} eq 'construct') { return; }
     my %paramlist=();      my %paramlist=();
     foreach my $key (keys(%Apache::lonnet::packagetab)) {      foreach my $key (keys(%Apache::lonnet::packagetab)) {
  if ($key =~ /^$tag/) {   if ($key =~ /^$tag/) {
Line 409  sub setup_params { Line 484  sub setup_params {
     &Apache::lonxml::debug("using nothing");      &Apache::lonxml::debug("using nothing");
     $Apache::inputtags::params{$key}='';      $Apache::inputtags::params{$key}='';
  } else {   } else {
     &Apache::lonxml::debug("using value");      my $string="{return qq\0".$value."\0}";
       my $newvalue=&Apache::run::run($string,$safeeval,1);
       if (defined($newvalue)) { $value=$newvalue; }
     $Apache::inputtags::params{$key}=$value;      $Apache::inputtags::params{$key}=$value;
  }   }
     }      }
Line 418  sub setup_params { Line 495  sub setup_params {
 sub answer_header {  sub answer_header {
     my ($type) = @_;      my ($type) = @_;
     my $result;      my $result;
     if ($ENV{'form.answer_output_mode'} eq 'tex') {      if ($env{'form.answer_output_mode'} eq 'tex') {
  $result = ' \vskip 0 mm \begin{tabular}{|c|}\hline Answer for Part: \verb|'.   $result = ' \vskip 0 mm \begin{tabular}{|c|}\hline Answer for Part: \verb|'.
                   $Apache::inputtags::part.'| \\\\ \hline ';                    $Apache::inputtags::part.'| \\\\ \hline ';
     } else {      } else {
Line 431  sub answer_header { Line 508  sub answer_header {
 sub answer_part {  sub answer_part {
     my ($type,$answer) = @_;      my ($type,$answer) = @_;
     my $result;      my $result;
     if ($ENV{'form.answer_output_mode'} eq 'tex') {      if ($env{'form.answer_output_mode'} eq 'tex') {
  $result = ' \verb|'.$answer.'|\\\\ \hline ';   my $to_use='|';
    foreach my $value (32..126) {
       my $char=pack('c',$value);
       if ($answer !~ /\Q$char\E/) {
    $to_use=$char;
    last;
       }
    }
    $result = '\verb'.$to_use.$answer.$to_use.'\\\\ \hline ';
     } else {      } else {
  $result = '<td>'.$answer.'</td>';   $result = '<td>'.$answer.'</td>';
     }      }
Line 442  sub answer_part { Line 527  sub answer_part {
 sub answer_footer {  sub answer_footer {
     my ($type) = @_;      my ($type) = @_;
     my $result;      my $result;
     if ($ENV{'form.answer_output_mode'} eq 'tex') {      if ($env{'form.answer_output_mode'} eq 'tex') {
  $result = ' \end{tabular} \vskip 0 mm ';   $result = ' \end{tabular} \vskip 0 mm ';
     } else {      } else {
  $result = '</tr></table>';   $result = '</tr></table>';
Line 451  sub answer_footer { Line 536  sub answer_footer {
 }  }
   
 sub showallfoils {  sub showallfoils {
     my $return=0;      if (defined($env{'form.showallfoils'})) {
     if (defined($ENV{'form.showallfoils'}) &&   my ($symb)=&Apache::lonxml::whichuser();
  $ENV{'request.state'} eq 'construct') {   if (($env{'request.state'} eq 'construct') || 
  $return=1;      ($env{'user.adv'} && $symb eq '')      ||
               ($Apache::lonhomework::viewgrades) ) {
       return 1;
    }
     }      }
     return $return;      if ($Apache::lonhomework::type eq 'survey') { return 1; }
       return 0;
 }  }
   
 sub getresponse {  sub getresponse {
     my ($temp)=@_;      my ($temp,$resulttype)=@_;
     my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];      my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
     my $response;      my $response;
     if (!defined($temp)) {      if (!defined($temp)) {
Line 472  sub getresponse { Line 561  sub getresponse {
     'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,      'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
     'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,      'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
     'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);      'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
     if ($ENV{'form.submitted'} eq 'scantron') {      if ($env{'form.submitted'} eq 'scantron') {
  my $part  = $Apache::inputtags::part;   my $part  = $Apache::inputtags::part;
  my $id    = $Apache::inputtags::response[-1];   my $id    = $Apache::inputtags::response[-1];
  $response = $ENV{'scantron.'.($Apache::lonxml::counter+$temp-1).   $response = $env{'scantron.'.($Apache::lonxml::counter+$temp-1).
  '.answer'};   '.answer'};
  # save bubbled letter for later   # save bubbled letter for later
  $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=   $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
     $response;      $response;
  $response = $let_to_num{$response};   if ($resulttype ne 'letter') {
       if ($resulttype eq 'A is 1') {
    $response = $let_to_num{$response}+1;
       } else {
    $response = $let_to_num{$response};
       }
    }
     } else {      } else {
  $response = $ENV{$formparm};   $response = $env{$formparm};
     }      }
     return $response;      return $response;
 }  }
Line 490  sub getresponse { Line 585  sub getresponse {
 sub repetition {  sub repetition {
     my $id = $Apache::inputtags::part;      my $id = $Apache::inputtags::part;
     my $weight = &Apache::lonnet::EXT("resource.$id.weight");      my $weight = &Apache::lonnet::EXT("resource.$id.weight");
     my $repetition = int $weight/9;      if (!defined($weight) || ($weight eq '')) { $weight=1; }
     if ($weight % 9 != 0) {$repetition++;}       my $repetition = int($weight/10);
       if ($weight % 10 != 0) { $repetition++; } 
     return $repetition;      return $repetition;
 }  }
   
Line 500  sub scored_response { Line 596  sub scored_response {
     my $repetition=&repetition();      my $repetition=&repetition();
     my $score=0;      my $score=0;
     for (my $i=0;$i<$repetition;$i++) {      for (my $i=0;$i<$repetition;$i++) {
    # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
  my $increase=&Apache::response::getresponse($i+1);   my $increase=&Apache::response::getresponse($i+1);
  if ($increase ne '') { $score+=$increase+1; }   if ($increase ne '') { $score+=$increase+1; }
     }      }
     my $weight = &Apache::lonnet::EXT("resource.$part.weight");      my $weight = &Apache::lonnet::EXT("resource.$part.weight");
       if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
     my $pcr=$score/$weight;      my $pcr=$score/$weight;
     $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;      $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=      $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
Line 559  sub whichorder { Line 657  sub whichorder {
     for (my $i=0;$i<=$#bottomlist;$i++) {      for (my $i=0;$i<=$#bottomlist;$i++) {
  if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }   if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
     }      }
   
     return @whichopt;      return @whichopt;
 }  }
   
Line 586  sub analyze_store_foilgroup { Line 683  sub analyze_store_foilgroup {
     push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });      push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
 }  }
   
   sub check_if_computed {
       my ($token,$parstack,$safeeval,$name)=@_;
       my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
       if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
    my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
    $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
       }
   }
   
 sub pick_foil_for_concept {  sub pick_foil_for_concept {
     my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;      my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
     if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }      if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
Line 621  sub pick_foil_for_concept { Line 727  sub pick_foil_for_concept {
   
 }  }
   
   sub get_response_param {
       my ($id,$name,$default)=@_;
       my $parameter;
       if ($env{'request.state'} eq 'construct' &&
    defined($Apache::inputtags::params{$name})) {
    $parameter=$Apache::inputtags::params{$name};
       } else {
    $parameter=&Apache::lonnet::EXT("resource.$id.$name");
       }
       if (!defined($parameter) || $parameter eq '') {
    $parameter = $default;
       }
       return $parameter;
   }
   
   sub submitted {
       my ($who)=@_;
       
       # when scatron grading any submission is a submission
       if ($env{'form.submitted'} eq 'scantron') { return 1; }
       # if the caller only cared if this was a scantron submission
       if ($who eq 'scantron') { return 0; }
       # if the Submit Answer button for this particular part was pressed
       my $partid=$Apache::inputtags::part;
       if (defined($env{'form.submit_'.$partid})) { return 1; }
       # Submit All button on a .page was pressed
       if (defined($env{'form.all_submit'})) { return 1; }
       # otherwise no submission occured
       return 0;
   }
   
   # basically undef and 0 (both false) mean that they still have work to do
   # and all true values mean that they can't do any more work
   #
   # a return of undef means it is unattempted
   # a return of 0 means it is attmpted and wrong but still has tries
   # a return of 1 means it is marked correct
   # a return of 2 means they have exceed maximum number of tries
   # a return of 3 means it after the answer date
   sub check_status {
       my ($id)=@_;
       if (!$id) { $id=$Apache::linputtags::part; }
       my $curtime=&Apache::lonnet::EXT('system.time');
       my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
       my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
       my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
       if ( $opendate && $curtime > $opendate &&
            $duedate && $curtime > $duedate &&
            $answerdate && $curtime > $answerdate) {
           return 3;
       }
       my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
       if ($status =~ /^correct/) { return 1; }
       if (!$status) { return undef; }
       my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
       if ($maxtries eq '') { $maxtries=2; }
       my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
       if ($curtries < $maxtries) { return 0; }
       return 2;
   }
   
 1;  1;
 __END__  __END__
Removed from v.1.87  
changed lines
  Added in v.1.127

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