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Diff for /loncom/homework/grades.pm between versions 1.528 and 1.529

version 1.528, 2008/07/14 10:28:19 version 1.529, 2008/11/11 16:40:47
Line 26 Line 26
 # http://www.lon-capa.org/  # http://www.lon-capa.org/
 #  #
   
   =head1 NAME
   
   Apache::grades
   
   =head1 SYNOPSIS
   
   Handles the viewing of grades.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 OVERVIEW
   
   Do an ssi with retries:
   While I'd love to factor out this with the vesrion in lonprintout,
   that would either require a data coupling between modules, which I refuse to perpetuate (there's quite enough of that already), or would require the invention of another infrastructure
   I'm not quite ready to invent (e.g. an ssi_with_retry object).
   
   At least the logic that drives this has been pulled out into loncommon.
   
   
   
   ssi_with_retries - Does the server side include of a resource.
                        if the ssi call returns an error we'll retry it up to
                        the number of times requested by the caller.
                        If we still have a proble, no text is appended to the
                        output and we set some global variables.
                        to indicate to the caller an SSI error occurred.  
                        All of this is supposed to deal with the issues described
                        in LonCAPA BZ 5631 see:
                        http://bugs.lon-capa.org/show_bug.cgi?id=5631
                        by informing the user that this happened.
   
   Parameters:
     resource   - The resource to include.  This is passed directly, without
                  interpretation to lonnet::ssi.
     form       - The form hash parameters that guide the interpretation of the resource
                  
     retries    - Number of retries allowed before giving up completely.
   Returns:
     On success, returns the rendered resource identified by the resource parameter.
   Side Effects:
     The following global variables can be set:
      ssi_error                - If an unrecoverable error occurred this becomes true.
                                 It is up to the caller to initialize this to false
                                 if desired.
      ssi_error_resource  - If an unrecoverable error occurred, this is the value
                                 of the resource that could not be rendered by the ssi
                                 call.
      ssi_error_message   - The error string fetched from the ssi response
                                 in the event of an error.
   
   
   =head1 HANDLER SUBROUTINE
   
   ssi_with_retries()
   
   =head1 OTHER SUBROUTINES
   
   =over
   
   =item *
   
   
   scantron_get_correction() : 
   
      Builds the interface screen to interact with the operator to fix a
      specific error condition in a specific scanline
   
    Arguments:
       $r           - Apache request object
       $i           - number of the current scanline
       $scan_record - hash ref as returned from &scantron_parse_scanline()
       $scan_config - hash ref as returned from &get_scantron_config()
       $line        - full contents of the current scanline
       $error       - error condition, valid values are
                      'incorrectCODE', 'duplicateCODE',
                      'doublebubble', 'missingbubble',
                      'duplicateID', 'incorrectID'
       $arg         - extra information needed
          For errors:
            - duplicateID   - paper number that this studentID was seen before on
            - duplicateCODE - array ref of the paper numbers this CODE was
                              seen on before
            - incorrectCODE - current incorrect CODE 
            - doublebubble  - array ref of the bubble lines that have double
                              bubble errors
            - missingbubble - array ref of the bubble lines that have missing
                              bubble errors
   
   =item *
   
   scantron_get_maxbubble() : 
   
      Returns the maximum number of bubble lines that are expected to
      occur. Does this by walking the selected sequence rendering the
      resource and then checking &Apache::lonxml::get_problem_counter()
      for what the current value of the problem counter is.
   
      Caches the results to $env{'form.scantron_maxbubble'},
      $env{'form.scantron.bubble_lines.n'}, 
      $env{'form.scantron.first_bubble_line.n'} and
      $env{"form.scantron.sub_bubblelines.n"}
      which are the total number of bubble, lines, the number of bubble
      lines for response n and number of the first bubble line for response n,
      and a comma separated list of numbers of bubble lines for sub-questions
      (for optionresponse, matchresponse, and rankresponse items), for response n.  
   
   
   =item *
   
   scantron_validate_missingbubbles() : 
   
      Validates all scanlines in the selected file to not have any
       answers that don't have bubbles that have not been verified
       to be bubble free.
   
   =item *
   
   scantron_process_students() : 
   
      Routine that does the actual grading of the bubble sheet information.
   
      The parsed scanline hash is added to %env 
   
      Then foreach unskipped scanline it does an &Apache::lonnet::ssi()
      foreach resource , with the form data of
   
    'submitted'     =>'scantron' 
    'grade_target'  =>'grade',
    'grade_username'=> username of student
    'grade_domain'  => domain of student
    'grade_courseid'=> of course
    'grade_symb'    => symb of resource to grade
   
       This triggers a grading pass. The problem grading code takes care
       of converting the bubbled letter information (now in %env) into a
       valid submission.
   
   =item *
   
   scantron_upload_scantron_data() :
   
       Creates the screen for adding a new bubble sheet data file to a course.
   
   =item *
   
   scantron_upload_scantron_data_save() : 
   
      Adds a provided bubble information data file to the course if user
      has the correct privileges to do so. 
   
   =item *
   
   valid_file() :
   
      Validates that the requested bubble data file exists in the course.
   
   =item *
   
   scantron_download_scantron_data() : 
   
      Shows a list of the three internal files (original, corrected,
      skipped) for a specific bubble sheet data file that exists in the
      course.
   
   =item *
   
   scantron_validate_ID() : 
   
      Validates all scanlines in the selected file to not have any
      invalid or underspecified student IDs
   
   =back
   
   =cut
   
 package Apache::grades;  package Apache::grades;
 use strict;  use strict;
 use Apache::style;  use Apache::style;
Line 58  my $ssi_error_resource; Line 235  my $ssi_error_resource;
 my $ssi_error_message;  my $ssi_error_message;
   
   
 #  Do an ssi with retries:  
 #  While I'd love to factor out this with the vesrion in lonprintout,  
 #  that would either require a data coupling between modules, which I refuse to perpetuate  
 #  (there's quite enough of that already), or would require the invention of another infrastructure  
 #  I'm not quite ready to invent (e.g. an ssi_with_retry object).  
 #  
 # At least the logic that drives this has been pulled out into loncommon.  
   
   
 #  
 #   ssi_with_retries - Does the server side include of a resource.  
 #                      if the ssi call returns an error we'll retry it up to  
 #                      the number of times requested by the caller.  
 #                      If we still have a proble, no text is appended to the  
 #                      output and we set some global variables.  
 #                      to indicate to the caller an SSI error occurred.    
 #                      All of this is supposed to deal with the issues described  
 #                      in LonCAPA BZ 5631 see:  
 #                      http://bugs.lon-capa.org/show_bug.cgi?id=5631  
 #                      by informing the user that this happened.  
 #  
 # Parameters:  
 #   resource   - The resource to include.  This is passed directly, without  
 #                interpretation to lonnet::ssi.  
 #   form       - The form hash parameters that guide the interpretation of the resource  
 #                  
 #   retries    - Number of retries allowed before giving up completely.  
 # Returns:  
 #   On success, returns the rendered resource identified by the resource parameter.  
 # Side Effects:  
 #   The following global variables can be set:  
 #    ssi_error                - If an unrecoverable error occurred this becomes true.  
 #                               It is up to the caller to initialize this to false  
 #                               if desired.  
 #    ssi_error_resource  - If an unrecoverable error occurred, this is the value  
 #                               of the resource that could not be rendered by the ssi  
 #                               call.  
 #    ssi_error_message   - The error string fetched from the ssi response  
 #                               in the event of an error.  
 #  
 sub ssi_with_retries {  sub ssi_with_retries {
     my ($resource, $retries, %form) = @_;      my ($resource, $retries, %form) = @_;
     my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);      my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
Line 6611  sub scantron_validate_sequence { Line 6748  sub scantron_validate_sequence {
     return (0,$currentphase+1);      return (0,$currentphase+1);
 }  }
   
 =pod  
   
 =item scantron_validate_ID  
   
    Validates all scanlines in the selected file to not have any  
    invalid or underspecified student IDs  
   
 =cut  
   
 sub scantron_validate_ID {  sub scantron_validate_ID {
     my ($r,$currentphase) = @_;      my ($r,$currentphase) = @_;
Line 6684  sub scantron_validate_ID { Line 6814  sub scantron_validate_ID {
     return (0,$currentphase+1);      return (0,$currentphase+1);
 }  }
   
 =pod  
   
 =item scantron_get_correction  
   
    Builds the interface screen to interact with the operator to fix a  
    specific error condition in a specific scanline  
   
  Arguments:  
     $r           - Apache request object  
     $i           - number of the current scanline  
     $scan_record - hash ref as returned from &scantron_parse_scanline()  
     $scan_config - hash ref as returned from &get_scantron_config()  
     $line        - full contents of the current scanline  
     $error       - error condition, valid values are  
                    'incorrectCODE', 'duplicateCODE',  
                    'doublebubble', 'missingbubble',  
                    'duplicateID', 'incorrectID'  
     $arg         - extra information needed  
        For errors:  
          - duplicateID   - paper number that this studentID was seen before on  
          - duplicateCODE - array ref of the paper numbers this CODE was  
                            seen on before  
          - incorrectCODE - current incorrect CODE   
          - doublebubble  - array ref of the bubble lines that have double  
                            bubble errors  
          - missingbubble - array ref of the bubble lines that have missing  
                            bubble errors  
   
 =cut  
   
 sub scantron_get_correction {  sub scantron_get_correction {
     my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;      my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;
Line 7283  sub scantron_validate_doublebubble { Line 7384  sub scantron_validate_doublebubble {
     return (0,$currentphase+1);      return (0,$currentphase+1);
 }  }
   
 =pod  
   
 =item scantron_get_maxbubble  
   
    Returns the maximum number of bubble lines that are expected to  
    occur. Does this by walking the selected sequence rendering the  
    resource and then checking &Apache::lonxml::get_problem_counter()  
    for what the current value of the problem counter is.  
   
    Caches the results to $env{'form.scantron_maxbubble'},  
    $env{'form.scantron.bubble_lines.n'},   
    $env{'form.scantron.first_bubble_line.n'} and  
    $env{"form.scantron.sub_bubblelines.n"}  
    which are the total number of bubble, lines, the number of bubble  
    lines for response n and number of the first bubble line for response n,  
    and a comma separated list of numbers of bubble lines for sub-questions  
    (for optionresponse, matchresponse, and rankresponse items), for response n.    
   
 =cut  
   
 sub scantron_get_maxbubble {  sub scantron_get_maxbubble {
     if (defined($env{'form.scantron_maxbubble'}) &&      if (defined($env{'form.scantron_maxbubble'}) &&
Line 7444  sub scantron_get_maxbubble { Line 7526  sub scantron_get_maxbubble {
     return $env{'form.scantron_maxbubble'};      return $env{'form.scantron_maxbubble'};
 }  }
   
 =pod  
   
 =item scantron_validate_missingbubbles  
   
    Validates all scanlines in the selected file to not have any  
     answers that don't have bubbles that have not been verified  
     to be bubble free.  
   
 =cut  
   
 sub scantron_validate_missingbubbles {  sub scantron_validate_missingbubbles {
     my ($r,$currentphase) = @_;      my ($r,$currentphase) = @_;
Line 7507  sub scantron_validate_missingbubbles { Line 7580  sub scantron_validate_missingbubbles {
     return (0,$currentphase+1);      return (0,$currentphase+1);
 }  }
   
 =pod  
   
 =item scantron_process_students  
   
    Routine that does the actual grading of the bubble sheet information.  
   
    The parsed scanline hash is added to %env   
   
    Then foreach unskipped scanline it does an &Apache::lonnet::ssi()  
    foreach resource , with the form data of  
   
  'submitted'     =>'scantron'   
  'grade_target'  =>'grade',  
  'grade_username'=> username of student  
  'grade_domain'  => domain of student  
  'grade_courseid'=> of course  
  'grade_symb'    => symb of resource to grade  
   
     This triggers a grading pass. The problem grading code takes care  
     of converting the bubbled letter information (now in %env) into a  
     valid submission.  
   
 =cut  
   
 sub scantron_process_students {  sub scantron_process_students {
     my ($r) = @_;      my ($r) = @_;
Line 7660  SCANTRONFORM Line 7710  SCANTRONFORM
     return '';      return '';
 }  }
   
 =pod  
   
 =item scantron_upload_scantron_data  
   
     Creates the screen for adding a new bubble sheet data file to a course.  
   
 =cut  
   
 sub scantron_upload_scantron_data {  sub scantron_upload_scantron_data {
     my ($r)=@_;      my ($r)=@_;
     $r->print(&Apache::loncommon::coursebrowser_javascript($env{'request.role.domain'}));      $r->print(&Apache::loncommon::coursebrowser_javascript($env{'request.role.domain'}));
Line 7708  sub scantron_upload_scantron_data { Line 7750  sub scantron_upload_scantron_data {
     return '';      return '';
 }  }
   
 =pod  
   
 =item scantron_upload_scantron_data_save  
   
    Adds a provided bubble information data file to the course if user  
    has the correct privileges to do so.    
   
 =cut  
   
 sub scantron_upload_scantron_data_save {  sub scantron_upload_scantron_data_save {
     my($r)=@_;      my($r)=@_;
Line 7777  sub scantron_upload_scantron_data_save { Line 7811  sub scantron_upload_scantron_data_save {
     return '';      return '';
 }  }
   
 =pod  
   
 =item valid_file  
   
    Validates that the requested bubble data file exists in the course.  
   
 =cut  
   
 sub valid_file {  sub valid_file {
     my ($requested_file)=@_;      my ($requested_file)=@_;
     foreach my $filename (sort(&scantron_filenames())) {      foreach my $filename (sort(&scantron_filenames())) {
Line 7793  sub valid_file { Line 7819  sub valid_file {
     return 0;      return 0;
 }  }
   
 =pod  
   
 =item scantron_download_scantron_data  
   
    Shows a list of the three internal files (original, corrected,  
    skipped) for a specific bubble sheet data file that exists in the  
    course.  
   
 =cut  
   
 sub scantron_download_scantron_data {  sub scantron_download_scantron_data {
     my ($r)=@_;      my ($r)=@_;
     my $default_form_data=&defaultFormData(&get_symb($r,1));      my $default_form_data=&defaultFormData(&get_symb($r,1));
Line 8107  sub checkscantron_results { Line 8123  sub checkscantron_results {
     return;      return;
 }  }
   
 =pod  
   
 =back  
   
 =cut  
   
 #-------- end of section for handling grading scantron forms -------  #-------- end of section for handling grading scantron forms -------
 #  #
Removed from v.1.528  
changed lines
  Added in v.1.529

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