--- loncom/homework/grades.pm	2001/08/20 23:27:27	1.15
+++ loncom/homework/grades.pm	2001/10/05 21:51:14	1.16
@@ -18,11 +18,16 @@ sub moreinfo {
   $request->print("Unable to process request: $reason");
   if ( $Apache::grades::viewgrades eq 'F' ) {
     $request->print('<form action="/adm/grades" method="post">'."\n");
-    $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'"></input>'."\n");
-    $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'"></input>'."\n");
-    $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'"></input>'."<br />\n");
-    $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'"></input>'."<br />\n");
-    $request->print('<input type="submit" name="submit" value="ReSubmit"></input>'."<br />\n");
+    if ($ENV{'form.url'}) {
+      $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");
+    }
+    if ($ENV{'form.symb'}) {
+      $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");
+    }
+    $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");
+    $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'" />'."<br />\n");
+    $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'" />'."<br />\n");
+    $request->print('<input type="submit" name="submit" value="ReSubmit" />'."<br />\n");
     $request->print('</form>');
   }
   return '';
@@ -48,11 +53,16 @@ sub listStudents {
       if ( $Apache::grades::viewgrades eq 'F' ) {
 	  $request->print('<form action="/adm/grades" method="post">'."\n");
 	  $request->print("$sname @nameparts\n");
-	  $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'"></input>'."\n");
-	  $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'"></input>'."\n");
-	  $request->print('<input type="hidden" name="student" value="'.$sname.'"></input>'."\n");
-	  $request->print('<input type="hidden" name="domain" value="'.$sdom.'"></input>'."\n");
-	  $request->print('<input type="submit" name="submit" value="View"></input>'."<br />\n");
+	  if ($ENV{'form.url'}) {
+	    $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");
+	  }
+	  if ($ENV{'form.symb'}) {
+	    $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");
+	  }
+	  $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");
+	  $request->print('<input type="hidden" name="student" value="'.$sname.'" />'."\n");
+	  $request->print('<input type="hidden" name="domain" value="'.$sdom.'" />'."\n");
+	  $request->print('<input type="submit" name="submit" value="View" />'."<br />\n");
 	  $request->print('</form>');
       }
   }
@@ -211,7 +221,12 @@ sub submission {
 #  if ($ENV{'form.student'} eq '') { &listStudents($request); return ''; }
   my ($uname,$udom) = &finduser($ENV{'form.student'});
   if ($uname eq '') { &moreinfo($request,"Unable to find student"); return ''; }
-  my $symb=&Apache::lonnet::symbread($url);
+  my $symb;
+  if ($ENV{'form.symb'}) {
+    $symb=$ENV{'form.symb'};
+  } else {
+    $symb=&Apache::lonnet::symbread($url);
+  }
   if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
   my $answer=&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
 						      $ENV{'request.course.id'});
@@ -245,8 +260,8 @@ sub viewgrades {
 
   #start the form
   $result = '<form action="/adm/grades" method="post">'."\n".
-    '<input type="hidden" name="symb" value="'.$symb.'"/>'."\n".
-      '<input type="hidden" name="url" value="'.$url.'"/>'."\n".
+    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
+      '<input type="hidden" name="url" value="'.$url.'" />'."\n".
 	'<input type="hidden" name="command" value="editgrades" />'."\n".
 	  '<input type="submit" name="submit" value="Submit Changes" />'."\n".
 	    '<table border=0><tr><td bgcolor="#999999">'."\n".
@@ -326,10 +341,15 @@ sub handler {
   }
   $request->send_http_header;
   return OK if $request->header_only;
+  &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
   my $url=$ENV{'form.url'};
   my $symb=$ENV{'form.symb'};
   my $command=$ENV{'form.command'};
-  
+  if (!$url) {
+    my ($temp1,$temp2);
+    ($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);
+    $url = $ENV{'form.url'};
+  }
   &send_header($request);
   if ($url eq '' && $symb eq '') {
      if ($ENV{'user.adv'}) {