--- loncom/interface/lonparmset.pm	2003/11/21 18:18:04	1.138
+++ loncom/interface/lonparmset.pm	2003/12/12 19:41:11	1.139.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set parameters for assessments
 #
-# $Id: lonparmset.pm,v 1.138 2003/11/21 18:18:04 albertel Exp $
+# $Id: lonparmset.pm,v 1.139.2.2 2003/12/12 19:41:11 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -131,12 +131,12 @@ sub parmval {
 
 # -------------------------------------------------------- first, check default
 
-    if ($def) { $outpar[11]=$def; $result=11; }
+    if (defined($def)) { $outpar[11]=$def; $result=11; }
 
 # ----------------------------------------------------- second, check map parms
 
     my $thisparm=$parmhash{$symbparm};
-    if ($thisparm) { $outpar[10]=$thisparm; $result=10; }
+    if (defined($thisparm)) { $outpar[10]=$thisparm; $result=10; }
 
 # --------------------------------------------------------- third, check course
 
@@ -1614,10 +1614,12 @@ sub crsenv {
                              'default_enrollment_end_date',
                              );
 	foreach my $parameter (sort(keys(%values))) {
-	    if (! $descriptions{$parameter}) {
-                $descriptions{$parameter}=$parameter;
-                push(@Display_Order,$parameter);
-	    }
+            unless ($parameter =~ m/^internal\./) {
+                if (! $descriptions{$parameter}) {
+                    $descriptions{$parameter}=$parameter;
+                    push(@Display_Order,$parameter);
+                }
+            }
 	}
         foreach my $parameter (@Display_Order) {
             my $description = $descriptions{$parameter};
@@ -1757,8 +1759,25 @@ ENDOVER
 	}
     }
 # Store
-    &Apache::lonnet::del('resourcedata',\@deldata,$dom,$crs);
-    &Apache::lonnet::put('resourcedata',\%newdata,$dom,$crs);
+    my $delentries=$#deldata+1;
+    my @newdatakeys=keys %newdata;
+    my $putentries=$#newdatakeys+1;
+    if ($delentries) {
+	if (&Apache::lonnet::del('resourcedata',\@deldata,$dom,$crs) eq 'ok') {
+	    $r->print('<h2>'.&mt('Deleted [_1] parameter(s)</h2>',$delentries));
+	} else {
+	    $r->print('<h2><font color="red">'.
+		      &mt('Error deleting parameters').'</font></h2>');
+	}
+    }
+    if ($putentries) {
+	if (&Apache::lonnet::put('resourcedata',\%newdata,$dom,$crs) eq 'ok') {
+	    $r->print('<h2>'.&mt('Stored [_1] parameter(s)</h2>',$putentries));
+	} else {
+	    $r->print('<h2><font color="red">'.
+		      &mt('Error storing parameters').'</font></h2>');
+	}
+    }
 # Read and display
     my %resourcedata=&Apache::lonnet::dump('resourcedata',$dom,$crs);
     my $oldsection='';
@@ -1766,6 +1785,7 @@ ENDOVER
     my $oldpart='';
     my $pointer=0;
     $tableopen=0;
+    my $foundkeys=0;
     foreach my $thiskey (sort keys %resourcedata) {
 	if ($resourcedata{$thiskey.'.type'}) {
 	    my ($course,$middle,$part,$name)=
@@ -1803,6 +1823,7 @@ ENDOVER
 	    $r->print(&tablestart().'<tr><td><b>'.$name.
 		      ':</b></td><td><input type="checkbox" name="del_'.
 		      $thiskey.'" /></td><td>');
+	    $foundkeys++;
 	    if ($resourcedata{$thiskey.'.type'}=~/^date/) {
 		my $jskey='key_'.$pointer;
 		$pointer++;
@@ -1821,8 +1842,8 @@ ENDOVER
 	}
     }
     
-    $r->print(&tableend().
-	      '<p><input type="submit" value="'.&mt('Modify Parameters').'" /></p></form></body></html>');
+    $r->print(&tableend().'<p>'.
+	($foundkeys?'<input type="submit" value="'.&mt('Modify Parameters').'" />':&mt('There are no course or section parameters.')).'</p></form></body></html>');
 }
 
 ##################################################