--- loncom/interface/lonsyllabus.pm	2010/02/15 05:31:00	1.106.2.1
+++ loncom/interface/lonsyllabus.pm	2010/02/15 16:05:32	1.106.2.2
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Syllabus
 #
-# $Id: lonsyllabus.pm,v 1.106.2.1 2010/02/15 05:31:00 faziophi Exp $
+# $Id: lonsyllabus.pm,v 1.106.2.2 2010/02/15 16:05:32 faziophi Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -62,7 +62,7 @@ sub handler {
     my (undef,undef,$cdom,$cnum)=split(/\//,$r->uri);
 # ------------------------------------------------------------ Get query string
     &Apache::loncommon::get_unprocessed_cgi
-                        ($ENV{'QUERY_STRING'},['delete', 'field', 'forcestudent','register','forceedit','forceflush','wrapperdisplay']);
+                        ($ENV{'QUERY_STRING'},['delete', 'rename', 'field', 'forcestudent','register','forceedit','forceflush','wrapperdisplay']);
 # ----------------------------------------------------- Is this even a course?
     my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
     if ($homeserver eq 'no_host') {
@@ -189,12 +189,15 @@ ENDSCRIPT
     	&Apache::lonnet::del('syllabus', ['properties.v2_converted'], $cdom, $cnum);
     	delete $syllabus{'data.old_new_map'};
     	&Apache::lonnet::del('syllabus', ['data.old_new_map'], $cdom, $cnum);
+    	delete $syllabus{'data.deleted_fields'};
+    	&Apache::lonnet::del('syllabus', ['data.deleted_fields'], $cdom, $cnum);
 		%syllabus=&Apache::lonnet::dump('syllabus',$cdom,$cnum);  # load db
     	$r->print("Flushed syllabus DB file.<br />");
     	$r->print("Syllabus conflict: ".$syllabus{'properties.v2_conflict'}."<br />");
    	}
    	$r->print("Existing fields: ".$syllabus{'data.fields'}."<br />");
    	$r->print("Old-new map: ".$syllabus{'data.old_new_map'}."<br />");
+   	$r->print("Deleted fields: ".$syllabus{'data.deleted_fields'}."<br />");
     if (!exists($syllabus{'data.fields'})) {
     	# convert existing 2.x data to new DB fields
     	# which become new primary data source for document
@@ -241,7 +244,54 @@ ENDSCRIPT
 			#do not delete if file in v2 conversion mode
 			if (exists($data{'data.field.'.$field}) &&
 				!exists($data{'properties.v2_converted'})) {
-				$r->print("Field can be deleted.<br />");
+				$r->print("Field '$field' can be deleted.<br />");
+				# linearly parse "data.fields" and remove it
+				for (my $i = 0; $i < length(@fields); $i++) {
+					if ($fields[$i] eq $field) {
+						splice(@fields, $i, 1);
+						$r->print("Removed entry $i from 'data.fields'<br />");
+					}
+				}
+				# if "data.deleted" does not exist, create it
+				my @deleted;
+				if (!exists($data{'data.deleted_fields'})) {
+					@deleted = [];
+				} else {
+					@deleted = @{thaw($data{'data.deleted_fields'})};
+				}
+				# only if deleted does not exist in 'data.deleted', push it
+				my $push = 1;
+				for (my $i = 0; $i < length(@deleted); $i++) {
+					if ($deleted[$i] eq $field) {
+						$push = 0;
+						last;
+					}
+				}
+				unless (!$push) {
+					push(@deleted, $field);
+				}
+				$data{'data.fields'} = freeze(\@fields);
+				$data{'data.deleted_fields'} = freeze(\@deleted);
+				
+				&Apache::lonnet::put('syllabus',\%data,$cdom,$cnum);
+			}
+		}
+		if (($allowed) && ($env{'form.rename'})) {
+			my $field = $env{'form.rename'};
+			my $new_title = "Hello, World!";
+			chomp($field);
+			$field=~s/[^0-9_]//g;
+			#check if the field exists
+			#do not delete if file in v2 conversion mode
+			if (exists($data{'data.field.'.$field}) &&
+				!exists($data{'properties.v2_converted'})) {
+				#sanitize HTML content
+				$r->print("Rename -- field found.<br />");
+				my %db_entry = %{thaw($data{'data.field.'.$field})};
+				$new_title = &Apache::lonfeedback::clear_out_html($new_title, 1);
+				$db_entry{title} = $new_title;
+				$data{'data.field.'.$field} = freeze(\%db_entry);
+				&Apache::lonnet::put('syllabus',\%data,$cdom,$cnum);
 			}
 		}
         if (($allowed) && ($env{'form.storesyl'})) {
@@ -253,8 +303,7 @@ ENDSCRIPT
                 if (exists($data{'data.field.'.$syl_field})) {
                 	$r->print("Creating/updated field ".$syl_field."<br />");
                 	%field_hash = exists($data{'data.field.'.$syl_field}) ?
-                						%{thaw($data{'data.field.'.$syl_field})} :
-                						();
+                						%{thaw($data{'data.field.'.$syl_field})} : ();
                 	$type = exists($field_hash{type}) ? $field_hash{type} : TYPE_TEXT_HTML;
 					chomp($field);
 					$field=~s/\s+$//s;
@@ -590,7 +639,8 @@ sub print_template_new_fields {
 							$key, $default_rich_text);
 						&Apache::lontemplate::print_saveall_template($r);
 						if (!exists($data{'properties.v2_converted'})) {
-							$r->print("<a href='?delete=$key&forceedit=1'>Delete</a>");
+							$r->print("<a href='?delete=$key&forceedit=1'>Delete</a> ");
+							$r->print("<a href='?rename=$key&forceedit=1'>Rename to \"Hello, World!\"</a>");
 						}
 						$r->print("</div>");
 					}