Polls now use JSON instead of Storable to store graph info because Storable is not portable between OS/processors.

docs/changelog/7.x.x.txt

@@ -2,6 +2,7 @@
  - Data Forms set reply to to the same as the from field
  - Config file bugs fixed, see gotcha.txt for details.
  - Added export to context menu in asset manager
+ - Polls now use JSON instead of Storable to serialize graph config
 
 
 7.4.2

docs/gotcha.txt

@@ -13,6 +13,14 @@ save you many hours of grief.
  * You must upgrade to Config::JSON 1.1.0 or higher prior to upgrading.
     Due to a bug in CPAN you should type "force install Config::JSON" in
     order to upgrade to this version.
+ 
+ * For Poll Wobjects, we're using a new way to store the graph 
+    configuration. If you were having problems with your Poll graphs, 
+    you will need to re-create the graph's configuration. It may not
+    be possible to read your graph configuration, so if you have 
+    problems with the Poll graphs you will need to re-create the graph's
+    configuration. After you create a new configuration, everything will
+    work fine.
 
 
 7.4.0

docs/upgrades/upgrade_7.4.2-7.4.3.pl

@@ -21,6 +21,7 @@ my $quiet; # this line required
 my $session = start(); # this line required
 
 # upgrade functions go here
+reserializePollGraphConfigs($session);
 
 finish($session); # this line required
 
@@ -32,6 +33,41 @@ finish($session); # this line required
 #	# and here's our code
 #}
 
+#-------------------------------------------------
+sub reserializePollGraphConfigs {
+    my $session = shift;
+    print "\tRe-serializing Poll Graph configuration... " unless ($quiet);
+    
+    use Storable;
+    $Storable::canonical = 1;
+    use JSON;
+
+    my $sth = $session->db->read(
+        "SELECT assetId, revisionDate, graphConfiguration FROM Poll"
+    );
+
+    while (my %data = $sth->hash) {
+        next unless $data{graphConfiguration};
+        my ($assetId, $revisionDate, $graphConfiguration) 
+            = @data{'assetId', 'revisionDate', 'graphConfiguration'};
+
+        my $thawed  = eval { Storable::thaw($graphConfiguration) };
+        if ($@) {
+            print "\n\t!!! Could not fix graph configuration for assetId '$assetId' revisionDate '$revisionDate' !!!";
+            next;
+        }
+
+        $graphConfiguration = objToJson( $thawed );
+
+        $session->db->write(
+            "UPDATE Poll SET graphConfiguration=? WHERE assetId=? AND revisionDate=?",
+            [$graphConfiguration, $assetId, $revisionDate],
+        );
+    }
+    
+    print "OK!\n" unless $quiet;
+}
+
 
 
 # ---- DO NOT EDIT BELOW THIS LINE ----

lib/WebGUI/Asset/Wobject/Poll.pm

@@ -21,7 +21,7 @@ use WebGUI::Utility;
 use WebGUI::Asset::Wobject;
 use WebGUI::Image::Graph;
 use WebGUI::Storage::Image;
-use Storable;
+use JSON;
 
 our @ISA = qw(WebGUI::Asset::Wobject);
 
@@ -179,6 +179,23 @@ sub duplicate {
 	return $newAsset;
 }
 
+#----------------------------------------------------------------------------
+
+=head2 freezeGraphConfig 
+
+Serializes graph configuration. Returns a scalar containing the serialized
+structure.
+
+=cut
+
+sub freezeGraphConfig {
+    my $self        = shift;
+    my $obj         = shift;
+    
+    return JSON::objToJson($obj);
+}
+
+
 #-------------------------------------------------------------------
 sub getEditForm {
 	my $self = shift;
@@ -254,10 +271,7 @@ sub getEditForm {
 
 
 	if (WebGUI::Image::Graph->getPluginList($self->session)) {
-		my $config = {};
-		if ($self->get('graphConfiguration')) {
-			$config = Storable::thaw($self->get('graphConfiguration'));
-		}
+		my $config = $self->getGraphConfig;
 
 		$tabform->addTab('graph', 'Graphing');
 		$tabform->getTab('graph')->yesNo(
@@ -272,6 +286,23 @@ sub getEditForm {
 	return $tabform;
 }
 
+#----------------------------------------------------------------------------
+
+=head2 getGraphConfig
+
+Gets and thaws the graph configuration. Returns a reference to the original
+data structure.
+
+=cut
+
+sub getGraphConfig {
+    my $self    = shift;
+    my $config  = $self->get("graphConfiguration");
+
+    return unless $config;
+    return $self->thawGraphConfig($config);
+}
+
 #-------------------------------------------------------------------
 
 =head2 indexContent ( )
@@ -316,7 +347,7 @@ sub processPropertiesFromFormPost {
 
 	if (WebGUI::Image::Graph->getPluginList($self->session)) {
 		my $graph = WebGUI::Image::Graph->processConfigurationForm($self->session);
-		$property->{graphConfiguration} = Storable::freeze($graph->getConfiguration);
+		$self->setGraphConfig( $graph->getConfiguration );
 	}
 
 	$self->update($property);
@@ -331,6 +362,23 @@ sub purge {
 	$self->SUPER::purge();
 }	
 
+#----------------------------------------------------------------------------
+
+=head2 setGraphConfig
+
+Freezes and stores the configuration for the graphing of this poll. 
+
+=cut
+
+sub setGraphConfig {
+    my $self    = shift;
+    my $obj     = shift;
+
+    $self->update({
+        graphConfiguration  => $self->freezeGraphConfig($obj),
+    });
+}
+
 #-------------------------------------------------------------------
 sub setVote {
 	my $self = shift;
@@ -341,6 +389,21 @@ sub setVote {
 		".$self->session->db->quote($answer).", ".$self->session->db->quote($userId).", '$ip')");
 }
 
+#----------------------------------------------------------------------------
+
+=head2 thawGraphConfig 
+
+Deserializes the graph configuration and returns the data structure.
+
+=cut
+
+sub thawGraphConfig {
+    my $self        = shift;
+    my $string      = shift;
+    
+    return JSON::jsonToObj($string);
+}
+
 #-------------------------------------------------------------------
 sub view {
 	my $self = shift;
@@ -387,27 +450,23 @@ sub view {
 	$var{answer_loop} = \@answers;
 
 	if ($self->getValue('generateGraph')) {
-		my $config = {};
-		if ($self->get('graphConfiguration')) {
-			$config = Storable::thaw($self->get('graphConfiguration'));
+		my $config = $self->getGraphConfig;
+        if ($config) {
+            my $graph = WebGUI::Image::Graph->loadByConfiguration($self->session, $config);
+            $graph->addDataset(\@dataset);
+            $graph->setLabels(\@labels);
 
-			if ($config) {
-				my $graph = WebGUI::Image::Graph->loadByConfiguration($self->session, $config);
-				$graph->addDataset(\@dataset);
-				$graph->setLabels(\@labels);
+            $graph->draw;
 
-				$graph->draw;
+            my $storage = WebGUI::Storage::Image->createTemp($self->session);
+            my $filename = 'poll'.$self->session->id->generate.".png";
+            $graph->saveToStorageLocation($storage, $filename);
 
-				my $storage = WebGUI::Storage::Image->createTemp($self->session);
-				my $filename = 'poll'.$self->session->id->generate.".png";
-				$graph->saveToStorageLocation($storage, $filename);
-
-				$var{graphUrl} = $storage->getUrl($filename);
-				$var{hasImageGraph} = 1;
-			} else {
-				$self->session->errorHandler->error('The graph configuration hash of the Poll ('.$self->getUrl.') is corrupt.');
-			}
-		}
+            $var{graphUrl} = $storage->getUrl($filename);
+            $var{hasImageGraph} = 1;
+        } else {
+            $self->session->errorHandler->error('The graph configuration hash of the Poll ('.$self->getUrl.') is corrupt.');
+        }
 	}
 	
 	return $self->processTemplate(\%var,undef,$self->{_viewTemplate});