+sub value_col {
+ my ($self) = @_;
+
+ my $type = $self->type;
+
+ return {
+ bool => 'bool_value',
+ timestamp => 'timestamp_value',
+ date => 'timestamp_value',
+ number => 'number_value',
+ integer => 'number_value',
+ customer => 'number_value',
+ vendor => 'number_value',
+ part => 'number_value',
+ htmlfield => 'text_value',
+ text => 'text_value',
+ textfield => 'text_value',
+ select => 'text_value'
+ }->{$type};
+}
+