1=pod 2 3=head1 NAME 4 5DBIx::Class::Schema::Loader::Manual::UpgradingFromV4 - Important Information 6Related to Upgrading from Version 0.04006 7 8=head1 What Changed 9 10=over 4 11 12=item * 13 14add_column 15 16The new Loader detects much more information about columns and sets flags like 17C<is_auto_increment> that it didn't set before. 18 19=item * 20 21RelBuilder 22 23The new RelBuilder will give you nicer accessor names for relationships, so you 24will no longer have conflicts between a foreign key column and the relationship 25accessor itself (if the FK is named C<_id>.) 26 27It will also more correctly infer the relationship type, e.g. some relationships 28that were previously detected as a C<has_many> will now be a C<might_have> 29(when it detects a unique constraint on the foreign key column.) 30 31=item * 32 33moniker_map 34 35Table names are now singularized when determining the C<Result> class names. So 36the table C<user_roles> would have become C<UserRoles> in C<0.04006> but now 37becomes C<UserRole> instead. 38 39=item * 40 41use_namespaces 42 43Now defaults to on. See L<DBIx::Class::Schema::Loader::Base/use_namespaces> and 44L<DBIx::Class::Schema/"load_namespaces">. 45 46=item * 47 48Support for more databases 49 50We now support Microsoft SQL Server and Sybase, and there are also many 51improvements to the other backends. 52 53=back 54 55=head1 Backward Compatibility 56 57In backward compatibility mode, the Loader will use the old relationship names 58and types, will not singularize monikers for tables, and C<use_namespaces> will 59be off. 60 61To control this behavior see L<DBIx::Class::Schema::Loader::Base/naming> and 62L<DBIx::Class::Schema::Loader::Base/use_namespaces>. 63 64=head2 Static Schemas 65 66When reading a C<Schema.pm> from a static schema generated with an C<0.04> 67version of Loader, backward compatibility mode will default to on, unless 68overridden with the C<naming> and/or C<use_namespaces> attributes. 69 70=head2 Dynamic Schemas 71 72Dynamic schemas will always by default use C<0.04006> mode and have 73C<use_namespaces> off. 74 75To upgrade a dynamic schema, set the C<naming> and C<use_namespaces> attributes 76(which is proxied to the loader) in your C<Schema.pm>: 77 78 __PACKAGE__->naming('current'); 79 __PACKAGE__->use_namespaces(1); 80 81=head1 AUTHOR 82 83See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. 84 85=head1 LICENSE 86 87This library is free software; you can redistribute it and/or modify it under 88the same terms as Perl itself. 89 90=cut 91