1 package DBIx::Class::DeploymentHandler;
3 # ABSTRACT: Extensible DBIx::Class deployment
7 extends 'DBIx::Class::DeploymentHandler::Dad';
8 # a single with would be better, but we can't do that
9 # see: http://rt.cpan.org/Public/Bug/Display.html?id=46347
10 with 'DBIx::Class::DeploymentHandler::WithApplicatorDumple' => {
11 interface_role => 'DBIx::Class::DeploymentHandler::HandlesDeploy',
12 class_name => 'DBIx::Class::DeploymentHandler::DeployMethod::SQL::Translator',
13 delegate_name => 'deploy_method',
14 attributes_to_assume => [qw(schema schema_version)],
15 attributes_to_copy => [qw(
16 ignore_ddl databases script_directory sql_translator_args force_overwrite
19 'DBIx::Class::DeploymentHandler::WithApplicatorDumple' => {
20 interface_role => 'DBIx::Class::DeploymentHandler::HandlesVersioning',
21 class_name => 'DBIx::Class::DeploymentHandler::VersionHandler::Monotonic',
22 delegate_name => 'version_handler',
23 attributes_to_assume => [qw( database_version schema_version to_version )],
25 'DBIx::Class::DeploymentHandler::WithApplicatorDumple' => {
26 interface_role => 'DBIx::Class::DeploymentHandler::HandlesVersionStorage',
27 class_name => 'DBIx::Class::DeploymentHandler::VersionStorage::Standard',
28 delegate_name => 'version_storage',
29 attributes_to_assume => ['schema'],
31 with 'DBIx::Class::DeploymentHandler::WithReasonableDefaults';
33 sub prepare_version_storage_install {
36 $self->prepare_resultsource_install({
37 result_source => $self->version_storage->version_rs->result_source
41 sub install_version_storage {
44 my $version = (shift||{})->{version} || $self->schema_version;
46 $self->install_resultsource({
47 result_source => $self->version_storage->version_rs->result_source,
53 $_[0]->prepare_deploy;
54 $_[0]->prepare_version_storage_install;
57 # the following is just a hack so that ->version_storage
59 sub BUILD { $_[0]->version_storage }
60 __PACKAGE__->meta->make_immutable;
64 #vim: ts=2 sw=2 expandtab
70 use aliased 'DBIx::Class::DeploymentHandler' => 'DH';
71 my $s = My::Schema->connect(...);
75 databases => 'SQLite',
76 sql_translator_args => { add_drop_table => 0 },
85 use aliased 'DBIx::Class::DeploymentHandler' => 'DH';
86 my $s = My::Schema->connect(...);
90 databases => 'SQLite',
91 sql_translator_args => { add_drop_table => 0 },
94 $dh->prepare_upgrade(1, 2);
100 C<DBIx::Class::DeploymentHandler> is, as it's name suggests, a tool for
101 deploying and upgrading databases with L<DBIx::Class>. It is designed to be
102 much more flexible than L<DBIx::Class::Schema::Versioned>, hence the use of
103 L<Moose> and lots of roles.
105 C<DBIx::Class::DeploymentHandler> itself is just a recommended set of roles
106 that we think will not only work well for everyone, but will also yeild the
107 best overall mileage. Each role it uses has it's own nuances and
108 documentation, so I won't describe all of them here, but here are a few of the
109 major benefits over how L<DBIx::Class::Schema::Versioned> worked (and
110 L<DBIx::Class::DeploymentHandler::Deprecated> tries to maintain compatibility
117 Downgrades in addition to upgrades.
121 Multiple sql files files per upgrade/downgrade/install.
125 Perl scripts allowed for upgrade/downgrade/install.
129 Just one set of files needed for upgrade, unlike before where one might need
130 to generate C<factorial(scalar @versions)>, which is just silly.
138 That's really just a taste of some of the differences. Check out each role for
141 =head1 WHERE IS ALL THE DOC?!
143 C<DBIx::Class::DeploymentHandler> extends
144 L<DBIx::Class::DeploymentHandler::Dad>, so that's probably the first place to
145 look when you are trying to figure out how everything works.
147 Next would be to look at all the pieces that fill in the blanks that
148 L<DBIx::Class::DeploymentHandler::Dad> expects to be filled. They would be
149 L<DBIx::Class::DeploymentHandler::DeployMethod::SQL::Translator>,
150 L<DBIx::Class::DeploymentHandler::VersionHandler::Monotonic>,
151 L<DBIx::Class::DeploymentHandler::VersionStorage::Standard>, and
152 L<DBIx::Class::DeploymentHandler::WithReasonableDefaults>.
154 =method prepare_version_storage_install
156 $dh->prepare_version_storage_install
158 Creates the needed C<.sql> file to install the version storage and not the rest
161 =method prepare_install
165 First prepare all the tables to be installed and the prepare just the version
168 =method install_version_storage
170 $dh->install_version_storage
172 Install the version storage and not the rest of the tables
176 You started your project and weren't using C<DBIx::Class::DeploymentHandler>?
177 Lucky for you I had you in mind when I wrote this doc.
179 First off, you'll want to just install the C<version_storage>:
181 my $s = My::Schema->connect(...);
182 my $dh = DBIx::Class::DeploymentHandler->({ schema => $s });
184 $dh->prepare_version_storage_install;
185 $dh->install_version_storage;
187 Then set your database version:
189 $dh->add_database_version({ version => $s->version });
191 Now you should be able to use C<DBIx::Class::DeploymentHandler> like normal!
195 This is a complex tool, and because of that sometimes you'll want to see
196 what exactly is happening. The best way to do that is to use the built in
197 logging functionality. It the standard six log levels; C<fatal>, C<error>,
198 C<warn>, C<info>, C<debug>, and C<trace>. Most of those are pretty self
199 explanatory. Generally a safe level to see what all is going on is debug,
200 which will give you everything except for the exact SQL being run.
202 To enable the various logging levels all you need to do is set an environment
203 variables: C<DBICDH_FATAL>, C<DBICDH_ERROR>, C<DBICDH_WARN>, C<DBICDH_INFO>,
204 C<DBICDH_DEBUG>, and C<DBICDH_TRACE>. Each level can be set on it's own,
205 but the default is the first three on and the last three off, and the levels
206 cascade, so if you turn on trace the rest will turn on automatically.
210 If you'd like to thank me for the work I've done on this module, don't give me
211 a donation. I spend a lot of free time creating free software, but I do it
214 Instead, consider donating to someone who might actually need it. Obviously
215 you should do research when donating to a charity, so don't just take my word
216 on this. I like Children's Survival Fund:
217 L<http://www.childrenssurvivalfund.org>, but there are a host of other
218 charities that can do much more good than I will with your money.