X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FDeploymentHandler.pm;h=e7ffec9ff1cd1c82c7a331d4ca3c2bf497d7897f;hb=91557c90ba0b3f313696c2f15dd8b56fb8358574;hp=093ea627a4f02ab14149a03c1ded637210fe2124;hpb=4a65f60b80222596f851950728f0a115f511481c;p=dbsrgits%2FDBIx-Class-DeploymentHandler.git

diff --git a/lib/DBIx/Class/DeploymentHandler.pm b/lib/DBIx/Class/DeploymentHandler.pm
index 093ea62..e7ffec9 100644
--- a/lib/DBIx/Class/DeploymentHandler.pm
+++ b/lib/DBIx/Class/DeploymentHandler.pm
@@ -1,5 +1,7 @@
 package DBIx::Class::DeploymentHandler;
 
+# ABSTRACT: Extensible DBIx::Class deployment
+
 use Moose;
 
 extends 'DBIx::Class::DeploymentHandler::Dad';
@@ -10,10 +12,157 @@ with 'DBIx::Class::DeploymentHandler::WithSqltDeployMethod',
      'DBIx::Class::DeploymentHandler::WithStandardVersionStorage';
 with 'DBIx::Class::DeploymentHandler::WithReasonableDefaults';
 
+sub prepare_version_storage_install {
+  my $self = shift;
+
+  $self->prepare_resultsource_install(
+    $self->version_storage->version_rs->result_source
+  );
+}
+
+sub install_version_storage {
+  my $self = shift;
+
+  $self->install_resultsource(
+    $self->version_storage->version_rs->result_source
+  );
+}
+
 __PACKAGE__->meta->make_immutable;
 
 1;
 
+#vim: ts=2 sw=2 expandtab
+
 __END__
 
-vim: ts=2 sw=2 expandtab
+=head1 SYNOPSIS
+
+ use aliased 'DBIx::Class::DeploymentHandler' => 'DH';
+ my $s = My::Schema->connect(...);
+
+ my $dh = DH->new({
+   schema => $s,
+   databases => 'SQLite',
+   sqltargs => { add_drop_table => 0 },
+ });
+
+ $dh->prepare_deploy;
+
+ $dh->install;
+
+or for upgrades:
+
+ use aliased 'DBIx::Class::DeploymentHandler' => 'DH';
+ my $s = My::Schema->connect(...);
+
+ my $dh = DH->new({
+   schema => $s,
+   databases => 'SQLite',
+   sqltargs => { add_drop_table => 0 },
+ });
+
+ $dh->prepare_upgrade(1, 2);
+
+ $dh->upgrade;
+
+=head1 DESCRIPTION
+
+C<DBIx::Class::DeploymentHandler> is, as it's name suggests, a tool for
+deploying and upgrading databases with L<DBIx::Class>.  It is designed to be
+much more flexible than L<DBIx::Class::Schema::Versioned>, hence the use of
+L<Moose> and lots of roles.
+
+C<DBIx::Class::DeploymentHandler> itself is just a recommended set of roles
+that we think will not only work well for everyone, but will also yeild the
+best overall mileage.  Each role it uses has it's own nuances and
+documentation, so I won't describe all of them here, but here are a few of the
+major benefits over how L<DBIx::Class::Schema::Versioned> worked (and
+L<DBIx::Class::DeploymentHandler::Deprecated> tries to maintain compatibility
+with):
+
+=over
+
+=item *
+
+Downgrades in addition to upgrades.
+
+=item *
+
+Multiple sql files files per upgrade/downgrade/install.
+
+=item *
+
+Perl scripts allowed for upgrade/downgrade/install.
+
+=item *
+
+Just one set of files needed for upgrade, unlike before where one might need
+to generate C<factorial(scalar @versions)>, which is just silly.
+
+=item *
+
+And much, much more!
+
+=back
+
+That's really just a taste of some of the differences.  Check out each role for
+all the details.
+
+=head1 WHERE IS ALL THE DOC?!
+
+C<DBIx::Class::DeploymentHandler> extends
+L<DBIx::Class::DeploymentHandler::Dad>, so that's probably the first place to
+look when you are trying to figure out how everything works.
+
+Next would be to look at all the roles that fill in the blanks that
+L<DBIx::Class::DeploymentHandler::Dad> expects to be filled.  They would be
+L<DBIx::Class::DeploymentHandler::WithSqltDeployMethod>,
+L<DBIx::Class::DeploymentHandler::WithMonotonicVersions>,
+L<DBIx::Class::DeploymentHandler::WithStandardVersionStorage>, and
+L<DBIx::Class::DeploymentHandler::WithReasonableDefaults>.
+
+=method prepare_version_storage_install
+
+ $dh->prepare_version_storage_install
+
+Creates the needed C<.sql> file to install the version storage and not the rest
+of the tables
+
+=method install_version_storage
+
+ $dh->install_version_storage
+
+Install the version storage and not the rest of the tables
+
+=head1 THIS SUCKS
+
+You started your project and weren't using C<DBIx::Class::DeploymentHandler>?
+Lucky for you I had you in mind when I wrote this doc.
+
+First off, you'll want to just install the version_storage:
+
+ my $s = My::Schema->connect(...);
+ my $dh = DBIx::Class::DeploymentHandler({ schema => $s });
+
+ $dh->prepare_version_storage_install;
+ $dh->install_version_storage;
+
+Then set your database version:
+
+ $dh->add_database_version({ version => $s->version });
+
+Now you should be able to use DBIx::Class::DeploymentHandler like normal!
+
+=head1 DONATIONS
+
+If you'd like to thank me for the work I've done on this module, don't give me
+a donation. I spend a lot of free time creating free software, but I do it
+because I love it.
+
+Instead, consider donating to someone who might actually need it.  Obviously
+you should do research when donating to a charity, so don't just take my word
+on this.  I like
+L<<a href="http://www.childrenssurvivalfund.org/">Children's Survival Fund</a>>,
+but there are a host of other charities that can do much more good than I will
+with your money.