John Napiorkowski > DBIx-Class-Migration-0.038 > Catalyst::TraitFor::Model::DBIC::Schema::FromMigration

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NAME ^

Catalyst::TraitFor::Model::DBIC::Schema::FromMigration - Use your DB Sandbox to run Catalyst

SYNOPSIS ^

Use the trait in your Catalyst configuration:

    'Model::Schema' => {
      traits => ['FromMigration'],
      schema_class => 'MusicBase::Schema',
      extra_migration_args => {
        db_sandbox_class => 'DBIx::Class::Migration::MySQLSandbox'},
      install_if_needed => {
        on_install => sub {
          my ($schema, $migration) = @_;
          $migration->populate('all_tables')}},
      },

DESCRIPTION ^

If you are in development and using a database sandbox auto created and managed for you with DBIx::Class::Migration, this is a trait to make it easy to hook that sandbox up to your Catalyst application. The following are roughly the same:

    package MusicBase::Web::Model::Schema;

    use Moose;
    extends 'Catalyst::Model::DBIC::Schema';

    __PACKAGE__->config
    (
        schema_class => 'MusicBase::Schema',
        connect_info => {
          dsn => 'DBI:SQLite:__path_to(share,musicbase-schema.db)__',
          user => '',
          password => '',
        },
    )

    __PACKAGE__->meta->make_immutable;

And using the trait:

    package MusicBase::Web::Model::Schema;

    use Moose;
    extends 'Catalyst::Model::DBIC::Schema';

    __PACKAGE__->config
    (
        traits => ['FromMigration'],
        schema_class => 'MusicBase::Schema',
        extra_migration_args => \%args,
        install_if_needed => {
          default_fixture_sets => ['all_tables']},
    )

    __PACKAGE__->meta->make_immutable;

The biggest reasons to use this trait would be it makes it harder to connect the wrong database and it gives you some easy helpers for automatic database installation and fixture population (as you can see in the above example).

CONFIG PARAMETERS ^

This trait uses the following configuration parameters:

extra_migration_args

Accepts: Hashref, Optional

A hashref of init arguments that you'd pass to the new method of DBIx::Class::Migration. schema_class is inferred from the existing config parameter, so you don't need to pass that one. Other arguments of use could be db_sandbox_class.

    extra_migration_args => {
      db_sandbox_class => 'DBIx::Class::Migration::MySQLSandbox'},

For example would use a MySQL development sandbox instead of the default SQLite.

install_if_needed

Accepts Bool|HashRef, Optional

If this is a true value, run the "install_if_needed" in DBIx::Class::Migration method. If the value is a Hashref, we will assume it is a hashref of callbacks as documented, and use it as an argument (after de-reffing it).

METHODS ^

This role exposes the following public methods

migration

Returns the DBIx::Class::Migration object created to assist setting up and managing your database.

do_install_if_needed

Installs a database and possibly do some data population, if one does not yet exist.

SEE ALSO ^

Catalyst::Model::DBIC::Schema, Catalyst

AUTHOR ^

See DBIx::Class::Migration for author information

COPYRIGHT & LICENSE ^

See DBIx::Class::Migration for copyright and license information

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