X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=catagits%2FCatalyst-Runtime.git;a=blobdiff_plain;f=lib%2FCatalyst%2FIOC%2FContainer.pm;h=cb82f697f33ec7e45bfae1e95c63726cc00adefc;hp=8c8a1bd7dcced38250a93ca84c217ab7e43d872c;hb=1a5adaee236dda2152a9d0fb1ca27d08f3f92777;hpb=0811a16fad718aa0a683b3deaa318e7744a0a73d diff --git a/lib/Catalyst/IOC/Container.pm b/lib/Catalyst/IOC/Container.pm index 8c8a1bd..cb82f69 100644 --- a/lib/Catalyst/IOC/Container.pm +++ b/lib/Catalyst/IOC/Container.pm @@ -1,14 +1,17 @@ package Catalyst::IOC::Container; -use Bread::Board; +use Bread::Board qw/depends_on/; use Moose; use Config::Any; use Data::Visitor::Callback; use Catalyst::Utils (); +use List::Util qw(first); use Devel::InnerPackage (); use Hash::Util qw/lock_hash/; use MooseX::Types::LoadableClass qw/ LoadableClass /; use Moose::Util; +use Scalar::Util qw/refaddr/; use Catalyst::IOC::BlockInjection; +use Catalyst::IOC::ConstructorInjection; use Module::Pluggable::Object (); use namespace::autoclean; @@ -38,12 +41,6 @@ has substitutions => ( default => sub { +{} }, ); -has name => ( - is => 'ro', - isa => 'Str', - default => 'MyApp', -); - has sub_container_class => ( isa => LoadableClass, is => 'ro', @@ -63,7 +60,7 @@ sub BUILD { substitutions file driver - name + catalyst_application prefix extensions path @@ -73,30 +70,49 @@ sub BUILD { local_files global_config local_config + class_config config_local_suffix config_path + locate_components + home + root_dir /; + my $config = $self->resolve( service => 'config' ); + + # don't force default_component to be undef if the config wasn't set + my @default_view = $config->{default_view} + ? ( default_component => $config->{default_view} ) + : ( ) + ; + my @default_model = $config->{default_model} + ? ( default_component => $config->{default_model} ) + : ( ) + ; + $self->add_sub_container( - $self->build_controller_subcontainer + $self->build_component_subcontainer ); - # FIXME - the config should be merged at this point - my $config = $self->resolve( service => 'config' ); - my $default_view = $params->{default_view} || $config->{default_view}; - my $default_model = $params->{default_model} || $config->{default_model}; + $self->add_sub_container( + $self->build_controller_subcontainer + ); $self->add_sub_container( - $self->build_view_subcontainer( - default_component => $default_view, - ) + $self->build_view_subcontainer( @default_view ) ); $self->add_sub_container( - $self->build_model_subcontainer( - default_component => $default_model, - ) + $self->build_model_subcontainer( @default_model ) ); + + { + no strict 'refs'; + no warnings 'once'; + my $class = ref $self; + ${ $class . '::customise_container' }->($self) + if ${ $class . '::customise_container' }; + } } sub build_model_subcontainer { @@ -123,10 +139,60 @@ sub build_controller_subcontainer { ); } -sub build_name_service { +sub build_component_subcontainer { + my $self = shift; + + return Bread::Board::Container->new( + name => 'component', + ); +} + +sub build_home_service { + my $self = shift; + + return Bread::Board::BlockInjection->new( + lifecycle => 'Singleton', + name => 'home', + block => sub { + my $self = shift; + my $class = $self->param('catalyst_application'); + + if ( my $env = Catalyst::Utils::env_value( $class, 'HOME' ) ) { + return $env; + } + + if ( my $home = $self->param('home_flag') ) { + return $home; + } + + return Catalyst::Utils::home($class); + }, + parameters => { + home_flag => { is => 'ro', isa => 'Str|Undef', required => 0 } + }, + dependencies => [ depends_on('catalyst_application') ], + ); +} + +sub build_root_dir_service { my $self = shift; - return Bread::Board::Literal->new( name => 'name', value => $self->name ); + return Bread::Board::BlockInjection->new( + lifecycle => 'Singleton', + name => 'root_dir', + block => sub { + my $self = shift; + + return Path::Class::Dir->new( $self->param('home') )->subdir('root'); + }, + dependencies => [ depends_on('home') ], + ); +} + +sub build_catalyst_application_service { + my $self = shift; + + return Bread::Board::Literal->new( name => 'catalyst_application', value => $self->name ); } sub build_driver_service { @@ -166,9 +232,9 @@ sub build_prefix_service { lifecycle => 'Singleton', name => 'prefix', block => sub { - return Catalyst::Utils::appprefix( shift->param('name') ); + return Catalyst::Utils::appprefix( shift->param('catalyst_application') ); }, - dependencies => [ depends_on('name') ], + dependencies => [ depends_on('catalyst_application') ], ); } @@ -181,11 +247,11 @@ sub build_path_service { block => sub { my $s = shift; - return Catalyst::Utils::env_value( $s->param('name'), 'CONFIG' ) + return Catalyst::Utils::env_value( $s->param('catalyst_application'), 'CONFIG' ) || $s->param('file') - || $s->param('name')->path_to( $s->param('prefix') ); + || $s->param('catalyst_application')->path_to( $s->param('prefix') ); }, - dependencies => [ depends_on('file'), depends_on('name'), depends_on('prefix') ], + dependencies => [ depends_on('file'), depends_on('catalyst_application'), depends_on('prefix') ], ); } @@ -201,13 +267,13 @@ sub build_config_service { my $v = Data::Visitor::Callback->new( plain_value => sub { return unless defined $_; - return $self->_config_substitutions( $s->param('name'), $s->param('substitutions'), $_ ); + return $self->_config_substitutions( $s->param('catalyst_application'), $s->param('substitutions'), $_ ); } ); $v->visit( $s->param('raw_config') ); }, - dependencies => [ depends_on('name'), depends_on('raw_config'), depends_on('substitutions') ], + dependencies => [ depends_on('catalyst_application'), depends_on('raw_config'), depends_on('substitutions') ], ); } @@ -223,15 +289,17 @@ sub build_raw_config_service { my @global = @{$s->param('global_config')}; my @locals = @{$s->param('local_config')}; - my $config = {}; + my $config = $s->param('class_config'); + for my $cfg (@global, @locals) { for (keys %$cfg) { $config = Catalyst::Utils::merge_hashes( $config, $cfg->{$_} ); } } + return $config; }, - dependencies => [ depends_on('global_config'), depends_on('local_config') ], + dependencies => [ depends_on('global_config'), depends_on('local_config'), depends_on('class_config') ], ); } @@ -289,6 +357,26 @@ sub build_local_files_service { ); } +sub build_class_config_service { + my $self = shift; + + return Bread::Board::BlockInjection->new( + lifecycle => 'Singleton', + name => 'class_config', + block => sub { + my $s = shift; + my $app = $s->param('catalyst_application'); + + # Container might be called outside Catalyst context + return {} unless Class::MOP::is_class_loaded($app); + + # config might not have been defined + return $app->config || {}; + }, + dependencies => [ depends_on('catalyst_application') ], + ); +} + sub build_global_config_service { my $self = shift; @@ -362,14 +450,99 @@ sub build_config_local_suffix_service { name => 'config_local_suffix', block => sub { my $s = shift; - my $suffix = Catalyst::Utils::env_value( $s->param('name'), 'CONFIG_LOCAL_SUFFIX' ) || $self->config_local_suffix; + my $suffix = Catalyst::Utils::env_value( $s->param('catalyst_application'), 'CONFIG_LOCAL_SUFFIX' ) || $self->config_local_suffix; return $suffix; }, - dependencies => [ depends_on('name') ], + dependencies => [ depends_on('catalyst_application') ], ); } +sub build_locate_components_service { + my $self = shift; + + return Bread::Board::BlockInjection->new( + lifecycle => 'Singleton', + name => 'locate_components', + block => sub { + my $s = shift; + my $class = $s->param('catalyst_application'); + my $config = $s->param('config')->{ setup_components }; + + Catalyst::Exception->throw( + qq{You are using search_extra config option. That option is\n} . + qq{deprecated, please refer to the documentation for\n} . + qq{other ways of achieving the same results.\n} + ) if delete $config->{ search_extra }; + + my @paths = qw( ::Controller ::C ::Model ::M ::View ::V ); + + my $locator = Module::Pluggable::Object->new( + search_path => [ map { s/^(?=::)/$class/; $_; } @paths ], + %$config + ); + + return [ $locator->plugins ]; + }, + dependencies => [ depends_on('catalyst_application'), depends_on('config') ], + ); +} + +sub setup_components { + my $self = shift; + my $class = $self->resolve( service => 'catalyst_application' ); + my @comps = @{ $self->resolve( service => 'locate_components' ) }; + my %comps = map { $_ => 1 } @comps; + my $deprecatedcatalyst_component_names = 0; + + my $app_locate_components_addr = refaddr( + $class->can('locate_components') + ); + my $cat_locate_components_addr = refaddr( + Catalyst->can('locate_components') + ); + + if ($app_locate_components_addr != $cat_locate_components_addr) { + # FIXME - why not just say: @comps = $class->locate_components() ? + $class->log->warn(qq{You have overridden locate_components. That } . + qq{no longer works. Please refer to the documentation to achieve } . + qq{similar results.\n} + ); + } + + for my $component ( @comps ) { + + # We pass ignore_loaded here so that overlay files for (e.g.) + # Model::DBI::Schema sub-classes are loaded - if it's in @comps + # we know M::P::O found a file on disk so this is safe + + Catalyst::Utils::ensure_class_loaded( $component, { ignore_loaded => 1 } ); + } + + for my $component (@comps) { + $self->add_component( $component ); + # FIXME - $instance->expand_modules() is broken + my @expanded_components = $self->expand_component_module( $component ); + + if ( + !$deprecatedcatalyst_component_names && + ($deprecatedcatalyst_component_names = $component =~ m/::[CMV]::/) || + ($deprecatedcatalyst_component_names = grep { /::[CMV]::/ } @expanded_components) + ) { + # FIXME - should I be calling warn here? + # Maybe it's time to remove it, or become fatal + $class->log->warn(qq{Your application is using the deprecated ::[MVC]:: type naming scheme.\n}. + qq{Please switch your class names to ::Model::, ::View:: and ::Controller: as appropriate.\n} + ); + } + + for my $component (@expanded_components) { + $self->add_component( $component ) + unless $comps{$component}; + } + } +} + sub _fix_syntax { my $config = shift; my @components = ( @@ -448,12 +621,12 @@ sub get_component_from_sub_container { } sub find_component { - my ( $self, $component, $c, @args ) = @_; + my ( $self, $component, @args ) = @_; my ( $type, $name ) = _get_component_type_name($component); my @result; return $self->get_component_from_sub_container( - $type, $name, $c, @args + $type, $name, @args ) if $type; my $query = ref $component @@ -466,70 +639,53 @@ sub find_component { my @components = $subcontainer->get_service_list; @result = grep { m{$component} } @components; - return map { $subcontainer->get_component( $_, $c, @args ) } @result + return map { $subcontainer->get_component( $_, @args ) } @result if @result; } - # FIXME - I guess I shouldn't be calling $c->components here # one last search for things like $c->comp(qr/::M::/) - @result = $self->find_component_regexp( - $c->components, $component, $c, @args + @result = $self->_find_component_regexp( + $component, @args ) if !@result and ref $component; # it expects an empty list on failed searches return @result; } -sub find_component_regexp { - my ( $self, $components, $component, @args ) = @_; +sub _find_component_regexp { + my ( $self, $component, $ctx, @args ) = @_; my @result; - my @components = grep { m{$component} } keys %{ $components }; + my @components = grep { m{$component} } keys %{ $self->get_all_components($ctx) }; for (@components) { my ($type, $name) = _get_component_type_name($_); push @result, $self->get_component_from_sub_container( - $type, $name, @args + $type, $name, $ctx, @args ) if $type; } return @result; } -# FIXME sorry for the name again :) -sub get_components_types { - my ( $self ) = @_; - my @comps_types; - - for my $sub_container_name (qw/model view controller/) { - my $sub_container = $self->get_sub_container($sub_container_name); - for my $service ( $sub_container->get_service_list ) { - my $comp = $self->resolve(service => $service); - my $compname = ref $comp || $comp; - my $type = ref $comp ? 'instance' : 'class'; - push @comps_types, [ $compname, $type ]; - } - } - - return @comps_types; -} - sub get_all_components { - my $self = shift; + my ($self, $class) = @_; my %components; - my $containers = { - map { $_ => $self->get_sub_container($_) } qw(model view controller) - }; + # FIXME - if we're getting from these containers, we need to either: + # - pass 'ctx' and 'accept_context_args' OR + # - make these params optional + # big problem when setting up the dispatcher - this method is called + # as $container->get_all_components('MyApp'). What to do with Request + # life cycles? + foreach my $type (qw/model view controller /) { + my $container = $self->get_sub_container($type); - for my $container (keys %$containers) { - for my $component ($containers->{$container}->get_service_list) { - my $comp = $containers->{$container}->resolve( - service => $component - ); - my $comp_name = ref $comp || $comp; - $components{$comp_name} = $comp; + for my $component ($container->get_service_list) { + my $comp_service = $container->get_service($component); + + $components{$comp_service->catalyst_component_name} = $comp_service->get(ctx => $class); } } @@ -537,16 +693,52 @@ sub get_all_components { } sub add_component { - my ( $self, $component, $class ) = @_; + my ( $self, $component ) = @_; my ( $type, $name ) = _get_component_type_name($component); return unless $type; - $self->get_sub_container($type)->add_service( + # The 'component' sub-container will create the object, and store it's + # instance, which, by default, will live throughout the application. + # The model/view/controller sub-containers only reference the instance + # held in the aforementioned sub-container, and execute the ACCEPT_CONTEXT + # sub every time they are called, when it exists. + my $instance_container = $self->get_sub_container('component'); + my $accept_context_container = $self->get_sub_container($type); + + # Custom containers might have added the service already + # We don't want to override that + return if $accept_context_container->has_service( $name ); + + my $component_service_name = "${type}_${name}"; + + $instance_container->add_service( + Catalyst::IOC::ConstructorInjection->new( + name => $component_service_name, + catalyst_component_name => $component, + class => $component, + lifecycle => 'Singleton', + dependencies => [ + depends_on( '/catalyst_application' ), + ], + ), + ); + # XXX - FIXME - We have to explicitly build the service here, + # causing the COMPONENT method to be called early here, as otherwise + # if the component method defines other classes (e.g. the + # ACCEPT_CONTEXT injection Model::DBIC::Schema does) + # then they won't be found by Devel::InnerPackage + # see also t/aggregate/unit_core_component_loading.t + $instance_container->get_service($component_service_name)->get; + + $accept_context_container->add_service( Catalyst::IOC::BlockInjection->new( - lifecycle => 'Singleton', # FIXME? - name => $name, - block => sub { $self->setup_component( $component, $class ) }, + name => $name, + catalyst_component_name => $component, + dependencies => [ + depends_on( "/component/$component_service_name" ), + ], + block => sub { shift->param($component_service_name) }, ) ); } @@ -556,62 +748,16 @@ sub add_component { # or replaced by something already existing there? sub _get_component_type_name { my ( $component ) = @_; + my $result; - my @parts = split /::/, $component; - - while (my $type = shift @parts) { - return ('controller', join '::', @parts) - if $type =~ /^(c|controller)$/i; - - return ('model', join '::', @parts) - if $type =~ /^(m|model)$/i; - - return ('view', join '::', @parts) - if $type =~ /^(v|view)$/i; - } - - return (undef, $component); -} - -# FIXME ugly and temporary -# Just moved it here the way it was, so we can work on it here in the container -sub setup_component { - my ( $self, $component, $class ) = @_; - - unless ( $component->can( 'COMPONENT' ) ) { - return $component; - } - - # FIXME I know this isn't the "Dependency Injection" way of doing things, - # its just temporary - my $suffix = Catalyst::Utils::class2classsuffix( $component ); - my $config = $self->resolve(service => 'config')->{ $suffix } || {}; - - # Stash catalyst_component_name in the config here, so that custom COMPONENT - # methods also pass it. local to avoid pointlessly shitting in config - # for the debug screen, as $component is already the key name. - local $config->{catalyst_component_name} = $component; - - my $instance = eval { $component->COMPONENT( $class, $config ); }; - - if ( my $error = $@ ) { - chomp $error; - Catalyst::Exception->throw( - message => qq/Couldn't instantiate component "$component", "$error"/ - ); - } - elsif (!blessed $instance) { - my $metaclass = Moose::Util::find_meta($component); - my $method_meta = $metaclass->find_method_by_name('COMPONENT'); - my $component_method_from = $method_meta->associated_metaclass->name; - my $value = defined($instance) ? $instance : 'undef'; - Catalyst::Exception->throw( - message => - qq/Couldn't instantiate component "$component", COMPONENT() method (from $component_method_from) didn't return an object-like value (value was $value)./ - ); + while ( !$result and (my $index = index $component, '::') > 0 ) { + my $type = lc substr $component, 0, $index; + $component = substr $component, $index + 2; + $result = first { $type eq $_ or $type eq substr($_, 0, 1) } + qw{ model view controller }; } - return $instance; + return ($result, $component); } sub expand_component_module { @@ -619,73 +765,7 @@ sub expand_component_module { return Devel::InnerPackage::list_packages( $module ); } -sub locate_components { - my ( $self, $class, $config ) = @_; - - my @paths = qw( ::Controller ::C ::Model ::M ::View ::V ); - - my $locator = Module::Pluggable::Object->new( - search_path => [ map { s/^(?=::)/$class/; $_; } @paths ], - %$config - ); - - # XXX think about ditching this sort entirely - my @comps = sort { length $a <=> length $b } $locator->plugins; - - return @comps; -} - -sub setup_components { - my ( $self, $class ) = @_; - - # FIXME - should I get config as an argument, and throw the exception in - # Catalyst.pm? - my $config = $self->resolve(service => 'config')->{ setup_components }; - - Catalyst::Exception->throw( - qq{You are using search_extra config option. That option is\n} . - qq{deprecated, please refer to the documentation for\n} . - qq{other ways of achieving the same results.\n} - ) if delete $config->{ search_extra }; - - my @comps = $self->locate_components( $class, $config ); - my %comps = map { $_ => 1 } @comps; - my $deprecatedcatalyst_component_names = 0; - - for my $component ( @comps ) { - - # We pass ignore_loaded here so that overlay files for (e.g.) - # Model::DBI::Schema sub-classes are loaded - if it's in @comps - # we know M::P::O found a file on disk so this is safe - - Catalyst::Utils::ensure_class_loaded( $component, { ignore_loaded => 1 } ); - } - - for my $component (@comps) { - $self->add_component( $component, $class ); - # FIXME - $instance->expand_modules() is broken - my @expanded_components = $self->expand_component_module( $component ); - - if ( - !$deprecatedcatalyst_component_names && - ($deprecatedcatalyst_component_names = $component =~ m/::[CMV]::/) || - ($deprecatedcatalyst_component_names = grep { /::[CMV]::/ } @expanded_components) - ) { - # FIXME - should I be calling warn here? - $class->log->warn(qq{Your application is using the deprecated ::[MVC]:: type naming scheme.\n}. - qq{Please switch your class names to ::Model::, ::View:: and ::Controller: as appropriate.\n} - ); - } - - for my $component (@expanded_components) { - $self->add_component( $component, $class ) - unless $comps{$component}; - } - } - - $self->get_sub_container('model')->make_single_default; - $self->get_sub_container('view')->make_single_default; -} +__PACKAGE__->meta->make_immutable; 1; @@ -703,25 +783,45 @@ Catalyst::Container - IOC for Catalyst components =head1 METHODS -=head1 Containers +=head1 Methods for Building Containers + +=head2 build_component_subcontainer + +Container that stores all components, i.e. all models, views and controllers +together. Each service is an instance of the actual component, and by default +it lives while the application is running. Retrieving components from this +sub-container will instantiate the component, if it hasn't been instantiated +already, but will not execute ACCEPT_CONTEXT. =head2 build_model_subcontainer -Container that stores all models. +Container that stores references for all models that are inside the components +sub-container. Retrieving a model triggers ACCEPT_CONTEXT, if it exists. =head2 build_view_subcontainer -Container that stores all views. +Same as L, but for views. =head2 build_controller_subcontainer -Container that stores all controllers. +Same as L, but for controllers. + +=head1 Methods for Building Services -=head1 Services +=head2 build_catalyst_application_service -=head2 build_name_service +Name of the application (such as MyApp). -Name of the application. +=head2 build_home_service + +The application home directory. All the files (including classes, scripts, etc) +created for this application are in this directory, or in a sub-directory below +this one. + +=head2 build_root_dir_service + +Inside the application home (as explained in L), there is +a root directory. This is where all templates and static files are. =head2 build_driver_service @@ -733,28 +833,85 @@ Config options passed directly to the driver being used. =head2 build_substitutions_service -Executes all the substitutions in config. See L method. +This method substitutes macros found with calls to a function. There are a +number of default macros: + +=over + +=item * C<__HOME__> - replaced with C<$c-Epath_to('')> + +=item * C<__ENV(foo)__> - replaced with the value of C<$ENV{foo}> + +=item * C<__path_to(foo/bar)__> - replaced with C<$c-Epath_to('foo/bar')> + +=item * C<__literal(__FOO__)__> - leaves __FOO__ alone (allows you to use +C<__DATA__> as a config value, for example) + +=back + +The parameter list is split on comma (C<,>). You can override this method to +do your own string munging, or you can define your own macros in +C<< config( 'Plugin::ConfigLoader' => { substitutions => { ... } } ) >>. +Example: + + MyApp->config( 'Plugin::ConfigLoader' => { + substitutions => { + baz => sub { my $c = shift; qux( @_ ); }, + }, + }); + +The above will respond to C<__baz(x,y)__> in config strings. =head2 build_extensions_service +Config::Any's available config file extensions (e.g. xml, json, pl, etc). + =head2 build_prefix_service +The prefix, based on the application name, that will be used to look-up the +config files (which will be in the format $prefix.$extension). If the app is +MyApp::Foo, the prefix will be myapp_foo. + =head2 build_path_service +The path to the config file (or environment variable, if defined). + =head2 build_config_service +The resulting configuration for the application, after it has successfully +been loaded, and all substitutions have been made. + =head2 build_raw_config_service +The merge of local_config and global_config hashes, before substitutions. + =head2 build_global_files_service +Gets all files for config that don't have the local_suffix, such as myapp.conf. + =head2 build_local_files_service +Gets all files for config that have the local_suffix, such as myapp_local.conf. + =head2 build_global_config_service +Reads config from global_files. + =head2 build_local_config_service +Reads config from local_files. + +=head2 build_class_config_service + +Reads config set from the application's class attribute config, +i.e. MyApp->config( name => 'MyApp', ... ) + =head2 build_config_path_service +Splits the path to the config file, and returns on array ref containing +the path to the config file minus the extension in the first position, +and the extension in the second. + =head2 build_config_local_suffix_service Determines the suffix of files used to override the main config. By default @@ -776,73 +933,52 @@ For example, if C< $ENV{ MYAPP_CONFIG_LOCAL_SUFFIX }> is set to C, ConfigLoader will try and load C instead of C. -=head2 get_component_from_sub_container($sub_container, $name, $c, @args) - -Looks for components in a given subcontainer (such as controller, model or view), and returns the searched component. If $name is undef, it returns the default component (such as default_view, if $sub_container is 'view'). If $name is a regexp, it returns an array of matching components. Otherwise, it looks for the component with name $name. - -=head2 get_components_types - -=head2 get_all_components - -Fetches all the components, in each of the sub_containers model, view and controller, and returns a readonly hash. The keys are the class names, and the values are the blessed objects. This is what is returned by $c->components. - -=head2 add_component - -Adds a component to the appropriate subcontainer. The subcontainer is guessed by the component name given. - -=head2 find_component +=head2 build_locate_components_service -Searches for components in all containers. If $component is the full class name, the subcontainer is guessed, and it gets the searched component in there. Otherwise, it looks for a component with that name in all subcontainers. If $component is a regexp, it calls the method below, find_component_regexp, and matches all components against that regexp. - -=head2 find_component_regexp - -Finds components that match a given regexp. Used internally, by find_component. - -=head2 setup_component - -=head2 _fix_syntax - -=head2 _config_substitutions +This method is meant to provide a list of component modules that should be +setup for the application. By default, it will use L. -This method substitutes macros found with calls to a function. There are a -number of default macros: +Specify a C config option to pass additional options directly +to L. -=over +=head1 Other methods -=item * C<__HOME__> - replaced with C<$c-Epath_to('')> +=head2 get_component_from_sub_container($sub_container, $name, $c, @args) -=item * C<__ENV(foo)__> - replaced with the value of C<$ENV{foo}> +Looks for components in a given sub-container (such as controller, model or +view), and returns the searched component. If $name is undef, it returns the +default component (such as default_view, if $sub_container is 'view'). If +$name is a regexp, it returns an array of matching components. Otherwise, it +looks for the component with name $name. -=item * C<__path_to(foo/bar)__> - replaced with C<$c-Epath_to('foo/bar')> +=head2 get_all_components -=item * C<__literal(__FOO__)__> - leaves __FOO__ alone (allows you to use -C<__DATA__> as a config value, for example) +Fetches all the components, in each of the sub_containers model, view and +controller, and returns a read-only hash. The keys are the class names, and +the values are the blessed objects. This is what is returned by $c->components. -=back +=head2 add_component -The parameter list is split on comma (C<,>). You can override this method to -do your own string munging, or you can define your own macros in -Cconfig-E{ 'Plugin::ConfigLoader' }-E{ substitutions }>. -Example: +Adds a component to the appropriate sub-container. The sub-container is guessed +by the component name given. - MyApp->config->{ 'Plugin::ConfigLoader' }->{ substitutions } = { - baz => sub { my $c = shift; qux( @_ ); } - } +=head2 find_component -The above will respond to C<__baz(x,y)__> in config strings. +Searches for components in all containers. If $component is the full class +name, the sub-container is guessed, and it gets the searched component in there. +Otherwise, it looks for a component with that name in all sub-containers. If +$component is a regexp it calls _find_component_regexp and matches all +components against that regexp. -=head2 $c->expand_component_module( $component, $setup_component_config ) +=head2 expand_component_module Components found by C will be passed to this method, which is expected to return a list of component (package) names to be set up. -=head2 locate_components( $setup_component_config ) - -This method is meant to provide a list of component modules that should be -setup for the application. By default, it will use L. +=head2 setup_components -Specify a C config option to pass additional options directly -to L. +Uses locate_components service to list the components, and adds them to the +appropriate sub-containers, using add_component(). =head1 AUTHORS