use Catalyst::Middleware::Stash;
use Plack::Util;
use Class::Load 'load_class';
-use Encode 2.21 ();
+use Encode 2.21 'decode_utf8', 'encode_utf8';
BEGIN { require 5.008003; }
is => 'rw',
default => sub {
my $self = shift;
- $self->request_class->new($self->_build_request_constructor_args);
+ my $class = ref $self;
+ my $composed_request_class = $class->composed_request_class;
+ return $composed_request_class->new( $self->_build_request_constructor_args);
},
lazy => 1,
);
\%p;
}
+sub composed_request_class {
+ my $class = shift;
+ my @traits = (@{$class->request_class_traits||[]}, @{$class->config->{request_class_traits}||[]});
+
+ # For each trait listed, figure out what the namespace is. First we try the $trait
+ # as it is in the config. Then try $MyApp::TraitFor::Request:$trait. Last we try
+ # Catalyst::TraitFor::Request::$trait. If none load, throw error.
+
+ my $trait_ns = 'TraitFor::Request';
+ my @normalized_traits = map {
+ Class::Load::load_first_existing_class($_, $class.'::'.$trait_ns.'::'. $_, 'Catalyst::'.$trait_ns.'::'.$_)
+ } @traits;
+
+ return $class->_composed_request_class ||
+ $class->_composed_request_class(Moose::Util::with_traits($class->request_class, @normalized_traits));
+}
+
has response => (
is => 'rw',
default => sub {
my $self = shift;
- $self->response_class->new($self->_build_response_constructor_args);
+ my $class = ref $self;
+ my $composed_response_class = $class->composed_response_class;
+ return $composed_response_class->new( $self->_build_response_constructor_args);
},
lazy => 1,
);
sub _build_response_constructor_args {
- my $self = shift;
- { _log => $self->log };
+ return +{
+ _log => $_[0]->log,
+ encoding => $_[0]->encoding,
+ };
+}
+
+sub composed_response_class {
+ my $class = shift;
+ my @traits = (@{$class->response_class_traits||[]}, @{$class->config->{response_class_traits}||[]});
+
+ my $trait_ns = 'TraitFor::Response';
+ my @normalized_traits = map {
+ Class::Load::load_first_existing_class($_, $class.'::'.$trait_ns.'::'. $_, 'Catalyst::'.$trait_ns.'::'.$_)
+ } @traits;
+
+ return $class->_composed_response_class ||
+ $class->_composed_response_class(Moose::Util::with_traits($class->response_class, @normalized_traits));
}
has namespace => (is => 'rw');
our $DETACH = Catalyst::Exception::Detach->new;
our $GO = Catalyst::Exception::Go->new;
-#I imagine that very few of these really need to be class variables. if any.
+#I imagine that very few of these really
+#need to be class variables. if any.
#maybe we should just make them attributes with a default?
__PACKAGE__->mk_classdata($_)
for qw/components arguments dispatcher engine log dispatcher_class
engine_loader context_class request_class response_class stats_class
setup_finished _psgi_app loading_psgi_file run_options _psgi_middleware
- _data_handlers _encoding _encode_check/;
+ _data_handlers _encoding _encode_check finalized_default_middleware
+ request_class_traits response_class_traits stats_class_traits
+ _composed_request_class _composed_response_class _composed_stats_class/;
__PACKAGE__->dispatcher_class('Catalyst::Dispatcher');
__PACKAGE__->request_class('Catalyst::Request');
__PACKAGE__->response_class('Catalyst::Response');
__PACKAGE__->stats_class('Catalyst::Stats');
+
+sub composed_stats_class {
+ my $class = shift;
+ my @traits = (@{$class->stats_class_traits||[]}, @{$class->config->{stats_class_traits}||[]});
+
+ my $trait_ns = 'TraitFor::Stats';
+ my @normalized_traits = map {
+ Class::Load::load_first_existing_class($_, $class.'::'.$trait_ns.'::'. $_, 'Catalyst::'.$trait_ns.'::'.$_)
+ } @traits;
+
+ return $class->_composed_stats_class ||
+ $class->_composed_stats_class(Moose::Util::with_traits($class->stats_class, @normalized_traits));
+}
+
__PACKAGE__->_encode_check(Encode::FB_CROAK | Encode::LEAVE_SRC);
# Remember to update this in Catalyst::Runtime as well!
-our $VERSION = '5.90079';
+our $VERSION = '5.90103';
+$VERSION = eval $VERSION if $VERSION =~ /_/; # numify for warning-free dev releases
sub import {
my ( $class, @arguments ) = @_;
Catalyst - The Elegant MVC Web Application Framework
+=for html
+<a href="https://badge.fury.io/pl/Catalyst-Runtime"><img src="https://badge.fury.io/pl/Catalyst-Runtime.svg" alt="CPAN version" height="18"></a>
+<a href="https://travis-ci.org/perl-catalyst/catalyst-runtime/"><img src="https://api.travis-ci.org/perl-catalyst/catalyst-runtime.png" alt="Catalyst></a>
+<a href="http://cpants.cpanauthors.org/dist/Catalyst-Runtime"><img src="http://cpants.cpanauthors.org/dist/Catalyst-Runtime.png" alt='Kwalitee Score' /></a>
+
=head1 SYNOPSIS
See the L<Catalyst::Manual> distribution for comprehensive
# stash is automatically passed to the view for use in a template
$c->forward( 'MyApp::View::TT' );
+The stash hash is currently stored in the PSGI C<$env> and is managed by
+L<Catalyst::Middleware::Stash>. Since it's part of the C<$env> items in
+the stash can be accessed in sub applications mounted under your main
+L<Catalyst> application. For example if you delegate the response of an
+action to another L<Catalyst> application, that sub application will have
+access to all the stash keys of the main one, and if can of course add
+more keys of its own. However those new keys will not 'bubble' back up
+to the main application.
+
+For more information the best thing to do is to review the test case:
+t/middleware-stash.t in the distribution /t directory.
+
=cut
sub stash {
my $c = shift;
+ $c->log->error("You are requesting the stash but you don't have a context") unless blessed $c;
return Catalyst::Middleware::Stash::get_stash($c->req->env)->(@_);
}
return $c->{error} || [];
}
-
=head2 $c->state
Contains the return value of the last executed action.
Note that << $c->state >> operates in a scalar context which means that all
values it returns are scalar.
+Please note that if an action throws an exception, the value of state
+should no longer be considered the return if the last action. It is generally
+going to be 0, which indicates an error state. Examine $c->error for error
+details.
+
=head2 $c->clear_errors
Clear errors. You probably don't want to clear the errors unless you are
=head2 $c->last_error
Returns the most recent error in the stack (the one most recently added...)
-or nothing if there are no errors.
+or nothing if there are no errors. This does not modify the contents of the
+error stack.
=cut
-sub last_error { my ($err, @errs) = @{shift->error}; return $err }
+sub last_error {
+ my (@errs) = @{shift->error};
+ return scalar(@errs) ? $errs[-1]: undef;
+}
=head2 shift_errors
-shifts the most recently added error off the error stack and returns if. Returns
-nothing if there are nomore errors.
+shifts the most recently added error off the error stack and returns it. Returns
+nothing if there are no more errors.
=cut
sub shift_errors {
my ($self) = @_;
- my ($err, @errors) = @{$self->error};
+ my @errors = @{$self->error};
+ my $err = shift(@errors);
+ $self->{error} = \@errors;
+ return $err;
+}
+
+=head2 pop_errors
+
+pops the most recently added error off the error stack and returns it. Returns
+nothing if there are no more errors.
+
+=cut
+
+sub pop_errors {
+ my ($self) = @_;
+ my @errors = @{$self->error};
+ my $err = pop(@errors);
$self->{error} = \@errors;
return $err;
}
}
# Filter a component before returning by calling ACCEPT_CONTEXT if available
+
sub _filter_component {
my ( $c, $comp, @args ) = @_;
+ if(ref $comp eq 'CODE') {
+ $comp = $comp->();
+ }
+
if ( eval { $comp->can('ACCEPT_CONTEXT'); } ) {
- return $comp->ACCEPT_CONTEXT( $c, @args );
+ return $comp->ACCEPT_CONTEXT( $c, @args );
}
+ $c->log->warn("You called component '${\$comp->catalyst_component_name}' with arguments [@args], but this component does not ACCEPT_CONTEXT, so args are ignored.") if scalar(@args) && $c->debug;
+
return $comp;
}
my $comps = $c->components;
my $check = $appclass."::Controller::".$name;
return $c->_filter_component( $comps->{$check}, @args ) if exists $comps->{$check};
+ foreach my $path (@{$appclass->config->{ setup_components }->{ search_extra }}) {
+ next unless $path =~ /.*::Controller/;
+ $check = $path."::".$name;
+ return $c->_filter_component( $comps->{$check}, @args ) if exists $comps->{$check};
+ }
}
my @result = $c->_comp_search_prefixes( $name, qw/Controller C/ );
return map { $c->_filter_component( $_, @args ) } @result if ref $name;
$c->model('Foo')->do_stuff;
-Any extra arguments are directly passed to ACCEPT_CONTEXT.
+Any extra arguments are directly passed to ACCEPT_CONTEXT, if the model
+defines ACCEPT_CONTEXT. If it does not, the args are discarded.
If the name is omitted, it will look for
- a model object in $c->stash->{current_model_instance}, then
my $comps = $c->components;
my $check = $appclass."::Model::".$name;
return $c->_filter_component( $comps->{$check}, @args ) if exists $comps->{$check};
+ foreach my $path (@{$appclass->config->{ setup_components }->{ search_extra }}) {
+ next unless $path =~ /.*::Model/;
+ $check = $path."::".$name;
+ return $c->_filter_component( $comps->{$check}, @args ) if exists $comps->{$check};
+ }
}
my @result = $c->_comp_search_prefixes( $name, qw/Model M/ );
return map { $c->_filter_component( $_, @args ) } @result if ref $name;
else {
$c->log->warn( "Attempted to use view '$check', but does not exist" );
}
+ foreach my $path (@{$appclass->config->{ setup_components }->{ search_extra }}) {
+ next unless $path =~ /.*::View/;
+ $check = $path."::".$name;
+ return $c->_filter_component( $comps->{$check}, @args ) if exists $comps->{$check};
+ }
}
my @result = $c->_comp_search_prefixes( $name, qw/View V/ );
return map { $c->_filter_component( $_, @args ) } @result if ref $name;
Your log class should implement the methods described in
L<Catalyst::Log>.
+=head2 has_encoding
+
+Returned True if there's a valid encoding
+
+=head2 clear_encoding
+
+Clears the encoding for the current context
+
=head2 encoding
-Sets or gets the application encoding.
+Sets or gets the application encoding. Setting encoding takes either an
+Encoding object or a string that we try to resolve via L<Encode::find_encoding>.
+
+You would expect to get the encoding object back if you attempt to set it. If
+there is a failure you will get undef returned and an error message in the log.
=cut
+sub has_encoding { shift->encoding ? 1:0 }
+
+sub clear_encoding {
+ my $c = shift;
+ if(blessed $c) {
+ $c->encoding(undef);
+ } else {
+ $c->log->error("You can't clear encoding on the application");
+ }
+}
+
sub encoding {
my $c = shift;
my $encoding;
if ( scalar @_ ) {
+
+ # Don't let one change this once we are too far into the response
+ if(blessed $c && $c->res->finalized_headers) {
+ Carp::croak("You may not change the encoding once the headers are finalized");
+ return;
+ }
+
# Let it be set to undef
if (my $wanted = shift) {
$encoding = Encode::find_encoding($wanted)
B<Note:> You B<should not> wrap this method with method modifiers
or bad things will happen - wrap the C<setup_finalize> method instead.
+B<Note:> You can create a custom setup stage that will execute when the
+application is starting. Use this to customize setup.
+
+ MyApp->setup(-Custom=value);
+
+ sub setup_custom {
+ my ($class, $value) = @_;
+ }
+
+Can be handy if you want to hook into the setup phase.
+
=cut
sub setup {
: $class->log->debug(q/Couldn't find home/);
my $column_width = Catalyst::Utils::term_width() - 8 - 9;
+
my $t = Text::SimpleTable->new( [ $column_width, 'Class' ], [ 8, 'Type' ] );
for my $comp ( sort keys %{ $class->components } ) {
my $type = ref $class->components->{$comp} ? 'instance' : 'class';
$class->setup_finished(1);
}
-=head2 $c->uri_for( $path?, @args?, \%query_values? )
+=head2 $c->uri_for( $path?, @args?, \%query_values?, \$fragment? )
-=head2 $c->uri_for( $action, \@captures?, @args?, \%query_values? )
+=head2 $c->uri_for( $action, \@captures?, @args?, \%query_values?, \$fragment? )
+
+=head2 $c->uri_for( $action, [@captures, @args], \%query_values?, \$fragment? )
Constructs an absolute L<URI> object based on the application root, the
provided path, and the additional arguments and query parameters provided.
C<< $c->request->base >>; any C<@args> are appended as additional path
components; and any C<%query_values> are appended as C<?foo=bar> parameters.
+B<NOTE> If you are using this 'stringy' first argument, we skip encoding and
+allow you to declare something like:
+
+ $c->uri_for('/foo/bar#baz')
+
+Where 'baz' is a URI fragment. We consider this first argument string to be
+'expert' mode where you are expected to create a valid URL and we for the most
+part just pass it through without a lot of internal effort to escape and encode.
+
If the first argument is a L<Catalyst::Action> it represents an action which
will have its path resolved using C<< $c->dispatcher->uri_for_action >>. The
optional C<\@captures> argument (an arrayref) allows passing the captured
# Path to a static resource
$c->uri_for('/static/images/logo.png');
+In general the scheme of the generated URI object will follow the incoming request
+however if your targeted action or action chain has the Scheme attribute it will
+use that instead.
+
+Also, if the targeted Action or Action chain declares Args/CaptureArgs that have
+type constraints, we will require that your proposed URL verify on those declared
+constraints.
+
=cut
sub uri_for {
$path .= '/';
}
- undef($path) if (defined $path && $path eq '');
+ my $fragment = ((scalar(@args) && ref($args[-1]) eq 'SCALAR') ? pop @args : undef );
+
+ unless(blessed $path) {
+ if (defined($path) and $path =~ s/#(.+)$//) {
+ if(defined($1) and $fragment) {
+ carp "Abiguious fragment declaration: You cannot define a fragment in '$path' and as an argument '$fragment'";
+ }
+ if(defined($1)) {
+ $fragment = $1;
+ }
+ }
+ }
my $params =
( scalar @args && ref $args[$#args] eq 'HASH' ? pop @args : {} );
+ undef($path) if (defined $path && $path eq '');
+
carp "uri_for called with undef argument" if grep { ! defined $_ } @args;
- foreach my $arg (@args) {
- utf8::encode($arg) if utf8::is_utf8($arg);
- $arg =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
- }
+ my $target_action = $path->$_isa('Catalyst::Action') ? $path : undef;
if ( $path->$_isa('Catalyst::Action') ) { # action object
s|/|%2F|g for @args;
my $captures = [ map { s|/|%2F|g; $_; }
? @{ shift(@args) }
: ()) ];
- foreach my $capture (@$captures) {
- utf8::encode($capture) if utf8::is_utf8($capture);
- $capture =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
- }
-
my $action = $path;
+ my $expanded_action = $c->dispatcher->expand_action( $action );
+ my $num_captures = $expanded_action->number_of_captures;
+
# ->uri_for( $action, \@captures_and_args, \%query_values? )
if( !@args && $action->number_of_args ) {
- my $expanded_action = $c->dispatcher->expand_action( $action );
+ unshift @args, splice @$captures, $num_captures;
+ }
- my $num_captures = $expanded_action->number_of_captures;
- unshift @args, splice @$captures, $num_captures;
+ if($num_captures) {
+ unless($expanded_action->match_captures_constraints($c, $captures)) {
+ carp "captures [@{$captures}] do not match the type constraints in actionchain ending with '$expanded_action'";
+ return;
+ }
}
- $path = $c->dispatcher->uri_for_action($action, $captures);
+ $path = $c->dispatcher->uri_for_action($action, $captures);
if (not defined $path) {
$c->log->debug(qq/Can't find uri_for action '$action' @$captures/)
if $c->debug;
return undef;
}
$path = '/' if $path eq '';
+
+ # At this point @encoded_args is the remaining Args (all captures removed).
+ if($expanded_action->has_args_constraints) {
+ unless($expanded_action->match_args($c,\@args)) {
+ carp "args [@args] do not match the type constraints in action '$expanded_action'";
+ return;
+ }
+ }
}
unshift(@args, $path);
my ($base, $class) = ('/', 'URI::_generic');
if(blessed($c)) {
$base = $c->req->base;
- $class = ref($base);
+ if($target_action) {
+ $target_action = $c->dispatcher->expand_action($target_action);
+ if(my $s = $target_action->scheme) {
+ $s = lc($s);
+ $class = "URI::$s";
+ $base->scheme($s);
+ } else {
+ $class = ref($base);
+ }
+ } else {
+ $class = ref($base);
+ }
+
$base =~ s{(?<!/)$}{/};
}
my $query = '';
-
if (my @keys = keys %$params) {
# somewhat lifted from URI::_query's query_form
$query = '?'.join('&', map {
my $val = $params->{$_};
- s/([;\/?:@&=+,\$\[\]%])/$URI::Escape::escapes{$1}/go;
+ #s/([;\/?:@&=+,\$\[\]%])/$URI::Escape::escapes{$1}/go; ## Commented out because seems to lead to double encoding - JNAP
s/ /+/g;
my $key = $_;
$val = '' unless defined $val;
(map {
my $param = "$_";
- utf8::encode( $param ) if utf8::is_utf8($param);
+ $param = encode_utf8($param);
# using the URI::Escape pattern here so utf8 chars survive
$param =~ s/([^A-Za-z0-9\-_.!~*'() ])/$URI::Escape::escapes{$1}/go;
$param =~ s/ /+/g;
+
+ $key = encode_utf8($key);
+ # using the URI::Escape pattern here so utf8 chars survive
+ $key =~ s/([^A-Za-z0-9\-_.!~*'() ])/$URI::Escape::escapes{$1}/go;
+ $key =~ s/ /+/g;
+
"${key}=$param"; } ( ref $val eq 'ARRAY' ? @$val : $val ));
} @keys);
}
+ $base = encode_utf8 $base;
+ $base =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
+ $args = encode_utf8 $args;
+ $args =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
+
+ if(defined $fragment) {
+ if(blessed $path) {
+ $fragment = encode_utf8(${$fragment});
+ $fragment =~ s/([^A-Za-z0-9\-_.!~*'() ])/$URI::Escape::escapes{$1}/go;
+ $fragment =~ s/ /+/g;
+ }
+ $query .= "#$fragment";
+ }
+
my $res = bless(\"${base}${args}${query}", $class);
$res;
}
sub execute {
my ( $c, $class, $code ) = @_;
$class = $c->component($class) || $class;
- $c->state(0);
+ #$c->state(0);
if ( $c->depth >= $RECURSION ) {
my $action = $code->reverse();
}
$c->error($error);
}
- $c->state(0);
+ #$c->state(0);
}
return $c->state;
}
$c->finalize_cookies;
+ # This currently is a NOOP but I don't want to remove it since I guess people
+ # might have Response subclasses that use it for something... (JNAP)
$c->response->finalize_headers();
# Done
=head2 $c->finalize_encoding
-Make sure your headers and body are encoded properly IF you set an encoding.
+Make sure your body is encoded properly IF you set an encoding. By
+default the encoding is UTF-8 but you can disable it by explicitly setting the
+encoding configuration value to undef.
+
+We can only encode when the body is a scalar. Methods for encoding via the
+streaming interfaces (such as C<write> and C<write_fh> on L<Catalyst::Response>
+are available).
+
See L</ENCODING>.
=cut
sub finalize_encoding {
my $c = shift;
-
- my $body = $c->response->body;
-
- return unless defined($body);
-
- my $enc = $c->encoding;
-
- return unless $enc;
-
- my ($ct, $ct_enc) = $c->response->content_type;
-
- # Only touch 'text-like' contents
- return unless $c->response->content_type =~ /^text|xml$|javascript$/;
-
- if ($ct_enc && $ct_enc =~ /charset=([^;]*)/) {
- if (uc($1) ne uc($enc->mime_name)) {
- $c->log->debug("Unicode::Encoding is set to encode in '" .
- $enc->mime_name .
- "', content type is '$1', not encoding ");
- return;
- }
- } else {
- $c->res->content_type($c->res->content_type . "; charset=" . $enc->mime_name);
+ my $res = $c->res || return;
+
+ # Warn if the set charset is different from the one you put into encoding. We need
+ # to do this early since encodable_response is false for this condition and we need
+ # to match the debug output for backcompat (there's a test for this...) -JNAP
+ if(
+ $res->content_type_charset and $c->encoding and
+ (uc($c->encoding->mime_name) ne uc($res->content_type_charset))
+ ) {
+ my $ct = lc($res->content_type_charset);
+ $c->log->debug("Catalyst encoding config is set to encode in '" .
+ $c->encoding->mime_name .
+ "', content type is '$ct', not encoding ");
}
- # Oh my, I wonder what filehandle responses and streams do... - jnap.
- # Encode expects plain scalars (IV, NV or PV) and segfaults on ref's
- $c->response->body( $c->encoding->encode( $body, $c->_encode_check ) )
- if ref(\$body) eq 'SCALAR';
+ if(
+ ($res->encodable_response) and
+ (defined($res->body)) and
+ (ref(\$res->body) eq 'SCALAR')
+ ) {
+ $c->res->body( $c->encoding->encode( $c->res->body, $c->_encode_check ) );
+
+ # Set the charset if necessary. This might be a bit bonkers since encodable response
+ # is false when the set charset is not the same as the encoding mimetype (maybe
+ # confusing action at a distance here..
+ # Don't try to set the charset if one already exists or if headers are already finalized
+ $c->res->content_type($c->res->content_type . "; charset=" . $c->encoding->mime_name)
+ unless($c->res->content_type_charset ||
+ ($c->res->_context && $c->res->finalized_headers && !$c->res->_has_response_cb));
+ }
}
=head2 $c->finalize_output
my $c = $class->context_class->new({ $uploadtmp ? (_uploadtmp => $uploadtmp) : ()});
$c->response->_context($c);
-
- #surely this is not the most efficient way to do things...
$c->stats($class->stats_class->new)->enable($c->use_stats);
+
if ( $c->debug || $c->config->{enable_catalyst_header} ) {
$c->res->headers->header( 'X-Catalyst' => $Catalyst::VERSION );
}
sub prepare_body_parameters {
my $c = shift;
- $c->engine->prepare_body_parameters( $c, @_ );
+ $c->request->prepare_body_parameters( $c, @_ );
}
=head2 $c->prepare_connection
$method ||= '';
$path = '/' unless length $path;
$address ||= '';
+
+ $path =~ s/%([0-9A-Fa-f]{2})/chr(hex($1))/eg;
+ $path = decode_utf8($path);
+
$c->log->debug(qq/"$method" request for "$path" from "$address"/);
$c->log_request_headers($request->headers);
sub prepare_uploads {
my $c = shift;
$c->engine->prepare_uploads( $c, @_ );
-
- my $enc = $c->encoding;
- return unless $enc;
-
- # Uggg we hook prepare uploads to do the encoding crap on post and query
- # parameters! Sorry -jnap
- for my $key (qw/ parameters query_parameters body_parameters /) {
- for my $value ( values %{ $c->request->{$key} } ) {
- # N.B. Check if already a character string and if so do not try to double decode.
- # http://www.mail-archive.com/catalyst@lists.scsys.co.uk/msg02350.html
- # this avoids exception if we have already decoded content, and is _not_ the
- # same as not encoding on output which is bad news (as it does the wrong thing
- # for latin1 chars for example)..
- $value = $c->_handle_unicode_decoding($value);
- }
- }
- for my $value ( values %{ $c->request->uploads } ) {
- # skip if it fails for uploads, as we don't usually want uploads touched
- # in any way
- for my $inner_value ( ref($value) eq 'ARRAY' ? @{$value} : $value ) {
- $inner_value->{filename} = try {
- $enc->decode( $inner_value->{filename}, $c->_encode_check )
- } catch {
- $c->handle_unicode_encoding_exception({
- param_value => $inner_value->{filename},
- error_msg => $_,
- encoding_step => 'uploads',
- });
- };
- }
- }
}
=head2 $c->prepare_write
Returns or sets the request class. Defaults to L<Catalyst::Request>.
+=head2 $app->request_class_traits
+
+An arrayref of L<Moose::Role>s which are applied to the request class. You can
+name the full namespace of the role, or a namespace suffix, which will then
+be tried against the following standard namespace prefixes.
+
+ $MyApp::TraitFor::Request::$trait_suffix
+ Catalyst::TraitFor::Request::$trait_suffix
+
+So for example if you set:
+
+ MyApp->request_class_traits(['Foo']);
+
+We try each possible role in turn (and throw an error if none load)
+
+ Foo
+ MyApp::TraitFor::Request::Foo
+ Catalyst::TraitFor::Request::Foo
+
+The namespace part 'TraitFor::Request' was chosen to assist in backwards
+compatibility with L<CatalystX::RoleApplicator> which previously provided
+these features in a stand alone package.
+
+=head2 $app->composed_request_class
+
+This is the request class which has been composed with any request_class_traits.
+
=head2 $c->response_class
Returns or sets the response class. Defaults to L<Catalyst::Response>.
+=head2 $app->response_class_traits
+
+An arrayref of L<Moose::Role>s which are applied to the response class. You can
+name the full namespace of the role, or a namespace suffix, which will then
+be tried against the following standard namespace prefixes.
+
+ $MyApp::TraitFor::Response::$trait_suffix
+ Catalyst::TraitFor::Response::$trait_suffix
+
+So for example if you set:
+
+ MyApp->response_class_traits(['Foo']);
+
+We try each possible role in turn (and throw an error if none load)
+
+ Foo
+ MyApp::TraitFor::Response::Foo
+ Catalyst::TraitFor::Responset::Foo
+
+The namespace part 'TraitFor::Response' was chosen to assist in backwards
+compatibility with L<CatalystX::RoleApplicator> which previously provided
+these features in a stand alone package.
+
+
+=head2 $app->composed_response_class
+
+This is the request class which has been composed with any response_class_traits.
+
=head2 $c->read( [$maxlength] )
Reads a chunk of data from the request body. This method is designed to
}
for my $component (@comps) {
- my $instance = $class->components->{ $component } = $class->setup_component($component);
- my @expanded_components = $instance->can('expand_modules')
- ? $instance->expand_modules( $component, $config )
- : $class->expand_component_module( $component, $config );
- for my $component (@expanded_components) {
- next if $comps{$component};
- $class->components->{ $component } = $class->setup_component($component);
- }
+ my $instance = $class->components->{ $component } = $class->delayed_setup_component($component);
+ }
+
+ # Inject a component or wrap a stand alone class in an adaptor. This makes a list
+ # of named components in the configuration that are not actually existing (not a
+ # real file).
+
+ my @injected = $class->setup_injected_components;
+
+ # All components are registered, now we need to 'init' them.
+ foreach my $component_name (@comps, @injected) {
+ $class->components->{$component_name} = $class->components->{$component_name}->() if
+ (ref($class->components->{$component_name}) || '') eq 'CODE';
}
}
+=head2 $app->setup_injected_components
+
+Called by setup_compoents to setup components that are injected.
+
+=cut
+
+sub setup_injected_components {
+ my ($class) = @_;
+ my @injected_components = keys %{$class->config->{inject_components} ||+{}};
+
+ foreach my $injected_comp_name(@injected_components) {
+ $class->setup_injected_component(
+ $injected_comp_name,
+ $class->config->{inject_components}->{$injected_comp_name});
+ }
+
+ return map { $class ."::" . $_ }
+ @injected_components;
+}
+
+=head2 $app->setup_injected_component( $injected_component_name, $config )
+
+Setup a given injected component.
+
+=cut
+
+sub setup_injected_component {
+ my ($class, $injected_comp_name, $config) = @_;
+ if(my $component_class = $config->{from_component}) {
+ my @roles = @{$config->{roles} ||[]};
+ Catalyst::Utils::inject_component(
+ into => $class,
+ component => $component_class,
+ (scalar(@roles) ? (traits => \@roles) : ()),
+ as => $injected_comp_name);
+ }
+}
+
+=head2 $app->inject_component($MyApp_Component_name => \%args);
+
+Add a component that is injected at setup:
+
+ MyApp->inject_component( 'Model::Foo' => { from_component => 'Common::Foo' } );
+
+Must be called before ->setup. Expects a component name for your
+current application and \%args where
+
+=over 4
+
+=item from_component
+
+The target component being injected into your application
+
+=item roles
+
+An arrayref of L<Moose::Role>s that are applied to your component.
+
+=back
+
+Example
+
+ MyApp->inject_component(
+ 'Model::Foo' => {
+ from_component => 'Common::Model::Foo',
+ roles => ['Role1', 'Role2'],
+ });
+
+=head2 $app->inject_components
+
+Inject a list of components:
+
+ MyApp->inject_components(
+ 'Model::FooOne' => {
+ from_component => 'Common::Model::Foo',
+ roles => ['Role1', 'Role2'],
+ },
+ 'Model::FooTwo' => {
+ from_component => 'Common::Model::Foo',
+ roles => ['Role1', 'Role2'],
+ });
+
+=cut
+
+sub inject_component {
+ my ($app, $name, $args) = @_;
+ die "Component $name exists" if
+ $app->config->{inject_components}->{$name};
+ $app->config->{inject_components}->{$name} = $args;
+}
+
+sub inject_components {
+ my $app = shift;
+ while(@_) {
+ $app->inject_component(shift, shift);
+ }
+}
+
=head2 $c->locate_components( $setup_component_config )
This method is meant to provide a list of component modules that should be
my $config = shift;
my @paths = qw( ::M ::Model ::V ::View ::C ::Controller );
- my $extra = delete $config->{ search_extra } || [];
+ my $extra = $config->{ search_extra } || [];
unshift @paths, @$extra;
return Devel::InnerPackage::list_packages( $module );
}
+=head2 $app->delayed_setup_component
+
+Returns a coderef that points to a setup_component instance. Used
+internally for when you want to delay setup until the first time
+the component is called.
+
+=cut
+
+sub delayed_setup_component {
+ my($class, $component, @more) = @_;
+ return sub {
+ return my $instance = $class->setup_component($component, @more);
+ };
+}
+
=head2 $c->setup_component
=cut
return $component;
}
- my $suffix = Catalyst::Utils::class2classsuffix( $component );
- my $config = $class->config->{ $suffix } || {};
+ my $config = $class->config_for($component);
# 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"/
- );
- }
+ my $instance = eval {
+ $component->COMPONENT( $class, $config );
+ } || do {
+ my $error = $@;
+ chomp $error;
+ Catalyst::Exception->throw(
+ message => qq/Couldn't instantiate component "$component", "$error"/
+ );
+ };
unless (blessed $instance) {
my $metaclass = Moose::Util::find_meta($component);
qq/Couldn't instantiate component "$component", COMPONENT() method (from $component_method_from) didn't return an object-like value (value was $value)./
);
}
- return $instance;
+
+ my @expanded_components = $instance->can('expand_modules')
+ ? $instance->expand_modules( $component, $config )
+ : $class->expand_component_module( $component, $config );
+ for my $component (@expanded_components) {
+ next if $class->components->{ $component };
+ $class->components->{ $component } = $class->setup_component($component);
+ }
+
+ return $instance;
+}
+
+=head2 $app->config_for( $component_name )
+
+Return the application level configuration (which is not yet merged with any
+local component configuration, via $component_class->config) for the named
+component or component object. Example:
+
+ MyApp->config(
+ 'Model::Foo' => { a => 1, b => 2},
+ );
+
+ my $config = MyApp->config_for('MyApp::Model::Foo');
+
+In this case $config is the hashref C< {a=>1, b=>2} >.
+
+This is also handy for looking up configuration for a plugin, to make sure you follow
+existing L<Catalyst> standards for where a plugin should put its configuration.
+
+=cut
+
+sub config_for {
+ my ($class, $component_name) = @_;
+ my $component_suffix = Catalyst::Utils::class2classsuffix($component_name);
+ my $config = $class->config->{ $component_suffix } || {};
+
+ return $config;
}
=head2 $c->setup_dispatcher
Adds the following L<Plack> middlewares to your application, since they are
useful and commonly needed:
-L<Plack::Middleware::ReverseProxy>, (conditionally added based on the status
-of your $ENV{REMOTE_ADDR}, and can be forced on with C<using_frontend_proxy>
-or forced off with C<ignore_frontend_proxy>), L<Plack::Middleware::LighttpdScriptNameFix>
-(if you are using Lighttpd), L<Plack::Middleware::IIS6ScriptNameFix> (always
-applied since this middleware is smart enough to conditionally apply itself).
+L<Plack::Middleware::LighttpdScriptNameFix> (if you are using Lighttpd),
+L<Plack::Middleware::IIS6ScriptNameFix> (always applied since this middleware
+is smart enough to conditionally apply itself).
+
+We will also automatically add L<Plack::Middleware::ReverseProxy> if we notice
+that your HTTP $env variable C<REMOTE_ADDR> is '127.0.0.1'. This is usually
+an indication that your server is running behind a proxy frontend. However in
+2014 this is often not the case. We preserve this code for backwards compatibility
+however I B<highly> recommend that if you are running the server behind a front
+end proxy that you clearly indicate so with the C<using_frontend_proxy> configuration
+setting to true for your environment configurations that run behind a proxy. This
+way if you change your front end proxy address someday your code would inexplicably
+stop working as expected.
Additionally if we detect we are using Nginx, we add a bit of custom middleware
to solve some problems with the way that server handles $ENV{PATH_INFO} and
-$ENV{SCRIPT_NAME}
+$ENV{SCRIPT_NAME}.
+
+Please B<NOTE> that if you do use C<using_frontend_proxy> the middleware is now
+adding via C<registered_middleware> rather than this method.
+
+If you are using Lighttpd or IIS6 you may wish to apply these middlewares. In
+general this is no longer a common case but we have this here for backward
+compatibility.
=cut
sub apply_default_middlewares {
my ($app, $psgi_app) = @_;
- $psgi_app = Plack::Middleware::Conditional->wrap(
- $psgi_app,
- builder => sub { Plack::Middleware::ReverseProxy->wrap($_[0]) },
- condition => sub {
- my ($env) = @_;
- return if $app->config->{ignore_frontend_proxy};
- return $env->{REMOTE_ADDR} eq '127.0.0.1'
- || $app->config->{using_frontend_proxy};
- },
- );
+ # Don't add this conditional IF we are explicitly saying we want the
+ # frontend proxy support. We don't need it here since if that is the
+ # case it will be always loaded in the default_middleware.
+
+ unless($app->config->{using_frontend_proxy}) {
+ $psgi_app = Plack::Middleware::Conditional->wrap(
+ $psgi_app,
+ builder => sub { Plack::Middleware::ReverseProxy->wrap($_[0]) },
+ condition => sub {
+ my ($env) = @_;
+ return if $app->config->{ignore_frontend_proxy};
+ return $env->{REMOTE_ADDR} eq '127.0.0.1';
+ },
+ );
+ }
# If we're running under Lighttpd, swap PATH_INFO and SCRIPT_NAME
# http://lists.scsys.co.uk/pipermail/catalyst/2006-June/008361.html
return $psgi_app;
}
-=head2 $c->psgi_app
+=head2 App->psgi_app
+
+=head2 App->to_app
Returns a PSGI application code reference for the catalyst application
-C<$c>. This is the bare application without any middlewares
-applied. C<${myapp}.psgi> is not taken into account.
+C<$c>. This is the bare application created without the C<apply_default_middlewares>
+method called. We do however apply C<registered_middleware> since those are
+integral to how L<Catalyst> functions. Also, unlike starting your application
+with a generated server script (via L<Catalyst::Devel> and C<catalyst.pl>) we do
+not attempt to return a valid L<PSGI> application using any existing C<${myapp}.psgi>
+scripts in your $HOME directory.
+
+B<NOTE> C<apply_default_middlewares> was originally created when the first PSGI
+port was done for v5.90000. These are middlewares that are added to achieve
+backward compatibility with older applications. If you start your application
+using one of the supplied server scripts (generated with L<Catalyst::Devel> and
+the project skeleton script C<catalyst.pl>) we apply C<apply_default_middlewares>
+automatically. This was done so that pre and post PSGI port applications would
+work the same way.
This is what you want to be using to retrieve the PSGI application code
-reference of your Catalyst application for use in F<.psgi> files.
+reference of your Catalyst application for use in a custom F<.psgi> or in your
+own created server modules.
=cut
+*to_app = \&psgi_app;
+
sub psgi_app {
my ($app) = @_;
my $psgi = $app->engine->build_psgi_app($app);
sub setup_encoding {
my $c = shift;
- my $enc = delete $c->config->{encoding};
- $c->encoding( $enc ) if defined $enc;
+ if( exists($c->config->{encoding}) && !defined($c->config->{encoding}) ) {
+ # Ok, so the user has explicitly said "I don't want encoding..."
+ return;
+ } else {
+ my $enc = defined($c->config->{encoding}) ?
+ delete $c->config->{encoding} : 'UTF-8'; # not sure why we delete it... (JNAP)
+ $c->encoding($enc);
+ }
}
=head2 handle_unicode_encoding_exception
return $value;
}
elsif ( ref $value eq 'HASH' ) {
- foreach ( values %$value ) {
- $_ = $self->_handle_unicode_decoding($_);
+ foreach (keys %$value) {
+ my $encoded_key = $self->_handle_param_unicode_decoding($_);
+ $value->{$encoded_key} = $self->_handle_unicode_decoding($value->{$_});
+
+ # If the key was encoded we now have two (the original and current so
+ # delete the original.
+ delete $value->{$_} if $_ ne $encoded_key;
}
return $value;
}
sub _handle_param_unicode_decoding {
my ( $self, $value ) = @_;
return unless defined $value; # not in love with just ignoring undefs - jnap
+ return $value if blessed($value); #don't decode when the value is an object.
my $enc = $self->encoding;
return try {
- Encode::is_utf8( $value ) ?
- $value
- : $enc->decode( $value, $self->_encode_check );
+ $enc->decode( $value, $self->_encode_check );
}
catch {
$self->handle_unicode_encoding_exception({
}
}
+=head2 default_middleware
+
+Returns a list of instantiated PSGI middleware objects which is the default
+middleware that is active for this application (taking any configuration
+options into account, excluding your custom added middleware via the C<psgi_middleware>
+configuration option). You can override this method if you wish to change
+the default middleware (although do so at risk since some middleware is vital
+to application function.)
+
+The current default middleware list is:
+
+ Catalyst::Middleware::Stash
+ Plack::Middleware::HTTPExceptions
+ Plack::Middleware::RemoveRedundantBody
+ Plack::Middleware::FixMissingBodyInRedirect
+ Plack::Middleware::ContentLength
+ Plack::Middleware::MethodOverride
+ Plack::Middleware::Head
+
+If the configuration setting C<using_frontend_proxy> is true we add:
+
+ Plack::Middleware::ReverseProxy
+
+If the configuration setting C<using_frontend_proxy_path> is true we add:
+
+ Plack::Middleware::ReverseProxyPath
+
+But B<NOTE> that L<Plack::Middleware::ReverseProxyPath> is not a dependency of the
+L<Catalyst> distribution so if you want to use this option you should add it to
+your project distribution file.
+
+These middlewares will be added at L</setup_middleware> during the
+L</setup> phase of application startup.
+
+=cut
+
+sub default_middleware {
+ my $class = shift;
+ my @mw = (
+ Catalyst::Middleware::Stash->new,
+ Plack::Middleware::HTTPExceptions->new,
+ Plack::Middleware::RemoveRedundantBody->new,
+ Plack::Middleware::FixMissingBodyInRedirect->new,
+ Plack::Middleware::ContentLength->new,
+ Plack::Middleware::MethodOverride->new,
+ Plack::Middleware::Head->new);
+
+ if($class->config->{using_frontend_proxy}) {
+ push @mw, Plack::Middleware::ReverseProxy->new;
+ }
+
+ if($class->config->{using_frontend_proxy_path}) {
+ if(Class::Load::try_load_class('Plack::Middleware::ReverseProxyPath')) {
+ push @mw, Plack::Middleware::ReverseProxyPath->new;
+ } else {
+ $class->log->error("Cannot use configuration 'using_frontend_proxy_path' because 'Plack::Middleware::ReverseProxyPath' is not installed");
+ }
+ }
+
+ return @mw;
+}
+
=head2 registered_middlewares
Read only accessor that returns an array of all the middleware in the order
sub registered_middlewares {
my $class = shift;
if(my $middleware = $class->_psgi_middleware) {
- return (
- Catalyst::Middleware::Stash->new,
- Plack::Middleware::HTTPExceptions->new,
- Plack::Middleware::RemoveRedundantBody->new,
- Plack::Middleware::FixMissingBodyInRedirect->new,
- Plack::Middleware::ContentLength->new,
- Plack::Middleware::MethodOverride->new,
- Plack::Middleware::Head->new,
- @$middleware);
+ my @mw = ($class->default_middleware, @$middleware);
+
+ if($class->config->{using_frontend_proxy}) {
+ push @mw, Plack::Middleware::ReverseProxy->new;
+ }
+
+ return @mw;
} else {
die "You cannot call ->registered_middlewares until middleware has been setup";
}
sub setup_middleware {
my $class = shift;
- my @middleware_definitions = @_ ?
- reverse(@_) : reverse(@{$class->config->{'psgi_middleware'}||[]});
+ my @middleware_definitions;
+
+ # If someone calls this method you can add middleware with args. However if its
+ # called without an arg we need to setup the configuration middleware.
+ if(@_) {
+ @middleware_definitions = reverse(@_);
+ } else {
+ @middleware_definitions = reverse(@{$class->config->{'psgi_middleware'}||[]})
+ unless $class->finalized_default_middleware;
+ $class->finalized_default_middleware(1); # Only do this once, just in case some people call setup over and over...
+ }
my @middleware = ();
while(my $next = shift(@middleware_definitions)) {
return eval {
local $/;
$slurped = $fh->getline;
- $parser->can("decode_json")->($slurped);
+ $parser->can("decode_json")->($slurped); # decode_json does utf8 decoding for us
} || Catalyst::Exception->throw(sprintf "Error Parsing POST '%s', Error: %s", (defined($slurped) ? $slurped : 'undef') ,$@);
},
};
Returns or sets the stats (timing statistics) class. L<Catalyst::Stats|Catalyst::Stats> is used by default.
+=head2 $app->stats_class_traits
+
+A arrayref of L<Moose::Role>s that are applied to the stats_class before creating it.
+
+=head2 $app->composed_stats_class
+
+this is the stats_class composed with any 'stats_class_traits'. You can
+name the full namespace of the role, or a namespace suffix, which will then
+be tried against the following standard namespace prefixes.
+
+ $MyApp::TraitFor::Stats::$trait_suffix
+ Catalyst::TraitFor::Stats::$trait_suffix
+
+So for example if you set:
+
+ MyApp->stats_class_traits(['Foo']);
+
+We try each possible role in turn (and throw an error if none load)
+
+ Foo
+ MyApp::TraitFor::Stats::Foo
+ Catalyst::TraitFor::Stats::Foo
+
+The namespace part 'TraitFor::Stats' was chosen to assist in backwards
+compatibility with L<CatalystX::RoleApplicator> which previously provided
+these features in a stand alone package.
+
=head2 $c->use_stats
Returns 1 when L<< stats collection|/"-Stats" >> is enabled.
=item *
+C<using_frontend_proxy_path> - Enabled L<Plack::Middleware::ReverseProxyPath> on your application (if
+installed, otherwise log an error). This is useful if your application is not running on the
+'root' (or /) of your host server. B<NOTE> if you use this feature you should add the required
+middleware to your project dependency list since its not automatically a dependency of L<Catalyst>.
+This has been done since not all people need this feature and we wish to restrict the growth of
+L<Catalyst> dependencies.
+
+=item *
+
C<encoding> - See L</ENCODING>
+This now defaults to 'UTF-8'. You my turn it off by setting this configuration
+value to undef.
+
=item *
C<abort_chain_on_error_fix>
=item *
+C<skip_complex_post_part_handling>
+
+When creating body parameters from a POST, if we run into a multipart POST
+that does not contain uploads, but instead contains inlined complex data
+(very uncommon) we cannot reliably convert that into field => value pairs. So
+instead we create an instance of L<Catalyst::Request::PartData>. If this causes
+issue for you, you can disable this by setting C<skip_complex_post_part_handling>
+to true (default is false).
+
+=item *
+
+C<skip_body_param_unicode_decoding>
+
+Generally we decode incoming POST params based on your declared encoding (the
+default for this is to decode UTF-8). If this is causing you trouble and you
+do not wish to turn all encoding support off (with the C<encoding> configuration
+parameter) you may disable this step atomically by setting this configuration
+parameter to true.
+
+=item *
+
+C<do_not_decode_query>
+
+If true, then do not try to character decode any wide characters in your
+request URL query or keywords. Most readings of the relevant specifications
+suggest these should be UTF-* encoded, which is the default that L<Catalyst>
+will use, however if you are creating a lot of URLs manually or have external
+evil clients, this might cause you trouble. If you find the changes introduced
+in Catalyst version 5.90080+ break some of your query code, you may disable
+the UTF-8 decoding globally using this configuration.
+
+This setting takes precedence over C<default_query_encoding> and
+C<decode_query_using_global_encoding>
+
+=item *
+
+C<default_query_encoding>
+
+By default we decode query and keywords in your request URL using UTF-8, which
+is our reading of the relevant specifications. This setting allows one to
+specify a fixed value for how to decode your query. You might need this if
+you are doing a lot of custom encoding of your URLs and not using UTF-8.
+
+This setting take precedence over C<decode_query_using_global_encoding>.
+
+=item *
+
+C<decode_query_using_global_encoding>
+
+Setting this to true will default your query decoding to whatever your
+general global encoding is (the default is UTF-8).
+
+=item *
+
+C<use_chained_args_0_special_case>
+
+In older versions of Catalyst, when more than one action matched the same path
+AND all those matching actions declared Args(0), we'd break the tie by choosing
+the first action defined. We now normalized how Args(0) works so that it
+follows the same rule as Args(N), which is to say when we need to break a tie
+we choose the LAST action defined. If this breaks your code and you don't
+have time to update to follow the new normalized approach, you may set this
+value to true and it will globally revert to the original chaining behavior.
+
+=item *
+
C<psgi_middleware> - See L<PSGI MIDDLEWARE>.
=item *
C<data_handlers> - See L<DATA HANDLERS>.
+=item *
+
+C<stats_class_traits>
+
+An arrayref of L<Moose::Role>s that get composed into your stats class.
+
+=item *
+
+C<request_class_traits>
+
+An arrayref of L<Moose::Role>s that get composed into your request class.
+
+=item *
+
+C<response_class_traits>
+
+An arrayref of L<Moose::Role>s that get composed into your response class.
+
+=item *
+
+C<inject_components>
+
+A Hashref of L<Catalyst::Component> subclasses that are 'injected' into configuration.
+For example:
+
+ MyApp->config({
+ inject_components => {
+ 'Controller::Err' => { from_component => 'Local::Controller::Errors' },
+ 'Model::Zoo' => { from_component => 'Local::Model::Foo' },
+ 'Model::Foo' => { from_component => 'Local::Model::Foo', roles => ['TestRole'] },
+ },
+ 'Controller::Err' => { a => 100, b=>200, namespace=>'error' },
+ 'Model::Zoo' => { a => 2 },
+ 'Model::Foo' => { a => 100 },
+ });
+
+Generally L<Catalyst> looks for components in your Model/View or Controller directories.
+However for cases when you which to use an existing component and you don't need any
+customization (where for when you can apply a role to customize it) you may inject those
+components into your application. Please note any configuration should be done 'in the
+normal way', with a key under configuration named after the component affix, as in the
+above example.
+
+Using this type of injection allows you to construct significant amounts of your application
+with only configuration!. This may or may not lead to increased code understanding.
+
+Please not you may also call the ->inject_components application method as well, although
+you must do so BEFORE setup.
+
=back
=head1 EXCEPTIONS
=head1 ENCODING
-On request, decodes all params from encoding into a sequence of
-logical characters. On response, encodes body into encoding.
+Starting in L<Catalyst> version 5.90080 encoding is automatically enabled
+and set to encode all body responses to UTF8 when possible and applicable.
+Following is documentation on this process. If you are using an older
+version of L<Catalyst> you should review documentation for that version since
+a lot has changed.
+
+By default encoding is now 'UTF-8'. You may turn it off by setting
+the encoding configuration to undef.
+
+ MyApp->config(encoding => undef);
+
+This is recommended for temporary backwards compatibility only.
+
+Encoding is automatically applied when the content-type is set to
+a type that can be encoded. Currently we encode when the content type
+matches the following regular expression:
+
+ $content_type =~ /^text|xml$|javascript$/
+
+Encoding is set on the application, but it is copied to the context object
+so that you can override it on a request basis.
+
+Be default we don't automatically encode 'application/json' since the most
+common approaches to generating this type of response (Either via L<Catalyst::View::JSON>
+or L<Catalyst::Action::REST>) will do so already and we want to avoid double
+encoding issues.
+
+If you are producing JSON response in an unconventional manner (such
+as via a template or manual strings) you should perform the UTF8 encoding
+manually as well such as to conform to the JSON specification.
+
+NOTE: We also examine the value of $c->response->content_encoding. If
+you set this (like for example 'gzip', and manually gzipping the body)
+we assume that you have done all the necessary encoding yourself, since
+we cannot encode the gzipped contents. If you use a plugin like
+L<Catalyst::Plugin::Compress> you need to update to a modern version in order
+to have this function correctly with the new UTF8 encoding code, or you
+can use L<Plack::Middleware::Deflater> or (probably best) do your compression on
+a front end proxy.
=head2 Methods
abraxxa: Alexander Hartmaier <abraxxa@cpan.org>
+andrewalker: André Walker <andre@cpan.org>
+
Andrew Bramble
Andrew Ford E<lt>A.Ford@ford-mason.co.ukE<gt>
Upasana <me@upasana.me>
+John Napiorkowski (jnap) <jjnapiork@cpan.org>
+
=head1 COPYRIGHT
Copyright (c) 2005-2015, the above named PROJECT FOUNDER and CONTRIBUTORS.