#ABSTRACT: Provides a DBIx::Class web service automagically
use Moose;
-BEGIN { extends 'Catalyst::Controller'; }
+BEGIN { extends 'Catalyst::Controller::ActionRole'; }
use CGI::Expand ();
use DBIx::Class::ResultClass::HashRefInflator;
use Catalyst::Controller::DBIC::API::Request;
use namespace::autoclean;
-with 'Catalyst::Controller::DBIC::API::StoredResultSource';
-with 'Catalyst::Controller::DBIC::API::StaticArguments';
-with 'Catalyst::Controller::DBIC::API::RequestArguments' => { static => 1 };
+with 'Catalyst::Controller::DBIC::API::StoredResultSource',
+ 'Catalyst::Controller::DBIC::API::StaticArguments',
+ 'Catalyst::Controller::DBIC::API::RequestArguments' => { static => 1 };
__PACKAGE__->config();
__PACKAGE__->config
( action => { setup => { PathPart => 'artist', Chained => '/api/rpc/rpc_base' } }, # define parent chain action and partpath
- class => 'MyAppDB::Artist', # DBIC schema class
- create_requires => ['name', 'age'], # columns required to create
- create_allows => ['nickname'], # additional non-required columns that create allows
- update_allows => ['name', 'age', 'nickname'], # columns that update allows
- update_allows => ['name', 'age', 'nickname'], # columns that update allows
- select => [qw/name age/], # columns that data returns
- prefetch => ['cds'], # relationships that are prefetched when no prefetch param is passed
- prefetch_allows => [ # every possible prefetch param allowed
+ class => 'MyAppDB::Artist',
+ result_class => 'MyAppDB::ResultSet::Artist',
+ create_requires => ['name', 'age'],
+ create_allows => ['nickname'],
+ update_allows => ['name', 'age', 'nickname'],
+ update_allows => ['name', 'age', 'nickname'],
+ select => [qw/name age/],
+ prefetch => ['cds'],
+ prefetch_allows => [
'cds',
qw/ cds /,
{ cds => 'tracks' },
- { cds => [qw/ tracks /] }
+ { cds => [qw/ tracks /] },
],
- ordered_by => [qw/age/], # order of generated list
- search_exposes => [qw/age nickname/, { cds => [qw/title year/] }], # columns that can be searched on via list
- data_root => 'data' # defaults to "list" for backwards compatibility
- use_json_boolean => 1, # use JSON::Any::true|false in the response instead of strings
- return_object => 1, # makes create and update actions return the object
+ ordered_by => [qw/age/],
+ search_exposes => [qw/age nickname/, { cds => [qw/title year/] }],
+ data_root => 'data',
+ use_json_boolean => 1,
+ return_object => 1,
);
# Provides the following functional endpoints:
unless Moose::Util::does_role($c->req, 'Catalyst::Controller::DBIC::API::Request');
}
-
=method_protected setup
:Chained('specify.in.subclass.config') :CaptureArgs(0) :PathPart('specify.in.subclass.config')
This action is the chain root of the controller. It must either be overridden or configured to provide a base pathpart to the action and also a parent action. For example, for class MyAppDB::Track you might have
package MyApp::Controller::API::RPC::Track;
- use Moose;
+ use Moose;
BEGIN { extends 'Catalyst::Controller::DBIC::API::RPC'; }
__PACKAGE__->config
- ( action => { setup => { PathPart => 'track', Chained => '/api/rpc/rpc_base' } },
+ ( action => { setup => { PathPart => 'track', Chained => '/api/rpc/rpc_base' } },
...
);
{
$req_params = $c->req->data;
}
- else
+ else
{
$req_params = CGI::Expand->expand_hash($c->req->params);
$req_params->{$param}->{$key} = $deserialized;
}
catch
- {
+ {
$c->log->debug("Param '$param.$key' did not deserialize appropriately: $_")
if $c->debug;
}
$req_params->{$param} = $deserialized;
}
catch
- {
+ {
$c->log->debug("Param '$param' did not deserialize appropriately: $_")
if $c->debug;
}
}
}
}
-
+
$self->inflate_request($c, $req_params);
}
sub generate_rs
{
- my ($self, $c) = @_;
+ #my ($self, $c) = @_;
+ my ($self) = @_;
+
return $self->stored_result_source->resultset;
}
-
=method_protected inflate_request
-
+
inflate_request is called at the end of deserialize to populate key portions of the request with the useful bits
=cut
try
{
# set static arguments
- $c->req->_set_controller($self);
+ $c->req->_set_controller($self);
# set request arguments
$c->req->_set_request_data($params);
# set the current resultset
$c->req->_set_current_result_set($self->generate_rs($c));
-
+
}
catch
{
sub objects_no_id :Chained('deserialize') :CaptureArgs(0) :PathPart('')
{
my ($self, $c) = @_;
-
+
if($c->req->has_request_data)
{
my $data = $c->req->request_data;
my $vals;
-
+
if(exists($data->{$self->data_root}) && defined($data->{$self->data_root}))
{
my $root = $data->{$self->data_root};
=method_protected list
- :Private
-
-List level action chained from L</setup>. List's steps are broken up into three distinct methods: L</list_munge_parameters>, L</list_perform_search>, and L</list_format_output>.
+list's steps are broken up into three distinct methods: L</list_munge_parameters>, L</list_perform_search>, and L</list_format_output>.
-The goal of this method is to call ->search() on the current_result_set, HashRefInflator the result, and return it in $c->stash->{response}->{$self->data_root}. Please see the individual methods for more details on what actual processing takes place.
+The goal of this method is to call ->search() on the current_result_set, change resultset class of the result (if needed), and return it in $c->stash->{$self->stash_key}->{$self->data_root}. Please see the individual methods for more details on what actual processing takes place.
If the L</select> config param is defined then the hashes will contain only those columns, otherwise all columns in the object will be returned. L</select> of course supports the function/procedure calling semantics that L<DBIx::Class::ResultSet/select>. In order to have proper column names in the result, provide arguments in L</as> (which also follows L<DBIx::Class::ResultSet/as> semantics. Similarly L</count>, L</page>, L</grouped_by> and L</ordered_by> affect the maximum number of rows returned as well as the ordering and grouping. Note that if select, count, ordered_by or grouped_by request parameters are present then these will override the values set on the class with select becoming bound by the select_exposes attribute.
?page=2&count=20
Would result in this search:
-
+
$rs->search({}, { page => 2, rows => 20 })
=cut
-sub list :Private
+sub list
{
my ($self, $c) = @_;
$self->list_format_output($c);
# make sure there are no objects lingering
- $c->req->clear_objects();
+ $c->req->clear_objects();
}
=method_protected list_munge_parameters
list_munge_parameters is a noop by default. All arguments will be passed through without any manipulation. In order to successfully manipulate the parameters before the search is performed, simply access $c->req->search_parameters|search_attributes (ArrayRef and HashRef respectively), which correspond directly to ->search($parameters, $attributes). Parameter keys will be in already-aliased form.
+To store the munged parameters call $c->req->_set_search_parameters($newparams) and $c->req->_set_search_attributes($newattrs).
=cut
sub list_perform_search
{
my ($self, $c) = @_;
-
- try
+
+ try
{
my $req = $c->req;
-
+
my $rs = $req->current_result_set->search
(
- $req->search_parameters,
+ $req->search_parameters,
$req->search_attributes
);
my ($self, $c) = @_;
my $rs = $c->req->current_result_set->search;
- $rs->result_class('DBIx::Class::ResultClass::HashRefInflator');
-
+ $rs->result_class($self->result_class) if $self->result_class;
+
try
{
my $output = {};
my $formatted = [];
-
+
foreach my $row ($rs->all)
{
push(@$formatted, $self->row_format_output($c, $row));
}
-
+
$output->{$self->data_root} = $formatted;
if ($c->req->has_search_total_entries)
$output->{$self->total_entries_arg} = $c->req->search_total_entries + 0;
}
- $c->stash->{response} = $output;
+ $c->stash->{$self->stash_key} = $output;
}
catch
{
sub row_format_output
{
- my ($self, $c, $row) = @_;
+ #my ($self, $c, $row) = @_;
+ my ($self, undef, $row) = @_;
return $row; # passthrough by default
}
=method_protected item
-
- :Private
item will return a single object called by identifier in the uri. It will be inflated via each_object_inflate.
=cut
-sub item :Private
+sub item
{
my ($self, $c) = @_;
}
else
{
- $c->stash->{response}->{$self->item_root} = $self->each_object_inflate($c, $c->req->get_object(0)->[0]);
+ $c->stash->{$self->stash_key}->{$self->item_root} = $self->each_object_inflate($c, $c->req->get_object(0)->[0]);
}
}
-
=method_protected update_or_create
- :Private
-
update_or_create is responsible for iterating any stored objects and performing updates or creates. Each object is first validated to ensure it meets the criteria specified in the L</create_requires> and L</create_allows> (or L</update_allows>) parameters of the controller config. The objects are then committed within a transaction via L</transact_objects> using a closure around L</save_objects>.
=cut
-sub update_or_create :Private
+sub update_or_create
{
my ($self, $c) = @_;
-
+
if($c->req->has_objects)
{
$self->validate_objects($c);
sub transact_objects
{
my ($self, $c, $coderef) = @_;
-
+
try
{
$self->stored_result_source->schema->txn_do
{
my $err = $_;
$c->log->error($err);
- $err =~ s/\s+at\s+\/.+\n$//g;
+ $err =~ s/\s+at\s+.+\n$//g;
$self->push_error($c, { message => $err });
$c->detach();
}
my %requires_map = map
{
$_ => 1
- }
+ }
@{
- ($object->in_storage)
- ? []
+ ($object->in_storage)
+ ? []
: $c->stash->{create_requires} || $self->create_requires
};
-
+
my %allows_map = map
{
(ref $_) ? %{$_} : ($_ => 1)
- }
+ }
(
- keys %requires_map,
+ keys %requires_map,
@{
- ($object->in_storage)
- ? ($c->stash->{update_allows} || $self->update_allows)
+ ($object->in_storage)
+ ? ($c->stash->{update_allows} || $self->update_allows)
: ($c->stash->{create_allows} || $self->create_allows)
}
);
{
# check value defined if key required
my $allowed_fields = $allows_map{$key};
-
+
if (ref $allowed_fields)
{
my $related_source = $object->result_source->related_source($key);
my $related_params = $params->{$key};
my %allowed_related_map = map { $_ => 1 } @$allowed_fields;
my $allowed_related_cols = ($allowed_related_map{'*'}) ? [$related_source->columns] : $allowed_fields;
-
+
foreach my $related_col (@{$allowed_related_cols})
{
- if (my $related_col_value = $related_params->{$related_col}) {
+ if (defined(my $related_col_value = $related_params->{$related_col})) {
$values{$key}{$related_col} = $related_col_value;
}
}
}
- else
+ else
{
my $value = $params->{$key};
}
}
}
-
+
# check for multiple values
- if (ref($value) && !($value == JSON::Any::true || $value == JSON::Any::false))
+ if (ref($value) && !(reftype($value) eq reftype(JSON::Any::true)))
{
require Data::Dumper;
die "Multiple values for '${key}': ${\Data::Dumper::Dumper($value)}";
}
}
- unless (keys %values || !$object->in_storage)
+ unless (keys %values || !$object->in_storage)
{
die 'No valid keys passed';
}
- return \%values;
+ return \%values;
}
=method_protected delete
- :Private
-
delete operates on the stored objects in the request. It first transacts the objects, deleting them in the database using L</transact_objects> and a closure around L</delete_objects>, and then clears the request store of objects.
=cut
-sub delete :Private
+sub delete
{
my ($self, $c) = @_;
-
+
if($c->req->has_objects)
{
$self->transact_objects($c, sub { $self->delete_objects($c, @_) });
{
$self->update_object_from_params($c, $object, $params);
}
- else
+ else
{
$self->insert_object_from_params($c, $object, $params);
}
=method_protected update_object_from_params
-update_object_from_params iterates through the params to see if any of them are pertinent to relations. If so it calls L</update_object_relation> with the object, and the relation parameters. Then it calls ->upbdate on the object.
+update_object_from_params iterates through the params to see if any of them are pertinent to relations. If so it calls L</update_object_relation> with the object, and the relation parameters. Then it calls ->update on the object.
=cut
foreach my $key (keys %$params)
{
my $value = $params->{$key};
- if (ref($value) && !($value == JSON::Any::true || $value == JSON::Any::false))
+ if (ref($value) && !(reftype($value) eq reftype(JSON::Any::true)))
{
$self->update_object_relation($c, $object, delete $params->{$key}, $key);
}
+ # accessor = colname
+ elsif ($object->can($key)) {
+ $object->$key($value);
+ }
+ # accessor != colname
+ else {
+ my $accessor = $object->result_source->column_info($key)->{accessor};
+ $object->$accessor($value);
+ }
}
-
- $object->update($params);
+
+ $object->update();
}
=method_protected update_object_relation
{
my ($self, $c, $object, $related_params, $relation) = @_;
my $row = $object->find_related($relation, {} , {});
- $row->update($related_params);
+
+ if ($row) {
+ foreach my $key (keys %$related_params) {
+ my $value = $related_params->{$key};
+ if (ref($value) && !(reftype($value) eq reftype(JSON::Any::true)))
+ {
+ $self->update_object_relation($c, $row, delete $related_params->{$key}, $key);
+ }
+ # accessor = colname
+ elsif ($row->can($key)) {
+ $row->$key($value);
+ }
+ # accessor != colname
+ else {
+ my $accessor = $row->result_source->column_info($key)->{accessor};
+ $row->$accessor($value);
+ }
+ }
+ $row->update();
+ }
+ else {
+ $object->create_related($relation, $related_params);
+ }
}
=method_protected insert_object_from_params
sub insert_object_from_params
{
- my ($self, $c, $object, $params) = @_;
- $object->set_columns($params);
+ #my ($self, $c, $object, $params) = @_;
+ my ($self, undef, $object, $params) = @_;
+
+ my %rels;
+ while (my ($k, $v) = each %{ $params }) {
+ if (ref($v) && !(reftype($v) eq reftype(JSON::Any::true))) {
+ $rels{$k} = $v;
+ }
+ else {
+ $object->set_column($k => $v);
+ }
+ }
+
$object->insert;
+
+ while (my ($k, $v) = each %rels) {
+ $object->create_related($k, $v);
+ }
}
=method_protected delete_objects
sub delete_object
{
- my ($self, $c, $object) = @_;
+ #my ($self, $c, $object) = @_;
+ my ($self, undef, $object) = @_;
$object->delete;
}
=method_protected end
- :Private
-
end performs the final manipulation of the response before it is serialized. This includes setting the success of the request both at the HTTP layer and JSON layer. If configured with return_object true, and there are stored objects as the result of create or update, those will be inflated according to the schema and get_inflated_columns
=cut
-sub end :Private
+sub end :Private
{
my ($self, $c) = @_;
# Check for errors caught elsewhere
if ( $c->res->status and $c->res->status != 200 ) {
$default_status = $c->res->status;
- $c->stash->{response}->{success} = $self->use_json_boolean ? JSON::Any::false : 'false';
+ $c->stash->{$self->stash_key}->{success} = $self->use_json_boolean ? JSON::Any::false : 'false';
} elsif ($self->get_errors($c)) {
- $c->stash->{response}->{messages} = $self->get_errors($c);
- $c->stash->{response}->{success} = $self->use_json_boolean ? JSON::Any::false : 'false';
+ $c->stash->{$self->stash_key}->{messages} = $self->get_errors($c);
+ $c->stash->{$self->stash_key}->{success} = $self->use_json_boolean ? JSON::Any::false : 'false';
$default_status = 400;
} else {
- $c->stash->{response}->{success} = $self->use_json_boolean ? JSON::Any::true : 'true';
+ $c->stash->{$self->stash_key}->{success} = $self->use_json_boolean ? JSON::Any::true : 'true';
$default_status = 200;
}
-
+
unless ($default_status == 200)
{
- delete $c->stash->{response}->{$self->data_root};
+ delete $c->stash->{$self->stash_key}->{$self->data_root};
}
elsif($self->return_object && $c->req->has_objects)
{
my $returned_objects = [];
push(@$returned_objects, $self->each_object_inflate($c, $_)) for map { $_->[0] } $c->req->all_objects;
- $c->stash->{response}->{$self->data_root} = scalar(@$returned_objects) > 1 ? $returned_objects : $returned_objects->[0];
+ $c->stash->{$self->stash_key}->{$self->data_root} = scalar(@$returned_objects) > 1 ? $returned_objects : $returned_objects->[0];
}
$c->res->status( $default_status || 200 );
sub each_object_inflate
{
- my ($self, $c, $object) = @_;
+ #my ($self, $c, $object) = @_;
+ my ($self, undef, $object) = @_;
- return { $object->get_inflated_columns };
+ return { $object->get_columns };
}
+=method_protected serialize
+
+multiple actions forward to serialize which uses Catalyst::Action::Serialize.
+
+=cut
+
# from Catalyst::Action::Serialize
sub serialize :ActionClass('Serialize') { }
sub push_error
{
my ( $self, $c, $params ) = @_;
- push( @{$c->stash->{_dbic_crud_errors}}, $params->{message} || 'unknown error' );
+ my $error = 'unknown error';
+ if (exists $params->{message}) {
+ $error = $params->{message};
+ # remove newline from die "error message\n" which is required to not
+ # have the filename and line number in the error text
+ $error =~ s/\n$//;
+ }
+ push( @{$c->stash->{_dbic_crud_errors}}, $error);
}
=method_protected get_errors
Whatever you would pass to $c->model to get a resultset for this class. MyAppDB::Track for example.
+=head3 resultset_class
+
+Desired resultset class after accessing your model. MyAppDB::ResultSet::Track for example. By default, it's DBIx::Class::ResultClass::HashRefInflator. Set to empty string to leave resultset class without change.
+
+=head3 stash_key
+
+Controls where in stash request_data should be stored, and defaults to 'response'.
+
=head3 data_root
-By default, the response data is serialized into $c->stash->{response}->{$self->data_root} and data_root defaults to 'list' to preserve backwards compatibility. This is now configuable to meet the needs of the consuming client.
+By default, the response data is serialized into $c->stash->{$self->stash_key}->{$self->data_root} and data_root defaults to 'list' to preserve backwards compatibility. This is now configuable to meet the needs of the consuming client.
=head3 use_json_boolean
You can also use this to allow custom columns should you wish to allow them through in order to be caught by a custom resultset. For example:
package RestTest::Controller::API::RPC::TrackExposed;
-
+
...
-
+
__PACKAGE__->config
( ...,
search_exposes => [qw/position title custom_column/],
and then in your custom resultset:
package RestTest::Schema::ResultSet::Track;
-
+
use base 'RestTest::Schema::ResultSet';
-
+
sub search {
my $self = shift;
my ($clause, $params) = @_;
=head3 page
-Arguments to pass to L<DBIx::Class::ResultSet/rows> when performing search for L</list>.
+Arguments to pass to L<DBIx::Class::ResultSet/page> when performing search for L</list>.
=head1 EXTENDING
# $c->req->all_objects will contain all of the created
$self->next::method($c);
- if ($c->req->has_objects) {
- # $c->stash->{response} will be serialized in the end action
- $c->stash->{response}->{$self->data_root} = [ map { { $_->get_inflated_columns } } ($c->req->all_objects) ] ;
+ if ($c->req->has_objects) {
+ # $c->stash->{$self->stash_key} will be serialized in the end action
+ $c->stash->{$self->stash_key}->{$self->data_root} = [ map { { $_->get_inflated_columns } } ($c->req->all_objects) ] ;
}
}
-
package MyApp::Controller::API::RPC::Track;
...
use Moose;
Similarly you might want create, update and delete to all forward to the list action once they are done so you can refresh your view. This should also be simple enough.
-If more extensive customization is required, it is recommened to peer into the roles that comprise the system and make use
+If more extensive customization is required, it is recommened to peer into the roles that comprise the system and make use
=head1 NOTES
projects / catagits/Catalyst-Controller-DBIC-API.git / blobdiff