package Catalyst::Helper::Model::DBIC::Schema;
use namespace::autoclean;
use Moose;
no warnings 'uninitialized';
our $VERSION = '0.30';
use Carp;
use Tie::IxHash ();
use Data::Dumper ();
use List::Util 'first';
use MooseX::Types::Moose qw/Str HashRef Bool ArrayRef/;
use Catalyst::Model::DBIC::Schema::Types 'CreateOption';
use List::MoreUtils 'firstidx';
use Scalar::Util 'looks_like_number';
=head1 NAME
Catalyst::Helper::Model::DBIC::Schema - Helper for DBIC Schema Models
=head1 SYNOPSIS
script/create.pl model CatalystModelName DBIC::Schema MyApp::SchemaClass \
[ create=dynamic | create=static ] [ traits=trait1,trait2... ] \
[ Schema::Loader opts ] [ dsn user pass ] \
[ other connect_info args ]
=head1 DESCRIPTION
Helper for the DBIC Schema Models.
=head2 Arguments:
C<CatalystModelName> is the short name for the Catalyst Model class
being generated (i.e. callable with C<$c-E<gt>model('CatalystModelName')>).
C<MyApp::SchemaClass> is the fully qualified classname of your Schema,
which might or might not yet exist. Note that you should have a good
reason to create this under a new global namespace, otherwise use an
existing top level namespace for your schema class.
C<create=dynamic> instructs this Helper to generate the named Schema
class for you, basing it on L<DBIx::Class::Schema::Loader> (which
means the table information will always be dynamically loaded at
runtime from the database).
C<create=static> instructs this Helper to generate the named Schema
class for you, using L<DBIx::Class::Schema::Loader> in "one shot"
mode to create a standard, manually-defined L<DBIx::Class::Schema>
setup, based on what the Loader sees in your database at this moment.
A Schema/Model pair generated this way will not require
L<DBIx::Class::Schema::Loader> at runtime, and will not automatically
adapt itself to changes in your database structure. You can edit
the generated classes by hand to refine them.
C<traits> is the list of traits to apply to the model, see
L<Catalyst::Model::DBIC::Schema> for details.
C<Schema::Loader opts> are described in L</TYPICAL EXAMPLES> below.
C<connect_info> arguments are the same as what
DBIx::Class::Schema::connect expects, and are storage_type-specific.
For DBI-based storage, these arguments are the dsn, username,
password, and connect options, respectively. These are optional for
existing Schemas, but required if you use either of the C<create=>
options.
username and password can be omitted for C<SQLite> dsns.
Use of either of the C<create=> options requires L<DBIx::Class::Schema::Loader>.
=head1 TYPICAL EXAMPLES
Use DBIx::Class::Schema::Loader to create a static DBIx::Class::Schema,
and a Model which references it:
script/myapp_create.pl model CatalystModelName DBIC::Schema \
MyApp::SchemaClass create=static dbi:mysql:foodb myuname mypass
Same, with extra connect_info args
user and pass can be omitted for sqlite, since they are always empty
script/myapp_create.pl model CatalystModelName DBIC::Schema \
MyApp::SchemaClass create=static dbi:SQLite:foo.db \
AutoCommit=1 cursor_class=DBIx::Class::Cursor::Cached \
on_connect_do='["select 1", "select 2"]' quote_char='"'
If using a 2 character quote_char:
script/myapp_create.pl ... quote_char='[]'
B<ON WINDOWS COMMAND LINES QUOTING RULES ARE DIFFERENT>
In C<cmd.exe> the above example would be:
script/myapp_create.pl model CatalystModelName DBIC::Schema \
MyApp::SchemaClass create=static dbi:SQLite:foo.db \
AutoCommit=1 cursor_class=DBIx::Class::Cursor::Cached \
on_connect_do="[\"select 1\", \"select 2\"]" quote_char="\""
Same, but with extra Schema::Loader args (separate multiple values by commas):
script/myapp_create.pl model CatalystModelName DBIC::Schema \
MyApp::SchemaClass create=static db_schema=foodb components=Foo,Bar \
exclude='^(wibble|wobble)$' moniker_map='{ foo => "FOO" }' \
dbi:Pg:dbname=foodb myuname mypass
See L<DBIx::Class::Schema::Loader::Base> for a list of options
Create a dynamic DBIx::Class::Schema::Loader-based Schema,
and a Model which references it (B<DEPRECATED>):
script/myapp_create.pl model CatalystModelName DBIC::Schema \
MyApp::SchemaClass create=dynamic dbi:mysql:foodb myuname mypass
Reference an existing Schema of any kind, and provide some connection information for ->config:
script/myapp_create.pl model CatalystModelName DBIC::Schema \
MyApp::SchemaClass dbi:mysql:foodb myuname mypass
Same, but don't supply connect information yet (you'll need to do this
in your app config, or [not recommended] in the schema itself).
script/myapp_create.pl model ModelName DBIC::Schema My::SchemaClass
=cut
has helper => (is => 'ro', isa => 'Catalyst::Helper', required => 1);
has create => (is => 'rw', isa => CreateOption);
has args => (is => 'ro', isa => ArrayRef);
has traits => (is => 'rw', isa => ArrayRef);
has schema_class => (is => 'ro', isa => Str, required => 1);
has loader_args => (is => 'rw', isa => HashRef);
has connect_info => (is => 'rw', isa => HashRef);
has old_schema => (is => 'rw', isa => Bool, lazy_build => 1);
has components => (is => 'rw', isa => ArrayRef);
=head1 METHODS
=head2 mk_compclass
This is called by L<Catalyst::Helper> with the commandline args to generate the
files.
=cut
sub mk_compclass {
my ($package, $helper, $schema_class, @args) = @_;
my $self = $package->new(
helper => $helper,
schema_class => $schema_class,
args => \@args
);
$self->run;
}
sub BUILD {
my $self = shift;
my $helper = $self->helper;
my @args = @{ $self->args || [] };
$helper->{schema_class} = $self->schema_class;
@args = $self->_cleanup_args(\@args);
my ($traits_idx, $traits);
if (($traits_idx = firstidx { ($traits) = /^traits=(\S*)\z/ } @args) != -1) {
my @traits = split /,/ => $traits;
$self->traits(\@traits);
$helper->{traits} = '['
.(join ',' => map { qq{'$_'} } @traits)
.']';
splice @args, $traits_idx, 1, ();
}
if ($args[0] && $args[0] =~ /^create=(\S*)\z/) {
$self->create($1);
shift @args;
if (@args) {
$self->_parse_loader_args(\@args);
$helper->{loader_args} = $self->_build_helper_loader_args;
}
}
my $dbi_dsn_part;
if (first { ($dbi_dsn_part) = /^(dbi):/i } @args) {
die
qq{DSN must start with 'dbi:' not '$dbi_dsn_part' (case matters!)}
if $dbi_dsn_part ne 'dbi';
$helper->{setup_connect_info} = 1;
$helper->{connect_info} =
$self->_build_helper_connect_info(\@args);
$self->_parse_connect_info(\@args);
}
$helper->{generator} = ref $self;
$helper->{generator_version} = $VERSION;
}
=head2 run
Can be called on an instance to generate the files.
=cut
sub run {
my $self = shift;
if ($self->create eq 'dynamic') {
$self->_print_dynamic_deprecation_warning;
$self->_gen_dynamic_schema;
} elsif ($self->create eq 'static') {
$self->_gen_static_schema;
}
$self->_gen_model;
}
sub _parse_loader_args {
my ($self, $args) = @_;
my %loader_args = $self->_read_loader_args($args);
while (my ($key, $val) = each %loader_args) {
next if $key =~ /^(?:components|constraint|exclude)\z/;
$loader_args{$key} = $self->_eval($val);
die "syntax error for loader args key '$key' with value '$val': $@"
if $@;
}
my @components =
$self->_build_loader_components(delete $loader_args{components});
$self->components(\@components);
for my $re_opt (qw/constraint exclude/) {
$loader_args{$re_opt} = qr/$loader_args{$re_opt}/
if exists $loader_args{$re_opt};
}
tie my %result, 'Tie::IxHash';
%result = (
relationships => 1,
(%loader_args ? %loader_args : ()),
(!$self->old_schema ? (
use_namespaces => 1
) : ()),
(@components ? (
components => \@components
) : ())
);
$self->loader_args(\%result);
wantarray ? %result : \%result;
}
sub _read_loader_args {
my ($self, $args) = @_;
my %loader_args;
while (@$args && $args->[0] !~ /^dbi:/i) {
my ($key, $val) = split /=/, shift(@$args), 2;
if ($self->_is_struct($val)) {
$loader_args{$key} = $val;
} elsif ((my @vals = split /,/ => $val) > 1) {
$loader_args{$key} = \@vals;
} else {
$loader_args{$key} = $val;
}
}
wantarray ? %loader_args : \%loader_args;
}
sub _build_helper_loader_args {
my $self = shift;
my $args = $self->loader_args;
tie my %loader_args, 'Tie::IxHash';
while (my ($arg, $val) = each %$args) {
if (ref $val) {
$loader_args{$arg} = $self->_data_struct_to_string($val);
} else {
$loader_args{$arg} = qq{'$val'};
}
}
\%loader_args
}
sub _build_loader_components {
my ($self, $components) = @_;
my @components = $self->old_schema ? () : ('InflateColumn::DateTime');
if ($components) {
$components = [ $components ] if !ref $components;
push @components, @$components;
}
wantarray ? @components : \@components;
}
sub _build_helper_connect_info {
my ($self, $connect_info) = @_;
my @connect_info = @$connect_info;
my ($dsn, $user, $password) = $self->_get_dsn_user_pass(\@connect_info);
tie my %helper_connect_info, 'Tie::IxHash';
%helper_connect_info = (
dsn => qq{'$dsn'},
user => qq{'$user'},
password => qq{'$password'}
);
for (@connect_info) {
if (/^\s*{.*}\s*\z/) {
my $hash = $self->_eval($_);
die "Syntax errorr in connect_info hash: $_: $@" if $@;
my %hash = %$hash;
for my $key (keys %hash) {
my $val = $hash{$key};
if (ref $val) {
$val = $self->_data_struct_to_string($val);
} else {
$val = $self->_quote($val);
}
$helper_connect_info{$key} = $val;
}
next;
}
my ($key, $val) = split /=/, $_, 2;
if ($key eq 'quote_char') {
$helper_connect_info{$key} = length($val) == 1 ?
$self->_quote($val) :
$self->_data_struct_to_string([split //, $val]);
} else {
$helper_connect_info{$key} = $self->_quote_unless_struct($val);
}
}
\%helper_connect_info
}
sub _build_old_schema {
my $self = shift;
my @schema_pm = split '::', $self->schema_class;
$schema_pm[-1] .= '.pm';
my $schema_file =
File::Spec->catfile($self->helper->{base}, 'lib', @schema_pm);
if (-f $schema_file) {
my $schema_code = do { local (@ARGV, $/) = $schema_file; <> };
return 1 if $schema_code =~ /->load_classes/;
}
0;
}
sub _data_struct_to_string {
my ($self, $data) = @_;
local $Data::Dumper::Terse = 1;
local $Data::Dumper::Quotekeys = 0;
local $Data::Dumper::Indent = 0;
local $Data::Dumper::Useqq = 1;
return Data::Dumper->Dump([$data]);
}
sub _get_dsn_user_pass {
my ($self, $connect_info) = @_;
my $dsn = shift @$connect_info;
my ($user, $password);
if ($dsn =~ /sqlite/i) {
($user, $password) = ('', '');
shift @$connect_info while @$connect_info and $connect_info->[0] eq '';
} else {
($user, $password) = splice @$connect_info, 0, 2;
}
($dsn, $user, $password)
}
sub _parse_connect_info {
my ($self, $connect_info) = @_;
my @connect_info = @$connect_info;
my ($dsn, $user, $password) = $self->_get_dsn_user_pass(\@connect_info);
tie my %connect_info, 'Tie::IxHash';
@connect_info{qw/dsn user password/} = ($dsn, $user, $password);
for (@connect_info) {
if (/^\s*{.*}\s*\z/) {
my $hash = $self->_eval($_);
die "Syntax errorr in connect_info hash: $_: $@" if $@;
%connect_info = (%connect_info, %$hash);
next;
}
my ($key, $val) = split /=/, $_, 2;
if ($key eq 'quote_char') {
$connect_info{$key} = length($val) == 1 ? $val : [split //, $val];
} elsif ($key =~ /^(?:name_sep|limit_dialect)\z/) {
$connect_info{$key} = $val;
} else {
$connect_info{$key} = $self->_eval($val);
}
die "syntax error for connect_info key '$key' with value '$val': $@"
if $@;
}
$self->connect_info(\%connect_info);
\%connect_info
}
sub _is_struct {
my ($self, $val) = @_;
return $val =~ /^\s*[[{]/;
}
sub _quote {
my ($self, $val) = @_;
return 'q{'.$val.'}';
}
sub _quote_unless_struct {
my ($self, $val) = @_;
$val = $self->_quote($val) if not $self->_is_struct($val);
return $val;
}
sub _eval {
my ($self, $code) = @_;
return $code if looks_like_number $code;
return $code if $code =~ m{^[\w;:/]*\z};
return eval "{no strict; $code}";
}
sub _gen_dynamic_schema {
my $self = shift;
my $helper = $self->helper;
my @schema_parts = split(/\:\:/, $self->schema_class);
my $schema_file_part = pop @schema_parts;
my $schema_dir = File::Spec->catfile(
$helper->{base}, 'lib', @schema_parts
);
my $schema_file = File::Spec->catfile(
$schema_dir, $schema_file_part . '.pm'
);
$helper->mk_dir($schema_dir);
$helper->render_file('schemaclass', $schema_file);
}
sub _gen_static_schema {
my $self = shift;
die "cannot load schema without connect info" unless $self->connect_info;
my $helper = $self->helper;
my $schema_dir = File::Spec->catfile($helper->{base}, 'lib');
eval { Class::MOP::load_class('DBIx::Class::Schema::Loader') };
die "Cannot load DBIx::Class::Schema::Loader: $@" if $@;
DBIx::Class::Schema::Loader->import(
"dump_to_dir:$schema_dir", 'make_schema_at'
);
make_schema_at(
$self->schema_class,
$self->loader_args,
[$self->connect_info]
);
}
sub _gen_model {
my $self = shift;
my $helper = $self->helper;
$helper->render_file('compclass', $helper->{file} );
}
sub _print_dynamic_deprecation_warning {
warn <<EOF;
************************************ WARNING **********************************
* create=dynamic is DEPRECATED, please use create=static instead. *
*******************************************************************************
EOF
print "Continue? [y/n]: ";
chomp(my $response = <STDIN>);
exit 0 if $response =~ /^n(o)?\z/;
}
sub _cleanup_args {
my ($self, $args) = @_;
# remove blanks, ie. someoned doing foo \ bar
my @res = grep !/^\s+\z/, @$args;
# remove leading whitespace, ie. foo \ bar
s/^\s*// for @res;
@res
}
=head1 SEE ALSO
General Catalyst Stuff:
L<Catalyst::Manual>, L<Catalyst::Test>, L<Catalyst::Request>,
L<Catalyst::Response>, L<Catalyst::Helper>, L<Catalyst>,
Stuff related to DBIC and this Model style:
L<DBIx::Class>, L<DBIx::Class::Schema>,
L<DBIx::Class::Schema::Loader>, L<Catalyst::Model::DBIC::Schema>
=head1 AUTHOR
Brandon L Black, C<blblack@gmail.com>
Contributors:
Rafael Kitover, C<rkitover at cpan.org>
=head1 LICENSE
This library is free software, you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
1;
__DATA__
=begin pod_to_ignore
__schemaclass__
package [% schema_class %];
use strict;
use base qw/DBIx::Class::Schema::Loader/;
__PACKAGE__->loader_options(
[%- FOREACH key = loader_args.keys %]
[% key %] => [% loader_args.${key} %],
[%- END -%]
);
=head1 NAME
[% schema_class %] - L<DBIx::Class::Schema::Loader> class
=head1 SYNOPSIS
See L<[% app %]>
=head1 DESCRIPTION
Dynamic L<DBIx::Class::Schema::Loader> schema for use in L<[% class %]>
=head1 GENERATED BY
[% generator %] - [% generator_version %]
=head1 AUTHOR
[% author.replace(',+$', '') %]
=head1 LICENSE
This library is free software, you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
1;
__compclass__
package [% class %];
use strict;
use base 'Catalyst::Model::DBIC::Schema';
__PACKAGE__->config(
schema_class => '[% schema_class %]',
[% IF traits %]traits => [% traits %],[% END %]
[% IF setup_connect_info %]connect_info => {
[%- FOREACH key = connect_info.keys %]
[% key %] => [% connect_info.${key} %],
[%- END -%]
}[% END %]
);
=head1 NAME
[% class %] - Catalyst DBIC Schema Model
=head1 SYNOPSIS
See L<[% app %]>
=head1 DESCRIPTION
L<Catalyst::Model::DBIC::Schema> Model using schema L<[% schema_class %]>
=head1 GENERATED BY
[% generator %] - [% generator_version %]
=head1 AUTHOR
[% author.replace(',+$', '') %]
=head1 LICENSE
This library is free software, you can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
1;
__END__
# vim:sts=4 sw=4: