OpenERP and Perl
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OpenERP and Perl Jon Allen (JJ) – [email protected]
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OpenERP is a very flexible open-source ERP system, which handles accounting, CRM, sales, purchasing, manufacturing, and many other business functions. It is written in Python but has an XML-RPC API so we can control all of its functions from Perl. However, despite OpenERP having an object-oriented architecture the API is quite 'low-level', and using it is a very different experience compared to having an ORM like DBIx::Class. OpenERP::OOM (Object to Object Mapper) bridges this gap, letting us use Moose classes to represent the OpenERP schema. As with an ORM, the schema and object classes can be extended with our own methods and functions. With this approach the underlying interface to OpenERP becomes transparent - everything is done with Perl - which means we can write Catalyst models, extend OpenERP with CPAN modules, and use all of OpenERP's functions from our Perl code. Presented at the YAPC Europe 2012 conference in Frankfurt, Germany.
Transcript of OpenERP and Perl
OpenERP and Perl Jon Allen (JJ) – [email protected]
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OpenERP
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enterprise"resource"planning
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?
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core business"applications
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sales crm"manufacturing"
purchasing
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accounting
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integrated accounting
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Perl?
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OpenERP
website
intranet
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api
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XML-RPC
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single"requests
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stateless
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object"model
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relationships
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one2manyres.partner
res.partner.address
res.companymany2one
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database
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ORM
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object"relational"mapper
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OOM
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object to"object"
mapper
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OpenERP::OOM
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Moose
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object model
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OpenERP
Schema
Class Class Class
Object Object
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# Code layout for module using OpenERP::OOM
lib/ MyApp.pm # Schema definition MyApp/ Class/ # Class definitions Company.pm Partner.pm Object/ # Object definitions Company.pm Partner.pm
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schema
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# MyApp.pm
package MyApp;
use Moose;extends 'OpenERP::OOM::Schema';
1;
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connection
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use MyApp;
my $schema = MyApp->new( openerp_connect => { host => 'localhost', dbname => 'jj_test_1', username => 'admin', password => 'admin', },);
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classes
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# MyApp/Class/Company.pm
package MyApp::Class::Company;use OpenERP::OOM::Class;
object_type 'MyApp::Object::Company';
# Class methods go here
1;
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objects
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fields
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relationships
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partner"has many"addresses
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package MyApp::Object::Partner;use OpenERP::OOM::Object;
openerp_model 'res.partner';has 'name' => (isa=>'Str', is=>'rw');
relationship 'addresses' => ( key => 'address', # OpenERP field type => 'one2many', # OpenERP type class => 'PartnerAddress',);
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object "creation
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# Schema -> Class -> Class Method
my $partner = $schema->class('Partner')-> create({ name => 'JJ' });
# Updates
$partner->update({name => 'Jon Allen'});say $partner->name;
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search
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# Single result
my $jj = $schema->class('Partner')-> find(['name' => '=' => 'JJ']);
# Multiple results
my @partners = $schema->class('Partner')-> search(['name' => 'like' => 'J']);
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related"objects
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$partner->create_related( 'addresses', { name => '...', street => '...', city => '...', });
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add"methods
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extend OpenERP
objects
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external"data sources
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DBIx::Class
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not just"data
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OpenERP"methods
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workflows
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integrated"accounting
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my $po = $schema->class('PurchaseOrder')-> search([ ... ]);
$po->update({ ... });
# Approve purchase order$po->execute_workflow('purchase_confirm');
# Print (returns PDF)$po->get_report('purchase.order');
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application logic = Perl
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application"data = DBIC
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generic logic "= OpenERP
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generic data "= OpenERP
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many uses
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Catalyst model
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18 months"development
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3 commercial"deployments
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open sourced"today
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http://search.cpan.org/dist/OpenERP-OOM
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questions?
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