PloneConf2011 - How to build ERP application while having fun

How to build complexweb applications having fun?

author Andrew Mleczko Software Integrator Ferrara (Italy) amleczko amleczko@redturtle.it

author Ferrara Andrew Mleczko Software Integrator Ferrara (Italy) amleczko amleczko@redturtle.it

the team

WHY this talk?

My Reasons to be here★ Building complex web applications should be fun★ to promote

SMALL “Roughly 5000 lines of code”

SMALL “Roughly 5000 lines of code”FAST

SMALL “Roughly 5000 lines of code”FASTSTABLE

SMALL “Roughly 5000 lines of code”FAST “100% statementSTABLE coverage via unit andTESTED integration tests”

SMALL “Roughly 5000 lines of code”FAST “100% statementSTABLE coverage via unit andTESTED integration tests”DOCUMENTED “Literally nothing in Pyramid is undocumented”

★ Debug Toolbar★ Flexible authentication and authorization★ Tweens - a bit like WSGI middleware

★ Decorator-based configurationfrom pyramid.view import view_configfrom pyramid.response import Response@view_config(route_name=fred)def fred_view(request): return Response(fred)

★ Event system (based on ZCA)from pyramid.events import NewRequestfrom pyramid.events import subscriber@subscriber(NewRequest)def mysubscriber(event): event.request.foo = 1

★ Extendable configurationfrom pyramid.config import Configuratorif __name__ == __main__: config = Configurator() config.include(pyramid_formalchemy)

the project

The Customer★ .★ Born as a startup★ Offices in US

Water today★ U.S. - the largest consumer market for bottled water in the world★ in 2011, the market is forecast to have a value of $86,421.2 billion “Bottled water has become the second largest commercial beverage category”

project requirements

paperless sale

paperless sale Sales E-commerce1 2 3 4 5 CRM Warehouse Support

paperless sale1 CRM2 Sales3 Warehouse4 E-commerce5 Support

paperless sale1 CRM ★ Customer’s management (satisfaction, order status, etc.)2 Sales ★ Reports (machine statistics, etc.)3 Warehouse ★ Campaigns4 E-commerce5 Support

paperless sale1 CRM ★ Sales network management ★ Invoicing / accountancy2 Sales ★ Revenue counter3 Warehouse ★ Discount management4 E-commerce5 Support

paperless sale1 CRM ★ Catalog management ★ Warehouse management2 Sales ★ Logistic tracking3 Warehouse4 E-commerce5 Support

paperless sale1 CRM ★ Online shop (for beverages and accessories)2 Sales ★ Machine configurator (interactive wizard)3 Warehouse ★ Online payments4 E-commerce5 Support

paperless sale1 CRM ★ Machine maintenance (filter change)2 Sales ★ Emergency services ★ Order / installation process3 Warehouse4 E-commerce5 Support

paperless sale Warehouse Support CRM E-commerce Sales

paperless sale Intranet Extranet Warehouse Support CRM E-commerce Sales

Totally paperless ERP

project gotchas

project gotchas★ Requirements are not rock solid (it’s a startup) - project will grow with the customer★ Customer is in U.S. - planning regular meetings is essential★ We need to find new framework for ERP part★ Only 5 months to delivery

Arc hi t e ct u ral dec i si ons

why ?★ architecture is not so far away from Zope★ it supports SQLAlchemy out of the box★ great documentation and active community★ add’s some fresh air to your architecture

why ?★ pyramid_formalchemy CRUD★ easy pluggable widgets ★ Multi-upload ★ Metric units ★ Autocomplete ★ Multi-relation★ 75% jQuery code

and ?★ The Best CMS ever★ easy to integrate with other Python frameworks★ almost 2000 addons

and ?★ The Best CMS ever★ easy to integrate with other Python frameworks★ almost 2000 addons ★ Diazo (plone.app.theming) ★ Poi ★ PAS (PluggableAuthService)

I nt eg r at i o n

SQL A lchemy

SQL A lchemy aeterna.models PostgreSQL

authentication - authorization

authentication - authorization auth storage Request pas.plugins.sa repoze.who PostgreSQL

authentication - authorization auth storage ★ users ★ groups ★ roles PostgreSQL

authentication - authorization auth storage single-sign-on ★ users ★ plone.session ★ repoze.who.plugins.auth_tkt ★ groups ★ roles mod_auth_tkt PostgreSQL

buildout[intranet-plone]recipe = plone.recipe.zope2instanceeggs = ${intranet-plone:eggs} aeterna.models[intranet-pyramid]recipe = zc.recipe.eggeggs = ${intranet-pyramid:eggs} aeterna.models

The big picture pas.plugins. sa ZODBApache beaker PostgreSQL repoze. who

The big picture extranet pas.plugins. sa ZODBApache beaker PostgreSQL intranet repoze. who

why not o t h er c o mpet i t o rs?

d j ang o : no!★ less code more magic★ not so flexible (specification is growing)★ using SQLAlchemy within could be tricky

d r u pal: no!★ security problems (370 CVE entries)★ integration is more difficult (PHP vs. Python)★ missing features workflow, complex ACL, etc.

o pen erp : no!★ quite complex: CRM , sales, accounting and much more★ not enough time to fully investigate it★ not a generic framework

results

What mat t ers?

Proper Tools

and a g o o d t eam

★ Prototyping - it’s always a lot of fun, but... ★ be aware of The Learning Curve Effect★ Collecting specification and keeping docs up-to-date (a real on-going process)

check this out!

pyramid_formalchemy★ started by gawel (Gaël Pasgrimaud) and supported by★ using SQLAlchemy, Formalchemy and fanstatic★ available on pypi more then 1720 downloads so far

pyramid_formalchemy★ Lots of improvements during by ★ events hooks ★ view and action customizations ★ i18n support ★ paster templates ★ fanstatic integration

pyramid_formalchemy★ Minimal configuration:

pyramid_formalchemy★ Minimal configuration:def main(global_config, **settings): engine = engine_from_config(settings, sqlalchemy.) initialize_sql(engine) config = Configurator(settings=settings) # pyramid_formalchemys configuration config.include(pyramid_formalchemy) # register an admin UI config.formalchemy_admin(/admin, package=pyramidapp) return config.make_wsgi_app()

pyramid_formalchemy★ Events subscriptions:

pyramid_formalchemy★ Events subscriptions:@events.subscriber([User, events.IBeforeEditRenderEvent])def before_user_edit(context, event): fs = event.kwargs[fs] # add roles_manage field for manager: if not has_permission(manage, event.request): fs.append(fs.roles_manage) # set TinyMCE as a renderer for biography field: fs.biography.set(renderer=tinymce)

pyramid_formalchemy★ demo http://docs.formalchemy.org/demo/admin★ documentation http://docs.formalchemy.org/pyramid_formalchemy★ download http://pypi.python.org/pypi/pyramid_formalchemy

fa.bootstrap ★ a pyramid_formalchemy plugin ★ based on twitter bootstrap ★ integrated with fanstatic ★ released on pypi http://pypi.python.org/pypi/fa.bootstrap

fa.bootstrap

Qu est i ons?

Credits★ http://flickr.com/photos/mleczko★ http://www.melaiphone.com/★ http://static.iphoneitalia.com★ http://www.theapplelounge.com★ http://www.nonconvenzionale.com★ http://craziestgadgets.com/★ http://obsessivelystitching.blogspot.com/★ http://theclockblog.blogspot.com/★ http://www.scatoladeigiochi.altervista.org/★ http://wallpapers.brothersoft.com/★ www.prisionerodelpixel.com★ http://jawaexpress.com/★ http://mikehenneke.mvourtown.com/★ http://android-apps.com/

http://simple-is-better.com	92
http://www.enjcomunidad.org	4
http://paper.li	4
http://localhost	3
http://www.simple-is-better.com	3
http://twitter.com	1
http://www.slideshare.net	1
http://us-w1.rockmelt.com	1
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PloneConf2011 - How to build ERP application while having fun

by Andrew Mleczko on Nov 04, 2011

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PloneConf2011 - How to build ERP application while having fun — Presentation Transcript