ploneconf2011 - how to build erp application while having fun

How to build complex

web applications having fun?





Andrew MleczkoSoftware Integrator

Ferrara (Italy)

amleczko

[email protected]

author

mailto:[email protected]?subject=






author


Ferrara (Italy)

amleczko

[email protected]







Ferrara

author


Ferrara (Italy)

amleczko

[email protected]







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

FAST

“Roughly 5000 lines of code”

SMALL

FAST

STABLE


SMALL

TESTED

FAST

STABLE


“100% statement coverage via unit and

integration tests”

SMALL

DOCUMENTED

TESTED

FAST

STABLE


“100% statement coverage via unit and

integration tests”

“Literally nothingin Pyramid

is undocumented”

★ Debug Toolbar

★ Flexible authentication

and authorization

★ Tweens - a bit like WSGI

middleware

★ Decorator-based configuration

from 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 configuration

from pyramid.config import Configurator

if __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

CRM

Sales

1 2 3 4 5

Warehouse

E-commerce

Support

paperless saleCRM

Sales

1

2

3

4

5

Warehouse

E-commerce

Support

paperless saleCRM

Sales

1

2

3

4

5

Warehouse

E-commerce

Support

★ Customer’s management (satisfaction, order status, etc.)

★ Reports (machine statistics, etc.)

★ Campaigns

paperless saleCRM

Sales

1

2

3

4

5

Warehouse

E-commerce

Support

★ Sales network management

★ Invoicing / accountancy

★ Revenue counter

★ Discount management

paperless saleCRM

Sales

1

2

3

4

5

Warehouse

E-commerce

Support

★ Catalog management

★ Warehouse management

★ Logistic tracking

★ Online shop (for beverages and accessories)

★ Machine configurator (interactive wizard)

★ Online payments

paperless saleCRM

Sales

1

2

3

4

5

Warehouse

E-commerce

Support

paperless saleCRM

Sales

1

2

3

4

5

Warehouse

E-commerce

Support

★ Machine maintenance (filter change)

★ Emergency services

★ Order / installation process

Support

CRM

Sales

Warehouse

E-commerce

paperless sale

Support

CRM

Sales

Warehouse

E-commerce

Intranet Extranet

paperless sale

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

Arch i tectural dec i s ions

★ 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

why ?

and ?

★ The Best CMS ever

★ easy to integrate with

other Python frameworks

★ almost 2000 addons

★ Diazo (plone.app.theming)

and ?

★ Poi





★ PAS (PluggableAuthService)

★ Poi

★ Diazo (plone.app.theming)

and ?





★ PAS (PluggableAuthService)

Integrat ion

SQ LA l c hemy

PostgreSQL

aeterna.models

SQ LA l c hemy

au then t i c a t ion - au thor iza t ion

auth storage

au then t i c a t ion - au thor iza t ionR

equ

est

PostgreSQL

repoze.who

pas.plugins.sa

auth storage


★ users

★ groups

★ roles

PostgreSQL

auth storage


★ users

★ groups

★ roles

PostgreSQL

single-sign-on

★ plone.session

★ repoze.who.plugins.auth_tkt

mod_auth_tkt

bu i l dout

[intranet-plone]

recipe = plone.recipe.zope2instance

eggs =

${intranet-plone:eggs} aeterna.models

[intranet-pyramid]

recipe = zc.recipe.egg

eggs =

${intranet-pyramid:eggs} aeterna.models

T he b ig p i c ture

PostgreSQL

ZODB

Ap

ach

e

repoze.who

pas.plugins.sa

beaker

intranetextranet

T he b ig p i c ture

PostgreSQL

ZODB

Ap

ach

e

repoze.who

pas.plugins.sa

beaker

why not other compet i tors?

django: no!★ less code more magic

★ not so flexible

(specification is growing)

★ using SQLAlchemy within

could be tricky

drupal : no!★ security problems

(370 CVE entries)

★ integration is more difficult

(PHP vs. Python)

★ missing features

workflow, complex ACL, etc.

openerp : no!★ quite complex: CRM, sales,

accounting and much more

★ not enough time

to fully investigate it

★ not a generic framework

results

What matters?

Proper Tools

and a good team

★ 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

★ Minimal configuration:

pyramid_formalchemy

def main(global_config, **settings):

engine = engine_from_config(settings, 'sqlalchemy.') initialize_sql(engine) config = Configurator(settings=settings)

# pyramid_formalchemy's configuration config.include('pyramid_formalchemy')

# register an admin UI config.formalchemy_admin('/admin', package='pyramidapp')

return config.make_wsgi_app()

★ Minimal configuration:

pyramid_formalchemy

★ Events subscriptions:

pyramid_formalchemy

@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)

★ Events subscriptions:

pyramid_formalchemy

pyramid_formalchemy

★ demohttp://docs.formalchemy.org/demo/admin

★ documentationhttp://docs.formalchemy.org/pyramid_formalchemy

★ downloadhttp://pypi.python.org/pypi/pyramid_formalchemy

http://docs.formalchemy.org/pyramid_formalchemy

http://docs.formalchemy.org/pyramid_formalchemy

★ a pyramid_formalchemy plugin

★ based on twitter bootstrap

★ integrated with fanstatic

★ released on pypi

http://pypi.python.org/pypi/fa.bootstrap

fa.bootstrap

fa.bootstrap

Quest ions?

★ 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/

Credits

http://flickr.com/photos/mleczko




























ploneconf2011 - how to build erp application while having fun

Technology

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withother python frameworks

best cms

addons diazo

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configfrom pyramid

zcafrom pyramid

newrequestfrom pyramid