Active Record¶

Model register¶

class instead of instance in Pool using metaclass MetaPool

trytond calls: module.register()

def register():
    Pool.register(
        Party,
        module='party', type_='model')

Model attributes¶

• _description and _reset_colums removed
• _name -> __name__
• __init__ -> __setup__
• _rpc -> __rpc__

RPC¶

RPC(readonly=True, instantiate=None, result=None)

• readonly: transaction mode
• instantiate: position to instanciate
• result: transform method

Model fields¶

__setup__ deepcopy all fields

More objects¶

No more dictionary values

Before

def on_change_product(self, values):
    product_obj = pool.get('product.product')
    product = product_obj.browse(values['product'])
    return {
        'description': product.rec_name,
        }

After

def on_change_product(self):
    return {
        'description': self.product.rec_name,
        }

default values¶

@classmethod
def default_active(cls):
    return True

Function getter¶

instance method

def get_rec_name(self, name):
    return '%s: %s' % (
        self.rec_name, self.party.rec_name)

but also class method

def get_amount(cls, records, name):
    cursor.execute('SELECT id, SUM(...)',
        map(int, records))
    return dict(cursor.fetchall())

Bonus¶

merge on_change_with with getter

currency_digits = fields.Function(fields.Integer('Digits',
        on_change_with=['currency']),
    'on_change_with_currency_digits')

def on_change_with_currency_digits(self, name=None):
    if self.currency:
        return self.currency.digits
    return 2

Unified API¶

• Always list of instances (except browse, read)
• write and delete returns nothing
• search returns list of instances

Cache¶

Explicit LRU Cache management

class Cache(object):

    def get(self, key, default=None):
        ...

    def set(self, key, value):
        ...

    def clear(self):
        ...

Wizard¶

The instance is the session

Report¶

TODO

Sequence¶

Problem: sequence field increase every time

Solution¶

• default_sequence removed
• empty sequence at the end

order_field='(%(table)s.sequence IS NULL) %(order)s, ' \
    '%(table)s.sequence %(order)s'

Time Format¶

• on Time and DateTime
• example drop second:

time = fields.Time(string='Time', format='%H:%M')

Reference field for xxx2Many¶

size attribute¶

• added to One2Many & Many2Many
• Dynamic: PYSON

create/delete field access¶

• Only for relation fields

Merge all kinds of button¶

• New ModelView.button_action(action)
• button == method
• launch action: return action_id

View in XML file¶

• in module/view directory
• view name is the file name
• editor with rng validation
• change automatically reloaded

Pre-validation¶

• validation without DB save
• to activate on view
• client calls for One2Many