Inheritence Problem
graemeharnish at gmail.com
graemeharnish at gmail.com
Sat Nov 12 21:47:46 EST 2005
Hello. I'm trying to mod an open source app called TinyERP and inherit
from a parent object, and in essence change how _column is defined. I
found sample code of:
class custom_product(osv.osv):
__inherits__ = "product.product"
__name__ = "product.product"
_columns = {
'color' : fields.many2one('color','Color'),
'size': fields.many2one('size','Size'),
}
custom_product()
This doesn't work. It does seem to override it, however, it seems to
replace the function. How can I essentially redefine the _columns var?
Thanks, Graeme
The main class looks like this:
from osv import fields
from osv import osv
from osv import orm
#----------------------------------------------------------
# UOM
#----------------------------------------------------------
class product_uom_categ(osv.osv):
_name = 'product.uom.categ'
_description = 'Product uom categ'
_columns = {
'name': fields.char('Name', size=64, required=True),
}
product_uom_categ()
class product_uom(osv.osv):
_name = 'product.uom'
_description = 'Product Unit of Measure'
_columns = {
'name': fields.char('Name', size=64, required=True),
'category_id': fields.many2one('product.uom.categ', 'UOM Category',
required=True, ondelete='cascade'),
'factor': fields.float('Factor', required=True),
'rounding': fields.integer('Rounding Precision', required=True),
'active': fields.boolean('Active')
}
_defaults = {
'factor': lambda x,y,z: 1.0,
'active': lambda x,y,z: 1,
'rounding': lambda x,y,z: 2,
}
def _compute_qty(self, cr, uid, uom_id, qty):
if not uom_id or not qty:
return qty
f = self.read(cr, uid, [uom_id], ['factor','rounding'])[0]
return int(qty / f['factor'])
def _compute_price(self, cr, uid, uom_id, qty):
if not uom_id or not qty:
return qty
f = self.read(cr, uid, [uom_id], ['factor','rounding'])[0]
return round(qty * f['factor'], f['rounding'])
product_uom()
#----------------------------------------------------------
# Categories
#----------------------------------------------------------
class product_category(osv.osv):
_name = "product.category"
_description = "Product Category"
_columns = {
'name': fields.char('Name', size=64, required=True),
'parent_id': fields.many2one('product.category','Parent Category'),
'child_id': fields.one2many('product.category', 'parent_id',
string='Childs Categories')
}
def child_get(self, cr, uid, ids):
return [ids]
product_category()
#----------------------------------------------------------
# Products
#----------------------------------------------------------
class product_template(osv.osv):
_name = "product.template"
_description = "Product Template"
_columns = {
'name': fields.char('Name', size=64, required=True, translate=True),
'description': fields.text('Description', translate=True),
'description_purchase': fields.text('Purchase Description',
translate=True),
'description_sale': fields.text('Sale Description', translate=True),
'name_ids': fields.one2many('product.template.name', 'template_id',
'Names for Partners'),
'type': fields.selection([('product','Stockable
Product'),('service','Service')], 'Product Type', required=True),
'supply_method':
fields.selection([('produce','Produce'),('buy','Buy')], 'Supply
method', required=True),
'seller_id': fields.many2one('res.partner', 'Default Supplier'),
'seller_delay': fields.float('Supplier lead time'),
'sale_delay': fields.float('Procurement lead time'),
'seller_ids': fields.many2many('res.partner',
'product_product_supplier', 'product_id','partner_id','Alternative
Suppliers'),
'manufacturer' : fields.char('Manufacturer', size=64),
'manufacturer_pname' : fields.char('Manufacturer product name',
size=64),
'manufacturer_pref' : fields.char('Manufacturer product code',
size=64),
'procure_method': fields.selection([('make_to_stock','Make to
Stock'),('make_to_order','Make to Order')], 'Procure Method',
required=True),
'rental': fields.boolean('Rentable product'),
'categ_id': fields.many2one('product.category','Category',
required=True),
'list_price': fields.float('List Price'),
'volume': fields.float('Volume'),
'weight': fields.float('Weight'),
'cost_method': fields.selection([('standard','Standard Price'),
('pmp','PMP (Not implemented!)')], 'Costing Method', required=True),
'standard_price': fields.float('Standard Price', required=True),
'limit_price': fields.float('Limit Price'),
'warranty': fields.float('Warranty (months)'),
'sale_ok': fields.boolean('Can be sold'),
'purchase_ok': fields.boolean('Can be Purchased'),
'taxes_id': fields.many2many('account.tax', 'product_taxes_rel',
'prod_id', 'tax_id', 'Product Taxes'),
'uom_id': fields.many2one('product.uom', 'Default UOM',
required=True),
'uom_po_id': fields.many2one('product.uom', 'Purchase UOM',
required=True),
'state': fields.selection([('draft', 'In
Development'),('sellable','Sellable'),('end','End of
lifecycle'),('obsolete','Obsolete')], 'State'),
}
_defaults = {
'type': lambda x,y,z: 'product',
'list_price': lambda x,y,z: 1,
'cost_method': lambda x,y,z: 'standard',
'supply_method': lambda x,y,z: 'buy',
'standard_price': lambda x,y,z: 1,
'limit_price': lambda x,y,z: 1,
'sale_ok': lambda x,y,z: 1,
'sale_delay': lambda x,y,z: 7,
'purchase_ok': lambda x,y,z: 1,
'procure_method': lambda x,y,z: 'make_to_stock',
'specific_bom': lambda x,y,z: False,
'specific_routing': lambda x,y,z: False,
}
# TODO: redefine name_get & name_search for product.template.name
def name_get(self, cr, user, ids, context={}):
if 'partner_id' in context:
pass
return orm.orm.name_get(self, cr, user, ids, context)
product_template()
class product_template_name(osv.osv):
_name = "product.template.name"
_description = "Product Template"
_columns = {
'name': fields.char('Product Name', size=64, required=True),
'code': fields.char('Product Code', size=32),
'partner_id': fields.many2one('res.partner', 'Partner',
ondelete='cascade'),
'template_id': fields.many2one('product.template', 'Product
Template', ondelete='cascade'),
}
product_template_name()
class product_product(osv.osv):
def _product_price(self, cr, uid, ids, name, arg, context={}):
res = {}
quantity = context.get('quantity', 1)
pricelist = context.get('pricelist', False)
if pricelist:
for id in ids:
price =
self.pool.get('product.pricelist').price_get(cr,uid,[pricelist], id,
quantity, 'list')[pricelist]
res[id] = price
for id in ids:
res.setdefault(id, 0.0)
if 'uom' in context:
for id in ids:
res[id] = self.pool.get('product.uom')._compute_price(cr, uid,
context['uom'], res[id])
return res
def _product_virtual_available(self, cr, uid, ids, name, arg,
context={}):
res = {}
if ('shop' in context) and context['shop']:
cr.execute('select warehouse_id from sale_shop where id=%d',
(int(context['shop']),))
res = cr.fetchone()
if res:
context['warehouse'] = res[0]
if context.get('warehouse',False):
cr.execute('select lot_stock_id from stock_warehouse where id=%d',
(int(context['warehouse']),))
res = cr.fetchone()
context['location'] = res[0]
if context.get('location',False):
res = self.pool.get('stock.location')._product_virtual_get(cr, uid,
context['location'], ids)
for id in ids:
res.setdefault(id, 0)
if 'uom' in context:
for id in ids:
res[id] = self.pool.get('product.uom')._compute_qty(cr, uid,
context['uom'], res[id])
return res
def _product_qty_available(self, cr, uid, ids, name, arg, context={}):
res = {}
if 'shop' in context:
cr.execute('select warehouse_id from sale_shop where id=%d',
(int(context['shop']),))
res = cr.fetchone() or {}
if res:
context['warehouse'] = res[0]
if context.get('warehouse',False):
cr.execute('select lot_stock_id from stock_warehouse where id=%d',
(int(context['warehouse']),))
res = cr.fetchone() or {}
if res:
context['location'] = res[0]
if context.get('location',False):
res = self.pool.get('stock.location')._product_get(cr, uid,
context['location'], ids) or {}
for id in ids:
res.setdefault(id, 0)
if 'uom' in context:
for id in ids:
res[id] = self.pool.get('product.uom')._compute_qty(cr, uid,
context['uom'], res[id])
return res
def _product_lst_price(self, cr, uid, ids, name, arg, context={}):
res = {}
for p in self.browse(cr, uid, ids):
res[p.id] = p.list_price
for id in ids:
res.setdefault(id, 0)
if 'uom' in context:
for id in ids:
res[id] = self.pool.get('product.uom')._compute_price(cr, uid,
context['uom'], res[id])
return res
def _get_partner_code_name(self, cr, uid, ids, product_id,
partner_id):
product = self.browse(cr, uid, [product_id])[0]
for name in product.name_ids:
if name.partner_id.id == partner_id:
return {'code' : name.code, 'name' : name.name}
return {'code' : product.default_code, 'name' : product.name}
def _product_code(self, cr, uid, ids, name, arg, context={}):
res = {}
for p in self.browse(cr, uid, ids):
res[p.id] = self._get_partner_code_name(cr, uid, [], p.id,
context.get('partner_id', None))['code']
return res
def _product_partner_ref(self, cr, uid, ids, name, arg, context={}):
res = {}
for p in self.browse(cr, uid, ids):
res[p.id] = self._get_partner_code_name(cr, uid, [], p.id,
context.get('partner_id', None))['name']
return res
_defaults = {
'active': lambda x,y,z: 1
}
_name = "product.product"
_description = "Product"
_table = "product_product"
_inherits = {'product.template': 'product_tmpl_id'}
_columns = {
'qty_available': fields.function(_product_qty_available, method=True,
type='integer', string='Real Stock'),
'virtual_available': fields.function(_product_virtual_available,
method=True, type='integer', string='Virtual Stock'),
'price': fields.function(_product_price, method=True, type='float',
string='Customer Price'),
'lst_price' : fields.function(_product_lst_price, method=True,
type='float', string='List price'),
'code': fields.function(_product_code, method=True, type='char',
string='Code'),
'partner_ref' : fields.function(_product_partner_ref, method=True,
type='char', string='Customer ref'),
'default_code' : fields.char('Code', size=64),
'active': fields.boolean('Active'),
'variants': fields.char('Variants', size=64),
'list_price_margin': fields.float('List Price Margin'),
'list_price_extra': fields.float('List Price Extra'),
'standard_price_margin': fields.float('Standard Price Margin'),
'standard_price_extra': fields.float('Standard Price Extra'),
'limit_price_margin': fields.float('Limit Price Margin'),
'limit_price_extra': fields.float('Limit Price Extra'),
'product_tmpl_id': fields.many2one('product.template', 'Product
Template', required=True),
}
def on_order(self, cr, uid, ids, orderline, quantity):
pass
def name_get(self, cr, user, ids, context={}):
if not len(ids):
return []
def _name_get(d):
name = self._product_partner_ref(cr, user, [d['id']], '', '',
context)[d['id']]
code = self._product_code(cr, user, [d['id']], '', '',
context)[d['id']]
if code:
name = '[%s] %s' % (code,name)
if d['variants']:
name = name + ' - %s' % (d['variants'],)
return (d['id'], name)
result = map(_name_get, self.read(cr, user, ids, ['variants']))
return result
def name_search(self, cr, user, name, args=[], operator='ilike',
context={}):
ids = self.search(cr, user, [('name',operator,name)]+ args)
ids += self.search(cr, user, [('default_code','=',name)]+ args)
return self.name_get(cr, user, ids)
def price_get(self, cr, uid, ids, ptype='list'):
result = self.read(cr, uid, ids)
result2 = {}
for res in result:
result2[res['id']] =
(res[ptype+'_price']*(1.0+(res[ptype+'_price_margin'] or
0.0)))+(res[ptype+'_price_extra'] or 0.0)
return result2
product_product()
def rounding(f, r):
if not r:
return f
return round(f / r) * r
#----------------------------------------------------------
# Price lists
#----------------------------------------------------------
class product_pricelist(osv.osv):
_name = "product.pricelist"
_description = "Pricelist"
_columns = {
'name': fields.char('Name',size=64, required=True),
'active': fields.boolean('Active'),
'version_id': fields.one2many('product.pricelist.version',
'pricelist_id', 'Pricelist Versions')
}
_defaults = {
'active': lambda x,y,z: 1,
}
def price_get(self, cr, uid, ids, prod_id, qty, type='list'):
result = {}
# TODO FIXME
for id in ids:
cr.execute('select * from product_pricelist_version where
pricelist_id=%d and active=True order by id limit 1', (id,))
plversion = cr.dictfetchone()
if not plversion:
raise 'pricelist', 'No active version for this pricelist !\nPlease
create or active one.'
cr.execute('select id,categ_id from product_template where
id=(select product_tmpl_id from product_product where id=%d)',
(prod_id,))
tmpl_id,categ = cr.fetchone()
categ_ids = []
while categ:
categ_ids.append(str(categ))
cr.execute('select parent_id from product_category where id=%d',
(categ,))
categ = cr.fetchone()[0]
if categ_ids:
categ_where = '(categ_id in ('+','.join(categ_ids)+'))'
else:
categ_where = '(categ_id is null)'
cr.execute('select * from product_pricelist_item where
(product_tmpl_id is null or product_tmpl_id=%d) and '+categ_where+' and
price_version_id=%d and (min_quantity is null or min_quantity<=%d)
order by priority limit 1', (tmpl_id, plversion['id'], qty))
res = cr.dictfetchone()
if res:
if res['base_pricelist_id'] and res['base']=='pricelist':
price = self.price_get(cr, uid, [res['base_pricelist_id']],
prod_id, qty, type)[res['base_pricelist_id']]
price_limit = self.price_get(cr, uid, [res['base_pricelist_id']],
prod_id, qty, 'limit')[res['base_pricelist_id']]
else:
price = self.pool.get('product.product').price_get(cr, uid,
[prod_id], type)[prod_id]
price_limit = self.pool.get('product.product').price_get(cr, uid,
[prod_id], 'limit')[prod_id]
price = price * (1.0-(res[type+'_price_discount'] or 0.0))
price=rounding(price, res[type+'_price_round'])
price += (res[type+'_price_surcharge'] or 0.0)
if res[type+'_price_min_margin']:
price = max(price, price_limit+res[type+'_price_min_margin'])
if res[type+'_price_max_margin']:
price = min(price, price_limit+res[type+'_price_max_margin'])
else:
price=False
result[id] = price
return result
product_pricelist()
class product_pricelist_version(osv.osv):
_name = "product.pricelist.version"
_description = "Pricelist Version"
_columns = {
'pricelist_id': fields.many2one('product.pricelist', 'Price List',
required=True),
'name': fields.char('Name', size=64, required=True),
'active': fields.boolean('Active'),
'items_id': fields.one2many('product.pricelist.item',
'price_version_id', 'Price List Items', required=True),
'date_start': fields.date('Start Date'),
'date_end': fields.date('End Date')
}
_defaults = {
'active': lambda x,y,z: 1,
}
product_pricelist_version()
class product_pricelist_item(osv.osv):
_name = "product.pricelist.item"
_description = "Pricelist item"
_order = "priority"
_defaults = {
'list_price_base': lambda x,y,z: 'list',
'standard_price_base': lambda x,y,z: 'standard',
'limit_price_base': lambda x,y,z: 'limit',
'min_quantity': lambda x,y,z: 1,
'priority': lambda x,y,z: 5,
}
_columns = {
'name': fields.char('Name', size=64, required=True),
'price_version_id': fields.many2one('product.pricelist.version',
'Price List Version', required=True),
'product_tmpl_id': fields.many2one('product.template', 'Product
Template'),
'categ_id': fields.many2one('product.category', 'Product Category'),
'min_quantity': fields.integer('Min. Quantity', required=True),
'priority': fields.integer('Priority', required=True),
'base':
fields.selection((('product','Product'),('pricelist','Pricelist')),
'Based on', required=True),
'base_pricelist_id': fields.many2one('product.pricelist', 'Base Price
List'),
'list_price_base':
fields.selection((('list','List'),('standard','Standard'),('limit','Limit')),'List
Price Base', required=True),
'list_price_surcharge': fields.float('List Price Surcharge'),
'list_price_discount': fields.float('List Price Discount'),
'list_price_round': fields.float('List Price Rounding'),
'list_price_min_margin': fields.float('List Price Min. Margin'),
'list_price_max_margin': fields.float('List Price Max. Margin'),
'standard_price_base':
fields.selection((('list','List'),('standard','Standard'),('limit','Limit')),'Standard
Price Base', required=True),
'standard_price_surcharge': fields.float('Standard Price Surcharge'),
'standard_price_discount': fields.float('Standard Price Discount'),
'standard_price_round': fields.float('Standard Price Rounding'),
'standard_price_min_margin': fields.float('Standard Price Min.
Margin'),
'standard_price_max_margin': fields.float('Standard Price Max.
Margin'),
'limit_price_base':
fields.selection((('list','List'),('standard','Standard'),('limit','Limit')),'Limit
Price Base', required=True),
'limit_price_surcharge': fields.float('Limit Price Surcharge'),
'limit_price_discount': fields.float('Limit Price Discount'),
'limit_price_round': fields.float('Limit Price Rounding'),
'limit_price_min_margin': fields.float('Limit Price Min. Margin'),
'limit_price_max_margin': fields.float('Limit Price Max. Margin'),
}
product_pricelist_item()
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