<commit_before># -*- encoding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution	
#    Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>). All Rights Reserved
#    $Id$
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################

from osv import fields, osv

#from tools.misc import currency
from _common import rounding
import time
from tools import config
from tools.misc import ustr
from tools.translate import _

class price_type(osv.osv):
    """
        The price type is used to points which field in the product form
        is a price and in which currency is this price expressed.
        When a field is a price, you can use it in pricelists to base
        sale and purchase prices based on some fields of the product.
    """
    def _price_field_get(self, cr, uid, context={}):
        mf = self.pool.get('ir.model.fields')
        ids = mf.search(cr, uid, [('model','in', (('product.product'),('product.template'))), ('ttype','=','float')], context=context)
        res = []
        for field in mf.browse(cr, uid, ids, context=context):
            res.append((field.name, field.field_description))
        return res

    def _get_currency(self, cr, uid, ctx):
        comp = self.pool.get('res.users').browse(cr,uid,uid).company_id
        if not comp:
            comp_id = self.pool.get('res.company').search(cr, uid, [])[0]
            comp = self.pool.get('res.company').browse(cr, uid, comp_id)
        return comp.currency_id.id

    _name = "product.price.type"
    _description = "Price type"
    _columns = {
        "name" : fields.char("Price Name", size=32, required=True, translate=True, help="Name of this kind of price."),
        "active" : fields.boolean("Active"),
        "field" : fields.selection(_price_field_get, "Product Field", size=32, required=True, help="Associated field in the product form."),
        "currency_id" : fields.many2one('res.currency', "Currency", required=True, help="The currency the field is expressed in."),
    }
    _defaults = {
        "active": lambda *args: True,
        "currency_id": _get_currency
    }
price_type()

#----------------------------------------------------------
# Price lists
#----------------------------------------------------------

class product_pricelist_type(osv.osv):
    _name = "product.pricelist.type"
    _description = "Pricelist Type"
    _columns = {
        'name': fields.char('Name',size=64, required=True, translate=True),
        'key': fields.char('Key', size=64, required=True, help="Used in the code to select specific prices based on the context. Keep unchanged."),
    }
product_pricelist_type()


class product_pricelist(osv.osv):
    def _pricelist_type_get(self, cr, uid, context={}):
        cr.execute('select key,name from product_pricelist_type order by name')
        return cr.fetchall()
    _name = "product.pricelist"
    _description = "Pricelist"
    _columns = {
        'name': fields.char('Pricelist Name',size=64, required=True, translate=True),
        'active': fields.boolean('Active'),
        'type': fields.selection(_pricelist_type_get, 'Pricelist Type', required=True),
        'version_id': fields.one2many('product.pricelist.version', 'pricelist_id', 'Pricelist Versions'),
        'currency_id': fields.many2one('res.currency', 'Currency', required=True),
    }
    
    def name_get(self, cr, uid, ids, context={}):
        result= []
        if not all(ids):
            return result
        for pl in self.browse(cr, uid, ids, context):
            name = pl.name + ' ('+ pl.currency_id.name + ')'
            result.append((pl.id,name))
        return result
    

    def _get_currency(self, cr, uid, ctx):
        comp = self.pool.get('res.users').browse(cr, uid, uid).company_id
        if not comp:
            comp_id = self.pool.get('res.company').search(cr, uid, [])[0]
            comp = self.pool.get('res.company').browse(cr, uid, comp_id)
        return comp.currency_id.id

    _defaults = {
        'active': lambda *a: 1,
        "currency_id": _get_currency
    }

    def price_get(self, cr, uid, ids, prod_id, qty, partner=None, context=None):
        '''
        context = {
            'uom': Unit of Measure (int),
            'partner': Partner ID (int),
            'date': Date of the pricelist (%Y-%m-%d),
        }
        '''
        context = context or {}
        currency_obj = self.pool.get('res.currency')
        product_obj = self.pool.get('product.product')
        supplierinfo_obj = self.pool.get('product.supplierinfo')
        price_type_obj = self.pool.get('product.price.type')

        if context and ('partner_id' in context):
            partner = context['partner_id']
        context['partner_id'] = partner
        date = time.strftime('%Y-%m-%d')
        if context and ('date' in context):
            date = context['date']
        result = {}
        for id in ids:
            cr.execute('SELECT * ' \
                    'FROM product_pricelist_version ' \
                    'WHERE pricelist_id = %s AND active=True ' \
                        'AND (date_start IS NULL OR date_start <= %s) ' \
                        'AND (date_end IS NULL OR date_end >= %s) ' \
                    'ORDER BY id LIMIT 1', (id, date, date))
            plversion = cr.dictfetchone()

            if not plversion:
                raise osv.except_osv(_('Warning !'),
                        _('No active version for the selected pricelist !\n' \
                                'Please create or activate one.'))

            cr.execute('SELECT id, categ_id ' \
                    'FROM product_template ' \
                    'WHERE id = (SELECT product_tmpl_id ' \
                        'FROM product_product ' \
                        'WHERE id = %s)', (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 = %s', (categ,))
                categ = cr.fetchone()[0]
                if str(categ) in categ_ids:
                    raise osv.except_osv(_('Warning !'),
                            _('Could not resolve product category, ' \
                                    'you have defined cyclic categories ' \
                                    'of products!'))
            if categ_ids:
                categ_where = '(categ_id IN (' + ','.join(categ_ids) + '))'
            else:
                categ_where = '(categ_id IS NULL)'

            cr.execute(
                'SELECT i.*, pl.currency_id '
                'FROM product_pricelist_item AS i, '
                    'product_pricelist_version AS v, product_pricelist AS pl '
                'WHERE (product_tmpl_id IS NULL OR product_tmpl_id = %s) '
                    'AND (product_id IS NULL OR product_id = %s) '
                    'AND (' + categ_where + ' OR (categ_id IS NULL)) '
                    'AND price_version_id = %s '
                    'AND (min_quantity IS NULL OR min_quantity <= %s) '
                    'AND i.price_version_id = v.id AND v.pricelist_id = pl.id '
                'ORDER BY sequence LIMIT 1',
                (tmpl_id, prod_id, plversion['id'], qty))
            res = cr.dictfetchone()
            if res:
                if res['base'] == -1:
                    if not res['base_pricelist_id']:
                        price = 0.0
                    else:
                        price_tmp = self.price_get(cr, uid,
                                [res['base_pricelist_id']], prod_id,
                                qty)[res['base_pricelist_id']]
                        ptype_src = self.browse(cr, uid,
                                res['base_pricelist_id']).currency_id.id
                        price = currency_obj.compute(cr, uid, ptype_src,
                                res['currency_id'], price_tmp, round=False)
                elif res['base'] == -2:
                    where = []
                    if partner:
                        where = [('name', '=', partner) ] 
                    sinfo = supplierinfo_obj.search(cr, uid,
                            [('product_id', '=', tmpl_id)] + where)
                    price = 0.0
                    if sinfo:
                        cr.execute('SELECT * ' \
                                'FROM pricelist_partnerinfo ' \
                                'WHERE suppinfo_id IN (' + \
                                    ','.join(map(str, sinfo)) + ') ' \
                                    'AND min_quantity <= %s ' \
                                'ORDER BY min_quantity DESC LIMIT 1', (qty,))
                        res2 = cr.dictfetchone()
                        if res2:
                            price = res2['price']
                else:
                    price_type = price_type_obj.browse(cr, uid, int(res['base']))
                    price = currency_obj.compute(cr, uid,
                            price_type.currency_id.id, res['currency_id'],
                            product_obj.price_get(cr, uid, [prod_id],
                                price_type.field)[prod_id], round=False)

                price_limit = price

                price = price * (1.0+(res['price_discount'] or 0.0))
                price = rounding(price, res['price_round'])
                price += (res['price_surcharge'] or 0.0)
                if res['price_min_margin']:
                    price = max(price, price_limit+res['price_min_margin'])
                if res['price_max_margin']:
                    price = min(price, price_limit+res['price_max_margin'])
            else:
                # False means no valid line found ! But we may not raise an
                # exception here because it breaks the search
                price = False
            result[id] = price            
            if context and ('uom' in context):
                product = product_obj.browse(cr, uid, prod_id)
                uom = product.uos_id or product.uom_id
                result[id] = self.pool.get('product.uom')._compute_price(cr,
                        uid, uom.id, result[id], context['uom'])                
        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, select=True),
        'name': fields.char('Name', size=64, required=True, translate=True),
        'active': fields.boolean('Active',
            help="When a version is duplicated it is set to non active, so that the " \
            "dates do not overlaps with original version. You should change the dates " \
            "and reactivate the pricelist"),
        'items_id': fields.one2many('product.pricelist.item',
            'price_version_id', 'Price List Items', required=True),
        'date_start': fields.date('Start Date', help="Starting date for this pricelist version to be valid."),
        'date_end': fields.date('End Date', help="Ending date for this pricelist version to be valid."),
    }
    _defaults = {
        'active': lambda *a: 1,
    }

    # We desactivate duplicated pricelists, so that dates do not overlap
    def copy(self, cr, uid, id, default=None,context={}):
        if not default: default= {}
        default['active'] = False
        return super(product_pricelist_version, self).copy(cr, uid, id, default, context)

    def _check_date(self, cursor, user, ids):
        for pricelist_version in self.browse(cursor, user, ids):
            if not pricelist_version.active:
                continue
            where = []
            if pricelist_version.date_start:
                where.append("((date_end>='%s') or (date_end is null))" % (pricelist_version.date_start,))
            if pricelist_version.date_end:
                where.append("((date_start<='%s') or (date_start is null))" % (pricelist_version.date_end,))

            cursor.execute('SELECT id ' \
                    'FROM product_pricelist_version ' \
                    'WHERE '+' and '.join(where) + (where and ' and ' or '')+
                        'pricelist_id = %s ' \
                        'AND active ' \
                        'AND id <> %s', (
                            pricelist_version.pricelist_id.id,
                            pricelist_version.id))
            if cursor.fetchall():
                return False
        return True

    _constraints = [
        (_check_date, 'You cannot have 2 pricelist versions that overlap!',
            ['date_start', 'date_end'])
    ]

product_pricelist_version()

class product_pricelist_item(osv.osv):
    def _price_field_get(self, cr, uid, context={}):
        pt = self.pool.get('product.price.type')
        ids = pt.search(cr, uid, [], context=context)
        result = []
        for line in pt.browse(cr, uid, ids, context=context):
            result.append((line.id, line.name))

        result.append((-1, _('Other Pricelist')))
        result.append((-2, _('Partner section of the product form')))
        return result

    _name = "product.pricelist.item"
    _description = "Pricelist item"
    _order = "sequence, min_quantity desc"
    _defaults = {
        'base': lambda *a: -1,
        'min_quantity': lambda *a: 0,
        'sequence': lambda *a: 5,
        'price_discount': lambda *a: 0,
    }
    _columns = {
        'name': fields.char('Rule Name', size=64, help="Explicit rule name for this pricelist line."),
        'price_version_id': fields.many2one('product.pricelist.version', 'Price List Version', required=True, select=True),
        'product_tmpl_id': fields.many2one('product.template', 'Product Template', ondelete='cascade', help="Set a template if this rule only apply to a template of product. Keep empty for all products"),
        'product_id': fields.many2one('product.product', 'Product', ondelete='cascade', help="Set a product if this rule only apply to one product. Keep empty for all products"),
        'categ_id': fields.many2one('product.category', 'Product Category', ondelete='cascade', help="Set a category of product if this rule only apply to products of a category and his childs. Keep empty for all products"),

        'min_quantity': fields.integer('Min. Quantity', required=True, help="The rule only applies if the partner buys/sells more than this quantity."),
        'sequence': fields.integer('Sequence', required=True),
        'base': fields.selection(_price_field_get, 'Based on', required=True, size=-1, help="The mode for computing the price for this rule."),
        'base_pricelist_id': fields.many2one('product.pricelist', 'If Other Pricelist'),

        'price_surcharge': fields.float('Price Surcharge',
            digits=(16, int(config['price_accuracy']))),
        'price_discount': fields.float('Price Discount', digits=(16,4)),
        'price_round': fields.float('Price Rounding',
            digits=(16, int(config['price_accuracy'])),
            help="Sets the price so that it is a multiple of this value.\n" \
              "Rounding is applied after the discount and before the surcharge.\n" \
              "To have prices that end in 9.99, set rounding 10, surcharge -0.01" \
            ),
        'price_min_margin': fields.float('Min. Price Margin',
            digits=(16, int(config['price_accuracy']))),
        'price_max_margin': fields.float('Max. Price Margin',
            digits=(16, int(config['price_accuracy']))),
    }
    def product_id_change(self, cr, uid, ids, product_id, context={}):
        if not product_id:
            return {}
        prod = self.pool.get('product.product').read(cr, uid, [product_id], ['code','name'])
        if prod[0]['code']:
            return {'value': {'name': prod[0]['code']}}
        return {}
product_pricelist_item()



# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:

<commit_msg>[FIX] Product : Pricelist types getting translated on Pricelist<commit_after># -*- encoding: utf-8 -*-
##############################################################################
#
#    OpenERP, Open Source Management Solution	
#    Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>). All Rights Reserved
#    $Id$
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################

from osv import fields, osv

#from tools.misc import currency
from _common import rounding
import time
from tools import config
from tools.misc import ustr
from tools.translate import _

class price_type(osv.osv):
    """
        The price type is used to points which field in the product form
        is a price and in which currency is this price expressed.
        When a field is a price, you can use it in pricelists to base
        sale and purchase prices based on some fields of the product.
    """
    def _price_field_get(self, cr, uid, context={}):
        mf = self.pool.get('ir.model.fields')
        ids = mf.search(cr, uid, [('model','in', (('product.product'),('product.template'))), ('ttype','=','float')], context=context)
        res = []
        for field in mf.browse(cr, uid, ids, context=context):
            res.append((field.name, field.field_description))
        return res

    def _get_currency(self, cr, uid, ctx):
        comp = self.pool.get('res.users').browse(cr,uid,uid).company_id
        if not comp:
            comp_id = self.pool.get('res.company').search(cr, uid, [])[0]
            comp = self.pool.get('res.company').browse(cr, uid, comp_id)
        return comp.currency_id.id

    _name = "product.price.type"
    _description = "Price type"
    _columns = {
        "name" : fields.char("Price Name", size=32, required=True, translate=True, help="Name of this kind of price."),
        "active" : fields.boolean("Active"),
        "field" : fields.selection(_price_field_get, "Product Field", size=32, required=True, help="Associated field in the product form."),
        "currency_id" : fields.many2one('res.currency', "Currency", required=True, help="The currency the field is expressed in."),
    }
    _defaults = {
        "active": lambda *args: True,
        "currency_id": _get_currency
    }
price_type()

#----------------------------------------------------------
# Price lists
#----------------------------------------------------------

class product_pricelist_type(osv.osv):
    _name = "product.pricelist.type"
    _description = "Pricelist Type"
    _columns = {
        'name': fields.char('Name',size=64, required=True, translate=True),
        'key': fields.char('Key', size=64, required=True, help="Used in the code to select specific prices based on the context. Keep unchanged."),
    }
product_pricelist_type()


class product_pricelist(osv.osv):
    def _pricelist_type_get(self, cr, uid, context={}):
        pricelist_type_obj = self.pool.get('product.pricelist.type')
        pricelist_type_ids = pricelist_type_obj.search(cr, uid, [], order='name')
        pricelist_types = pricelist_type_obj.read(cr, uid, pricelist_type_ids, ['key','name'], context=context)
        
        res = []
        
        for type in pricelist_types:
            res.append((type['key'],type['name']))
        
        return res
#        cr.execute('select key,name from product_pricelist_type order by name')
#        return cr.fetchall()
    _name = "product.pricelist"
    _description = "Pricelist"
    _columns = {
        'name': fields.char('Pricelist Name',size=64, required=True, translate=True),
        'active': fields.boolean('Active'),
        'type': fields.selection(_pricelist_type_get, 'Pricelist Type', required=True),
        'version_id': fields.one2many('product.pricelist.version', 'pricelist_id', 'Pricelist Versions'),
        'currency_id': fields.many2one('res.currency', 'Currency', required=True),
    }
    
    def name_get(self, cr, uid, ids, context={}):
        result= []
        if not all(ids):
            return result
        for pl in self.browse(cr, uid, ids, context):
            name = pl.name + ' ('+ pl.currency_id.name + ')'
            result.append((pl.id,name))
        return result
    

    def _get_currency(self, cr, uid, ctx):
        comp = self.pool.get('res.users').browse(cr, uid, uid).company_id
        if not comp:
            comp_id = self.pool.get('res.company').search(cr, uid, [])[0]
            comp = self.pool.get('res.company').browse(cr, uid, comp_id)
        return comp.currency_id.id

    _defaults = {
        'active': lambda *a: 1,
        "currency_id": _get_currency
    }

    def price_get(self, cr, uid, ids, prod_id, qty, partner=None, context=None):
        '''
        context = {
            'uom': Unit of Measure (int),
            'partner': Partner ID (int),
            'date': Date of the pricelist (%Y-%m-%d),
        }
        '''
        context = context or {}
        currency_obj = self.pool.get('res.currency')
        product_obj = self.pool.get('product.product')
        supplierinfo_obj = self.pool.get('product.supplierinfo')
        price_type_obj = self.pool.get('product.price.type')

        if context and ('partner_id' in context):
            partner = context['partner_id']
        context['partner_id'] = partner
        date = time.strftime('%Y-%m-%d')
        if context and ('date' in context):
            date = context['date']
        result = {}
        for id in ids:
            cr.execute('SELECT * ' \
                    'FROM product_pricelist_version ' \
                    'WHERE pricelist_id = %s AND active=True ' \
                        'AND (date_start IS NULL OR date_start <= %s) ' \
                        'AND (date_end IS NULL OR date_end >= %s) ' \
                    'ORDER BY id LIMIT 1', (id, date, date))
            plversion = cr.dictfetchone()

            if not plversion:
                raise osv.except_osv(_('Warning !'),
                        _('No active version for the selected pricelist !\n' \
                                'Please create or activate one.'))

            cr.execute('SELECT id, categ_id ' \
                    'FROM product_template ' \
                    'WHERE id = (SELECT product_tmpl_id ' \
                        'FROM product_product ' \
                        'WHERE id = %s)', (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 = %s', (categ,))
                categ = cr.fetchone()[0]
                if str(categ) in categ_ids:
                    raise osv.except_osv(_('Warning !'),
                            _('Could not resolve product category, ' \
                                    'you have defined cyclic categories ' \
                                    'of products!'))
            if categ_ids:
                categ_where = '(categ_id IN (' + ','.join(categ_ids) + '))'
            else:
                categ_where = '(categ_id IS NULL)'

            cr.execute(
                'SELECT i.*, pl.currency_id '
                'FROM product_pricelist_item AS i, '
                    'product_pricelist_version AS v, product_pricelist AS pl '
                'WHERE (product_tmpl_id IS NULL OR product_tmpl_id = %s) '
                    'AND (product_id IS NULL OR product_id = %s) '
                    'AND (' + categ_where + ' OR (categ_id IS NULL)) '
                    'AND price_version_id = %s '
                    'AND (min_quantity IS NULL OR min_quantity <= %s) '
                    'AND i.price_version_id = v.id AND v.pricelist_id = pl.id '
                'ORDER BY sequence LIMIT 1',
                (tmpl_id, prod_id, plversion['id'], qty))
            res = cr.dictfetchone()
            if res:
                if res['base'] == -1:
                    if not res['base_pricelist_id']:
                        price = 0.0
                    else:
                        price_tmp = self.price_get(cr, uid,
                                [res['base_pricelist_id']], prod_id,
                                qty)[res['base_pricelist_id']]
                        ptype_src = self.browse(cr, uid,
                                res['base_pricelist_id']).currency_id.id
                        price = currency_obj.compute(cr, uid, ptype_src,
                                res['currency_id'], price_tmp, round=False)
                elif res['base'] == -2:
                    where = []
                    if partner:
                        where = [('name', '=', partner) ] 
                    sinfo = supplierinfo_obj.search(cr, uid,
                            [('product_id', '=', tmpl_id)] + where)
                    price = 0.0
                    if sinfo:
                        cr.execute('SELECT * ' \
                                'FROM pricelist_partnerinfo ' \
                                'WHERE suppinfo_id IN (' + \
                                    ','.join(map(str, sinfo)) + ') ' \
                                    'AND min_quantity <= %s ' \
                                'ORDER BY min_quantity DESC LIMIT 1', (qty,))
                        res2 = cr.dictfetchone()
                        if res2:
                            price = res2['price']
                else:
                    price_type = price_type_obj.browse(cr, uid, int(res['base']))
                    price = currency_obj.compute(cr, uid,
                            price_type.currency_id.id, res['currency_id'],
                            product_obj.price_get(cr, uid, [prod_id],
                                price_type.field)[prod_id], round=False)

                price_limit = price

                price = price * (1.0+(res['price_discount'] or 0.0))
                price = rounding(price, res['price_round'])
                price += (res['price_surcharge'] or 0.0)
                if res['price_min_margin']:
                    price = max(price, price_limit+res['price_min_margin'])
                if res['price_max_margin']:
                    price = min(price, price_limit+res['price_max_margin'])
            else:
                # False means no valid line found ! But we may not raise an
                # exception here because it breaks the search
                price = False
            result[id] = price            
            if context and ('uom' in context):
                product = product_obj.browse(cr, uid, prod_id)
                uom = product.uos_id or product.uom_id
                result[id] = self.pool.get('product.uom')._compute_price(cr,
                        uid, uom.id, result[id], context['uom'])                
        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, select=True),
        'name': fields.char('Name', size=64, required=True, translate=True),
        'active': fields.boolean('Active',
            help="When a version is duplicated it is set to non active, so that the " \
            "dates do not overlaps with original version. You should change the dates " \
            "and reactivate the pricelist"),
        'items_id': fields.one2many('product.pricelist.item',
            'price_version_id', 'Price List Items', required=True),
        'date_start': fields.date('Start Date', help="Starting date for this pricelist version to be valid."),
        'date_end': fields.date('End Date', help="Ending date for this pricelist version to be valid."),
    }
    _defaults = {
        'active': lambda *a: 1,
    }

    # We desactivate duplicated pricelists, so that dates do not overlap
    def copy(self, cr, uid, id, default=None,context={}):
        if not default: default= {}
        default['active'] = False
        return super(product_pricelist_version, self).copy(cr, uid, id, default, context)

    def _check_date(self, cursor, user, ids):
        for pricelist_version in self.browse(cursor, user, ids):
            if not pricelist_version.active:
                continue
            where = []
            if pricelist_version.date_start:
                where.append("((date_end>='%s') or (date_end is null))" % (pricelist_version.date_start,))
            if pricelist_version.date_end:
                where.append("((date_start<='%s') or (date_start is null))" % (pricelist_version.date_end,))

            cursor.execute('SELECT id ' \
                    'FROM product_pricelist_version ' \
                    'WHERE '+' and '.join(where) + (where and ' and ' or '')+
                        'pricelist_id = %s ' \
                        'AND active ' \
                        'AND id <> %s', (
                            pricelist_version.pricelist_id.id,
                            pricelist_version.id))
            if cursor.fetchall():
                return False
        return True

    _constraints = [
        (_check_date, 'You cannot have 2 pricelist versions that overlap!',
            ['date_start', 'date_end'])
    ]

product_pricelist_version()

class product_pricelist_item(osv.osv):
    def _price_field_get(self, cr, uid, context={}):
        pt = self.pool.get('product.price.type')
        ids = pt.search(cr, uid, [], context=context)
        result = []
        for line in pt.browse(cr, uid, ids, context=context):
            result.append((line.id, line.name))

        result.append((-1, _('Other Pricelist')))
        result.append((-2, _('Partner section of the product form')))
        return result

    _name = "product.pricelist.item"
    _description = "Pricelist item"
    _order = "sequence, min_quantity desc"
    _defaults = {
        'base': lambda *a: -1,
        'min_quantity': lambda *a: 0,
        'sequence': lambda *a: 5,
        'price_discount': lambda *a: 0,
    }
    _columns = {
        'name': fields.char('Rule Name', size=64, help="Explicit rule name for this pricelist line."),
        'price_version_id': fields.many2one('product.pricelist.version', 'Price List Version', required=True, select=True),
        'product_tmpl_id': fields.many2one('product.template', 'Product Template', ondelete='cascade', help="Set a template if this rule only apply to a template of product. Keep empty for all products"),
        'product_id': fields.many2one('product.product', 'Product', ondelete='cascade', help="Set a product if this rule only apply to one product. Keep empty for all products"),
        'categ_id': fields.many2one('product.category', 'Product Category', ondelete='cascade', help="Set a category of product if this rule only apply to products of a category and his childs. Keep empty for all products"),

        'min_quantity': fields.integer('Min. Quantity', required=True, help="The rule only applies if the partner buys/sells more than this quantity."),
        'sequence': fields.integer('Sequence', required=True),
        'base': fields.selection(_price_field_get, 'Based on', required=True, size=-1, help="The mode for computing the price for this rule."),
        'base_pricelist_id': fields.many2one('product.pricelist', 'If Other Pricelist'),

        'price_surcharge': fields.float('Price Surcharge',
            digits=(16, int(config['price_accuracy']))),
        'price_discount': fields.float('Price Discount', digits=(16,4)),
        'price_round': fields.float('Price Rounding',
            digits=(16, int(config['price_accuracy'])),
            help="Sets the price so that it is a multiple of this value.\n" \
              "Rounding is applied after the discount and before the surcharge.\n" \
              "To have prices that end in 9.99, set rounding 10, surcharge -0.01" \
            ),
        'price_min_margin': fields.float('Min. Price Margin',
            digits=(16, int(config['price_accuracy']))),
        'price_max_margin': fields.float('Max. Price Margin',
            digits=(16, int(config['price_accuracy']))),
    }
    def product_id_change(self, cr, uid, ids, product_id, context={}):
        if not product_id:
            return {}
        prod = self.pool.get('product.product').read(cr, uid, [product_id], ['code','name'])
        if prod[0]['code']:
            return {'value': {'name': prod[0]['code']}}
        return {}
product_pricelist_item()



# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:


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