bin/addons/base/res/res_currency.py

   1 # -*- encoding: utf-8 -*-
   2 ##############################################################################
   3 #
   4 #    OpenERP, Open Source Management Solution
   5 #    Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>). All Rights Reserved
   6 #    $Id$
   7 #
   8 #    This program is free software: you can redistribute it and/or modify
   9 #    it under the terms of the GNU General Public License as published by
  10 #    the Free Software Foundation, either version 3 of the License, or
  11 #    (at your option) any later version.
  12 #
  13 #    This program is distributed in the hope that it will be useful,
  14 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 #    GNU General Public License for more details.
  17 #
  18 #    You should have received a copy of the GNU General Public License
  19 #    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 #
  21 ##############################################################################
  22 import time
  23 import netsvc
  24 from osv import fields, osv
  25 import ir
  26
  27 from tools.misc import currency
  28 from tools.translate import _
  29
  30 import mx.DateTime
  31 from mx.DateTime import RelativeDateTime, now, DateTime, localtime
  32
  33 class res_currency(osv.osv):
  34     def _current_rate(self, cr, uid, ids, name, arg, context={}):
  35         res={}
  36         if 'date' in context:
  37             date=context['date']
  38         else:
  39             date=time.strftime('%Y-%m-%d')
  40         date= date or time.strftime('%Y-%m-%d')
  41         for id in ids:
  42             cr.execute("SELECT currency_id, rate FROM res_currency_rate WHERE currency_id = %s AND name <= '%s' ORDER BY name desc LIMIT 1" % (id, date))
  43             if cr.rowcount:
  44                 id, rate=cr.fetchall()[0]
  45                 res[id]=rate
  46             else:
  47                 res[id]=0
  48         return res
  49     _name = "res.currency"
  50     _description = "Currency"
  51     _columns = {
  52         'name': fields.char('Currency', size=32, required=True),
  53         'code': fields.char('Code', size=3),
  54         'rate': fields.function(_current_rate, method=True, string='Current rate', digits=(12,6),
  55             help='The rate of the currency to the currency of rate 1'),
  56         'rate_ids': fields.one2many('res.currency.rate', 'currency_id', 'Rates'),
  57         'accuracy': fields.integer('Computational Accuracy'),
  58         'rounding': fields.float('Rounding factor', digits=(12,6)),
  59         'active': fields.boolean('Active'),
  60     }
  61     _defaults = {
  62         'active': lambda *a: 1,
  63     }
  64     _order = "code"
  65
  66     def round(self, cr, uid, currency, amount):
  67         if currency.rounding == 0:
  68             return 0.0
  69         else:
  70             return round(amount / currency.rounding) * currency.rounding
  71
  72     def is_zero(self, cr, uid, currency, amount):
  73         return abs(self.round(cr, uid, currency, amount)) < currency.rounding
  74
  75     def compute(self, cr, uid, from_currency_id, to_currency_id, from_amount, round=True, context={}, account=None, account_invert=False):
  76         if not from_currency_id:
  77             from_currency_id = to_currency_id
  78         xc=self.browse(cr, uid, [from_currency_id,to_currency_id], context=context)
  79         from_currency = (xc[0].id == from_currency_id and xc[0]) or xc[1]
  80         to_currency = (xc[0].id == to_currency_id and xc[0]) or xc[1]
  81         if from_currency['rate'] == 0 or to_currency['rate'] == 0:
  82             date = context.get('date', time.strftime('%Y-%m-%d'))
  83             if from_currency['rate'] == 0:
  84                 code = from_currency.code
  85             else:
  86                 code = to_currency.code
  87             raise osv.except_osv(_('Error'), _('No rate found \n' \
  88                     'for the currency: %s \n' \
  89                     'at the date: %s') % (code, date))
  90         rate = to_currency.rate/from_currency.rate
  91         if account and (account.currency_mode=='average') and account.currency_id:
  92             q = self.pool.get('account.move.line')._query_get(cr, uid, context=context)
  93             cr.execute('select sum(debit-credit),sum(amount_currency) from account_move_line l ' \
  94               'where l.currency_id=%s and l.account_id=%s and '+q, (account.currency_id.id,account.id,))
  95             tot1,tot2 = cr.fetchone()
  96             if tot2 and not account_invert:
  97                 rate = float(tot1)/float(tot2)
  98             elif tot1 and account_invert:
  99                 rate = float(tot2)/float(tot1)
 100         if to_currency_id==from_currency_id:
 101             if round:
 102                 return self.round(cr, uid, to_currency, from_amount)
 103             else:
 104                 return from_amount
 105         else:
 106             if round:
 107                 return self.round(cr, uid, to_currency, from_amount * rate)
 108             else:
 109                 return (from_amount * rate)
 110
 111     def name_search(self, cr, uid, name, args=[], operator='ilike', context={}, limit=80):
 112         args2 = args[:]
 113         if name:
 114             args += [('name', operator, name)]
 115             args2 += [('code', operator, name)]
 116         ids = self.search(cr, uid, args, limit=limit)
 117         ids += self.search(cr, uid, args2, limit=limit)
 118         res = self.name_get(cr, uid, ids, context)
 119         return res
 120 res_currency()
 121
 122 class res_currency_rate(osv.osv):
 123     _name = "res.currency.rate"
 124     _description = "Currency Rate"
 125     _columns = {
 126         'name': fields.date('Date', required=True, select=True),
 127         'rate': fields.float('Rate', digits=(12,6), required=True,
 128             help='The rate of the currency to the currency of rate 1'),
 129         'currency_id': fields.many2one('res.currency', 'Currency', readonly=True),
 130     }
 131     _defaults = {
 132         'name': lambda *a: time.strftime('%Y-%m-%d'),
 133     }
 134     _order = "name desc"
 135 res_currency_rate()
 136
 137 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
 138