215 lines
7.7 KiB
Python
215 lines
7.7 KiB
Python
#This file is part of Tryton. The COPYRIGHT file at the top level of this repository contains the full copyright notices and license terms.
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"Currency"
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from trytond.osv import fields, OSV
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import time
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from decimal import Decimal
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import datetime
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class Currency(OSV):
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'Currency'
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_name = 'currency.currency'
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_description = __doc__
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name = fields.Char('Name', required=True, translate=True)
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symbol = fields.Char('Symbol', size=10, required=True)
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code = fields.Char('Code', size=3, required=True)
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rate = fields.Function('get_rate', string='Current rate', digits=(12, 6))
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rates = fields.One2Many('currency.currency.rate', 'currency', 'Rates')
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rounding = fields.Numeric('Rounding factor', digits=(12, 6), required=True)
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digits = fields.Integer('Diplay Digits')
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active = fields.Boolean('Active')
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# monetary formatting
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mon_grouping = fields.Char('Grouping', required=True)
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mon_decimal_point = fields.Char('Decimal Separator', required=True)
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mon_thousands_sep = fields.Char('Thousands Separator')
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p_sign_posn = fields.Integer('Positive Sign Position')
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n_sign_posn = fields.Integer('Negative Sign Position')
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positive_sign = fields.Char('Positive Sign')
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negative_sign = fields.Char('Negative Sign')
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p_cs_precedes = fields.Boolean('Positive Sign Precedes')
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n_cs_precedes = fields.Boolean('Negative Sign Precedes')
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p_sep_by_space = fields.Boolean('Positive Sign Separate by Space')
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n_sep_by_space = fields.Boolean('Negative Sign Separate by Space')
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def __init__(self):
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super(Currency, self).__init__()
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self._order.insert(0, ('code', 'ASC'))
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self._constraints += [
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('check_mon_grouping', 'invalid_mon_grouping'),
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]
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self._error_messages.update({
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'no_rate': 'No rate found for the currency: %s at the date: %s',
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'invalid_grouping': 'Invalid Grouping!',
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})
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def default_active(self, cursor, user, context=None):
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return True
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def default_rounding(self, cursor, user, context=None):
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return 0.01
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def default_digits(self, cursor, user, context=None):
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return 2
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def default_mon_grouping(self, cursor, user, context=None):
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return '[]'
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def default_mon_thousands_sep(self, cursor, user, context=None):
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return ','
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def default_mon_decimal_point(self, cursor, user, context=None):
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return '.'
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def default_p_sign_posn(self, cursor, user, context=None):
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return 1
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def default_n_sign_posn(self, cursor, user, context=None):
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return 1
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def default_negative_sign(self, cursor, user, context=None):
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return '-'
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def default_positive_sign(self, cursor, user, context=None):
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return ''
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def default_p_cs_precedes(self, cursor, user, context=None):
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return True
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def default_n_cs_precedes(self, cursor, user, context=None):
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return True
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def default_p_sep_by_space(self, cursor, user, context=None):
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return False
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def default_n_sep_by_space(self, cursor, user, context=None):
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return False
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def check_mon_grouping(self, cursor, user, ids):
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'''
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Check if mon_grouping is list of numbers
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'''
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for currency in self.browse(cursor, user, ids):
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try:
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grouping = eval(currency.mon_grouping)
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for i in grouping:
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if not isinstance(i, int):
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return False
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except:
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return False
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return True
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def name_search(self, cursor, user, name, args=None, operator='ilike',
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context=None, limit=None):
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if args is None:
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args = []
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args_name = args[:]
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args_code = args[:]
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if name:
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args_name += [(self._rec_name, operator, name)]
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args_code += [('code', operator, name)]
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ids = self.search(cursor, user, args_code, limit=limit, context=context)
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if len(ids) != 1:
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ids += self.search(cursor, user, args_name, limit=limit,
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context=context)
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res = self.name_get(cursor, user, ids, context=context)
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return res
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def get_rate(self, cursor, user, ids, name, arg, context=None):
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'''
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Return the rate at the date from the context or the current date
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'''
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res = {}
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rate_obj = self.pool.get('currency.currency.rate')
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if context is None:
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context = {}
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date = context.get('date', time.strftime('%Y-%m-%d'))
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for currency_id in ids:
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rate_ids = rate_obj.search(cursor, user, [
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('currency', '=', currency_id),
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('date', '<=', date),
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], limit=1, order=[('date', 'DESC')])
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if rate_ids:
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res[currency_id] = rate_ids[0]
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else:
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res[currency_id] = 0.0
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rate_ids = [x for x in res.values() if x]
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rates = rate_obj.browse(cursor, user, rate_ids, context=context)
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id2rate = {}
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for rate in rates:
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id2rate[rate.id] = rate
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for currency_id in res.keys():
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if res[currency_id]:
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res[currency_id] = id2rate[res[currency_id]].rate
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return res
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def round(self, cursor, user, currency, amount):
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'Round the amount depending of the currency'
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return (amount / currency.rounding).quantize(Decimal('1.')) * currency.rounding
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def is_zero(self, cursor, user, currency, amount):
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'Return True if the amount can be considered as zero for the currency'
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return abs(self.round(cursor, user, currency, amount)) < currency.rounding
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def compute(self, cursor, user, from_currency, amount, to_currency,
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round=True, context=None):
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'''
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Take a currency and an amount
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Return the amount to the new currency
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Use the rate of the date of the context or the current date
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'''
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if context is None:
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context = {}
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if isinstance(from_currency, (int, long)):
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from_currency = self.browse(cursor, user, from_currency, context=context)
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if isinstance(to_currency, (int, long)):
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to_currency = self.browse(cursor, user, to_currency, context=context)
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if to_currency == from_currency:
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if round:
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return self.round(cursor, user, to_currency, amount)
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else:
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return amount
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if (not from_currency.rate) or (not to_currency.rate):
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date = context.get('date', time.strftime('%Y-%m-%d'))
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if not from_currency.rate:
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name = from_currency.name
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else:
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name = to_currency.name
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self.raise_user_error(cursor, 'no_rate', (name, date),
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context=context)
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if round:
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return self.round(cursor, user, to_currency,
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amount * to_currency.rate / from_currency.rate)
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else:
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return amount * to_currency.rate / from_currency.rate
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Currency()
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class Rate(OSV):
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'Rate'
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_name = 'currency.currency.rate'
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_description = __doc__
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_rec_name = 'date'
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date = fields.Date('Date', required=True, select=1)
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rate = fields.Numeric('Rate', digits=(12, 6), required=1)
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currency = fields.Many2One('currency.currency', 'Currency')
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def __init__(self):
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super(Rate, self).__init__()
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self._sql_constraints = [
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('date_currency_uniq', 'UNIQUE(date, currency)',
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'A currency can only have one rate by date!'),
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]
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self._order.insert(0, ('date', 'DESC'))
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def default_date(self, cursor, user, context=None):
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return datetime.date.today()
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def check_xml_record(self, cursor, user, ids, values, context=None):
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return True
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Rate()
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