249 lines
9.5 KiB
Python
249 lines
9.5 KiB
Python
#This file is part of Tryton. The COPYRIGHT file at the top level of
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#this repository contains the full copyright notices and license terms.
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from trytond.model import ModelView, ModelSQL, fields
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from trytond.model.modelstorage import OPERATORS
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from decimal import Decimal
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STATES = {
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'readonly': "active == False",
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}
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class UomCategory(ModelSQL, ModelView):
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'Product uom category'
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_name = 'product.uom.category'
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_description = __doc__
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name = fields.Char('Name', required=True, translate=True)
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uoms = fields.One2Many('product.uom', 'category', 'Unit of Measures')
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def __init__(self):
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super(UomCategory, self).__init__()
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self._order.insert(0, ('name', 'ASC'))
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UomCategory()
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class Uom(ModelSQL, ModelView):
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'Unit of measure'
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_name = 'product.uom'
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_description = __doc__
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name = fields.Char('Name', size=None, required=True, states=STATES,
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translate=True)
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symbol = fields.Char('Symbol', size=10, required=True, states=STATES,
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translate=True)
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category = fields.Many2One('product.uom.category', 'UOM Category',
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required=True, ondelete='cascade', states=STATES)
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rate = fields.Float('Rate', digits=(12, 6), required=True,
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on_change=['rate'], states=STATES,
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help='The coefficient for the formula:\n' \
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'1 (base unit) = coef (this unit)')
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factor = fields.Float('Factor', digits=(12, 6), states=STATES,
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on_change=['factor'], required=True,
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help='The coefficient for the formula:\n' \
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'coef (base unit) = 1 (this unit)')
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rounding = fields.Float('Rounding Precision', digits=(12, 6),
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required=True, states=STATES)
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digits = fields.Integer('Display Digits')
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active = fields.Boolean('Active')
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def __init__(self):
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super(Uom, self).__init__()
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self._order.insert(0, ('name', 'ASC'))
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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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def default_rate(self, cursor, user, context=None):
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return 1.0
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def default_factor(self, cursor, user, context=None):
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return 1.0
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def default_active(self, cursor, user, context=None):
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return 1
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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_category(self, cursor, user, context=None):
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category_obj = self.pool.get('product.uom.category')
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product_obj = self.pool.get('product.product')
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if context is None:
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context = {}
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if 'category' in context:
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if isinstance(context['category'], (tuple, list)) \
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and len(context['category']) > 1 \
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and context['category'][1] in ('uom.category',
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'product.default_uom.category'):
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if context['category'][1] == 'uom.category':
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if not context['category'][0]:
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return False
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uom = self.browse(cursor, user, context['category'][0],
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context=context)
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return uom.category.id
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else:
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if not context['category'][0]:
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return False
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product = product_obj.browse(cursor, user,
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context['category'][0], context=context)
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return product.default_uom.category.id
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return False
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def on_change_factor(self, cursor, user, ids, value, context=None):
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if value.get('factor', 0.0) == 0.0:
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return {'rate': 0.0}
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return {'rate': round(1.0/value['factor'], 6)}
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def on_change_rate(self, cursor, user, ids, value, context=None):
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if value.get('rate', 0.0) == 0.0:
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return {'factor': 0.0}
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return {'factor': round(1.0/value['rate'], 6)}
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def __init__(self):
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super(Uom, self).__init__()
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self._sql_constraints += [
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('non_zero_rate_factor', 'CHECK((rate != 0.0) or (factor != 0.0))',
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'Rate and factor can not be both equal to zero.')
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]
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@staticmethod
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def round(number, precision=1.0):
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return round(number / precision) * precision
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@staticmethod
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def check_factor_and_rate(values):
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factor = None
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rate = None
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if ('factor' not in values) and ('rate' not in values):
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return values
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elif 'factor' in values and 'rate' in values:
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if values['rate'] == 0.0 and values['factor'] == 0.0:
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return values
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elif values['factor'] != 0.0 and \
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values['rate'] != 0.0:
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if values['rate'] == round(1.0/values['factor'], 6) or \
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values['factor'] == round(1.0/values['rate'], 6):
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return values
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else:
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factor = round(1.0/values['rate'], 6)
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elif values['rate'] != 0.0 and \
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values['factor'] != round(1.0/values['rate'], 6):
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factor = round(1.0/values['rate'], 6)
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elif values['factor'] != 0.0 and \
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values['rate'] != round(1.0/values['factor'], 6):
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rate = round(1.0/values['factor'], 6)
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else:
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return values
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elif 'rate' in values:
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if values['rate'] != 0.0:
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factor = round(1.0/values['rate'], 6)
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else:
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factor = 0.0
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elif 'factor' in values:
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if values['factor'] != 0.0:
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rate = round(1.0/values['factor'], 6)
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else:
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rate = 0.0
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if rate != None or factor != None:
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values = values.copy()
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if rate != None: values['rate'] = rate
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if factor != None: values['factor'] = factor
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return values
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def create(self, cursor, user, values, context=None):
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values = self.check_factor_and_rate(values)
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return super(Uom, self).create(cursor, user, values, context)
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def write(self, cursor, user, ids, values, context=None):
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values = self.check_factor_and_rate(values)
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return super(Uom, self).write(cursor, user, ids, values, context)
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def compute_qty(self, cursor, user, from_uom, qty, to_uom=False,
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round=True, context=None):
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"""
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Convert quantity for given uom's. from_uom and to_uom should
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be browse records.
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"""
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if not from_uom or not qty or not to_uom:
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return qty
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if from_uom.category.id <> to_uom.category.id:
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return qty
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if from_uom.factor >= 1.0: # Choose the more precise field.
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amount = qty * from_uom.factor
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else:
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amount = qty / from_uom.rate
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if to_uom:
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if to_uom.factor >= 1.0:
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amount = amount / to_uom.factor
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else:
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amount = amount * to_uom.rate
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if round:
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amount = self.round(amount, to_uom.rounding)
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return amount
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def compute_price(self, cursor, user, from_uom, price, to_uom=False,
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context=None):
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"""
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Convert price for given uom's. from_uom and to_uom should be
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browse records.
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"""
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if not from_uom or not price or not to_uom:
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return price
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if from_uom.category.id <> to_uom.category.id:
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return price
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if from_uom.factor >= 1.0:
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new_price = price / Decimal(str(from_uom.factor))
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else:
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new_price = price * Decimal(str(from_uom.rate))
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if to_uom.factor >= 1.0:
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new_price = new_price * Decimal(str(to_uom.factor))
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else:
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new_price = new_price / Decimal(str(to_uom.rate))
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return new_price
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def search(self, cursor, user, args, offset=0, limit=None, order=None,
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context=None, count=False, query_string=False):
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product_obj = self.pool.get('product.product')
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args = args[:]
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def process_args(args):
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i = 0
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while i < len(args):
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#add test for xmlrpc that doesn't handle tuple
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if (isinstance(args[i], tuple) \
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or (isinstance(args[i], list) and len(args[i]) > 2 \
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and args[i][1] in OPERATORS)) \
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and args[i][0] == 'category' \
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and isinstance(args[i][2], (list, tuple)) \
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and len(args[i][2]) == 2 \
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and args[i][2][1] in ('product.default_uom.category',
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'uom.category'):
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if not args[i][2][0]:
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args[i] = ('id', '!=', '0')
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else:
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if args[i][2][1] == 'product.default_uom.category':
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product = product_obj.browse(cursor, user,
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args[i][2][0], context=context)
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category_id = product.default_uom.category.id
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else:
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uom = self.browse(cursor, user, args[i][2][0],
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context=context)
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category_id = uom.category.id
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args[i] = (args[i][0], args[i][1], category_id)
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elif isinstance(args[i], list):
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process_args(args[i])
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i += 1
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process_args(args)
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return super(Uom, self).search(cursor, user, args, offset=offset,
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limit=limit, order=order, context=context, count=count,
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query_string=query_string)
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Uom()
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