File: product.py

package info (click to toggle)
tryton-modules-purchase 5.0.6-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, sid
  • size: 1,252 kB
  • sloc: python: 2,723; xml: 1,049; makefile: 6; sh: 3
file content (384 lines) | stat: -rw-r--r-- 14,297 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
# This file is part of Tryton.  The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
import datetime

from sql import Literal
from sql.aggregate import Count

from trytond.model import ModelView, ModelSQL, MatchMixin, fields, \
    sequence_ordered
from trytond.pyson import Eval, If
from trytond.pool import Pool, PoolMeta
from trytond.transaction import Transaction

from trytond.modules.product import price_digits

__all__ = ['Template', 'Product', 'ProductSupplier', 'ProductSupplierPrice']


class Template(metaclass=PoolMeta):
    __name__ = "product.template"
    purchasable = fields.Boolean('Purchasable', states={
            'readonly': ~Eval('active', True),
            }, depends=['active'])
    product_suppliers = fields.One2Many('purchase.product_supplier',
        'product', 'Suppliers', states={
            'readonly': ~Eval('active', True),
            'invisible': (~Eval('purchasable', False)
                | ~Eval('context', {}).get('company')),
            }, depends=['active', 'purchasable'])
    purchase_uom = fields.Many2One('product.uom', 'Purchase UOM', states={
            'readonly': ~Eval('active'),
            'invisible': ~Eval('purchasable'),
            'required': Eval('purchasable', False),
            },
        domain=[('category', '=', Eval('default_uom_category'))],
        depends=['active', 'purchasable', 'default_uom_category'])

    @classmethod
    def __setup__(cls):
        super(Template, cls).__setup__()
        cls._error_messages.update({
                'change_purchase_uom': ('Purchase prices are based '
                    'on the purchase uom.'),
                })

    @fields.depends('default_uom', 'purchase_uom', 'purchasable')
    def on_change_default_uom(self):
        try:
            super(Template, self).on_change_default_uom()
        except AttributeError:
            pass
        if self.default_uom:
            if self.purchase_uom:
                if self.default_uom.category != self.purchase_uom.category:
                    self.purchase_uom = self.default_uom
            else:
                self.purchase_uom = self.default_uom

    @classmethod
    def view_attributes(cls):
        return super(Template, cls).view_attributes() + [
            ('//page[@id="suppliers"]', 'states', {
                    'invisible': ~Eval('purchasable'),
                    })]

    @classmethod
    def write(cls, *args):
        actions = iter(args)
        for templates, values in zip(actions, actions):
            if not values.get("purchase_uom"):
                continue
            for template in templates:
                if not template.purchase_uom:
                    continue
                if template.purchase_uom.id == values["purchase_uom"]:
                    continue
                for product in template.products:
                    if not product.product_suppliers:
                        continue
                    cls.raise_user_warning(
                            '%s@product_template' % template.id,
                            'change_purchase_uom')
        super(Template, cls).write(*args)

    @classmethod
    def copy(cls, templates, default=None):
        pool = Pool()
        ProductSupplier = pool.get('purchase.product_supplier')
        if default is None:
            default = {}
        else:
            default = default.copy()

        copy_suppliers = 'product_suppliers' not in default
        default.setdefault('product_suppliers', None)
        new_templates = super().copy(templates, default)
        if copy_suppliers:
            old2new = {}
            to_copy = []
            for template, new_template in zip(templates, new_templates):
                to_copy.extend(
                    ps for ps in template.product_suppliers if not ps.product)
                old2new[template.id] = new_template.id
            if to_copy:
                ProductSupplier.copy(to_copy, {
                        'template': lambda d: old2new[d['template']],
                        })
        return new_templates


class Product(metaclass=PoolMeta):
    __name__ = 'product.product'

    purchase_price_uom = fields.Function(fields.Numeric(
            "Purchase Price", digits=price_digits), 'get_purchase_price_uom')

    @classmethod
    def get_purchase_price_uom(cls, products, name):
        quantity = Transaction().context.get('quantity') or 0
        return cls.get_purchase_price(products, quantity=quantity)

    @classmethod
    def get_purchase_price(cls, products, quantity=0):
        '''
        Return purchase price for product ids.
        The context that can have as keys:
            uom: the unit of measure
            supplier: the supplier party id
            currency: the currency id for the returned price
        '''
        pool = Pool()
        Uom = pool.get('product.uom')
        User = pool.get('res.user')
        Currency = pool.get('currency.currency')
        Date = pool.get('ir.date')
        ProductSupplier = pool.get('purchase.product_supplier')
        ProductSupplierPrice = pool.get('purchase.product_supplier.price')

        today = Date.today()
        context = Transaction().context
        prices = {}

        assert len(products) == len(set(products)), "Duplicate products"

        uom = None
        if context.get('uom'):
            uom = Uom(context['uom'])

        currency = None
        if context.get('currency'):
            currency = Currency(context['currency'])

        user = User(Transaction().user)

        for product in products:
            prices[product.id] = product.cost_price
            default_uom = product.default_uom
            default_currency = (user.company.currency if user.company
                else None)
            if not uom or default_uom.category != uom.category:
                product_uom = default_uom
            else:
                product_uom = uom
            pattern = ProductSupplier.get_pattern()
            product_suppliers = product.product_suppliers
            if context.get('product_supplier'):
                for product_supplier in product.product_suppliers:
                    if product_supplier.id == context['product_supplier']:
                        product_suppliers = [product_supplier]
                        break
            for product_supplier in product_suppliers:
                if product_supplier.match(pattern):
                    pattern = ProductSupplierPrice.get_pattern()
                    for price in product_supplier.prices:
                        if price.match(quantity, product_uom, pattern):
                            prices[product.id] = price.unit_price
                            default_uom = product_supplier.uom
                            default_currency = product_supplier.currency
                    break
            prices[product.id] = Uom.compute_price(
                default_uom, prices[product.id], product_uom)
            if currency and default_currency:
                date = context.get('purchase_date') or today
                with Transaction().set_context(date=date):
                    prices[product.id] = Currency.compute(default_currency,
                        prices[product.id], currency, round=False)
        return prices

    @classmethod
    def copy(cls, products, default=None):
        pool = Pool()
        ProductSupplier = pool.get('purchase.product_supplier')
        if default is None:
            default = {}
        else:
            default = default.copy()

        copy_suppliers = 'product_suppliers' not in default
        if 'template' in default:
            default.setdefault('product_suppliers', None)
        new_products = super().copy(products, default)
        if 'template' in default and copy_suppliers:
            template2new = {}
            to_copy = []
            for product, new_product in zip(products, new_products):
                if product.product_suppliers:
                    to_copy.extend(product.product_suppliers)
                    template2new[product.template.id] = new_product.template.id
            if to_copy:
                ProductSupplier.copy(to_copy, {
                        'product': lambda d: template2new[d['product']],
                        })
        return new_products


class ProductSupplier(sequence_ordered(), ModelSQL, ModelView, MatchMixin):
    'Product Supplier'
    __name__ = 'purchase.product_supplier'
    product = fields.Many2One('product.template', 'Product', required=True,
            ondelete='CASCADE', select=True)
    party = fields.Many2One('party.party', 'Supplier', required=True,
        ondelete='CASCADE', select=True)
    name = fields.Char('Name', size=None, translate=True, select=True)
    code = fields.Char('Code', size=None, select=True)
    prices = fields.One2Many('purchase.product_supplier.price',
            'product_supplier', 'Prices')
    company = fields.Many2One('company.company', 'Company', required=True,
        ondelete='CASCADE', select=True,
        domain=[
            ('id', If(Eval('context', {}).contains('company'), '=', '!='),
                Eval('context', {}).get('company', -1)),
            ])
    lead_time = fields.TimeDelta('Lead Time')
    currency = fields.Many2One('currency.currency', 'Currency', required=True,
        ondelete='RESTRICT')

    @classmethod
    def __register__(cls, module_name):
        transaction = Transaction()
        cursor = transaction.connection.cursor()
        table = cls.__table_handler__(module_name)
        sql_table = cls.__table__()

        super(ProductSupplier, cls).__register__(module_name)

        # Migration from 3.8: change delivery_time inte timedelta lead_time
        if table.column_exist('delivery_time'):
            cursor.execute(*sql_table.select(
                    sql_table.id, sql_table.delivery_time))
            for id_, delivery_time in cursor.fetchall():
                if delivery_time is None:
                    continue
                lead_time = datetime.timedelta(days=delivery_time)
                cursor.execute(*sql_table.update(
                        [sql_table.lead_time],
                        [lead_time],
                        where=sql_table.id == id_))
            table.drop_column('delivery_time')

    @staticmethod
    def default_company():
        return Transaction().context.get('company')

    @staticmethod
    def default_currency():
        Company = Pool().get('company.company')
        if Transaction().context.get('company'):
            company = Company(Transaction().context['company'])
            return company.currency.id

    @fields.depends('party')
    def on_change_party(self):
        cursor = Transaction().connection.cursor()
        self.currency = self.default_currency()
        if self.party:
            table = self.__table__()
            cursor.execute(*table.select(table.currency,
                    where=table.party == self.party.id,
                    group_by=table.currency,
                    order_by=Count(Literal(1)).desc))
            row = cursor.fetchone()
            if row:
                self.currency, = row

    def get_rec_name(self, name):
        if self.code:
            name = self.name or self.product.name
            return '[' + self.code + '] ' + name
        else:
            return self.name or self.product.rec_name

    @classmethod
    def search_rec_name(cls, name, clause):
        if clause[1].startswith('!') or clause[1].startswith('not '):
            bool_op = 'AND'
        else:
            bool_op = 'OR'
        domain = [bool_op,
            ('product',) + tuple(clause[1:]),
            ('party',) + tuple(clause[1:]),
            ('code',) + tuple(clause[1:]),
            ('name',) + tuple(clause[1:]),
            ]
        return domain

    @property
    def uom(self):
        return self.product.purchase_uom

    def compute_supply_date(self, date=None):
        '''
        Compute the supply date for the Product Supplier at the given date
        '''
        Date = Pool().get('ir.date')

        if not date:
            date = Date.today()
        if self.lead_time is None:
            return datetime.date.max
        return date + self.lead_time

    def compute_purchase_date(self, date):
        '''
        Compute the purchase date for the Product Supplier at the given date
        '''
        Date = Pool().get('ir.date')

        if self.lead_time is None or date is None:
            return Date.today()
        return date - self.lead_time

    @staticmethod
    def get_pattern():
        context = Transaction().context
        return {
            'party': context.get('supplier'),
            }


class ProductSupplierPrice(
        sequence_ordered(), ModelSQL, ModelView, MatchMixin):
    'Product Supplier Price'
    __name__ = 'purchase.product_supplier.price'
    product_supplier = fields.Many2One('purchase.product_supplier',
            'Supplier', required=True, ondelete='CASCADE')
    quantity = fields.Float(
        "Quantity",
        required=True,
        domain=[('quantity', '>=', 0)],
        help='Minimal quantity')
    unit_price = fields.Numeric('Unit Price', required=True,
        digits=price_digits)

    @classmethod
    def __register__(cls, module_name):
        cursor = Transaction().connection.cursor()
        table = cls.__table_handler__(module_name)
        sql_table = cls.__table__()

        fill_sequence = not table.column_exist('sequence')

        super(ProductSupplierPrice, cls).__register__(module_name)

        # Migration from 3.2: replace quantity by sequence for order
        if fill_sequence:
            cursor.execute(*sql_table.update(
                    [sql_table.sequence], [sql_table.quantity]))

    @staticmethod
    def default_quantity():
        return 0.0

    @staticmethod
    def get_pattern():
        return {}

    def match(self, quantity, uom, pattern):
        pool = Pool()
        Uom = pool.get('product.uom')
        test_quantity = Uom.compute_qty(
            self.product_supplier.uom, self.quantity, uom)
        if test_quantity > abs(quantity):
            return False
        return super(ProductSupplierPrice, self).match(pattern)