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modules/purchase/configuration.py

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+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from trytond.model import (
+    ModelSingleton, ModelSQL, ModelView, ValueMixin, fields)
+from trytond.modules.company.model import (
+    CompanyMultiValueMixin, CompanyValueMixin)
+from trytond.pool import Pool
+from trytond.pyson import Eval, Id, TimeDelta
+
+purchase_invoice_method = fields.Selection(
+    'get_purchase_invoice_method', "Invoice Method")
+
+
+def get_purchase_methods(field_name):
+    @classmethod
+    def func(cls):
+        pool = Pool()
+        Purchase = pool.get('purchase.purchase')
+        return Purchase.fields_get([field_name])[field_name]['selection']
+    return func
+
+
+class Configuration(
+        ModelSingleton, ModelSQL, ModelView, CompanyMultiValueMixin):
+    __name__ = 'purchase.configuration'
+    purchase_sequence = fields.MultiValue(fields.Many2One(
+            'ir.sequence', "Purchase Sequence", required=True,
+            domain=[
+                ('company', 'in',
+                    [Eval('context', {}).get('company', -1), None]),
+                ('sequence_type', '=',
+                    Id('purchase', 'sequence_type_purchase')),
+                ]))
+    purchase_invoice_method = fields.MultiValue(purchase_invoice_method)
+    get_purchase_invoice_method = get_purchase_methods('invoice_method')
+    purchase_process_after = fields.TimeDelta(
+        "Process Purchase after",
+        domain=['OR',
+            ('purchase_process_after', '=', None),
+            ('purchase_process_after', '>=', TimeDelta()),
+            ],
+        help="The grace period during which confirmed purchase "
+        "can still be reset to draft.\n"
+        "Applied only if a worker queue is activated.")
+
+    @classmethod
+    def multivalue_model(cls, field):
+        pool = Pool()
+        if field == 'purchase_invoice_method':
+            return pool.get('purchase.configuration.purchase_method')
+        if field == 'purchase_sequence':
+            return pool.get('purchase.configuration.sequence')
+        return super().multivalue_model(field)
+
+    @classmethod
+    def default_purchase_sequence(cls, **pattern):
+        return cls.multivalue_model(
+            'purchase_sequence').default_purchase_sequence()
+
+    @classmethod
+    def default_purchase_invoice_method(cls, **pattern):
+        return cls.multivalue_model(
+            'purchase_invoice_method').default_purchase_invoice_method()
+
+
+class ConfigurationSequence(ModelSQL, CompanyValueMixin):
+    __name__ = 'purchase.configuration.sequence'
+    purchase_sequence = fields.Many2One(
+        'ir.sequence', "Purchase Sequence", required=True,
+        domain=[
+            ('company', 'in', [Eval('company', -1), None]),
+            ('sequence_type', '=',
+                Id('purchase', 'sequence_type_purchase')),
+            ])
+
+    @classmethod
+    def default_purchase_sequence(cls):
+        pool = Pool()
+        ModelData = pool.get('ir.model.data')
+        try:
+            return ModelData.get_id('purchase', 'sequence_purchase')
+        except KeyError:
+            return None
+
+
+class ConfigurationPurchaseMethod(ModelSQL, ValueMixin):
+    __name__ = 'purchase.configuration.purchase_method'
+    purchase_invoice_method = purchase_invoice_method
+    get_purchase_invoice_method = get_purchase_methods('invoice_method')
+
+    @classmethod
+    def default_purchase_invoice_method(cls):
+        return 'order'