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modules/account_stock_eu/company.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 fields
+from trytond.pool import Pool, PoolMeta
+
+
+class Company(metaclass=PoolMeta):
+    __name__ = 'company.company'
+
+    intrastat_currency = fields.Function(
+        fields.Many2One('currency.currency', "Intrastat Currency"),
+        'get_intrastat_currency')
+
+    @classmethod
+    def get_intrastat_currency(cls, companies, name):
+        pool = Pool()
+        Currency = pool.get('currency.currency')
+
+        currencies = {}
+        eur = None
+        for company in companies:
+            if company.currency.code == 'EUR':
+                currency = company.currency
+            else:
+                if not eur:
+                    try:
+                        eur, = Currency.search([('code', '=', 'EUR')], limit=1)
+                    except ValueError:
+                        pass
+                currency = eur
+            currencies[company.id] = currency
+        return currencies