[IMP] intrastat_base: A lot of imps:

* Add product_origin_country_id on declaration/computation lines

  Copy incoterms and destination country from SO to invoice when invoicing from SO
  We need weight even when supplementary units is used
  Small cleanups and enhancements

* Add support for accessory costs

  Add default values for intrastat transaction on company
  Code cleanup

* If rounded weight is 0, put 1

  Take into account the taxes for B2C
  Small code cleanup

* Remove field exclude_from_intrastat

  Re-organise view of intrastat.product.declaration

* Add option intrastat_accessory_costs on company

  Set more fields as invisible (localisation should put them visible if they need it)
  Fix handling of suppl. units when hs_code is empty on invoice line (but set on product)
  Small usability enhancements

* Warning -> UserError

* Inspired by the PR https://github.com/akretion/account-financial-reporting/pull/8 of Luc de Meyer

* total_amount is a sum of integers, so it should be an integer

  Add transport mode in computation tree view

* Demo VAT number should be on EU customers

intrastat_base/models/intrastat_common.py

@@ -1,4 +1,4 @@
-# -*- encoding: utf-8 -*-
+# -*- coding: utf-8 -*-
 ##############################################################################
 #
 #    Intrastat base module for Odoo
@@ -21,8 +21,7 @@
 ##############################################################################
 
 from openerp import models, fields, api, tools, _
-from openerp.exceptions import Warning, ValidationError
-from dateutil.relativedelta import relativedelta
+from openerp.exceptions import Warning as UserError
 import logging
 
 logger = logging.getLogger(__name__)
@@ -36,7 +35,7 @@ class IntrastatCommon(models.AbstractModel):
     @api.one
     @api.depends('declaration_line_ids.amount_company_currency')
     def _compute_numbers(self):
-        total_amount = 0.0
+        total_amount = 0  # it is an integer
         num_lines = 0
         for line in self.declaration_line_ids:
             total_amount += line.amount_company_currency
@@ -44,34 +43,18 @@ class IntrastatCommon(models.AbstractModel):
         self.num_decl_lines = num_lines
         self.total_amount = total_amount
 
-    @api.one
-    @api.depends('start_date')
-    def _compute_dates(self):
-        start_date_dt = fields.Date.from_string(self.start_date)
-        self.end_date = fields.Date.to_string(
-            start_date_dt + relativedelta(day=31))
-        self.year_month = start_date_dt.strftime('%Y-%m')
-
-    @api.one
-    def _check_start_date(self):
-        '''Check that the start date is the first day of the month'''
-        datetime_to_check = fields.Date.from_string(self.start_date)
-        if datetime_to_check.day != 1:
-            raise ValidationError(
-                _('The start date must be the first day of the month'))
-
     @api.one
     def _check_generate_lines(self):
         """Check wether all requirements are met for generating lines."""
         if not self.company_id:
-            raise Warning(_("Company not yet set on intrastat report."))
+            raise UserError(_("Company not yet set on intrastat report."))
         company_obj = self.company_id
         if not company_obj.country_id:
-            raise Warning(
+            raise UserError(
                 _("The country is not set on the company '%s'.")
                 % company_obj.name)
         if company_obj.currency_id.name != 'EUR':
-            raise Warning(
+            raise UserError(
                 _("The company currency must be 'EUR', but is currently '%s'.")
                 % company_obj.currency_id.name)
         return True
@@ -79,7 +62,7 @@ class IntrastatCommon(models.AbstractModel):
     @api.one
     def _check_generate_xml(self):
         if not self.company_id.partner_id.vat:
-            raise Warning(
+            raise UserError(
                 _("The VAT number is not set for the partner '%s'.")
                 % self.company_id.partner_id.name)
         return True
@@ -102,7 +85,7 @@ class IntrastatCommon(models.AbstractModel):
                 "The XML file is invalid against the XML Schema Definition")
             logger.warning(xml_string)
             logger.warning(e)
-            raise Warning(
+            raise UserError(
                 _("The generated XML file is not valid against the official "
                     "XML Schema Definition. The generated XML file and the "
                     "full error have been written in the server logs. "
@@ -181,7 +164,7 @@ class IntrastatCommon(models.AbstractModel):
     def unlink(self):
         for intrastat in self:
             if intrastat.state == 'done':
-                raise Warning(
+                raise UserError(
                     _('Cannot delete the declaration %s '
                         'because it is in Done state') % self.year_month)
         return super(IntrastatCommon, self).unlink()