[ADD] website_crm_phone_validation: add phone validation in contact form

This way if phone validation is activated users will have to enter correct
phone numbers. This will greatly help having correct data in customer
tables and improve efficiency of CRM-based flow.

addons/website_crm_phone_validation/__init__.py

+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from . import controllers

addons/website_crm_phone_validation/__manifest__.py

+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+{
+    'name': 'Contact Form Number Validation',
+    'summary': 'Validate and format contact form numbers',
+    'sequence': '9999',
+    'category': 'Hidden',
+    'description': """
+Contact Number Validation on Website
+====================================
+
+Validate contact (phone,mobile,fax) numbers and normalize them on leads and contacts:
+- use the national format for your company country
+- use the international format for all others
+        """,
+    'data': [],
+    'depends': [
+        'crm_phone_validation',
+        'website_crm',
+        'website_form',
+    ],
+    'auto_install': True,
+}

addons/website_crm_phone_validation/controllers/__init__.py

+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from . import website_form

addons/website_crm_phone_validation/controllers/website_form.py

+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+from odoo.addons.website_form.controllers.main import WebsiteForm
+from odoo.http import request, route
+
+import json
+
+
+class WebsiteForm(WebsiteForm):
+
+    def _get_country(self):
+        country_code = request.session.geoip and request.session.geoip.get('country_code') or False
+        if country_code:
+            return request.env['res.country'].sudo().search([('code', '=', country_code)], limit=1)
+        return request.env['res.country']
+
+    def _get_phone_fields_to_validate(self):
+        return ['phone', 'mobile', 'fax']
+
+    @route('/website_form/<string:model_name>', type='http', auth="public", methods=['POST'], website=True)
+    def website_form(self, model_name, **kwargs):
+        model_record = request.env['ir.model'].sudo().search([('model', '=', model_name), ('website_form_access', '=', True)])
+        if not model_record or not hasattr(request.env[model_name], 'phone_format'):
+            return super(WebsiteForm, self).website_form(model_name, **kwargs)
+
+        try:
+            data = self.extract_data(model_record, request.params)
+        except:
+            # no specific management, super will do it
+            pass
+        else:
+            record = data.get('record', {})
+            phone_fields = self._get_phone_fields_to_validate()
+            country = self._get_country()
+            invalid_fields = {}
+            for phone_field in phone_fields:
+                if not record.get(phone_field):
+                    continue
+                number = record[phone_field]
+                try:
+                    request.env[model_name].phone_format(number, country)
+                except Exception as error:
+                    invalid_fields[phone_field] = error.args[0]
+            if invalid_fields:
+                return json.dumps({'error_fields': invalid_fields})
+
+        return super(WebsiteForm, self).website_form(model_name, **kwargs)