diff --git a/addons/website_crm_partner_assign/models/crm_lead.py b/addons/website_crm_partner_assign/models/crm_lead.py
index 215b96e9457..3bb97901d9d 100644
--- a/addons/website_crm_partner_assign/models/crm_lead.py
+++ b/addons/website_crm_partner_assign/models/crm_lead.py
@@ -5,7 +5,7 @@ import random
 
 from odoo import api, fields, models, _
 from odoo.addons.base_geolocalize.models.res_partner import geo_find, geo_query_address
-from odoo.exceptions import AccessDenied
+from odoo.exceptions import AccessDenied, AccessError
 
 class CrmLead(models.Model):
     _inherit = "crm.lead"
@@ -270,3 +270,35 @@ class CrmLead(models.Model):
         return {
             'id': lead.id
         }
+
+    #
+    #   DO NOT FORWARD PORT IN MASTER
+    #   instead, crm.lead should implement portal.mixin
+    #
+    @api.multi
+    def get_access_action(self, access_uid=None):
+        """ Instead of the classic form view, redirect to the online document for
+        portal users or if force_website=True in the context. """
+        self.ensure_one()
+
+        user, record = self.env.user, self
+        if access_uid:
+            try:
+                record.check_access_rights('read')
+                record.check_access_rule("read")
+            except AccessError:
+                return super(CrmLead, self).get_access_action(access_uid)
+            user = self.env['res.users'].sudo().browse(access_uid)
+            record = self.sudo(user)
+        if user.share or self.env.context.get('force_website'):
+            try:
+                record.check_access_rights('read')
+                record.check_access_rule('read')
+            except AccessError:
+                pass
+            else:
+                return {
+                    'type': 'ir.actions.act_url',
+                    'url': '/my/opportunity/%s' % record.id,
+                }
+        return super(CrmLead, self).get_access_action(access_uid)
diff --git a/addons/website_crm_partner_assign/tests/test_partner_assign.py b/addons/website_crm_partner_assign/tests/test_partner_assign.py
index 1945e6bd2e4..137cd773c33 100644
--- a/addons/website_crm_partner_assign/tests/test_partner_assign.py
+++ b/addons/website_crm_partner_assign/tests/test_partner_assign.py
@@ -158,3 +158,8 @@ class TestPartnerLeadPortal(TestCrmCases):
 
         self.assertEqual(opportunity.team_id, salesmanteam, 'The created opportunity should have the same team as the salesman default team of the opportunity creator.')
         self.assertEqual(opportunity.partner_assigned_id, self.portal_partner, 'Assigned Partner of created opportunity is the (portal) creator.')
+
+    def test_portal_mixin_url(self):
+        record_action = self.lead.get_access_action(self.portal_user.id)
+        self.assertEqual(record_action['url'], '/my/opportunity/%s' % self.lead.id)
+        self.assertEqual(record_action['type'], 'ir.actions.act_url')