[IMP] website: improve setting ga_client_id from dashboard

It now update the website settings parameter use_google_analytics_dashboard
so that the settings are correctly updated with the user choice.

Implementation is changed so that the dashboard uses a jsonRpc call instead
of directly calling ir_config_parameter set_param.

addons/website/controllers/backend.py

@@ -35,3 +35,25 @@ class WebsiteBackend(http.Controller):
                 ga_client_id = request.env['ir.config_parameter'].sudo().get_param('google_management_client_id', default='')
                 dashboard_data['dashboards']['visits']['ga_client_id'] = ga_client_id
         return dashboard_data
+
+    @http.route('/website/dashboard/set_ga_client_id', type='json', auth='user')
+    def website_set_ga_client_id(self, ga_client_id):
+        if not request.env.user.has_group('base.group_system'):
+            return {
+                'error': {
+                    'title': 'Access Error',
+                    'message': 'You do not have sufficient rights to perform that action.',
+                }
+            }
+        if not ga_client_id.endswith('.apps.googleusercontent.com') or ga_client_id.startswith(" "):
+            return {
+                'error': {
+                    'title': 'Incorrect Client ID',
+                    'message': 'The Google Analytics Client ID you have entered seems incorrect.',
+                }
+            }
+        request.env['website.config.setting'].create({
+            'use_google_analytics_dashboard': True,
+            'google_management_client_id': ga_client_id,
+        })
+        return True

addons/website/static/src/js/website.backendDashboard.js

@@ -96,21 +96,19 @@ var Dashboard = Widget.extend(ControlPanelMixin, {
     },
 
     on_save_ga_client_id: function(ga_client_id) {
-
-        if (!ga_client_id.endsWith(".apps.googleusercontent.com") || ga_client_id.startsWith(" ")) {
-            this.do_warn(_t('Incorrect Client ID'), _t('The Google Analytics Client ID you have entered seems incorrect.'));
-            return;
-        }
-
         var self = this;
-        this._rpc({
-                model: 'ir.config_parameter',
-                method: 'set_param',
-                args: ['google_management_client_id', ga_client_id],
-            })
-            .then(function(){
-                self.on_date_range_button('week');
-            });
+        return this._rpc({
+            route: '/website/dashboard/set_ga_client_id',
+            params: {
+                'ga_client_id': ga_client_id
+            },
+        }).then(function (result) {
+            if (result.error) {
+                self.do_warn(result.error.title, result.error.message);
+                return;
+            }
+            self.on_date_range_button('week');
+        });
     },
 
     render_dashboards: function() {