[FIX] web: use "get_formview_id" when opening record from calendar view

Opening a record in a calendar view always showed the default form view when it is not a popup.
Example in CRM: opening an opportunity will always show a lead view.

The fix aims to use the "get_formview_id" method to find the right id of the view that must be shown instead
of using a default id.

opw-774272

addons/web/static/src/js/views/calendar/calendar_controller.js

@@ -247,13 +247,20 @@ var CalendarController = AbstractController.extend({
         id = id && parseInt(id).toString() === id ? parseInt(id) : id;
 
         if (!this.eventOpenPopup) {
-            this.do_action({
-                type: 'ir.actions.act_window',
-                res_id: id,
-                res_model: this.modelName,
-                views: [[this.formViewId || false, 'form']],
-                target: 'current',
-                context: event.context || self.context,
+            this._rpc({
+                model: self.modelName,
+                method: 'get_formview_id',
+                //The event can be called by a view that can have another context than the default one.
+                args: [[id], event.context || self.context],
+            }).then(function (viewId) {
+                self.do_action({
+                    type:'ir.actions.act_window',
+                    res_id: id,
+                    res_model: self.modelName,
+                    views: [[viewId || false, 'form']],
+                    target: 'current',
+                    context: event.context || self.context,
+                });
             });
             return;
         }

addons/web/static/tests/views/calendar_tests.js

@@ -975,6 +975,12 @@ QUnit.module('Views', {
             viewOptions: {
                 initialDate: initialDate,
             },
+            mockRPC: function (route, args) {
+                if (args.method === "get_formview_id") {
+                    return $.Deferred().resolve('A view');
+                }
+                return this._super(route, args);
+            },
         });
 
         // click on an existing event to open the form view
@@ -985,7 +991,7 @@ QUnit.module('Views', {
                     type: "ir.actions.act_window",
                     res_id: 4,
                     res_model: "event",
-                    views: [[false, "form"]],
+                    views: [['A view', "form"]],
                     target: "current",
                     context: {}
                 },
@@ -1103,6 +1109,12 @@ QUnit.module('Views', {
             viewOptions: {
                 initialDate: initialDate,
             },
+            mockRPC: function (route, args) {
+                if (args.method === "get_formview_id") {
+                    return $.when(false);
+                }
+                return this._super(route, args);
+            },
         });
 
         assert.strictEqual(calendar.$('.fc-resizer').length, 0, "should not have resize button");