[IMP] web: add support of "sample" attribute in views

With this commit, it is now possible to display sample (fake)
data in empty views, in the hope of easing user onboarding.
This can be enabled (in list and kanban views) with attribute
sample="1" on the arch root element. In this case, if there is
no data to display, sample data will be generated based on
heuristics (depending on field types and names). This can be
used in addition to the no content helper.

Task 2232801

X-original-commit: 7c8e627ff5029cb539d702705e5ce53d658c76ed
Co-authored-by: Aaron Bohy <aab@odoo.com>
Co-authored-by: Mathieu Duckerts-Antoine <dam@odoo.com>
Co-authored-by: Jérémy Hennecart <jeh@odoo.com>
Co-authored-by: Julien Mougenot <jum@odoo.com>

1 files changed, 12 insertions, 5 deletions

diff --git a/addons/web/static/src/js/core/mvc.js b/addons/web/static/src/js/core/mvc.js
index d7091cc4843..23f2b44b274 100644
--- a/addons/web/static/src/js/core/mvc.js
+++ b/addons/web/static/src/js/core/mvc.js
@@ -109,9 +109,11 @@ var Controller = Widget.extend({
      * @param {Model} model
      * @param {Renderer} renderer
      * @param {Object} params
+     * @param {any} [params.handle=null]
      */
     init: function (parent, model, renderer, params) {
         this._super.apply(this, arguments);
+        this.handle = params.handle || null;
         this.model = model;
         this.renderer = renderer;
     },
@@ -178,11 +180,13 @@ var Factory = Class.extend({
         var self = this;
         var model = this.getModel(parent);
         return Promise.all([this._loadData(model), ajax.loadLibs(this)]).then(function (result) {
-            var state = result[0];
+            const { state, handle } = result[0];
             var renderer = self.getRenderer(parent, state);
             var Controller = self.Controller || self.config.Controller;
+            const initialState = model.get(handle);
             var controllerParams = _.extend({
-                initialState: state,
+                initialState,
+                handle,
             }, self.controllerParams);
             var controller = new Controller(parent, model, renderer, controllerParams);
             model.setParent(controller);
@@ -221,13 +225,16 @@ var Factory = Class.extend({
      *
      * @private
      * @param {Model} model a Model instance
+     * @param {Object} [options={}]
+     * @param {boolean} [options.withSampleData=true]
      * @returns {Promise<*>} a promise that resolves to the value returned by
      *   the get method from the model
      * @todo: get rid of loadParams (use modelParams instead)
      */
-    _loadData: function (model) {
-        return model.load(this.loadParams).then(function () {
-            return model.get.apply(model, arguments);
+    _loadData: function (model, options = {}) {
+        options.withSampleData = 'withSampleData' in options ? options.withSampleData : true;
+        return model.load(this.loadParams).then(function (handle) {
+            return { state: model.get(handle, options), handle };
         });
     },
 });