[FIX] web_kanban_gauge: correctly render gauge widget

Before this rev., nothing was rendered when the 'gauge' widget was
set on a field (e.g. Sales > Leads Management > Team Assignation),
because the API of the fields in web evolved a lot recently, and
the rendering should now be done in a private function called
'_render', not 'render'.

addons/web_kanban_gauge/static/src/js/kanban_gauge.js

@@ -6,7 +6,7 @@ var field_registry = require('web.field_registry');
 var utils = require('web.utils');
 
 /**
- * Kanban widgets: GaugeWidget
+ * Field widget: GaugeWidget
  * options
  * - max_value: maximum value of the gauge [default: 100]
  * - max_field: get the max_value from the field that must be present in the
@@ -26,7 +26,15 @@ var utils = require('web.utils');
 var GaugeWidget = AbstractField.extend({
     className: "oe_gauge",
 
-    render: function() {
+    //--------------------------------------------------------------------------
+    // Private
+    //--------------------------------------------------------------------------
+
+    /**
+     * @override
+     * @private
+     */
+    _render: function () {
         // parameters
         var max_value = this.nodeOptions.max_value || 100;
         if (this.nodeOptions.max_field) {
@@ -124,4 +132,6 @@ var GaugeWidget = AbstractField.extend({
 
 field_registry.add("gauge", GaugeWidget);
 
+return GaugeWidget;
+
 });

addons/web_kanban_gauge/static/tests/gauge_tests.js

@@ -0,0 +1,49 @@
+odoo.define('web_kanban_gauge.gauge_tests', function (require) {
+"use strict";
+
+var KanbanView = require('web.KanbanView');
+var testUtils = require('web.test_utils');
+
+var createView = testUtils.createView;
+
+QUnit.module('fields', {}, function () {
+
+QUnit.module('basic_fields', {
+    beforeEach: function () {
+        this.data = {
+            partner: {
+                fields: {
+                    int_field: {string: "int_field", type: "integer", sortable: true},
+                },
+                records: [
+                    {id: 1, int_field: 10},
+                    {id: 2, int_field: 4},
+                ]
+            },
+        };
+    }
+}, function () {
+
+    QUnit.module('gauge widget');
+
+    QUnit.test('basic rendering', function (assert) {
+        assert.expect(1);
+
+        var kanban = createView({
+            View: KanbanView,
+            model: 'partner',
+            data: this.data,
+            arch: '<kanban><templates><t t-name="kanban-box">' +
+                    '<div><field name="int_field" widget="gauge"/></div>' +
+                '</t></templates></kanban>',
+        });
+
+        assert.strictEqual(kanban.$('.o_kanban_record:first .oe_gauge svg').length, 1,
+            "should render the gauge widget");
+
+        kanban.destroy();
+    });
+
+});
+});
+});

addons/web_kanban_gauge/views/web_kanban_gauge_templates.xml

@@ -5,4 +5,10 @@
                 <script type="text/javascript" src="/web_kanban_gauge/static/src/js/kanban_gauge.js"></script>
             </xpath>
         </template>
+
+        <template id="qunit_suite" name="gauge_tests" inherit_id="web.qunit_suite">
+            <xpath expr="//t[@t-set='head']" position="inside">
+                <script type="text/javascript" src="/web_kanban_gauge/static/tests/gauge_tests.js"></script>
+            </xpath>
+        </template>
 </odoo>