[IMP] using qweb template in _format function instead of return the html part directly

web_widget_radio_tree/static/src/js/widget.js

@@ -6,11 +6,10 @@ openerp.web_widget_radio_tree = function (instance) {
 
     instance.web.list.RadioTreeColumn = instance.web.list.Column.extend({
         _format: function (row_data, options) {
-            return _.template(
-                '<input type="radio" name="<%-name%>" <%-checked%> readonly="readonly"></input>', {
-                    name: options.model + '_' + this.id,
-                    checked: row_data[this.id].value ? 'checked' : '',
-                });
+            return QWeb.render('RadioTreeColumn', {
+                name: options.model + '_' + this.id,
+                checked: row_data[this.id].value ? {checked: ''} : {},
+            });
         }
     });
 

web_widget_radio_tree/static/src/xml/widget.xml

@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <templates>
+    <t t-name="RadioTreeColumn"
+        ><input type="radio" t-att-name="name" t-att="checked" readonly="readonly"></input>
+    </t>
     <t t-name="RadioTree">
         <span class="oe_form_field oe_form_field_boolean oe_form_field_boolean_radio"
               t-att-style="widget.node.attrs.style">