JTE implementation is broken

[satsen]

The code in JteTemplateEngine.java is like this:

    Map<String, Object> model;
    if (attributes.isEmpty()) {
      model = modelAndView.getModel();
    } else {
      model = new HashMap<>();
      model.putAll(attributes);
      model.putAll(model);
    }

You can see, if there are attributes it just adds the model map to itself. The last code line should have been model.putAll(modelAndView.getModel());. Because of this bug, no pages can be rendered at all as you cannot pass the model.

[satsen]

It was actually this issue which caused me to open #3113. That is still a bug, but just passing a Map with the page model attribute name (defined in template) and page model would have worked for me but this bug makes it impossible to pass anything at all.