Can JTE have the directive function

[leeaee]

I have a custom tag that corresponds to a Java class behind it, which can return custom data. Currently, the sidebar menu is returned by the server, and I hope to automatically retrieve values from a class to handle some common data.

[casid]

Hi @leeaee, I'm not entirely sure what problem you want to solve.

Can you maybe provide a bit more context, or some example jte+Java Code?

[leeaee]

Hi @casid,

I encountered a situation while using JTE that I'm unsure how to handle.

For example, I have customized a JTE select template as shown below:

<select id="cars">
  <option value="volvo">Volvo</option>
  <option value="saab">Saab</option>
  <option value="opel">Opel</option>
  <option value="audi">Audi</option>
</select>

Current Approach

Based on my understanding, the typical approach for using this template is as follows:

Pass the select option values from Spring:

model.addAttribute("options", optionList);

Use the select template in the desired pages.

Problem

The issue arises when this select element is required on multiple pages. In this case, I would have to pass the select options through many Spring methods, wherever the select element is used.

Desired Solution

What I would like to achieve is the ability to automatically retrieve the select options from a single source or a custom tag class whenever the select template is used in JTE. This would help simplify backend code management and avoid having to pass the options repeatedly.

Question

Is there a way to use JTE similarly to how Freemarker uses directives? If so, this would be a perfect solution.

For reference: Freemarker Directives

[casid]

Hey @leeaee,

with jte, there are two options to access data from a template, without the need to pass a parameter to it.

Static method, that is called by the template.

Static method, that is called by the template, with a thread local behind it (if you need that data on a request base, e.g. localized stuff etc.)