CODEWITHSUNDEEP
spring-mvcthymeleaf
davvs
davvs

Reputation: 1059

How do I use dynamic content in thymeleaf fragments?

I have a spring project set up with thymeleaf and thymeleaf-layout-dialect.

In this project I have a controller

@Controller
public class HomeController {

     @RequestMapping(value="/", method = RequestMethod.GET)
     public String showHome(Model model){
         return "home";
     }

     @RequestMapping(value="/info", method = RequestMethod.GET)
     public String showInfo(Model model){
         return "info";
     }
}

I also have a layout

...
<html xmlns="http://www.w3.org/1999/xhtml" 
      xmlns:th="http://www.thymeleaf.org"
      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">
<body>
    <div layout:fragment="header">
        dummy header
    </div>
    <div layout:fragment="content">
        dummy contents
    </div>
</body>
</html>

and two views: home.html and info.html which have different unique contents

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" 
      xmlns:th="http://www.thymeleaf.org"
      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout"
      layout:decorator="layout">

  <body>

    <div layout:fragment="content">
        unique contents
    </div>

  </body>

</html>

and a header

<html xmlns="http://www.w3.org/1999/xhtml" 
      xmlns:th="http://www.thymeleaf.org"
      xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">

<body>
    <div layout:fragment="header">
        username is ${username}
    </div>
</body>
</html>

I'd like to print the username in the header without passing it as an attribute on the model in the controller methods. So, Can I run some custom java code before the header is included to find out the username regardless of what controller method is beeing used? What options do I have?

Upvotes: 2

Views: 4119

Answers (1)

Tom Verelst
Tom Verelst

Reputation: 15992

If you would use Spring Security in combination with the Thymeleaf Spring Security module, you can do the following:

<span class="user-info">
    <small>Welcome,</small>
    <span sec:authentication="principal">Username</span>
</span>

If you don't want to use Spring Security, you can write a custom dialect/processor which inserts the username for you.

Upvotes: 1

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