/Html/Thymeleaf optional fragment parameter

Thymeleaf optional fragment parameter


The best way to allow optional parameter for a fragment is to declare them with "th:with" and describe them with meaningful default values.

So, you define explicit your mandatory and your optional values in the declaration tag of your fragment.

Here is simple example, with 1 mandatory and 2 optional parameters:

<div th:fragment="printGreetings (name)" th:with="title=${title} ?: 'Mr.', greeting=${greeting} ?: 'Hello'">
    <span th:text="${greeting}">Hello</span>
    <span th:text="${title}">Mr.</span>
    <span th:text="${name}">John Doe</span>
</div>

You can then call it like the following:

<div th:replace="fragments :: printGreetings (name='daniel')">
   Hello Mr. Daniel
</div>
<div th:replace="fragments :: printGreetings (name='Lea', title='Ms.')>
   Hello Ms. Lea
</div>
<div th:replace="fragments :: printGreetings (name='Lea', title='Ms.', greeting='Hi')>
   Hi Ms. Lea
</div>

(Please note that all values inside the tags are replaced by the dynamic ones. It's just for better reading.)

Source: stackoverflow.com

Similar codes

1 vote335 views4 answers
Ex
Html
1 vote320 views1 answer
Success green color code
Html
-1 vote287 views1 answer
Is it easy to learn katakana if i know hiragana
Html
-1 vote275 views1 answer
Negritas html
Html
0 vote300 views1 answer
Animate image or text html
Html
0 vote293 views1 answer
Tailwind CSS Button group
Html
0 vote312 views2 answers
Game html
Html
10 votes315 views3 answers
Html lazy loading images
Html
133 votes289 views6 answers
Open website in new tab html
Html
17 votes346 views6 answers
Bootstrap Collapse
Html