检查清单包含Twig模板中的值

Question

I have this block of code:

<div>
    <dt class="question">Language</dt>
    <dd class="answer">
    {% if Wrapper.arrangements['signLanguage'] is defined %}
        Sign Language              
    {% else %}
        Not required
    {% endif %}
    </dd>
</div>

and then:

@Value
@Builder
public class Wrapper {

    private List<String> arrangements;

}

Which always prints 'Not required' even when my Java Wrapper.arrangements object contains "signLanguage". Anyone spot what i'm doing wrong?

Answer 1

You are trying to access Wrapper.arrangements in the same way you would a static function. It is not static and is private so you will need to add the wrapper to your model presumably named "wrapper" and have a method named getArrangement that returns your arrangements list then in your template you will have the following:

{% if wrapper.getArrangements.contains('signLanguage') is defined %}