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how to bind thymeleaf checkbox value to boolean variable in spring ?

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I am trying to bind checkbox value to spring bean as boolean. when use check the checkbox then it will take as true value otherwise false.

This is what I have done so far. I am using `Kotlin` as programming language and `Thymeleaf` with the html page.

html page

this is the bean,

this is the rest controller

the request is hit the controller successfully but how can I bind the value true when the checkbox is check and false otherwise.

Thanks in advance.
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One possible way would be to utilize javascript to change the value of the checkbox on click.
One other option is to utilize two different radio buttons and use the th:field="isPresent" option to specify that return attribute is named "isPresent".

I'm not sure if your stuff is working, but I don't see that you've assigned an object to your form. You can include th:object="AttendanceJson" in your 'form' HTML element.
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