Validating a boolean (checkbox) that is required to be true

[TimCorey]

I've included a boolean field in my schema form demo. I would like it to be a "Terms and Conditions" checkbox, where the user is required to check the box before continuing. Making the field a required field does nothing, I assume because false is a value. In order to gain the functionality to require the checkbox to be checked, I added a function to the $validators object. This worked in that the form cannot be processed without the checkbox being checked. However, the user is given no message below the checkbox itself, even though I included a validation message.

Have I missed something? I'd love for the checkbox to get the same validation cues as input fields.

[TimCorey]

After further testing, it seems as though the validation message will fire if I check the box and then uncheck it. It will also show the proper error. This still doesn't happen on submit. That is where I need it to happen.

Just for further clarity, I'm not giving the checkbox an initial value, which means it defaults to false (which is what I want).

[Anthropic]

@TimCorey have you tried using validateOnRender, that would show the error immediately? Failing that can you hide the submit buttons until the checkbox is checked?

[Anthropic]

I do see the issue though and agree it is a bug worth addressing.

[Anthropic]

@TimCorey I am closing this because technically the attribute you want is { const: true } as part of the schema, this isn't supported in tv4, but making ajv or djv available to validate with is already covered in other issues.

Const is part of json-schema v6 json-schema-org/json-schema-spec#58