How do I write html for form with multiple questions that use radio input type?

I have this quiz in multiple choice format where users can select one option per question and submit their answers at the end. This example shows what I’m trying achieve: [Example code w3school][1]

The problem I’m having is that selecting an option on a question de-selects any previous selection, meaning only one option can be selected for the entire quiz.

This is a section of my form template:

<form @submit.prevent="submit">
<div v-for="question in questions" :key="question.id">
 <jet-label :for="question.question" :value="question.question" class="font-bold text-lg" />
     <div v-for="option in question.options" :key="option.id">
        <jet-label :for="option.option" :value="option.option" />
        <input :id="option.id" type="radio" :value="option.option" 
        :name="option.question_id" v-model="form.options" />
     </div>
</div>
<div class="flex items-center justify-end mt-4">
    <jet-button class="ml-4" :class="{ 'opacity-25': form.processing }" 
     :disabled="form.processing">
       Submit
     </jet-button>
</div>
</form>

And this is the JS to handle user selection binding:

<script setup>
...
import { useForm } from '@inertiajs/inertia-vue3'

defineProps({
    questions: Array
})

const form = useForm({
    options: []
})

...
</script>

The issue probably is that inputs are seen as belonging to one group. How can I group the inputs based on the question id so that the select/deselect radio action is per question? [1]: https://www.w3schools.com/tags/tryit.asp?filename=tryhtml5_input_type_radio

Answer

v-model="form.options" seems to be the problem, all inputs have the same model. Everytime a radio is selected it overwrites the this.options with the option value.

Try:

v-model="form.options[option.question_id]"

if that dosen’t work try to add a custom event handler with @change

BTW: option.question_id is a weird data structure it meight be better to have the id in the question object, because it seems the options lay in an array inside the question object