How can I make the Vuetify Combobox return the id instead of the value?

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To make the Vuetify Combobox return the id instead of the value, you can use the item-value prop. This prop specifies which object property to use as the value of the selected item. By default, it uses the "value" property of the object.

Here's an example of how to use the item-value prop to return the id property of each item:

<template>
  <v-combobox
    v-model="selectedItem"
    :items="items"
    item-text="text"
    item-value="id"
  />
</template>

<script>
export default {
  data() {
    return {
      selectedItem: null,
      items: [
        { id: 1, text: 'Item 1' },
        { id: 2, text: 'Item 2' },
        { id: 3, text: 'Item 3' },
      ],
    }
  },
}
</script>

In this example, the items array contains objects with id and text properties. The item-value prop is set to "id", which means that the selectedItem property will contain the id of the selected item, rather than its text value.