Is it necessary to utilize multiple v-models in Vue.js 2 in order to bind values to a form component?

Currently, I am developing a basic form component that includes input fields for first name, last name, email, and phone number. I want to pass the user object to prefill the form and make changes using just one v-model.

This is my initial code.

 <div> 
   <myForm v-model="user" />
 </div>

After researching online, I found another way of handling multiple values.

 <div> 
   <myForm v-model:firstName="user.firstName" v-model:lastName="user.lastName"
v-model:email="user.email" v-model:phone="user.phone" />
 </div>

I wonder if there is a method to manage an object passed through a v-model and update it, or if listing specific properties in the object like shown in the second example is necessary?

Answer №1

To establish a dynamic model, you can adopt the following method.

<template>
  <input
    type="text"
    placeholder="First Name"
    v-model="dynamicValue.firstName"
  />
  <!-- Add your form content -->
</template>
<script>
export default {
  name: "App",
  components: {},
  props: {
    value: {
      type: Object,
      default: () => ({
        firstName: "",
        lastName: "",
        email: "",
        phone: "",
      }),
    },
  },
  data() {
    return {};
  },
  computed: {
    dynamicValue: {
      get() {
        return this.value;
      },
      set(value) {
        console.log(value);
        this.$emit("input", value);
      },
    },
  },
};
</script>

Then utilize it as follows:

 <myForm v-model="user" />

This method leverages computed properties for reactive data creation.

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