Initializing data in VueJS for objects that do not already exist

I'm currently using Ajax to populate data properties for multiple objects, but the properties I want to bind to don't exist at the time of binding.

For example:

<template>
  <my-list v-bind:dataid="myobject ? myobject.data_id : 0"></my-list>
</template>

<script>
export default {

  data () {
    return {
      myobject: {}
    }
  }
</script>

The Vue docs suggest initializing data instead of using an empty object.

However, initializing every sub-parameter on all objects can be labor-intensive when dealing with numerous parameters and sub-parameters. For instance:

myobject: { subp1: [], subp2: [] ...} 

This becomes especially cumbersome when working with nested structures such as arrays of objects or objects containing sub-arrays of objects.

Is there a more efficient alternative when binding to objects that do not yet exist?

Answer №1

It's important to note that even an empty array holds a truthy value, so the condition you have set up in your code

v-bind:dataid="myobject ? myobject.data_id : 0"

always evaluates to true. Instead, consider checking for myobject.length for more accurate validation. This adjustment should fix the issue.

Additionally, there is no need to create dummy objects when working with arrays in Vue. The framework automatically detects any changes made to the array.

Visit this link for more information on Array Change Detection in Vue.js

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