Vuejs Input Binding Based on Array of Computed Properties

Question

I have a scenario where I want the v-model binding of an Input field to be decided by the value returned by a computed property.

Please see the example below:

<!DOCTYPE html>
<html>
<head>
<script src="https://unpkg.com/[email protected]/dist/vue.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet" />  
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width">
  <title>JS Bin</title>
</head>
<body>
<div id="app">
    {{value}}
    <input type="text" v-model="myName.first">
    <input type="text" v-model="myName.second">
</div>
  <script>  
    new Vue({
        el:'#app',
        data:{
            value:{
                first: '',
                second: ''
            }
        },
        computed: {
            myName: {
                get(){
                    return {first:'this.value.first',second:'this.value.second'};  //this will actually come from an API
                },
                set(newValue){
                    this.value.first = newValue.second;
                    this.value.second = newValue.second;
                }
            } 
        }     
    });
  </script>
</body>
</html>

As you can see in the above code, I want the first field to be bound to value.first and second value to be bound to value.second. For both fields, I want the model binding to be decided by the value returned from computed property. Right now it's a simple example and there are only two returned value, i.e., value.first and value.second. But this will be decided on logic.

I feel I am not making use of get and set correctly. Really appreciate any help.

Note: I had a previous question on similar lines but it had only one value returned in computed property instead of an array/object. The answer provided worked great However, this time the challenge is that we have two values that need to be set. You can see that thread here: Vuejs Input Binding Based on Computed Property

retrograde · Accepted Answer · 2017-12-14 05:28:51Z

1

You can v-model directly to a computed property without using data or set/get.

CodePen

<input type="text" v-model="myName.first">

data:{},
computed: {
   myName: function() {
       return this.$store.state.myName; //or whatever your api is
   } 
}

Also, make sure the value of your computed property is present before your input loads.

answered Dec 14, 2017 at 5:28

retrograde

2,9796 gold badges31 silver badges54 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

asanas Over a year ago

This works, but my current problem is a little different. So, I have some property in my data() called item. And my computed property actually just gets me the names of the properties in this 'item' that needs to be populated. So, I eventually want the values to be saved under 'item' based on what properties are returned by computed property. See this codepen codepen.io/anon/pen/xpbNVR

retrograde Over a year ago

So I think you will want to do something like this: codepen.io/retrograde/pen/PEwgLQ?editors=1010#0

Collectives™ on Stack Overflow

Vuejs Input Binding Based on Array of Computed Properties

1 Answer 1

2 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related