Implementing ajax functionality for a form component in vuejs

Question

Implementing ajax functionality for a form component in vuejs

I am currently working with a Vue.js component that serves as a form with a single field for an email input. The default value of this field, "email", is provided to the component by the parent as a prop. Upon form submission, I need to trigger an event to update the parent with the new value of the email.

Here is an example of how this is set up:

<parent>
  <child :email="email" />
</parent>

The issue I am facing is related to how my child component is structured:

{
  props: ['email'],
  data() {return {d_email: this.email}
}

The problem arises because the input field in my form is defined like this:

<input type="text" v-model="d_email" :value="email" />

If I do not include the :value="email", the child component will not update when the email value changes in the parent, which is crucial. However, in order to send input changes back to the parent on form submission, I need to store the input value somewhere, which is where d_email comes into play.

The challenge is that when the child component is initially rendered, the prop email is null, causing d_email to be initialized as null as well. As a result, the input field always displays null.

What would be the best approach to tackle this situation?

javascript ajax forms vue.js vuejs2

Answer 1

Answer №1

Keep a close eye on the email attribute within the child component.

{
  props: ['email'],
  data() {return {d_email: this.email}},
  watch: { email(newEmail) { this.d_email = email }}
}

By utilizing the watched value, the local email variable will automatically be updated whenever changes are made at the parent level.

Answer 2

Keep a close eye on the email attribute within the child component.

{
  props: ['email'],
  data() {return {d_email: this.email}},
  watch: { email(newEmail) { this.d_email = email }}
}

By utilizing the watched value, the local email variable will automatically be updated whenever changes are made at the parent level.

Answer 3

Answer №2

In order to trigger an event that the parent component will catch, you must include a link to the child component like this:

<child :email="email" v-on:updateemail="setemail"></child>

Here, updateemail represents the event name, and setemail is a method in the parent component that will be executed when the event is triggered.

Within the child component, ensure that d_email is defined as a computed property in the following manner:

computed: {
   d_email: function(){ return this.email }
 }

By doing this, the property will be updated whenever the parent component modifies the prop.

Combining all these steps will result in a structure similar to the following:

<html>
    <head>
        <script src=" https://unpkg.com/vue"></script>
    </head>
    <body>
    <div id="app">
        <parent></parent>
    </div>


    <script>
        Vue.component('parent', {
            template: '<child :email="email" v-on:updateemail="setemail"></child>',
            data: function(){
                return {
                    email: "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f0999e998499919cb09588919d809c95de9f8297">[email protected]</a>"
                }
            },
            methods: {
                setemail: function(e){
                    console.log("email changed to: ", e)
                    this.email = e
                }
            }
        });

        Vue.component('child', {
            template: '<input id="emailinput" type="text" v-model="d_email" v-on:input="updateemail">',
            props: ['email'],
            methods: {
                updateemail: function(e) {
                    this.$emit("updateemail", e.target.value)
                }
            },
            computed: {
                d_email: function(){ return this.email }
            }

        });
        new Vue({
            el:'#app',
        });

    </script>
    </body>
    </html>

Keep an eye on the console to observe the parent's email property being updated as the user types. If this is interacting with a server, you may want the event to trigger upon submission rather than typing, which can be easily adjusted.

Answer 4

In order to trigger an event that the parent component will catch, you must include a link to the child component like this:

<child :email="email" v-on:updateemail="setemail"></child>

Here, updateemail represents the event name, and setemail is a method in the parent component that will be executed when the event is triggered.

Within the child component, ensure that d_email is defined as a computed property in the following manner:

computed: {
   d_email: function(){ return this.email }
 }

By doing this, the property will be updated whenever the parent component modifies the prop.

Combining all these steps will result in a structure similar to the following:

<html>
    <head>
        <script src=" https://unpkg.com/vue"></script>
    </head>
    <body>
    <div id="app">
        <parent></parent>
    </div>


    <script>
        Vue.component('parent', {
            template: '<child :email="email" v-on:updateemail="setemail"></child>',
            data: function(){
                return {
                    email: "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="f0999e998499919cb09588919d809c95de9f8297">[email protected]</a>"
                }
            },
            methods: {
                setemail: function(e){
                    console.log("email changed to: ", e)
                    this.email = e
                }
            }
        });

        Vue.component('child', {
            template: '<input id="emailinput" type="text" v-model="d_email" v-on:input="updateemail">',
            props: ['email'],
            methods: {
                updateemail: function(e) {
                    this.$emit("updateemail", e.target.value)
                }
            },
            computed: {
                d_email: function(){ return this.email }
            }

        });
        new Vue({
            el:'#app',
        });

    </script>
    </body>
    </html>

Keep an eye on the console to observe the parent's email property being updated as the user types. If this is interacting with a server, you may want the event to trigger upon submission rather than typing, which can be easily adjusted.

Implementing ajax functionality for a form component in vuejs

Answer №1

Answer №2

Similar questions

SailsJS - handling blueprint routes prior to configuration of routes

Sending a string array to MVC controllers through ajax

Incorporating .txt files into a static webpage using only HTML and JavaScript

Guide on verifying the presence of a value in a textbox using vue

There is a hidden delete button obscured by another element. What steps can be taken to bring that element to the forefront and make it visible?

Tips on making an array readable by JavaScript using Jinja2 and Google App Engine

What is the best way to manage the connections in my D3 tree chart?

Error on the main thread in NativeScript Angular for Android has not been caught

When using Material UI TextField with input type "date", the event.target.value does not seem to be accessible

Dynamic Templating in Vue.js using URI

The removal process from the cart is failing to display any results

Submitting a form in Rails without refreshing the page and dynamically updating the view

How to troubleshoot WordPress Ajax function not getting form data

Attempting to create a TypeScript + React component that can accept multiple types of props, but running into the issue where only the common prop is accessible

Exploring promise chaining in mongoDB (and mongoose): A guide to effectively utilizing .save() following .then() and gracefully exiting a promise chain upon sending a response

What is the best way to implement auto-saving functionality for multiple form fields in a React application?

"Combining Angular and jQuery for powerful web development

Guide to deploying a React application using Material-UI and react-router

Guide to making two text boxes with SimpleDialog in jQuery Mobile

Setting a value programmatically in a Material-UI Autocomplete TextField