Ways to access a particular property of a child component object from the parent component

Is there a way to access a child component's "meta" property from the parent component without using the emit method?

I am aware of the solution involving an emit method, but I'm curious if there is a simpler approach to achieving this.

// Default.vue <-- parent component
<template>
  <h1>{{ pagetitle }}</h1>
  <router-view />
</template>

<script>
import { defineComponent } from 'vue'

export default defineComponent({
  name: 'LayoutDefault',
  
  computed: {
    pagetitle () {
      let title = this.$route.meta.title // <-- Looking to access the child component's meta here

      // If title is not provided, set to empty string
      if (!title) title = ''

      return title
    }
  }
})
</script>
// router/routes.js
const routes = [
  {
    path: '/',
    component: () => import('layouts/Default.vue'),
    children: [
      {
        path: 'dashboard',
        name: 'dashboard', 
        meta: { title: 'Dashboard', auth: true, fullscreen: false }, // <-- NEED THIS
        component: () => import('pages/dashboard.vue')
      }
    ]
  }
]
// pages/dashboard.vue <-- child component
<template>
  <div>
    dashboard content
  </div>
</template>

<script>
import { defineComponent } from 'vue'

export default defineComponent({
  name: 'Dashboard',
  meta: { // <-- Should be accessible from the parent component (Default.vue)
    title: 'Dashboard',
    auth: true,
    fullscreen: false
  }
})
</script>

Answer №1

If you need to access component information, you can utilize the $route.matched property.

Take a look at this Proof of Concept:

const Dashboard = Vue.defineComponent({
  template: "<div>Some dashboard</div>",
  meta: { title: "Dashboard" },
})

const router = new VueRouter({
  routes: [{ path: "/", component: Dashboard }],
})

const app = new Vue({
  router,

  computed: {
    // It's important to note that this retrieves the *last* matched component, as there may be multiple matches
    childComponent: (vm) => vm.$route.matched.at(-1).components.default,
  },
}).$mount('#app')
<div id="app">
  <h1>{{ childComponent.meta.title }}</h1>
  <router-view />
</div>

<script src="https://unpkg.com/vue@2/dist/vue.js"></script>
<script src="https://unpkg.com/vue-router@3/dist/vue-router.js"></script>


As Estus Flash suggested in a comment, instead of selecting the last matched component, we can choose the last one with defined meta. To achieve this, replace the following line:

vm.$route.matched.at(-1).components.default

with:

vm.$route.matched.findLast((r) => "meta" in r.components.default)
    .components.default

Answer №2

After researching online, I came across a few different methods for accessing data from child components in VueJS:

  1. One approach is to use ref and access the data using this.$refs.REF_NAME.$data (An example can be found here: )

  2. Another option is to utilize Vuex or duplicate the logic behind stores (An example of this can be seen here: )

Source: VueJS access child component's data from parent

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Upon inputting the text value, the concealed button will automatically appear without the need to press any buttons

I would like to create something similar. The hidden button should appear after entering the text value without the need to press any buttons. For example, if a user enters Hazrat Shahjalal International Airport, Dhaka (DAC), the button will become visibl ...

Executing JavaScript POST Requests Based on User Input Changes

Hey there! I'm working on a feature where the input value is populated based on the selection in a dropdown menu. The idea is that when the user picks a code, the corresponding amount will be displayed. However, I want the select box to retain its or ...

The componentDidUpdate method is functioning by comparing the previous state with the current state on different triggers

I have a primary element that is invoking another element with specific attributes. // Primary Element <SecondaryElement className="EnterNumber-input" submitClicked={this.state.submitClicked} /> Upon clicking a button, I am modify ...

Tips for optimizing the processing speed of large XML files using jQuery, Javascript, and PHP

Currently, I am developing a store overview page that displays about 20 products per page. The data for this page is sourced from a zipped (gzip) XML file (*.xml.gz). You can find the feed here: . Every day, I download this file to my server using PHP and ...

Inquiries about utilizing setTimeout with backbone.js and effectively managing timeouts

One of the questions I have is related to clearing timeouts using clearTimeout(content.idTimeout) for a specific idTiemout. But how can I clear all timeouts at once? Here is the model I am working with: var ContentModel = Backbone.Model.extend({ URL: "htt ...

When the onload event is triggered, the jscript function called var data is loaded, without any interruption in

I encountered an issue while trying to preview an image from a BBCode decoder. The code works fine, but I need the image to be inside an <a> href link, so that people can click on it and get the image source. Additionally, I want to display a message ...

Explore various date formats using the datepicker functionality

I'm dealing with the code below: <script type="text/javascript" language="javascript" src="~/Scripts/bootstrap-datepicker.min.js"></script> <script type="text/javascript" language="javascript" src="~/Scripts/locales/bootst ...

Next.js Error: Unable to access the 'collection' property, as it is undefined

I have recently started using next.js and I am interested in creating a Facebook clone by following YouTube tutorials. However, I keep encountering the error message "Cannot read properties of undefined (reading 'collection')". To troubleshoot, I ...

Azure Chatbot that logs conversations in Webchat whenever the user selects 'none of the above' option

Recently, I've delved into the world of web chat services and embarked on a journey to craft a chat bot using pure JavaScript code that can seamlessly integrate into any HTML file. Despite consulting Microsoft's documentation, I find myself in a ...

Show the user's username on their profile page by retrieving the name from the database

Upon successful login/signup with various services, I want to display the username on the profile page. However, my database stores user data in different fields depending on the service used - user.twitter.name for Twitter logins, user.google.name for Goo ...

Generate an additional element for each element when clicked, triggering an error warning

When creating a form, I want to display an error message next to each invalid element when the submit button is clicked. Although I am close, the issue is that it adds the span tag twice after the element if two elements are invalid. I need it to be added ...

Using ajax to submit a request to the controller

I'm currently developing an ASP.NET Core MVC application and have a registration page set up. My goal is to return View with errors if the model state is false: @model WebApplication2PROP.Entities.UserRegister @* For more information on enabling M ...

converting JSON to date format in angular

.controller('feedCtrl', ['$scope', '$http', function($scope, $http) { $http.get('items.json').then(function(response) { $scope.items = response.data; $scope.user = localStorage.getItem("glittrLoggedin"); ...

Sending an ajax request to submit the results of jQuery.each loop

$(".submitinfo").each(function() { // Using ID as POST name and value as POST value }); // Sending the data using ajax request $.ajax({ url: 'submit.php', traditional: true, data: { 'submit':'true', 'age&a ...

Ways to deactivate the Bootstrap collapse feature

In my accordion FAQs, I am facing an issue where Question 1 is automatically opened when the page loads. Additionally, when I click on Question 2, it closes instead of staying open. I would like to address these problems and make sure that each question st ...

Laravel is unable to interpret formData

I've been on a quest to find answers, but so far I'm coming up empty. I'm trying to send file input to a Laravel controller via Ajax, but it seems like the controller can't read the data at all. Here is my Ajax code: let fd = n ...

Is it possible to utilize the same database connection for multiple routes in an

I have taken inspiration from Express's route-separation example and created a Node.js app. Now, I aim to enhance it by integrating the MongoDB driver Mongoose for listing Users and Kittens. var express = require('express'); var app = expre ...

Tips for determining the width of an image and utilizing that measurement as the height in order to create a balanced square image

I am currently facing an issue with my code that is used to retrieve the width of an image which is set in percentages. Although I am able to obtain the width in pixels, I am struggling with correctly inserting the variable into the CSS property value usin ...

Tutorial on creating a subset of a series using jqplot

I am looking to display three series on the same canvas. The series are defined as follows: rec1 = [0, 0, 150, 200, 0 ]; rec2 = [60, 120, 179, 240, 300]; rec3 = [50, 100, 150, 200, 250]; Below are the source codes I am using to draw these series. $ ...

Tips for handling a multi-step form in React?

Below is the code snippet for the multistep form I have been working on: import clsx from 'clsx'; import React from 'react'; import PropTypes from 'prop-types'; import { makeStyles, withStyles } from '@material-ui/styles ...