Passing all emitted events from Vue 3 child component to its parent - A complete guide

Question

Passing all emitted events from Vue 3 child component to its parent - A complete guide

My Vue components are structured as follows:

<TopParent> <!-- Listening for events from EventProducer here -->
  <Child_1>
    <Child_2>
      <Child_3>
        ... 
        <Child_N>
          <EventProducer /> <!-- Emitting events here --> 
        </Child_N>

      </Child_3>
    </Child_2>
  </Child_1>
</TopParent>

Query

Is it possible to emit an event in the <EventProducer> component and then listen to that event in the <TopParent> component?

How can I instruct all

<Child_1>...<Child_N>

components to simply forward the event to their parent?

P.S. I am looking for a solution where I don't need to specify the exact names of the events, but rather forward all events.

A possibly inadequate workaround

A basic approach could be something like this. Yet, it becomes quite verbose, especially with multiple events:

<TopParent @foo="doTheJob()">
  <Child_1  @foo="emit('foo')">
    <Child_2  @foo="emit('foo')">
      <Child_3  @foo="emit('foo')">
        ... 
        <Child_N @foo="emit('foo')">
          <EventProducer @click="emit('foo')"/> 
        </Child_N>

      </Child_3>
    </Child_2>
  </Child_1>
</TopParent>

I am optimistic that there might be a more efficient way to achieve this.

javascript vue.js vuejs3

Answer 1

Answer №1

If you're looking to pass data to a child or parent component, there are several approaches to consider. It's important to understand your specific needs before deciding on an implementation.

Utilize Provide/Inject (which can be made global)
Implement a state management solution like Vuex or Pinia (also can be global)
Use event emitters and props with Vue events system (restricted to parent-child communication)
Create reusable composition functions with useComposition (potentially global as well)

// Example of a composition function 
import { ref } from 'vue'

const someString = ref<string>('')

export const useComposition = () => {
  return {
    someString,
  }
}

// How to use the composition function
import { useComposition } from 'path/to/file'
const { someString } = useComposition()

Answer 2

If you're looking to pass data to a child or parent component, there are several approaches to consider. It's important to understand your specific needs before deciding on an implementation.

Utilize Provide/Inject (which can be made global)
Implement a state management solution like Vuex or Pinia (also can be global)
Use event emitters and props with Vue events system (restricted to parent-child communication)
Create reusable composition functions with useComposition (potentially global as well)

// Example of a composition function 
import { ref } from 'vue'

const someString = ref<string>('')

export const useComposition = () => {
  return {
    someString,
  }
}

// How to use the composition function
import { useComposition } from 'path/to/file'
const { someString } = useComposition()

Answer 3

Answer №2

To enable this functionality, you can utilize the provide/inject feature as outlined in the Vue documentation.

The concept involves establishing a form of "callback function" from the TopParent component to the EventProducer component.

Within the TopParent component:

import { provide } from 'vue';

...
function activateOnEvent() {
  //...
}

provide('parentFn', activateOnEvent); //key, value

Inside the EventProducer component:

import { inject } from 'vue';
...
const parentFn = inject('parentFn');
...
<button @click="parentFn()">Click</button>

This setup allows you to directly invoke a function from the TopParent component during an event.

Answer 4

To enable this functionality, you can utilize the provide/inject feature as outlined in the Vue documentation.

The concept involves establishing a form of "callback function" from the TopParent component to the EventProducer component.

Within the TopParent component:

import { provide } from 'vue';

...
function activateOnEvent() {
  //...
}

provide('parentFn', activateOnEvent); //key, value

Inside the EventProducer component:

import { inject } from 'vue';
...
const parentFn = inject('parentFn');
...
<button @click="parentFn()">Click</button>

This setup allows you to directly invoke a function from the TopParent component during an event.

Passing all emitted events from Vue 3 child component to its parent - A complete guide

Answer №1

Answer №2

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