What are some strategies for establishing communication between sibling components in Vue?

Question

What are some strategies for establishing communication between sibling components in Vue?

Currently, my Vue app has a structure that includes a "blackout" component for displaying modals and a router-view for various sub-menus. These components are siblings at the same level.


<blackout v-if="this.popup.currentPopup"></blackout>
     ....
<router-view class="folder">
  ...child-component fetching data with a GET request
</router-view>

Within the dynamically loaded component in "blackout" (using the :is directive), there is a save button used to send data via a POST method. After clicking this save button, I need to refresh the data in the child component of the "router-view". How can I notify the sibling component that the modal component has made a post request and was closed?

After conducting some research, I came across a few potential solutions: using an event bus (considered an antipattern), watching the store state (storing the modal's state in Pinia), or communicating through this.$root (only available in Vue 2).

javascript vue.js

Answer 1

Answer №1

There are multiple methods you can explore to achieve your desired outcome:

Using this.$root is not recommended as it goes against Vue principles and can make component communication confusing and hard to debug.
The event bus pattern is another option, although it is considered controversial. Keep in mind that Vue 3 does not natively support this, so you may need to utilize a third-party library or create your own event emitter.
A store like Pinia is often seen as a more efficient solution. It offers easier debugging and testing capabilities.

An alternative approach is to communicate through the parent component using props and emits:

// Parent.vue
// template
<Foo @success="isRequestSuccessful = true" />
<Bar :isRequestSuccesfull="isRequestSuccessful" />

// script
const isRequestSuccessful = ref(false)

Answer 2

There are multiple methods you can explore to achieve your desired outcome:

Using this.$root is not recommended as it goes against Vue principles and can make component communication confusing and hard to debug.
The event bus pattern is another option, although it is considered controversial. Keep in mind that Vue 3 does not natively support this, so you may need to utilize a third-party library or create your own event emitter.
A store like Pinia is often seen as a more efficient solution. It offers easier debugging and testing capabilities.

An alternative approach is to communicate through the parent component using props and emits:

// Parent.vue
// template
<Foo @success="isRequestSuccessful = true" />
<Bar :isRequestSuccesfull="isRequestSuccessful" />

// script
const isRequestSuccessful = ref(false)

Answer 3

Answer №2

Effective communication between components is crucial in frontend frameworks such as Vue.js.

Data can be transmitted from one component to another at the same level by utilizing tools like Event bus and state management systems (particularly popular is Vuex).

export default {
    name: "DemoComponent"
    methods: {
        sendMessage() {
            this.$root.$emit("message from Demo component", argument1, argument2)
        }
    }
}

export default {
    name: "TestComponent"
    methods: {
        this.$root.$on("Message from Demo", (argument1, argument2) => {
            console.log("Arg 1" + argument1);
            console.log("Arg 1" + argument2);
        }
    }
}

In large-scale applications, it is recommended to avoid using Event Bus and opt for Vuex instead. With Vue 3, methods like $on and $emit have been deprecated, potentially leading to console errors.

For further information, refer to articles located here and here

Answer 4

Effective communication between components is crucial in frontend frameworks such as Vue.js.

Data can be transmitted from one component to another at the same level by utilizing tools like Event bus and state management systems (particularly popular is Vuex).

export default {
    name: "DemoComponent"
    methods: {
        sendMessage() {
            this.$root.$emit("message from Demo component", argument1, argument2)
        }
    }
}

export default {
    name: "TestComponent"
    methods: {
        this.$root.$on("Message from Demo", (argument1, argument2) => {
            console.log("Arg 1" + argument1);
            console.log("Arg 1" + argument2);
        }
    }
}

In large-scale applications, it is recommended to avoid using Event Bus and opt for Vuex instead. With Vue 3, methods like $on and $emit have been deprecated, potentially leading to console errors.

For further information, refer to articles located here and here

What are some strategies for establishing communication between sibling components in Vue?

Answer №1

Answer №2

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