Avoid Props Drilling in Vue 3 Composition API by Using Inject Methods

Props drilling is a common issue in Vue applications where you need to pass data through multiple levels of nested components. This can lead to code that is difficult to maintain and understand, as well as decreased performance due to unnecessary re-rendering of components.

Vue 3 introduces the Composition API, which allows you to organize your code in a more modular and reusable way. In this tutorial, we will explore how to provide inject methods for avoiding props drilling in Vue 3 Composition API.

Step 1: Create the Provider Component

The first step is to create a provider component that will inject data into the component tree. This component will hold the data that you want to make available to other components without having to pass it down through props.

<template>
  <div>
    // Your provider component template
    <slot />
  </div>
</template>

<script>
import { provide, ref } from 'vue';

export default {
  setup() {
    const data = ref('Hello from provider!');

    provide('sharedData', data);

    return {
      data
    };
  }
};
</script>

In this component, we are using the provide function from Vue to make the data variable available to other components. We are also using the ref function to create a reactive variable.

Step 2: Create the Consumer Component

Next, we need to create a consumer component that will inject the data provided by the provider component. This component will be able to access the data without having to pass it down through props.

<template>
  <div>
    <h1>{{ sharedData }}</h1>
    <ChildComponent />
  </div>
</template>

<script>
import { inject } from 'vue';
import ChildComponent from './ChildComponent.vue';

export default {
  components: {
    ChildComponent
  },
  setup() {
    const sharedData = inject('sharedData');

    return {
      sharedData
    };
  }
};
</script>

In this component, we are using the inject function from Vue to access the sharedData variable provided by the provider component. This allows us to access the data without having to pass it down through props.

Step 3: Create Nested Components

You can now create nested components that will have access to the shared data using the inject method. These components can access the data from any level in the component tree without the need for props drilling.

<template>
  <div>
    <h2>{{ sharedData }}</h2>
  </div>
</template>

<script>
import { inject } from 'vue';

export default {
  setup() {
    const sharedData = inject('sharedData');

    return {
      sharedData
    };
  }
};
</script>

By following these steps, you can easily provide inject methods for avoiding props drilling in Vue 3 Composition API. This approach allows you to create a more modular and reusable codebase while avoiding the performance issues associated with props drilling. Experiment with this technique in your Vue applications to see how it can improve your codebase!